diff --git a/bundles/com.eclipsesource.jshint/src/com/eclipsesource/jshint/JSHint.java b/bundles/com.eclipsesource.jshint/src/com/eclipsesource/jshint/JSHint.java index 07adc9d..4d7e0ba 100644 --- a/bundles/com.eclipsesource.jshint/src/com/eclipsesource/jshint/JSHint.java +++ b/bundles/com.eclipsesource.jshint/src/com/eclipsesource/jshint/JSHint.java @@ -47,7 +47,7 @@ */ public class JSHint { - private static final String DEFAULT_JSHINT_VERSION = "2.1.2"; + private static final String DEFAULT_JSHINT_VERSION = "2.1.10"; private static final int DEFAULT_JSHINT_INDENT = 4; private ScriptableObject scope; private Function jshint; diff --git a/bundles/com.eclipsesource.jshint/src/com/jshint/jshint-2.1.2.js b/bundles/com.eclipsesource.jshint/src/com/jshint/jshint-2.1.10.js similarity index 95% rename from bundles/com.eclipsesource.jshint/src/com/jshint/jshint-2.1.2.js rename to bundles/com.eclipsesource.jshint/src/com/jshint/jshint-2.1.10.js index fadf43b..c84716c 100644 --- a/bundles/com.eclipsesource.jshint/src/com/jshint/jshint-2.1.2.js +++ b/bundles/com.eclipsesource.jshint/src/com/jshint/jshint-2.1.10.js @@ -1,4 +1,4 @@ -//2.1.2 +// 2.1.10 var JSHINT; (function () { var require; @@ -290,8 +290,6 @@ exports.ecmaIdentifiers = { // Global variables commonly provided by a web browser environment. exports.browser = { - ArrayBuffer : false, - ArrayBufferView : false, Audio : false, Blob : false, addEventListener : false, @@ -303,7 +301,7 @@ exports.browser = { clearTimeout : false, close : false, closed : false, - DataView : false, + CustomEvent : false, DOMParser : false, defaultStatus : false, document : false, @@ -311,8 +309,6 @@ exports.browser = { ElementTimeControl : false, event : false, FileReader : false, - Float32Array : false, - Float64Array : false, FormData : false, focus : false, frames : false, @@ -372,9 +368,6 @@ exports.browser = { HTMLUListElement : false, HTMLVideoElement : false, history : false, - Int16Array : false, - Int32Array : false, - Int8Array : false, Image : false, length : false, localStorage : false, @@ -382,6 +375,7 @@ exports.browser = { MessageChannel : false, MessageEvent : false, MessagePort : false, + MouseEvent : false, moveBy : false, moveTo : false, MutationObserver : false, @@ -571,10 +565,6 @@ exports.browser = { SVGZoomAndPan : false, TimeEvent : false, top : false, - Uint16Array : false, - Uint32Array : false, - Uint8Array : false, - Uint8ClampedArray : false, WebSocket : false, window : false, Worker : false, @@ -626,27 +616,30 @@ exports.couch = { }; exports.node = { - __filename : false, - __dirname : false, - Buffer : false, - DataView : false, - console : false, - exports : true, // In Node it is ok to exports = module.exports = foo(); - GLOBAL : false, - global : false, - module : false, - process : false, - require : false, - setTimeout : false, - clearTimeout : false, - setInterval : false, - clearInterval: false + __filename : false, + __dirname : false, + Buffer : false, + console : false, + exports : true, // In Node it is ok to exports = module.exports = foo(); + GLOBAL : false, + global : false, + module : false, + process : false, + require : false, + setTimeout : false, + clearTimeout : false, + setInterval : false, + clearInterval : false, + setImmediate : false, // v0.9.1+ + clearImmediate: false // v0.9.1+ }; exports.phantom = { phantom : true, require : true, - WebPage : true + WebPage : true, + console : true, // in examples, but undocumented + exports : true // v1.7+ }; exports.rhino = { @@ -671,6 +664,49 @@ exports.rhino = { version : false }; +exports.shelljs = { + target : false, + echo : false, + exit : false, + cd : false, + pwd : false, + ls : false, + find : false, + cp : false, + rm : false, + mv : false, + mkdir : false, + test : false, + cat : false, + sed : false, + grep : false, + which : false, + dirs : false, + pushd : false, + popd : false, + env : false, + exec : false, + chmod : false, + config : false, + error : false, + tempdir : false +}; + +exports.typed = { + ArrayBuffer : false, + ArrayBufferView : false, + DataView : false, + Float32Array : false, + Float64Array : false, + Int16Array : false, + Int32Array : false, + Int8Array : false, + Uint16Array : false, + Uint32Array : false, + Uint8Array : false, + Uint8ClampedArray : false +}; + exports.wsh = { ActiveXObject : true, Enumerator : true, @@ -691,7 +727,7 @@ exports.dojo = { dojo : false, dijit : false, dojox : false, - define : false, + define : false, "require": false }; @@ -834,6 +870,32 @@ exports.javascriptURL = /^(?:javascript|jscript|ecmascript|vbscript|mocha|livesc exports.fallsThrough = /^\s*\/\*\s*falls?\sthrough\s*\*\/\s*$/; },{}],5:[function(require,module,exports){ +"use strict"; + +var state = { + syntax: {}, + + reset: function () { + this.tokens = { + prev: null, + next: null, + curr: null + }; + + this.option = {}; + this.ignored = {}; + this.directive = {}; + this.jsonMode = false; + this.jsonWarnings = []; + this.lines = []; + this.tab = ""; + this.cache = {}; // Node.JS doesn't have Map. Sniff. + } +}; + +exports.state = state; + +},{}],6:[function(require,module,exports){ (function(){"use strict"; exports.register = function (linter) { @@ -1006,8551 +1068,8777 @@ exports.register = function (linter) { }); }; })() -},{}],6:[function(require,module,exports){ -"use strict"; - -var state = { - syntax: {}, - - reset: function () { - this.tokens = { - prev: null, - next: null, - curr: null - }, - - this.option = {}; - this.ignored = {}; - this.directive = {}; - this.jsonMode = false; - this.jsonWarnings = []; - this.lines = []; - this.tab = ""; - this.cache = {}; // Node.JS doesn't have Map. Sniff. - } -}; - -exports.state = state; - -},{}],"jshint":[function(require,module,exports){ -module.exports=require('E/GbHF'); -},{}],"E/GbHF":[function(require,module,exports){ -(function(){/*! - * JSHint, by JSHint Community. - * - * This file (and this file only) is licensed under the same slightly modified - * MIT license that JSLint is. It stops evil-doers everywhere: - * - * Copyright (c) 2002 Douglas Crockford (www.JSLint.com) - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom - * the Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * The Software shall be used for Good, not Evil. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - */ +},{}],7:[function(require,module,exports){ +(function(){"use strict"; -/*jshint quotmark:double */ -/*global console:true */ -/*exported console */ +var _ = require("underscore"); -var _ = require("underscore"); -var events = require("events"); -var vars = require("../shared/vars.js"); -var messages = require("../shared/messages.js"); -var Lexer = require("./lex.js").Lexer; -var reg = require("./reg.js"); -var state = require("./state.js").state; -var style = require("./style.js"); +var errors = { + // JSHint options + E001: "Bad option: '{a}'.", + E002: "Bad option value.", -// We need this module here because environments such as IE and Rhino -// don't necessarilly expose the 'console' API and browserify uses -// it to log things. It's a sad state of affair, really. -var console = require("console-browserify"); + // JSHint input + E003: "Expected a JSON value.", + E004: "Input is neither a string nor an array of strings.", + E005: "Input is empty.", + E006: "Unexpected early end of program.", -// We build the application inside a function so that we produce only a singleton -// variable. That function will be invoked immediately, and its return value is -// the JSHINT function itself. + // Strict mode + E007: "Missing \"use strict\" statement.", + E008: "Strict violation.", + E009: "Option 'validthis' can't be used in a global scope.", + E010: "'with' is not allowed in strict mode.", -var JSHINT = (function () { - "use strict"; + // Constants + E011: "const '{a}' has already been declared.", + E012: "const '{a}' is initialized to 'undefined'.", + E013: "Attempting to override '{a}' which is a constant.", - var anonname, // The guessed name for anonymous functions. - api, // Extension API + // Regular expressions + E014: "A regular expression literal can be confused with '/='.", + E015: "Unclosed regular expression.", + E016: "Invalid regular expression.", - // These are operators that should not be used with the ! operator. - bang = { - "<" : true, - "<=" : true, - "==" : true, - "===": true, - "!==": true, - "!=" : true, - ">" : true, - ">=" : true, - "+" : true, - "-" : true, - "*" : true, - "/" : true, - "%" : true - }, + // Tokens + E017: "Unclosed comment.", + E018: "Unbegun comment.", + E019: "Unmatched '{a}'.", + E020: "Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.", + E021: "Expected '{a}' and instead saw '{b}'.", + E022: "Line breaking error '{a}'.", + E023: "Missing '{a}'.", + E024: "Unexpected '{a}'.", + E025: "Missing ':' on a case clause.", + E026: "Missing '}' to match '{' from line {a}.", + E027: "Missing ']' to match '[' form line {a}.", + E028: "Illegal comma.", + E029: "Unclosed string.", - // These are the JSHint boolean options. - boolOptions = { - asi : true, // if automatic semicolon insertion should be tolerated - bitwise : true, // if bitwise operators should not be allowed - boss : true, // if advanced usage of assignments should be allowed - browser : true, // if the standard browser globals should be predefined - camelcase : true, // if identifiers should be required in camel case - couch : true, // if CouchDB globals should be predefined - curly : true, // if curly braces around all blocks should be required - debug : true, // if debugger statements should be allowed - devel : true, // if logging globals should be predefined (console, alert, etc.) - dojo : true, // if Dojo Toolkit globals should be predefined - eqeqeq : true, // if === should be required - eqnull : true, // if == null comparisons should be tolerated - es3 : true, // if ES3 syntax should be allowed - es5 : true, // if ES5 syntax should be allowed (is now set per default) - esnext : true, // if es.next specific syntax should be allowed - moz : true, // if mozilla specific syntax should be allowed - evil : true, // if eval should be allowed - expr : true, // if ExpressionStatement should be allowed as Programs - forin : true, // if for in statements must filter - funcscope : true, // if only function scope should be used for scope tests - gcl : true, // if JSHint should be compatible with Google Closure Linter - globalstrict: true, // if global "use strict"; should be allowed (also enables 'strict') - immed : true, // if immediate invocations must be wrapped in parens - iterator : true, // if the `__iterator__` property should be allowed - jquery : true, // if jQuery globals should be predefined - lastsemic : true, // if semicolons may be ommitted for the trailing - // statements inside of a one-line blocks. - laxbreak : true, // if line breaks should not be checked - laxcomma : true, // if line breaks should not be checked around commas - loopfunc : true, // if functions should be allowed to be defined within - // loops - mootools : true, // if MooTools globals should be predefined - multistr : true, // allow multiline strings - newcap : true, // if constructor names must be capitalized - noarg : true, // if arguments.caller and arguments.callee should be - // disallowed - node : true, // if the Node.js environment globals should be - // predefined - noempty : true, // if empty blocks should be disallowed - nonew : true, // if using `new` for side-effects should be disallowed - nonstandard : true, // if non-standard (but widely adopted) globals should - // be predefined - nomen : true, // if names should be checked - onevar : true, // if only one var statement per function should be - // allowed - passfail : true, // if the scan should stop on first error - phantom : true, // if PhantomJS symbols should be allowed - plusplus : true, // if increment/decrement should not be allowed - proto : true, // if the `__proto__` property should be allowed - prototypejs : true, // if Prototype and Scriptaculous globals should be - // predefined - rhino : true, // if the Rhino environment globals should be predefined - undef : true, // if variables should be declared before used - scripturl : true, // if script-targeted URLs should be tolerated - shadow : true, // if variable shadowing should be tolerated - smarttabs : true, // if smarttabs should be tolerated - // (http://www.emacswiki.org/emacs/SmartTabs) - strict : true, // require the "use strict"; pragma - sub : true, // if all forms of subscript notation are tolerated - supernew : true, // if `new function () { ... };` and `new Object;` - // should be tolerated - trailing : true, // if trailing whitespace rules apply - validthis : true, // if 'this' inside a non-constructor function is valid. - // This is a function scoped option only. - withstmt : true, // if with statements should be allowed - white : true, // if strict whitespace rules apply - worker : true, // if Web Worker script symbols should be allowed - wsh : true, // if the Windows Scripting Host environment globals - // should be predefined - yui : true, // YUI variables should be predefined + // Everything else + E030: "Expected an identifier and instead saw '{a}'.", + E031: "Bad assignment.", // FIXME: Rephrase + E032: "Expected a small integer or 'false' and instead saw '{a}'.", + E033: "Expected an operator and instead saw '{a}'.", + E034: "get/set are ES5 features.", + E035: "Missing property name.", + E036: "Expected to see a statement and instead saw a block.", + E037: null, // Vacant + E038: null, // Vacant + E039: "Function declarations are not invocable. Wrap the whole function invocation in parens.", + E040: "Each value should have its own case label.", + E041: "Unrecoverable syntax error.", + E042: "Stopping.", + E043: "Too many errors.", + E044: "'{a}' is already defined and can't be redefined.", + E045: "Invalid for each loop.", + E046: "A yield statement shall be within a generator function (with syntax: `function*`)", + E047: "A generator function shall contain a yield statement.", + E048: "Let declaration not directly within block.", + E049: "A {a} cannot be named '{b}'.", + E050: "Mozilla requires the yield expression to be parenthesized here.", + E051: "Regular parameters cannot come after default parameters." +}; - // Obsolete options - onecase : true, // if one case switch statements should be allowed - regexp : true, // if the . should not be allowed in regexp literals - regexdash : true // if unescaped first/last dash (-) inside brackets - // should be tolerated - }, - - // These are the JSHint options that can take any value - // (we use this object to detect invalid options) - valOptions = { - maxlen : false, - indent : false, - maxerr : false, - predef : false, - quotmark : false, //'single'|'double'|true - scope : false, - maxstatements: false, // {int} max statements per function - maxdepth : false, // {int} max nested block depth per function - maxparams : false, // {int} max params per function - maxcomplexity: false, // {int} max cyclomatic complexity per function - unused : true, // warn if variables are unused. Available options: - // false - don't check for unused variables - // true - "vars" + check last function param - // "vars" - skip checking unused function params - // "strict" - "vars" + check all function params - latedef : false // warn if the variable is used before its definition - // false - don't emit any warnings - // true - warn if any variable is used before its definition - // "nofunc" - warn for any variable but function declarations - }, - - // These are JSHint boolean options which are shared with JSLint - // where the definition in JSHint is opposite JSLint - invertedOptions = { - bitwise : true, - forin : true, - newcap : true, - nomen : true, - plusplus: true, - regexp : true, - undef : true, - white : true, +var warnings = { + W001: "'hasOwnProperty' is a really bad name.", + W002: "Value of '{a}' may be overwritten in IE 8 and earlier.", + W003: "'{a}' was used before it was defined.", + W004: "'{a}' is already defined.", + W005: "A dot following a number can be confused with a decimal point.", + W006: "Confusing minuses.", + W007: "Confusing pluses.", + W008: "A leading decimal point can be confused with a dot: '{a}'.", + W009: "The array literal notation [] is preferrable.", + W010: "The object literal notation {} is preferrable.", + W011: "Unexpected space after '{a}'.", + W012: "Unexpected space before '{a}'.", + W013: "Missing space after '{a}'.", + W014: "Bad line breaking before '{a}'.", + W015: "Expected '{a}' to have an indentation at {b} instead at {c}.", + W016: "Unexpected use of '{a}'.", + W017: "Bad operand.", + W018: "Confusing use of '{a}'.", + W019: "Use the isNaN function to compare with NaN.", + W020: "Read only.", + W021: "'{a}' is a function.", + W022: "Do not assign to the exception parameter.", + W023: "Expected an identifier in an assignment and instead saw a function invocation.", + W024: "Expected an identifier and instead saw '{a}' (a reserved word).", + W025: "Missing name in function declaration.", + W026: "Inner functions should be listed at the top of the outer function.", + W027: "Unreachable '{a}' after '{b}'.", + W028: "Label '{a}' on {b} statement.", + W030: "Expected an assignment or function call and instead saw an expression.", + W031: "Do not use 'new' for side effects.", + W032: "Unnecessary semicolon.", + W033: "Missing semicolon.", + W034: "Unnecessary directive \"{a}\".", + W035: "Empty block.", + W036: "Unexpected /*member '{a}'.", + W037: "'{a}' is a statement label.", + W038: "'{a}' used out of scope.", + W039: "'{a}' is not allowed.", + W040: "Possible strict violation.", + W041: "Use '{a}' to compare with '{b}'.", + W042: "Avoid EOL escaping.", + W043: "Bad escaping of EOL. Use option multistr if needed.", + W044: "Bad or unnecessary escaping.", + W045: "Bad number '{a}'.", + W046: "Don't use extra leading zeros '{a}'.", + W047: "A trailing decimal point can be confused with a dot: '{a}'.", + W048: "Unexpected control character in regular expression.", + W049: "Unexpected escaped character '{a}' in regular expression.", + W050: "JavaScript URL.", + W051: "Variables should not be deleted.", + W052: "Unexpected '{a}'.", + W053: "Do not use {a} as a constructor.", + W054: "The Function constructor is a form of eval.", + W055: "A constructor name should start with an uppercase letter.", + W056: "Bad constructor.", + W057: "Weird construction. Is 'new' unnecessary?", + W058: "Missing '()' invoking a constructor.", + W059: "Avoid arguments.{a}.", + W060: "document.write can be a form of eval.", + W061: "eval can be harmful.", + W062: "Wrap an immediate function invocation in parens " + + "to assist the reader in understanding that the expression " + + "is the result of a function, and not the function itself.", + W063: "Math is not a function.", + W064: "Missing 'new' prefix when invoking a constructor.", + W065: "Missing radix parameter.", + W066: "Implied eval. Consider passing a function instead of a string.", + W067: "Bad invocation.", + W068: "Wrapping non-IIFE function literals in parens is unnecessary.", + W069: "['{a}'] is better written in dot notation.", + W070: "Extra comma. (it breaks older versions of IE)", + W071: "This function has too many statements. ({a})", + W072: "This function has too many parameters. ({a})", + W073: "Blocks are nested too deeply. ({a})", + W074: "This function's cyclomatic complexity is too high. ({a})", + W075: "Duplicate key '{a}'.", + W076: "Unexpected parameter '{a}' in get {b} function.", + W077: "Expected a single parameter in set {a} function.", + W078: "Setter is defined without getter.", + W079: "Redefinition of '{a}'.", + W080: "It's not necessary to initialize '{a}' to 'undefined'.", + W081: "Too many var statements.", + W082: "Function declarations should not be placed in blocks. " + + "Use a function expression or move the statement to the top of " + + "the outer function.", + W083: "Don't make functions within a loop.", + W084: "Expected a conditional expression and instead saw an assignment.", + W085: "Don't use 'with'.", + W086: "Expected a 'break' statement before '{a}'.", + W087: "Forgotten 'debugger' statement?", + W088: "Creating global 'for' variable. Should be 'for (var {a} ...'.", + W089: "The body of a for in should be wrapped in an if statement to filter " + + "unwanted properties from the prototype.", + W090: "'{a}' is not a statement label.", + W091: "'{a}' is out of scope.", + W092: "Wrap the /regexp/ literal in parens to disambiguate the slash operator.", + W093: "Did you mean to return a conditional instead of an assignment?", + W094: "Unexpected comma.", + W095: "Expected a string and instead saw {a}.", + W096: "The '{a}' key may produce unexpected results.", + W097: "Use the function form of \"use strict\".", + W098: "'{a}' is defined but never used.", + W099: "Mixed spaces and tabs.", + W100: "This character may get silently deleted by one or more browsers.", + W101: "Line is too long.", + W102: "Trailing whitespace.", + W103: "The '{a}' property is deprecated.", + W104: "'{a}' is only available in JavaScript 1.7.", + W105: "Unexpected {a} in '{b}'.", + W106: "Identifier '{a}' is not in camel case.", + W107: "Script URL.", + W108: "Strings must use doublequote.", + W109: "Strings must use singlequote.", + W110: "Mixed double and single quotes.", + W112: "Unclosed string.", + W113: "Control character in string: {a}.", + W114: "Avoid {a}.", + W115: "Octal literals are not allowed in strict mode.", + W116: "Expected '{a}' and instead saw '{b}'.", + W117: "'{a}' is not defined.", + W118: "'{a}' is only available in Mozilla JavaScript extensions (use moz option).", + W119: "'{a}' is only available in ES6 (use esnext option).", + W120: "You might be leaking a variable ({a}) here." +}; - // Inverted and renamed, use JSHint name here - eqeqeq : true, - onevar : true, - strict : true - }, +var info = { + I001: "Comma warnings can be turned off with 'laxcomma'.", + I002: "Reserved words as properties can be used under the 'es5' option.", + I003: "ES5 option is now set per default" +}; - // These are JSHint boolean options which are shared with JSLint - // where the name has been changed but the effect is unchanged - renamedOptions = { - eqeq : "eqeqeq", - vars : "onevar", - windows: "wsh", - sloppy : "strict" - }, +exports.errors = {}; +exports.warnings = {}; +exports.info = {}; - declared, // Globals that were declared using /*global ... */ syntax. - exported, // Variables that are used outside of the current file. +_.each(errors, function (desc, code) { + exports.errors[code] = { code: code, desc: desc }; +}); - functionicity = [ - "closure", "exception", "global", "label", - "outer", "unused", "var" - ], +_.each(warnings, function (desc, code) { + exports.warnings[code] = { code: code, desc: desc }; +}); - funct, // The current function - functions, // All of the functions +_.each(info, function (desc, code) { + exports.info[code] = { code: code, desc: desc }; +}); - global, // The global scope - implied, // Implied globals - inblock, - indent, - lookahead, - lex, - member, - membersOnly, - noreach, - predefined, // Global variables defined by option +})() +},{"underscore":8}],9:[function(require,module,exports){ +(function(){/* + * Lexical analysis and token construction. + */ - scope, // The current scope - stack, - unuseds, - urls, - warnings, +"use strict"; - extraModules = [], - emitter = new events.EventEmitter(); +var _ = require("underscore"); +var events = require("events"); +var reg = require("./reg.js"); +var state = require("./state.js").state; - function checkOption(name, t) { - name = name.trim(); +// Some of these token types are from JavaScript Parser API +// while others are specific to JSHint parser. +// JS Parser API: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API - if (/^[+-]W\d{3}$/g.test(name)) { - return true; - } +var Token = { + Identifier: 1, + Punctuator: 2, + NumericLiteral: 3, + StringLiteral: 4, + Comment: 5, + Keyword: 6, + NullLiteral: 7, + BooleanLiteral: 8, + RegExp: 9 +}; - if (valOptions[name] === undefined && boolOptions[name] === undefined) { - if (t.type !== "jslint") { - error("E001", t, name); - return false; - } - } +// This is auto generated from the unicode tables. +// The tables are at: +// http://www.fileformat.info/info/unicode/category/Lu/list.htm +// http://www.fileformat.info/info/unicode/category/Ll/list.htm +// http://www.fileformat.info/info/unicode/category/Lt/list.htm +// http://www.fileformat.info/info/unicode/category/Lm/list.htm +// http://www.fileformat.info/info/unicode/category/Lo/list.htm +// http://www.fileformat.info/info/unicode/category/Nl/list.htm - return true; - } +var unicodeLetterTable = [ + 170, 170, 181, 181, 186, 186, 192, 214, + 216, 246, 248, 705, 710, 721, 736, 740, 748, 748, 750, 750, + 880, 884, 886, 887, 890, 893, 902, 902, 904, 906, 908, 908, + 910, 929, 931, 1013, 1015, 1153, 1162, 1319, 1329, 1366, + 1369, 1369, 1377, 1415, 1488, 1514, 1520, 1522, 1568, 1610, + 1646, 1647, 1649, 1747, 1749, 1749, 1765, 1766, 1774, 1775, + 1786, 1788, 1791, 1791, 1808, 1808, 1810, 1839, 1869, 1957, + 1969, 1969, 1994, 2026, 2036, 2037, 2042, 2042, 2048, 2069, + 2074, 2074, 2084, 2084, 2088, 2088, 2112, 2136, 2308, 2361, + 2365, 2365, 2384, 2384, 2392, 2401, 2417, 2423, 2425, 2431, + 2437, 2444, 2447, 2448, 2451, 2472, 2474, 2480, 2482, 2482, + 2486, 2489, 2493, 2493, 2510, 2510, 2524, 2525, 2527, 2529, + 2544, 2545, 2565, 2570, 2575, 2576, 2579, 2600, 2602, 2608, + 2610, 2611, 2613, 2614, 2616, 2617, 2649, 2652, 2654, 2654, + 2674, 2676, 2693, 2701, 2703, 2705, 2707, 2728, 2730, 2736, + 2738, 2739, 2741, 2745, 2749, 2749, 2768, 2768, 2784, 2785, + 2821, 2828, 2831, 2832, 2835, 2856, 2858, 2864, 2866, 2867, + 2869, 2873, 2877, 2877, 2908, 2909, 2911, 2913, 2929, 2929, + 2947, 2947, 2949, 2954, 2958, 2960, 2962, 2965, 2969, 2970, + 2972, 2972, 2974, 2975, 2979, 2980, 2984, 2986, 2990, 3001, + 3024, 3024, 3077, 3084, 3086, 3088, 3090, 3112, 3114, 3123, + 3125, 3129, 3133, 3133, 3160, 3161, 3168, 3169, 3205, 3212, + 3214, 3216, 3218, 3240, 3242, 3251, 3253, 3257, 3261, 3261, + 3294, 3294, 3296, 3297, 3313, 3314, 3333, 3340, 3342, 3344, + 3346, 3386, 3389, 3389, 3406, 3406, 3424, 3425, 3450, 3455, + 3461, 3478, 3482, 3505, 3507, 3515, 3517, 3517, 3520, 3526, + 3585, 3632, 3634, 3635, 3648, 3654, 3713, 3714, 3716, 3716, + 3719, 3720, 3722, 3722, 3725, 3725, 3732, 3735, 3737, 3743, + 3745, 3747, 3749, 3749, 3751, 3751, 3754, 3755, 3757, 3760, + 3762, 3763, 3773, 3773, 3776, 3780, 3782, 3782, 3804, 3805, + 3840, 3840, 3904, 3911, 3913, 3948, 3976, 3980, 4096, 4138, + 4159, 4159, 4176, 4181, 4186, 4189, 4193, 4193, 4197, 4198, + 4206, 4208, 4213, 4225, 4238, 4238, 4256, 4293, 4304, 4346, + 4348, 4348, 4352, 4680, 4682, 4685, 4688, 4694, 4696, 4696, + 4698, 4701, 4704, 4744, 4746, 4749, 4752, 4784, 4786, 4789, + 4792, 4798, 4800, 4800, 4802, 4805, 4808, 4822, 4824, 4880, + 4882, 4885, 4888, 4954, 4992, 5007, 5024, 5108, 5121, 5740, + 5743, 5759, 5761, 5786, 5792, 5866, 5870, 5872, 5888, 5900, + 5902, 5905, 5920, 5937, 5952, 5969, 5984, 5996, 5998, 6000, + 6016, 6067, 6103, 6103, 6108, 6108, 6176, 6263, 6272, 6312, + 6314, 6314, 6320, 6389, 6400, 6428, 6480, 6509, 6512, 6516, + 6528, 6571, 6593, 6599, 6656, 6678, 6688, 6740, 6823, 6823, + 6917, 6963, 6981, 6987, 7043, 7072, 7086, 7087, 7104, 7141, + 7168, 7203, 7245, 7247, 7258, 7293, 7401, 7404, 7406, 7409, + 7424, 7615, 7680, 7957, 7960, 7965, 7968, 8005, 8008, 8013, + 8016, 8023, 8025, 8025, 8027, 8027, 8029, 8029, 8031, 8061, + 8064, 8116, 8118, 8124, 8126, 8126, 8130, 8132, 8134, 8140, + 8144, 8147, 8150, 8155, 8160, 8172, 8178, 8180, 8182, 8188, + 8305, 8305, 8319, 8319, 8336, 8348, 8450, 8450, 8455, 8455, + 8458, 8467, 8469, 8469, 8473, 8477, 8484, 8484, 8486, 8486, + 8488, 8488, 8490, 8493, 8495, 8505, 8508, 8511, 8517, 8521, + 8526, 8526, 8544, 8584, 11264, 11310, 11312, 11358, + 11360, 11492, 11499, 11502, 11520, 11557, 11568, 11621, + 11631, 11631, 11648, 11670, 11680, 11686, 11688, 11694, + 11696, 11702, 11704, 11710, 11712, 11718, 11720, 11726, + 11728, 11734, 11736, 11742, 11823, 11823, 12293, 12295, + 12321, 12329, 12337, 12341, 12344, 12348, 12353, 12438, + 12445, 12447, 12449, 12538, 12540, 12543, 12549, 12589, + 12593, 12686, 12704, 12730, 12784, 12799, 13312, 13312, + 19893, 19893, 19968, 19968, 40907, 40907, 40960, 42124, + 42192, 42237, 42240, 42508, 42512, 42527, 42538, 42539, + 42560, 42606, 42623, 42647, 42656, 42735, 42775, 42783, + 42786, 42888, 42891, 42894, 42896, 42897, 42912, 42921, + 43002, 43009, 43011, 43013, 43015, 43018, 43020, 43042, + 43072, 43123, 43138, 43187, 43250, 43255, 43259, 43259, + 43274, 43301, 43312, 43334, 43360, 43388, 43396, 43442, + 43471, 43471, 43520, 43560, 43584, 43586, 43588, 43595, + 43616, 43638, 43642, 43642, 43648, 43695, 43697, 43697, + 43701, 43702, 43705, 43709, 43712, 43712, 43714, 43714, + 43739, 43741, 43777, 43782, 43785, 43790, 43793, 43798, + 43808, 43814, 43816, 43822, 43968, 44002, 44032, 44032, + 55203, 55203, 55216, 55238, 55243, 55291, 63744, 64045, + 64048, 64109, 64112, 64217, 64256, 64262, 64275, 64279, + 64285, 64285, 64287, 64296, 64298, 64310, 64312, 64316, + 64318, 64318, 64320, 64321, 64323, 64324, 64326, 64433, + 64467, 64829, 64848, 64911, 64914, 64967, 65008, 65019, + 65136, 65140, 65142, 65276, 65313, 65338, 65345, 65370, + 65382, 65470, 65474, 65479, 65482, 65487, 65490, 65495, + 65498, 65500, 65536, 65547, 65549, 65574, 65576, 65594, + 65596, 65597, 65599, 65613, 65616, 65629, 65664, 65786, + 65856, 65908, 66176, 66204, 66208, 66256, 66304, 66334, + 66352, 66378, 66432, 66461, 66464, 66499, 66504, 66511, + 66513, 66517, 66560, 66717, 67584, 67589, 67592, 67592, + 67594, 67637, 67639, 67640, 67644, 67644, 67647, 67669, + 67840, 67861, 67872, 67897, 68096, 68096, 68112, 68115, + 68117, 68119, 68121, 68147, 68192, 68220, 68352, 68405, + 68416, 68437, 68448, 68466, 68608, 68680, 69635, 69687, + 69763, 69807, 73728, 74606, 74752, 74850, 77824, 78894, + 92160, 92728, 110592, 110593, 119808, 119892, 119894, 119964, + 119966, 119967, 119970, 119970, 119973, 119974, 119977, 119980, + 119982, 119993, 119995, 119995, 119997, 120003, 120005, 120069, + 120071, 120074, 120077, 120084, 120086, 120092, 120094, 120121, + 120123, 120126, 120128, 120132, 120134, 120134, 120138, 120144, + 120146, 120485, 120488, 120512, 120514, 120538, 120540, 120570, + 120572, 120596, 120598, 120628, 120630, 120654, 120656, 120686, + 120688, 120712, 120714, 120744, 120746, 120770, 120772, 120779, + 131072, 131072, 173782, 173782, 173824, 173824, 177972, 177972, + 177984, 177984, 178205, 178205, 194560, 195101 +]; - function isString(obj) { - return Object.prototype.toString.call(obj) === "[object String]"; - } +var identifierStartTable = []; - function isIdentifier(tkn, value) { - if (!tkn) - return false; +for (var i = 0; i < 128; i++) { + identifierStartTable[i] = + i === 36 || // $ + i >= 65 && i <= 90 || // A-Z + i === 95 || // _ + i >= 97 && i <= 122; // a-z +} - if (!tkn.identifier || tkn.value !== value) - return false; +var identifierPartTable = []; - return true; - } +for (var i = 0; i < 128; i++) { + identifierPartTable[i] = + identifierStartTable[i] || // $, _, A-Z, a-z + i >= 48 && i <= 57; // 0-9 +} - function isReserved(token) { - if (!token.reserved) { - return false; - } +// Object that handles postponed lexing verifications that checks the parsed +// environment state. - if (token.meta && token.meta.isFutureReservedWord) { - // ES3 FutureReservedWord in an ES5 environment. - if (state.option.inES5(true) && !token.meta.es5) { - return false; - } +function asyncTrigger() { + var _checks = []; - // Some ES5 FutureReservedWord identifiers are active only - // within a strict mode environment. - if (token.meta.strictOnly) { - if (!state.option.strict && !state.directive["use strict"]) { - return false; - } - } + return { + push: function (fn) { + _checks.push(fn); + }, - if (token.isProperty) { - return false; + check: function () { + for (var check = 0; check < _checks.length; ++check) { + _checks[check](); } + + _checks.splice(0, _checks.length); } + }; +} - return true; - } +/* + * Lexer for JSHint. + * + * This object does a char-by-char scan of the provided source code + * and produces a sequence of tokens. + * + * var lex = new Lexer("var i = 0;"); + * lex.start(); + * lex.token(); // returns the next token + * + * You have to use the token() method to move the lexer forward + * but you don't have to use its return value to get tokens. In addition + * to token() method returning the next token, the Lexer object also + * emits events. + * + * lex.on("Identifier", function (data) { + * if (data.name.indexOf("_") >= 0) { + * // Produce a warning. + * } + * }); + * + * Note that the token() method returns tokens in a JSLint-compatible + * format while the event emitter uses a slightly modified version of + * Mozilla's JavaScript Parser API. Eventually, we will move away from + * JSLint format. + */ +function Lexer(source) { + var lines = source; - function supplant(str, data) { - return str.replace(/\{([^{}]*)\}/g, function (a, b) { - var r = data[b]; - return typeof r === "string" || typeof r === "number" ? r : a; - }); + if (typeof lines === "string") { + lines = lines + .replace(/\r\n/g, "\n") + .replace(/\r/g, "\n") + .split("\n"); } - function combine(t, o) { - var n; - for (n in o) { - if (_.has(o, n) && !_.has(JSHINT.blacklist, n)) { - t[n] = o[n]; - } - } - } + // If the first line is a shebang (#!), make it a blank and move on. + // Shebangs are used by Node scripts. - function updatePredefined() { - Object.keys(JSHINT.blacklist).forEach(function (key) { - delete predefined[key]; - }); + if (lines[0] && lines[0].substr(0, 2) === "#!") { + lines[0] = ""; } - function assume() { - if (state.option.es5) { - warning("I003"); - } - if (state.option.couch) { - combine(predefined, vars.couch); - } - - if (state.option.rhino) { - combine(predefined, vars.rhino); - } + this.emitter = new events.EventEmitter(); + this.source = source; + this.setLines(lines); + this.prereg = true; - if (state.option.phantom) { - combine(predefined, vars.phantom); - } + this.line = 0; + this.char = 1; + this.from = 1; + this.input = ""; - if (state.option.prototypejs) { - combine(predefined, vars.prototypejs); - } + for (var i = 0; i < state.option.indent; i += 1) { + state.tab += " "; + } +} - if (state.option.node) { - combine(predefined, vars.node); - } +Lexer.prototype = { + _lines: [], - if (state.option.devel) { - combine(predefined, vars.devel); - } + getLines: function () { + this._lines = state.lines; + return this._lines; + }, - if (state.option.dojo) { - combine(predefined, vars.dojo); - } + setLines: function (val) { + this._lines = val; + state.lines = this._lines; + }, - if (state.option.browser) { - combine(predefined, vars.browser); - } - - if (state.option.nonstandard) { - combine(predefined, vars.nonstandard); - } - - if (state.option.jquery) { - combine(predefined, vars.jquery); - } - - if (state.option.mootools) { - combine(predefined, vars.mootools); - } + /* + * Return the next i character without actually moving the + * char pointer. + */ + peek: function (i) { + return this.input.charAt(i || 0); + }, - if (state.option.worker) { - combine(predefined, vars.worker); - } + /* + * Move the char pointer forward i times. + */ + skip: function (i) { + i = i || 1; + this.char += i; + this.input = this.input.slice(i); + }, - if (state.option.wsh) { - combine(predefined, vars.wsh); - } + /* + * Subscribe to a token event. The API for this method is similar + * Underscore.js i.e. you can subscribe to multiple events with + * one call: + * + * lex.on("Identifier Number", function (data) { + * // ... + * }); + */ + on: function (names, listener) { + names.split(" ").forEach(function (name) { + this.emitter.on(name, listener); + }.bind(this)); + }, - if (state.option.globalstrict && state.option.strict !== false) { - state.option.strict = true; - } + /* + * Trigger a token event. All arguments will be passed to each + * listener. + */ + trigger: function () { + this.emitter.emit.apply(this.emitter, Array.prototype.slice.call(arguments)); + }, - if (state.option.yui) { - combine(predefined, vars.yui); - } + /* + * Postpone a token event. the checking condition is set as + * last parameter, and the trigger function is called in a + * stored callback. To be later called using the check() function + * by the parser. This avoids parser's peek() to give the lexer + * a false context. + */ + triggerAsync: function (type, args, checks, fn) { + checks.push(function () { + if (fn()) { + this.trigger(type, args); + } + }.bind(this)); + }, - // Let's assume that chronologically ES3 < ES5 < ES6/ESNext < Moz + /* + * Extract a punctuator out of the next sequence of characters + * or return 'null' if its not possible. + * + * This method's implementation was heavily influenced by the + * scanPunctuator function in the Esprima parser's source code. + */ + scanPunctuator: function () { + var ch1 = this.peek(); + var ch2, ch3, ch4; - state.option.inMoz = function (strict) { - if (strict) { - return state.option.moz && !state.option.esnext; + switch (ch1) { + // Most common single-character punctuators + case ".": + if ((/^[0-9]$/).test(this.peek(1))) { + return null; } - return state.option.moz; - }; - - state.option.inESNext = function (strict) { - if (strict) { - return !state.option.moz && state.option.esnext; + if (this.peek(1) === "." && this.peek(2) === ".") { + return { + type: Token.Punctuator, + value: "..." + }; } - return state.option.moz || state.option.esnext; - }; + /* falls through */ + case "(": + case ")": + case ";": + case ",": + case "{": + case "}": + case "[": + case "]": + case ":": + case "~": + case "?": + return { + type: Token.Punctuator, + value: ch1 + }; - state.option.inES5 = function (/* strict */) { - return !state.option.es3; - }; + // A pound sign (for Node shebangs) + case "#": + return { + type: Token.Punctuator, + value: ch1 + }; - state.option.inES3 = function (strict) { - if (strict) { - return !state.option.moz && !state.option.esnext && state.option.es3; - } - return state.option.es3; - }; - } + // We're at the end of input + case "": + return null; + } - // Produce an error warning. - function quit(code, line, chr) { - var percentage = Math.floor((line / state.lines.length) * 100); - var message = messages.errors[code].desc; + // Peek more characters - throw { - name: "JSHintError", - line: line, - character: chr, - message: message + " (" + percentage + "% scanned).", - raw: message - }; - } + ch2 = this.peek(1); + ch3 = this.peek(2); + ch4 = this.peek(3); - function isundef(scope, code, token, a) { - return JSHINT.undefs.push([scope, code, token, a]); - } + // 4-character punctuator: >>>= - function warning(code, t, a, b, c, d) { - var ch, l, w, msg; + if (ch1 === ">" && ch2 === ">" && ch3 === ">" && ch4 === "=") { + return { + type: Token.Punctuator, + value: ">>>=" + }; + } - if (/^W\d{3}$/.test(code)) { - if (state.ignored[code]) - return; + // 3-character punctuators: === !== >>> <<= >>= - msg = messages.warnings[code]; - } else if (/E\d{3}/.test(code)) { - msg = messages.errors[code]; - } else if (/I\d{3}/.test(code)) { - msg = messages.info[code]; + if (ch1 === "=" && ch2 === "=" && ch3 === "=") { + return { + type: Token.Punctuator, + value: "===" + }; } - t = t || state.tokens.next; - if (t.id === "(end)") { // `~ - t = state.tokens.curr; + if (ch1 === "!" && ch2 === "=" && ch3 === "=") { + return { + type: Token.Punctuator, + value: "!==" + }; } - l = t.line || 0; - ch = t.from || 0; + if (ch1 === ">" && ch2 === ">" && ch3 === ">") { + return { + type: Token.Punctuator, + value: ">>>" + }; + } - w = { - id: "(error)", - raw: msg.desc, - code: msg.code, - evidence: state.lines[l - 1] || "", - line: l, - character: ch, - scope: JSHINT.scope, - a: a, - b: b, - c: c, - d: d - }; + if (ch1 === "<" && ch2 === "<" && ch3 === "=") { + return { + type: Token.Punctuator, + value: "<<=" + }; + } - w.reason = supplant(msg.desc, w); - JSHINT.errors.push(w); + if (ch1 === ">" && ch2 === ">" && ch3 === "=") { + return { + type: Token.Punctuator, + value: ">>=" + }; + } - if (state.option.passfail) { - quit("E042", l, ch); + // Fat arrow punctuator + if (ch1 === "=" && ch2 === ">") { + return { + type: Token.Punctuator, + value: ch1 + ch2 + }; } - warnings += 1; - if (warnings >= state.option.maxerr) { - quit("E043", l, ch); + // 2-character punctuators: <= >= == != ++ -- << >> && || + // += -= *= %= &= |= ^= (but not /=, see below) + if (ch1 === ch2 && ("+-<>&|".indexOf(ch1) >= 0)) { + return { + type: Token.Punctuator, + value: ch1 + ch2 + }; } - return w; - } + if ("<>=!+-*%&|^".indexOf(ch1) >= 0) { + if (ch2 === "=") { + return { + type: Token.Punctuator, + value: ch1 + ch2 + }; + } - function warningAt(m, l, ch, a, b, c, d) { - return warning(m, { - line: l, - from: ch - }, a, b, c, d); - } - - function error(m, t, a, b, c, d) { - warning(m, t, a, b, c, d); - } - - function errorAt(m, l, ch, a, b, c, d) { - return error(m, { - line: l, - from: ch - }, a, b, c, d); - } + return { + type: Token.Punctuator, + value: ch1 + }; + } - // Tracking of "internal" scripts, like eval containing a static string - function addInternalSrc(elem, src) { - var i; - i = { - id: "(internal)", - elem: elem, - value: src - }; - JSHINT.internals.push(i); - return i; - } + // Special case: /=. We need to make sure that this is an + // operator and not a regular expression. - function addlabel(t, type, tkn, islet) { - // Define t in the current function in the current scope. - if (type === "exception") { - if (_.has(funct["(context)"], t)) { - if (funct[t] !== true && !state.option.node) { - warning("W002", state.tokens.next, t); - } + if (ch1 === "/") { + if (ch2 === "=" && /\/=(?!(\S*\/[gim]?))/.test(this.input)) { + // /= is not a part of a regular expression, return it as a + // punctuator. + return { + type: Token.Punctuator, + value: "/=" + }; } - } - if (_.has(funct, t) && !funct["(global)"]) { - if (funct[t] === true) { - if (state.option.latedef) { - if ((state.option.latedef === true && _.contains([funct[t], type], "unction")) || - !_.contains([funct[t], type], "unction")) { - warning("W003", state.tokens.next, t); - } - } - } else { - if (!state.option.shadow && type !== "exception" || - (funct["(blockscope)"].getlabel(t))) { - warning("W004", state.tokens.next, t); - } - } + return { + type: Token.Punctuator, + value: "/" + }; } - // a double definition of a let variable in same block throws a TypeError - if (funct["(blockscope)"] && funct["(blockscope)"].current.has(t)) { - error("E044", state.tokens.next, t); - } + return null; + }, - // if the identifier is from a let, adds it only to the current blockscope - if (islet) { - funct["(blockscope)"].current.add(t, type, state.tokens.curr); - } else { + /* + * Extract a comment out of the next sequence of characters and/or + * lines or return 'null' if its not possible. Since comments can + * span across multiple lines this method has to move the char + * pointer. + * + * In addition to normal JavaScript comments (// and /*) this method + * also recognizes JSHint- and JSLint-specific comments such as + * /*jshint, /*jslint, /*globals and so on. + */ + scanComments: function () { + var ch1 = this.peek(); + var ch2 = this.peek(1); + var rest = this.input.substr(2); + var startLine = this.line; + var startChar = this.char; - funct[t] = type; + // Create a comment token object and make sure it + // has all the data JSHint needs to work with special + // comments. - if (tkn) { - funct["(tokens)"][t] = tkn; + function commentToken(label, body, opt) { + var special = ["jshint", "jslint", "members", "member", "globals", "global", "exported"]; + var isSpecial = false; + var value = label + body; + var commentType = "plain"; + opt = opt || {}; + + if (opt.isMultiline) { + value += "*/"; } - if (funct["(global)"]) { - global[t] = funct; - if (_.has(implied, t)) { - if (state.option.latedef) { - if ((state.option.latedef === true && _.contains([funct[t], type], "unction")) || - !_.contains([funct[t], type], "unction")) { - warning("W003", state.tokens.next, t); - } - } + special.forEach(function (str) { + if (isSpecial) { + return; + } - delete implied[t]; + // Don't recognize any special comments other than jshint for single-line + // comments. This introduced many problems with legit comments. + if (label === "//" && str !== "jshint") { + return; } - } else { - scope[t] = funct; - } - } - } - function doOption() { - var nt = state.tokens.next; - var body = nt.body.split(",").map(function (s) { return s.trim(); }); - var predef = {}; + if (body.substr(0, str.length) === str) { + isSpecial = true; + label = label + str; + body = body.substr(str.length); + } - if (nt.type === "globals") { - body.forEach(function (g) { - g = g.split(":"); - var key = g[0]; - var val = g[1]; + if (!isSpecial && body.charAt(0) === " " && body.substr(1, str.length) === str) { + isSpecial = true; + label = label + " " + str; + body = body.substr(str.length + 1); + } - if (key.charAt(0) === "-") { - key = key.slice(1); - val = false; + if (!isSpecial) { + return; + } - JSHINT.blacklist[key] = key; - updatePredefined(); - } else { - predef[key] = (val === "true"); + switch (str) { + case "member": + commentType = "members"; + break; + case "global": + commentType = "globals"; + break; + default: + commentType = str; } }); - combine(predefined, predef); - - for (var key in predef) { - if (_.has(predef, key)) { - declared[key] = nt; - } - } + return { + type: Token.Comment, + commentType: commentType, + value: value, + body: body, + isSpecial: isSpecial, + isMultiline: opt.isMultiline || false, + isMalformed: opt.isMalformed || false + }; } - if (nt.type === "exported") { - body.forEach(function (e) { - exported[e] = true; + // End of unbegun comment. Raise an error and skip that input. + if (ch1 === "*" && ch2 === "/") { + this.trigger("error", { + code: "E018", + line: startLine, + character: startChar }); - } - - if (nt.type === "members") { - membersOnly = membersOnly || {}; - - body.forEach(function (m) { - var ch1 = m.charAt(0); - var ch2 = m.charAt(m.length - 1); - - if (ch1 === ch2 && (ch1 === "\"" || ch1 === "'")) { - m = m - .substr(1, m.length - 2) - .replace("\\b", "\b") - .replace("\\t", "\t") - .replace("\\n", "\n") - .replace("\\v", "\v") - .replace("\\f", "\f") - .replace("\\r", "\r") - .replace("\\\\", "\\") - .replace("\\\"", "\""); - } - membersOnly[m] = false; - }); + this.skip(2); + return null; } - var numvals = [ - "maxstatements", - "maxparams", - "maxdepth", - "maxcomplexity", - "maxerr", - "maxlen", - "indent" - ]; + // Comments must start either with // or /* + if (ch1 !== "/" || (ch2 !== "*" && ch2 !== "/")) { + return null; + } - if (nt.type === "jshint" || nt.type === "jslint") { - body.forEach(function (g) { - g = g.split(":"); - var key = (g[0] || "").trim(); - var val = (g[1] || "").trim(); + // One-line comment + if (ch2 === "/") { + this.skip(this.input.length); // Skip to the EOL. + return commentToken("//", rest); + } - if (!checkOption(key, nt)) { - return; - } + var body = ""; - if (numvals.indexOf(key) >= 0) { + /* Multi-line comment */ + if (ch2 === "*") { + this.skip(2); - // GH988 - numeric options can be disabled by setting them to `false` - if (val !== "false") { - val = +val; + while (this.peek() !== "*" || this.peek(1) !== "/") { + if (this.peek() === "") { // End of Line + body += "\n"; - if (typeof val !== "number" || !isFinite(val) || val <= 0 || Math.floor(val) !== val) { - error("E032", nt, g[1].trim()); - return; - } - - if (key === "indent") { - state.option["(explicitIndent)"] = true; - } - state.option[key] = val; - } else { - if (key === "indent") { - state.option["(explicitIndent)"] = false; - } else { - state.option[key] = false; - } - } - - return; - } + // If we hit EOF and our comment is still unclosed, + // trigger an error and end the comment implicitly. + if (!this.nextLine()) { + this.trigger("error", { + code: "E017", + line: startLine, + character: startChar + }); - if (key === "validthis") { - // `validthis` is valid only within a function scope. - if (funct["(global)"]) { - error("E009"); - } else { - if (val === "true" || val === "false") { - state.option.validthis = (val === "true"); - } else { - error("E002", nt); - } + return commentToken("/*", body, { + isMultiline: true, + isMalformed: true + }); } - return; + } else { + body += this.peek(); + this.skip(); } + } - if (key === "quotmark") { - switch (val) { - case "true": - case "false": - state.option.quotmark = (val === "true"); - break; - case "double": - case "single": - state.option.quotmark = val; - break; - default: - error("E002", nt); - } - return; - } + this.skip(2); + return commentToken("/*", body, { isMultiline: true }); + } + }, - if (key === "unused") { - switch (val) { - case "true": - state.option.unused = true; - break; - case "false": - state.option.unused = false; - break; - case "vars": - case "strict": - state.option.unused = val; - break; - default: - error("E002", nt); - } - return; - } + /* + * Extract a keyword out of the next sequence of characters or + * return 'null' if its not possible. + */ + scanKeyword: function () { + var result = /^[a-zA-Z_$][a-zA-Z0-9_$]*/.exec(this.input); + var keywords = [ + "if", "in", "do", "var", "for", "new", + "try", "let", "this", "else", "case", + "void", "with", "enum", "while", "break", + "catch", "throw", "const", "yield", "class", + "super", "return", "typeof", "delete", + "switch", "export", "import", "default", + "finally", "extends", "function", "continue", + "debugger", "instanceof" + ]; - if (key === "latedef") { - switch (val) { - case "true": - state.option.latedef = true; - break; - case "false": - state.option.latedef = false; - break; - case "nofunc": - state.option.latedef = "nofunc"; - break; - default: - error("E002", nt); - } - return; - } + if (result && keywords.indexOf(result[0]) >= 0) { + return { + type: Token.Keyword, + value: result[0] + }; + } - var match = /^([+-])(W\d{3})$/g.exec(key); - if (match) { - // ignore for -W..., unignore for +W... - state.ignored[match[2]] = (match[1] === "-"); - return; - } + return null; + }, - var tn; - if (val === "true" || val === "false") { - if (nt.type === "jslint") { - tn = renamedOptions[key] || key; - state.option[tn] = (val === "true"); + /* + * Extract a JavaScript identifier out of the next sequence of + * characters or return 'null' if its not possible. In addition, + * to Identifier this method can also produce BooleanLiteral + * (true/false) and NullLiteral (null). + */ + scanIdentifier: function () { + var id = ""; + var index = 0; + var type, char; - if (invertedOptions[tn] !== undefined) { - state.option[tn] = !state.option[tn]; - } - } else { - state.option[key] = (val === "true"); - } + // Detects any character in the Unicode categories "Uppercase + // letter (Lu)", "Lowercase letter (Ll)", "Titlecase letter + // (Lt)", "Modifier letter (Lm)", "Other letter (Lo)", or + // "Letter number (Nl)". + // + // Both approach and unicodeLetterTable were borrowed from + // Google's Traceur. - if (key === "newcap") { - state.option["(explicitNewcap)"] = true; - } - return; + function isUnicodeLetter(code) { + for (var i = 0; i < unicodeLetterTable.length;) { + if (code < unicodeLetterTable[i++]) { + return false; } - error("E002", nt); - }); + if (code <= unicodeLetterTable[i++]) { + return true; + } + } - assume(); + return false; } - } - - // We need a peek function. If it has an argument, it peeks that much farther - // ahead. It is used to distinguish - // for ( var i in ... - // from - // for ( var i = ... - - function peek(p) { - var i = p || 0, j = 0, t; - while (j <= i) { - t = lookahead[j]; - if (!t) { - t = lookahead[j] = lex.token(); - } - j += 1; + function isHexDigit(str) { + return (/^[0-9a-fA-F]$/).test(str); } - return t; - } - // Produce the next token. It looks for programming errors. + var readUnicodeEscapeSequence = function () { + /*jshint validthis:true */ + index += 1; - function advance(id, t) { - switch (state.tokens.curr.id) { - case "(number)": - if (state.tokens.next.id === ".") { - warning("W005", state.tokens.curr); - } - break; - case "-": - if (state.tokens.next.id === "-" || state.tokens.next.id === "--") { - warning("W006"); - } - break; - case "+": - if (state.tokens.next.id === "+" || state.tokens.next.id === "++") { - warning("W007"); + if (this.peek(index) !== "u") { + return null; } - break; - } - if (state.tokens.curr.type === "(string)" || state.tokens.curr.identifier) { - anonname = state.tokens.curr.value; - } + var ch1 = this.peek(index + 1); + var ch2 = this.peek(index + 2); + var ch3 = this.peek(index + 3); + var ch4 = this.peek(index + 4); + var code; - if (id && state.tokens.next.id !== id) { - if (t) { - if (state.tokens.next.id === "(end)") { - error("E019", t, t.id); - } else { - error("E020", state.tokens.next, id, t.id, t.line, state.tokens.next.value); + if (isHexDigit(ch1) && isHexDigit(ch2) && isHexDigit(ch3) && isHexDigit(ch4)) { + code = parseInt(ch1 + ch2 + ch3 + ch4, 16); + + if (isUnicodeLetter(code)) { + index += 5; + return "\\u" + ch1 + ch2 + ch3 + ch4; } - } else if (state.tokens.next.type !== "(identifier)" || state.tokens.next.value !== id) { - warning("W116", state.tokens.next, id, state.tokens.next.value); + + return null; } - } - state.tokens.prev = state.tokens.curr; - state.tokens.curr = state.tokens.next; - for (;;) { - state.tokens.next = lookahead.shift() || lex.token(); + return null; + }.bind(this); - if (!state.tokens.next) { // No more tokens left, give up - quit("E041", state.tokens.curr.line); - } + var getIdentifierStart = function () { + /*jshint validthis:true */ + var chr = this.peek(index); + var code = chr.charCodeAt(0); - if (state.tokens.next.id === "(end)" || state.tokens.next.id === "(error)") { - return; + if (code === 92) { + return readUnicodeEscapeSequence(); } - if (state.tokens.next.check) { - state.tokens.next.check(); - } - - if (state.tokens.next.isSpecial) { - doOption(); - } else { - if (state.tokens.next.id !== "(endline)") { - break; + if (code < 128) { + if (identifierStartTable[code]) { + index += 1; + return chr; } - } - } - } - - // This is the heart of JSHINT, the Pratt parser. In addition to parsing, it - // is looking for ad hoc lint patterns. We add .fud to Pratt's model, which is - // like .nud except that it is only used on the first token of a statement. - // Having .fud makes it much easier to define statement-oriented languages like - // JavaScript. I retained Pratt's nomenclature. - - // .nud Null denotation - // .fud First null denotation - // .led Left denotation - // lbp Left binding power - // rbp Right binding power - - // They are elements of the parsing method called Top Down Operator Precedence. - - function expression(rbp, initial) { - var left, isArray = false, isObject = false, isLetExpr = false; - // if current expression is a let expression - if (!initial && state.tokens.next.value === "let" && peek(0).value === "(") { - if (!state.option.inMoz(true)) { - warning("W118", state.tokens.next, "let expressions"); + return null; } - isLetExpr = true; - // create a new block scope we use only for the current expression - funct["(blockscope)"].stack(); - advance("let"); - advance("("); - state.syntax["let"].fud.call(state.syntax["let"].fud, false); - advance(")"); - } - if (state.tokens.next.id === "(end)") - error("E006", state.tokens.curr); + if (isUnicodeLetter(code)) { + index += 1; + return chr; + } - advance(); + return null; + }.bind(this); - if (initial) { - anonname = "anonymous"; - funct["(verb)"] = state.tokens.curr.value; - } + var getIdentifierPart = function () { + /*jshint validthis:true */ + var chr = this.peek(index); + var code = chr.charCodeAt(0); - if (initial === true && state.tokens.curr.fud) { - left = state.tokens.curr.fud(); - } else { - if (state.tokens.curr.nud) { - left = state.tokens.curr.nud(); - } else { - error("E030", state.tokens.curr, state.tokens.curr.id); + if (code === 92) { + return readUnicodeEscapeSequence(); } - var end_of_expr = state.tokens.next.identifier && - !state.tokens.curr.led && - state.tokens.curr.line !== state.tokens.next.line; - while (rbp < state.tokens.next.lbp && !end_of_expr) { - isArray = state.tokens.curr.value === "Array"; - isObject = state.tokens.curr.value === "Object"; - - // #527, new Foo.Array(), Foo.Array(), new Foo.Object(), Foo.Object() - // Line breaks in IfStatement heads exist to satisfy the checkJSHint - // "Line too long." error. - if (left && (left.value || (left.first && left.first.value))) { - // If the left.value is not "new", or the left.first.value is a "." - // then safely assume that this is not "new Array()" and possibly - // not "new Object()"... - if (left.value !== "new" || - (left.first && left.first.value && left.first.value === ".")) { - isArray = false; - // ...In the case of Object, if the left.value and state.tokens.curr.value - // are not equal, then safely assume that this not "new Object()" - if (left.value !== state.tokens.curr.value) { - isObject = false; - } - } + if (code < 128) { + if (identifierPartTable[code]) { + index += 1; + return chr; } - advance(); + return null; + } - if (isArray && state.tokens.curr.id === "(" && state.tokens.next.id === ")") { - warning("W009", state.tokens.curr); - } + if (isUnicodeLetter(code)) { + index += 1; + return chr; + } - if (isObject && state.tokens.curr.id === "(" && state.tokens.next.id === ")") { - warning("W010", state.tokens.curr); - } + return null; + }.bind(this); - if (left && state.tokens.curr.led) { - left = state.tokens.curr.led(left); - } else { - error("E033", state.tokens.curr, state.tokens.curr.id); - } - } - } - if (isLetExpr) { - funct["(blockscope)"].unstack(); + char = getIdentifierStart(); + if (char === null) { + return null; } - return left; - } + id = char; + for (;;) { + char = getIdentifierPart(); -// Functions for conformance of style. - - function adjacent(left, right) { - left = left || state.tokens.curr; - right = right || state.tokens.next; - if (state.option.white) { - if (left.character !== right.from && left.line === right.line) { - left.from += (left.character - left.from); - warning("W011", left, left.value); + if (char === null) { + break; } - } - } - function nobreak(left, right) { - left = left || state.tokens.curr; - right = right || state.tokens.next; - if (state.option.white && (left.character !== right.from || left.line !== right.line)) { - warning("W012", right, right.value); + id += char; } - } - function nospace(left, right) { - left = left || state.tokens.curr; - right = right || state.tokens.next; - if (state.option.white && !left.comment) { - if (left.line === right.line) { - adjacent(left, right); - } + switch (id) { + case "true": + case "false": + type = Token.BooleanLiteral; + break; + case "null": + type = Token.NullLiteral; + break; + default: + type = Token.Identifier; } - } - function nonadjacent(left, right) { - if (state.option.white) { - left = left || state.tokens.curr; - right = right || state.tokens.next; + return { + type: type, + value: id + }; + }, - if (left.value === ";" && right.value === ";") { - return; - } + /* + * Extract a numeric literal out of the next sequence of + * characters or return 'null' if its not possible. This method + * supports all numeric literals described in section 7.8.3 + * of the EcmaScript 5 specification. + * + * This method's implementation was heavily influenced by the + * scanNumericLiteral function in the Esprima parser's source code. + */ + scanNumericLiteral: function () { + var index = 0; + var value = ""; + var length = this.input.length; + var char = this.peek(index); + var bad; - if (left.line === right.line && left.character === right.from) { - left.from += (left.character - left.from); - warning("W013", left, left.value); - } + function isDecimalDigit(str) { + return (/^[0-9]$/).test(str); } - } - function nobreaknonadjacent(left, right) { - left = left || state.tokens.curr; - right = right || state.tokens.next; - if (!state.option.laxbreak && left.line !== right.line) { - warning("W014", right, right.id); - } else if (state.option.white) { - left = left || state.tokens.curr; - right = right || state.tokens.next; - if (left.character === right.from) { - left.from += (left.character - left.from); - warning("W013", left, left.value); - } + function isOctalDigit(str) { + return (/^[0-7]$/).test(str); } - } - function indentation(bias) { - if (!state.option.white && !state.option["(explicitIndent)"]) { - return; + function isHexDigit(str) { + return (/^[0-9a-fA-F]$/).test(str); } - if (state.tokens.next.id === "(end)") { - return; + function isIdentifierStart(ch) { + return (ch === "$") || (ch === "_") || (ch === "\\") || + (ch >= "a" && ch <= "z") || (ch >= "A" && ch <= "Z"); } - var i = indent + (bias || 0); - if (state.tokens.next.from !== i) { - warning("W015", state.tokens.next, state.tokens.next.value, i, state.tokens.next.from); - } - } + // Numbers must start either with a decimal digit or a point. - function nolinebreak(t) { - t = t || state.tokens.curr; - if (t.line !== state.tokens.next.line) { - warning("E022", t, t.value); + if (char !== "." && !isDecimalDigit(char)) { + return null; } - } + if (char !== ".") { + value = this.peek(index); + index += 1; + char = this.peek(index); - function comma(opts) { - opts = opts || {}; + if (value === "0") { + // Base-16 numbers. + if (char === "x" || char === "X") { + index += 1; + value += char; - if (!opts.peek) { - if (state.tokens.curr.line !== state.tokens.next.line) { - if (!state.option.laxcomma) { - if (comma.first) { - warning("I001"); - comma.first = false; + while (index < length) { + char = this.peek(index); + if (!isHexDigit(char)) { + break; + } + value += char; + index += 1; } - warning("W014", state.tokens.curr, state.tokens.next.value); - } - } else if (!state.tokens.curr.comment && - state.tokens.curr.character !== state.tokens.next.from && state.option.white) { - state.tokens.curr.from += (state.tokens.curr.character - state.tokens.curr.from); - warning("W011", state.tokens.curr, state.tokens.curr.value); - } - - advance(","); - } - - // TODO: This is a temporary solution to fight against false-positives in - // arrays and objects with trailing commas (see GH-363). The best solution - // would be to extract all whitespace rules out of parser. - if (state.tokens.next.value !== "]" && state.tokens.next.value !== "}") { - nonadjacent(state.tokens.curr, state.tokens.next); - } + if (value.length <= 2) { // 0x + return { + type: Token.NumericLiteral, + value: value, + isMalformed: true + }; + } - if (state.tokens.next.identifier && !(opts.property && state.option.inES5())) { - // Keywords that cannot follow a comma operator. - switch (state.tokens.next.value) { - case "break": - case "case": - case "catch": - case "continue": - case "default": - case "do": - case "else": - case "finally": - case "for": - case "if": - case "in": - case "instanceof": - case "return": - case "yield": - case "switch": - case "throw": - case "try": - case "var": - case "let": - case "while": - case "with": - error("E024", state.tokens.next, state.tokens.next.value); - return false; - } - } + if (index < length) { + char = this.peek(index); + if (isIdentifierStart(char)) { + return null; + } + } - if (state.tokens.next.type === "(punctuator)") { - switch (state.tokens.next.value) { - case "}": - case "]": - case ",": - if (opts.allowTrailing) { - return true; + return { + type: Token.NumericLiteral, + value: value, + base: 16, + isMalformed: false + }; } - /* falls through */ - case ")": - error("E024", state.tokens.next, state.tokens.next.value); - return false; - } - } - return true; - } + // Base-8 numbers. + if (isOctalDigit(char)) { + index += 1; + value += char; + bad = false; - // Functional constructors for making the symbols that will be inherited by - // tokens. + while (index < length) { + char = this.peek(index); - function symbol(s, p) { - var x = state.syntax[s]; - if (!x || typeof x !== "object") { - state.syntax[s] = x = { - id: s, - lbp: p, - value: s - }; - } - return x; - } + // Numbers like '019' (note the 9) are not valid octals + // but we still parse them and mark as malformed. - function delim(s) { - return symbol(s, 0); - } + if (isDecimalDigit(char)) { + bad = true; + } else if (!isOctalDigit(char)) { + break; + } + value += char; + index += 1; + } - function stmt(s, f) { - var x = delim(s); - x.identifier = x.reserved = true; - x.fud = f; - return x; - } + if (index < length) { + char = this.peek(index); + if (isIdentifierStart(char)) { + return null; + } + } - function blockstmt(s, f) { - var x = stmt(s, f); - x.block = true; - return x; - } + return { + type: Token.NumericLiteral, + value: value, + base: 8, + isMalformed: false + }; + } - function reserveName(x) { - var c = x.id.charAt(0); - if ((c >= "a" && c <= "z") || (c >= "A" && c <= "Z")) { - x.identifier = x.reserved = true; - } - return x; - } + // Decimal numbers that start with '0' such as '09' are illegal + // but we still parse them and return as malformed. - function prefix(s, f) { - var x = symbol(s, 150); - reserveName(x); - x.nud = (typeof f === "function") ? f : function () { - this.right = expression(150); - this.arity = "unary"; - if (this.id === "++" || this.id === "--") { - if (state.option.plusplus) { - warning("W016", this, this.id); - } else if ((!this.right.identifier || isReserved(this.right)) && - this.right.id !== "." && this.right.id !== "[") { - warning("W017", this); + if (isDecimalDigit(char)) { + index += 1; + value += char; } } - return this; - }; - return x; - } - function type(s, f) { - var x = delim(s); - x.type = s; - x.nud = f; - return x; - } + while (index < length) { + char = this.peek(index); + if (!isDecimalDigit(char)) { + break; + } + value += char; + index += 1; + } + } - function reserve(name, func) { - var x = type(name, func); - x.identifier = true; - x.reserved = true; - return x; - } + // Decimal digits. - function FutureReservedWord(name, meta) { - var x = type(name, (meta && meta.nud) || function () { - return this; - }); + if (char === ".") { + value += char; + index += 1; - meta = meta || {}; - meta.isFutureReservedWord = true; + while (index < length) { + char = this.peek(index); + if (!isDecimalDigit(char)) { + break; + } + value += char; + index += 1; + } + } - x.value = name; - x.identifier = true; - x.reserved = true; - x.meta = meta; + // Exponent part. - return x; - } + if (char === "e" || char === "E") { + value += char; + index += 1; + char = this.peek(index); - function reservevar(s, v) { - return reserve(s, function () { - if (typeof v === "function") { - v(this); + if (char === "+" || char === "-") { + value += this.peek(index); + index += 1; } - return this; - }); - } - function infix(s, f, p, w) { - var x = symbol(s, p); - reserveName(x); - x.led = function (left) { - if (!w) { - nobreaknonadjacent(state.tokens.prev, state.tokens.curr); - nonadjacent(state.tokens.curr, state.tokens.next); - } - if (s === "in" && left.id === "!") { - warning("W018", left, "!"); - } - if (typeof f === "function") { - return f(left, this); + char = this.peek(index); + if (isDecimalDigit(char)) { + value += char; + index += 1; + + while (index < length) { + char = this.peek(index); + if (!isDecimalDigit(char)) { + break; + } + value += char; + index += 1; + } } else { - this.left = left; - this.right = expression(p); - return this; + return null; } - }; - return x; - } - - - function application(s) { - var x = symbol(s, 42); + } - x.led = function (left) { - if (!state.option.inESNext()) { - warning("W104", state.tokens.curr, "arrow function syntax (=>)"); + if (index < length) { + char = this.peek(index); + if (isIdentifierStart(char)) { + return null; } + } - nobreaknonadjacent(state.tokens.prev, state.tokens.curr); - nonadjacent(state.tokens.curr, state.tokens.next); - - this.left = left; - this.right = doFunction(undefined, undefined, false, left); - return this; + return { + type: Token.NumericLiteral, + value: value, + base: 10, + isMalformed: !isFinite(value) }; - return x; - } - - function relation(s, f) { - var x = symbol(s, 100); + }, - x.led = function (left) { - nobreaknonadjacent(state.tokens.prev, state.tokens.curr); - nonadjacent(state.tokens.curr, state.tokens.next); - var right = expression(100); + /* + * Extract a string out of the next sequence of characters and/or + * lines or return 'null' if its not possible. Since strings can + * span across multiple lines this method has to move the char + * pointer. + * + * This method recognizes pseudo-multiline JavaScript strings: + * + * var str = "hello\ + * world"; + */ + scanStringLiteral: function (checks) { + /*jshint loopfunc:true */ + var quote = this.peek(); - if (isIdentifier(left, "NaN") || isIdentifier(right, "NaN")) { - warning("W019", this); - } else if (f) { - f.apply(this, [left, right]); - } + // String must start with a quote. + if (quote !== "\"" && quote !== "'") { + return null; + } - if (!left || !right) { - quit("E041", state.tokens.curr.line); - } + // In JSON strings must always use double quotes. + this.triggerAsync("warning", { + code: "W108", + line: this.line, + character: this.char // +1? + }, checks, function () { return state.jsonMode && quote !== "\""; }); - if (left.id === "!") { - warning("W018", left, "!"); - } + var value = ""; + var startLine = this.line; + var startChar = this.char; + var allowNewLine = false; - if (right.id === "!") { - warning("W018", right, "!"); - } + this.skip(); - this.left = left; - this.right = right; - return this; - }; - return x; - } + while (this.peek() !== quote) { + while (this.peek() === "") { // End Of Line - function isPoorRelation(node) { - return node && - ((node.type === "(number)" && +node.value === 0) || - (node.type === "(string)" && node.value === "") || - (node.type === "null" && !state.option.eqnull) || - node.type === "true" || - node.type === "false" || - node.type === "undefined"); - } + // If an EOL is not preceded by a backslash, show a warning + // and proceed like it was a legit multi-line string where + // author simply forgot to escape the newline symbol. + // + // Another approach is to implicitly close a string on EOL + // but it generates too many false positives. - function assignop(s) { - symbol(s, 20).exps = true; + if (!allowNewLine) { + this.trigger("warning", { + code: "W112", + line: this.line, + character: this.char + }); + } else { + allowNewLine = false; - return infix(s, function (left, that) { - that.left = left; + // Otherwise show a warning if multistr option was not set. + // For JSON, show warning no matter what. - if (left) { - if (predefined[left.value] === false && - scope[left.value]["(global)"] === true) { - warning("W020", left); - } else if (left["function"]) { - warning("W021", left, left.value); - } + this.triggerAsync("warning", { + code: "W043", + line: this.line, + character: this.char + }, checks, function () { return !state.option.multistr; }); - if (funct[left.value] === "const") { - error("E013", left, left.value); + this.triggerAsync("warning", { + code: "W042", + line: this.line, + character: this.char + }, checks, function () { return state.jsonMode && state.option.multistr; }); } - if (left.id === ".") { - if (!left.left) { - warning("E031", that); - } else if (left.left.value === "arguments" && !state.directive["use strict"]) { - warning("E031", that); - } + // If we get an EOF inside of an unclosed string, show an + // error and implicitly close it at the EOF point. - that.right = expression(19); - return that; - } else if (left.id === "[") { - if (state.tokens.curr.left.first) { - state.tokens.curr.left.first.forEach(function (t) { - if (funct[t.value] === "const") { - error("E013", t, t.value); - } - }); - } else if (!left.left) { - warning("E031", that); - } else if (left.left.value === "arguments" && !state.directive["use strict"]) { - warning("E031", that); - } - that.right = expression(19); - return that; - } else if (left.identifier && !isReserved(left)) { - if (funct[left.value] === "exception") { - warning("W022", left); - } - that.right = expression(19); - return that; - } + if (!this.nextLine()) { + this.trigger("error", { + code: "E029", + line: startLine, + character: startChar + }); - if (left === state.syntax["function"]) { - warning("W023", state.tokens.curr); + return { + type: Token.StringLiteral, + value: value, + isUnclosed: true, + quote: quote + }; } } - error("E031", that); - }, 20); - } - - - function bitwise(s, f, p) { - var x = symbol(s, p); - reserveName(x); - x.led = (typeof f === "function") ? f : function (left) { - if (state.option.bitwise) { - warning("W016", this, this.id); - } - this.left = left; - this.right = expression(p); - return this; - }; - return x; - } - + allowNewLine = false; + var char = this.peek(); + var jump = 1; // A length of a jump, after we're done + // parsing this character. - function bitwiseassignop(s) { - symbol(s, 20).exps = true; - return infix(s, function (left, that) { - if (state.option.bitwise) { - warning("W016", that, that.id); - } - nonadjacent(state.tokens.prev, state.tokens.curr); - nonadjacent(state.tokens.curr, state.tokens.next); - if (left) { - if (left.id === "." || left.id === "[" || - (left.identifier && !isReserved(left))) { - expression(19); - return that; - } - if (left === state.syntax["function"]) { - warning("W023", state.tokens.curr); - } - return that; + if (char < " ") { + // Warn about a control character in a string. + this.trigger("warning", { + code: "W113", + line: this.line, + character: this.char, + data: [ "" ] + }); } - error("E031", that); - }, 20); - } + // Special treatment for some escaped characters. - function suffix(s) { - var x = symbol(s, 150); + if (char === "\\") { + this.skip(); + char = this.peek(); - x.led = function (left) { - if (state.option.plusplus) { - warning("W016", this, this.id); - } else if ((!left.identifier || isReserved(left)) && left.id !== "." && left.id !== "[") { - warning("W017", this); - } + switch (char) { + case "'": + this.triggerAsync("warning", { + code: "W114", + line: this.line, + character: this.char, + data: [ "\\'" ] + }, checks, function () {return state.jsonMode; }); + break; + case "b": + char = "\b"; + break; + case "f": + char = "\f"; + break; + case "n": + char = "\n"; + break; + case "r": + char = "\r"; + break; + case "t": + char = "\t"; + break; + case "0": + char = "\0"; - this.left = left; - return this; - }; - return x; - } + // Octal literals fail in strict mode. + // Check if the number is between 00 and 07. + var n = parseInt(this.peek(1), 10); + this.triggerAsync("warning", { + code: "W115", + line: this.line, + character: this.char + }, checks, + function () { return n >= 0 && n <= 7 && state.directive["use strict"]; }); + break; + case "u": + char = String.fromCharCode(parseInt(this.input.substr(1, 4), 16)); + jump = 5; + break; + case "v": + this.triggerAsync("warning", { + code: "W114", + line: this.line, + character: this.char, + data: [ "\\v" ] + }, checks, function () { return state.jsonMode; }); - // fnparam means that this identifier is being defined as a function - // argument (see identifier()) - // prop means that this identifier is that of an object property + char = "\v"; + break; + case "x": + var x = parseInt(this.input.substr(1, 2), 16); - function optionalidentifier(fnparam, prop) { - if (!state.tokens.next.identifier) { - return; - } + this.triggerAsync("warning", { + code: "W114", + line: this.line, + character: this.char, + data: [ "\\x-" ] + }, checks, function () { return state.jsonMode; }); - advance(); + char = String.fromCharCode(x); + jump = 3; + break; + case "\\": + case "\"": + case "/": + break; + case "": + allowNewLine = true; + char = ""; + break; + case "!": + if (value.slice(value.length - 2) === "<") { + break; + } - var curr = state.tokens.curr; - var meta = curr.meta || {}; - var val = state.tokens.curr.value; + /*falls through */ + default: + // Weird escaping. + this.trigger("warning", { + code: "W044", + line: this.line, + character: this.char + }); + } + } - if (!isReserved(curr)) { - return val; + value += char; + this.skip(jump); } - if (prop) { - if (state.option.inES5() || meta.isFutureReservedWord) { - return val; + this.skip(); + return { + type: Token.StringLiteral, + value: value, + isUnclosed: false, + quote: quote + }; + }, + + /* + * Extract a regular expression out of the next sequence of + * characters and/or lines or return 'null' if its not possible. + * + * This method is platform dependent: it accepts almost any + * regular expression values but then tries to compile and run + * them using system's RegExp object. This means that there are + * rare edge cases where one JavaScript engine complains about + * your regular expression while others don't. + */ + scanRegExp: function () { + var index = 0; + var length = this.input.length; + var char = this.peek(); + var value = char; + var body = ""; + var flags = []; + var malformed = false; + var isCharSet = false; + var terminated; + + var scanUnexpectedChars = function () { + // Unexpected control character + if (char < " ") { + malformed = true; + this.trigger("warning", { + code: "W048", + line: this.line, + character: this.char + }); } - } - if (fnparam && val === "undefined") { - return val; - } + // Unexpected escaped character + if (char === "<") { + malformed = true; + this.trigger("warning", { + code: "W049", + line: this.line, + character: this.char, + data: [ char ] + }); + } + }.bind(this); - // Display an info message about reserved words as properties - // and ES5 but do it only once. - if (prop && !api.getCache("displayed:I002")) { - api.setCache("displayed:I002", true); - warning("I002"); + // Regular expressions must start with '/' + if (!this.prereg || char !== "/") { + return null; } - warning("W024", state.tokens.curr, state.tokens.curr.id); - return val; - } + index += 1; + terminated = false; - // fnparam means that this identifier is being defined as a function - // argument - // prop means that this identifier is that of an object property - function identifier(fnparam, prop) { - var i = optionalidentifier(fnparam, prop); - if (i) { - return i; - } - if (state.tokens.curr.id === "function" && state.tokens.next.id === "(") { - warning("W025"); - } else { - error("E030", state.tokens.next, state.tokens.next.value); - } - } + // Try to get everything in between slashes. A couple of + // cases aside (see scanUnexpectedChars) we don't really + // care whether the resulting expression is valid or not. + // We will check that later using the RegExp object. + while (index < length) { + char = this.peek(index); + value += char; + body += char; - function reachable(s) { - var i = 0, t; - if (state.tokens.next.id !== ";" || noreach) { - return; - } - for (;;) { - t = peek(i); - if (t.reach) { - return; - } - if (t.id !== "(endline)") { - if (t.id === "function") { - if (!state.option.latedef) { - break; + if (isCharSet) { + if (char === "]") { + if (this.peek(index - 1) !== "\\" || this.peek(index - 2) === "\\") { + isCharSet = false; } - - warning("W026", t); - break; } - warning("W027", t, t.value, s); - break; - } - i += 1; - } - } - + if (char === "\\") { + index += 1; + char = this.peek(index); + body += char; + value += char; - function statement(noindent) { - var values; - var i = indent, r, s = scope, t = state.tokens.next; + scanUnexpectedChars(); + } - if (t.id === ";") { - advance(";"); - return; - } + index += 1; + continue; + } - // Is this a labelled statement? - var res = isReserved(t); + if (char === "\\") { + index += 1; + char = this.peek(index); + body += char; + value += char; - // We're being more tolerant here: if someone uses - // a FutureReservedWord as a label, we warn but proceed - // anyway. + scanUnexpectedChars(); - if (res && t.meta && t.meta.isFutureReservedWord && peek().id === ":") { - warning("W024", t, t.id); - res = false; - } + if (char === "/") { + index += 1; + continue; + } - // detect a destructuring assignment - if (_.has(["[", "{"], t.value)) { - if (lookupBlockType().isDestAssign) { - if (!state.option.inESNext()) { - warning("W104", state.tokens.curr, "destructuring expression"); + if (char === "[") { + index += 1; + continue; } - values = destructuringExpression(); - values.forEach(function (tok) { - isundef(funct, "W117", tok.token, tok.id); - }); - advance("="); - destructuringExpressionMatch(values, expression(5, true)); - advance(";"); - return; } - } - if (t.identifier && !res && peek().id === ":") { - advance(); - advance(":"); - scope = Object.create(s); - addlabel(t.value, "label"); - if (!state.tokens.next.labelled && state.tokens.next.value !== "{") { - warning("W028", state.tokens.next, t.value, state.tokens.next.value); + if (char === "[") { + isCharSet = true; + index += 1; + continue; } - state.tokens.next.label = t.value; - t = state.tokens.next; - } - - // Is it a lonely block? + if (char === "/") { + body = body.substr(0, body.length - 1); + terminated = true; + index += 1; + break; + } - if (t.id === "{") { - block(true, true); - return; + index += 1; } - // Parse the statement. + // A regular expression that was never closed is an + // error from which we cannot recover. - if (!noindent) { - indentation(); - } - r = expression(0, true); + if (!terminated) { + this.trigger("error", { + code: "E015", + line: this.line, + character: this.from + }); - // Look for the final semicolon. + return void this.trigger("fatal", { + line: this.line, + from: this.from + }); + } - if (!t.block) { - if (!state.option.expr && (!r || !r.exps)) { - warning("W030", state.tokens.curr); - } else if (state.option.nonew && r && r.left && r.id === "(" && r.left.id === "new") { - warning("W031", t); - } + // Parse flags (if any). - if (state.tokens.next.id !== ";") { - if (!state.option.asi) { - // If this is the last statement in a block that ends on - // the same line *and* option lastsemic is on, ignore the warning. - // Otherwise, complain about missing semicolon. - if (!state.option.lastsemic || state.tokens.next.id !== "}" || - state.tokens.next.line !== state.tokens.curr.line) { - warningAt("W033", state.tokens.curr.line, state.tokens.curr.character); - } - } - } else { - adjacent(state.tokens.curr, state.tokens.next); - advance(";"); - nonadjacent(state.tokens.curr, state.tokens.next); + while (index < length) { + char = this.peek(index); + if (!/[gim]/.test(char)) { + break; } + flags.push(char); + value += char; + index += 1; } - // Restore the indentation. - - indent = i; - scope = s; - return r; - } - + // Check regular expression for correctness. - function statements(startLine) { - var a = [], p; + try { + new RegExp(body, flags.join("")); + } catch (err) { + malformed = true; + this.trigger("error", { + code: "E016", + line: this.line, + character: this.char, + data: [ err.message ] // Platform dependent! + }); + } - while (!state.tokens.next.reach && state.tokens.next.id !== "(end)") { - if (state.tokens.next.id === ";") { - p = peek(); + return { + type: Token.RegExp, + value: value, + flags: flags, + isMalformed: malformed + }; + }, - if (!p || (p.id !== "(" && p.id !== "[")) { - warning("W032"); - } + /* + * Scan for any occurence of mixed tabs and spaces. If smarttabs option + * is on, ignore tabs followed by spaces. + * + * Tabs followed by one space followed by a block comment are allowed. + */ + scanMixedSpacesAndTabs: function () { + var at, match; - advance(";"); - } else { - a.push(statement(startLine === state.tokens.next.line)); - } + if (state.option.smarttabs) { + // Negative look-behind for "//" + match = this.input.match(/(\/\/|^\s?\*)? \t/); + at = match && !match[1] ? 0 : -1; + } else { + at = this.input.search(/ \t|\t [^\*]/); } - return a; - } + return at; + }, /* - * read all directives - * recognizes a simple form of asi, but always - * warns, if it is used + * Scan for characters that get silently deleted by one or more browsers. */ - function directives() { - var i, p, pn; + scanUnsafeChars: function () { + return this.input.search(reg.unsafeChars); + }, - for (;;) { - if (state.tokens.next.id === "(string)") { - p = peek(0); - if (p.id === "(endline)") { - i = 1; - do { - pn = peek(i); - i = i + 1; - } while (pn.id === "(endline)"); + /* + * Produce the next raw token or return 'null' if no tokens can be matched. + * This method skips over all space characters. + */ + next: function (checks) { + this.from = this.char; - if (pn.id !== ";") { - if (pn.id !== "(string)" && pn.id !== "(number)" && - pn.id !== "(regexp)" && pn.identifier !== true && - pn.id !== "}") { - break; - } - warning("W033", state.tokens.next); - } else { - p = pn; - } - } else if (p.id === "}") { - // Directive with no other statements, warn about missing semicolon - warning("W033", p); - } else if (p.id !== ";") { - break; - } + // Move to the next non-space character. + var start; + if (/\s/.test(this.peek())) { + start = this.char; - indentation(); - advance(); - if (state.directive[state.tokens.curr.value]) { - warning("W034", state.tokens.curr, state.tokens.curr.value); - } + while (/\s/.test(this.peek())) { + this.from += 1; + this.skip(); + } - if (state.tokens.curr.value === "use strict") { - if (!state.option["(explicitNewcap)"]) - state.option.newcap = true; - state.option.undef = true; + if (this.peek() === "") { // EOL + if (!/^\s*$/.test(this.getLines()[this.line - 1]) && state.option.trailing) { + this.trigger("warning", { code: "W102", line: this.line, character: start }); } + } + } - // there's no directive negation, so always set to true - state.directive[state.tokens.curr.value] = true; + // Methods that work with multi-line structures and move the + // character pointer. - if (p.id === ";") { - advance(";"); - } - continue; - } - break; + var match = this.scanComments() || + this.scanStringLiteral(checks); + + if (match) { + return match; + } + + // Methods that don't move the character pointer. + + match = + this.scanRegExp() || + this.scanPunctuator() || + this.scanKeyword() || + this.scanIdentifier() || + this.scanNumericLiteral(); + + if (match) { + this.skip(match.value.length); + return match; } - } + // No token could be matched, give up. + + return null; + }, /* - * Parses a single block. A block is a sequence of statements wrapped in - * braces. - * - * ordinary - true for everything but function bodies and try blocks. - * stmt - true if block can be a single statement (e.g. in if/for/while). - * isfunc - true if block is a function body + * Switch to the next line and reset all char pointers. Once + * switched, this method also checks for mixed spaces and tabs + * and other minor warnings. */ - function block(ordinary, stmt, isfunc, isfatarrow) { - var a, - b = inblock, - old_indent = indent, - m, - s = scope, - t, - line, - d; + nextLine: function () { + var char; - inblock = ordinary; + if (this.line >= this.getLines().length) { + return false; + } - if (!ordinary || !state.option.funcscope) - scope = Object.create(scope); + this.input = this.getLines()[this.line]; + this.line += 1; + this.char = 1; + this.from = 1; - nonadjacent(state.tokens.curr, state.tokens.next); - t = state.tokens.next; + char = this.scanMixedSpacesAndTabs(); + if (char >= 0) { + this.trigger("warning", { code: "W099", line: this.line, character: char + 1 }); + } - var metrics = funct["(metrics)"]; - metrics.nestedBlockDepth += 1; - metrics.verifyMaxNestedBlockDepthPerFunction(); + this.input = this.input.replace(/\t/g, state.tab); + char = this.scanUnsafeChars(); - if (state.tokens.next.id === "{") { - advance("{"); + if (char >= 0) { + this.trigger("warning", { code: "W100", line: this.line, character: char }); + } - // create a new block scope - funct["(blockscope)"].stack(); - - line = state.tokens.curr.line; - if (state.tokens.next.id !== "}") { - indent += state.option.indent; - while (!ordinary && state.tokens.next.from > indent) { - indent += state.option.indent; - } + // If there is a limit on line length, warn when lines get too + // long. - if (isfunc) { - m = {}; - for (d in state.directive) { - if (_.has(state.directive, d)) { - m[d] = state.directive[d]; - } - } - directives(); + if (state.option.maxlen && state.option.maxlen < this.input.length) { + this.trigger("warning", { code: "W101", line: this.line, character: this.input.length }); + } - if (state.option.strict && funct["(context)"]["(global)"]) { - if (!m["use strict"] && !state.directive["use strict"]) { - warning("E007"); - } - } - } + return true; + }, - a = statements(line); + /* + * This is simply a synonym for nextLine() method with a friendlier + * public name. + */ + start: function () { + this.nextLine(); + }, - metrics.statementCount += a.length; + /* + * Produce the next token. This function is called by advance() to get + * the next token. It retuns a token in a JSLint-compatible format. + */ + token: function () { + /*jshint loopfunc:true */ + var checks = asyncTrigger(); + var token; - if (isfunc) { - state.directive = m; - } - indent -= state.option.indent; - if (line !== state.tokens.next.line) { - indentation(); - } - } else if (line !== state.tokens.next.line) { - indentation(); + function isReserved(token, isProperty) { + if (!token.reserved) { + return false; } - advance("}", t); - - funct["(blockscope)"].unstack(); + var meta = token.meta; - indent = old_indent; - } else if (!ordinary) { - if (isfunc) { - m = {}; - if (stmt && !isfatarrow && !state.option.inMoz(true)) { - error("W118", state.tokens.curr, "function closure expressions"); + if (meta && meta.isFutureReservedWord && state.option.inES5()) { + // ES3 FutureReservedWord in an ES5 environment. + if (!meta.es5) { + return false; } - if (!stmt) { - for (d in state.directive) { - if (_.has(state.directive, d)) { - m[d] = state.directive[d]; - } + // Some ES5 FutureReservedWord identifiers are active only + // within a strict mode environment. + if (meta.strictOnly) { + if (!state.option.strict && !state.directive["use strict"]) { + return false; } } - expression(5); - if (state.option.strict && funct["(context)"]["(global)"]) { - if (!m["use strict"] && !state.directive["use strict"]) { - warning("E007"); - } + if (isProperty) { + return false; } - } else { - error("E021", state.tokens.next, "{", state.tokens.next.value); } - } else { - // check to avoid let declaration not within a block - funct["(nolet)"] = true; + return true; + } - if (!stmt || state.option.curly) { - warning("W116", state.tokens.next, "{", state.tokens.next.value); + // Produce a token object. + var create = function (type, value, isProperty) { + /*jshint validthis:true */ + var obj; + + if (type !== "(endline)" && type !== "(end)") { + this.prereg = false; } - noreach = true; - indent += state.option.indent; - // test indentation only if statement is in new line - a = [statement(state.tokens.next.line === state.tokens.curr.line)]; - indent -= state.option.indent; - noreach = false; + if (type === "(punctuator)") { + switch (value) { + case ".": + case ")": + case "~": + case "#": + case "]": + this.prereg = false; + break; + default: + this.prereg = true; + } - delete funct["(nolet)"]; - } - funct["(verb)"] = null; - if (!ordinary || !state.option.funcscope) scope = s; - inblock = b; - if (ordinary && state.option.noempty && (!a || a.length === 0)) { - warning("W035"); - } - metrics.nestedBlockDepth -= 1; - return a; - } + obj = Object.create(state.syntax[value] || state.syntax["(error)"]); + } + if (type === "(identifier)") { + if (value === "return" || value === "case" || value === "typeof") { + this.prereg = true; + } - function countMember(m) { - if (membersOnly && typeof membersOnly[m] !== "boolean") { - warning("W036", state.tokens.curr, m); - } - if (typeof member[m] === "number") { - member[m] += 1; - } else { - member[m] = 1; - } - } + if (_.has(state.syntax, value)) { + obj = Object.create(state.syntax[value] || state.syntax["(error)"]); + // If this can't be a reserved keyword, reset the object. + if (!isReserved(obj, isProperty && type === "(identifier)")) { + obj = null; + } + } + } - function note_implied(tkn) { - var name = tkn.value, line = tkn.line, a = implied[name]; - if (typeof a === "function") { - a = false; - } + if (!obj) { + obj = Object.create(state.syntax[type]); + } - if (!a) { - a = [line]; - implied[name] = a; - } else if (a[a.length - 1] !== line) { - a.push(line); - } - } + obj.identifier = (type === "(identifier)"); + obj.type = obj.type || type; + obj.value = value; + obj.line = this.line; + obj.character = this.char; + obj.from = this.from; + if (isProperty && obj.identifier) { + obj.isProperty = isProperty; + } - // Build the syntax table by declaring the syntactic elements of the language. + obj.check = checks.check; - type("(number)", function () { - return this; - }); + return obj; + }.bind(this); - type("(string)", function () { - return this; - }); + for (;;) { + if (!this.input.length) { + return create(this.nextLine() ? "(endline)" : "(end)", ""); + } - state.syntax["(identifier)"] = { - type: "(identifier)", - lbp: 0, - identifier: true, - nud: function () { - var v = this.value, - s = scope[v], - f; + token = this.next(checks); - if (typeof s === "function") { - // Protection against accidental inheritance. - s = undefined; - } else if (typeof s === "boolean") { - f = funct; - funct = functions[0]; - addlabel(v, "var"); - s = funct; - funct = f; - } - var block; - if (_.has(funct, "(blockscope)")) { - block = funct["(blockscope)"].getlabel(v); - } + if (!token) { + if (this.input.length) { + // Unexpected character. + this.trigger("error", { + code: "E024", + line: this.line, + character: this.char, + data: [ this.peek() ] + }); - // The name is in scope and defined in the current function. - if (funct === s || block) { - // Change 'unused' to 'var', and reject labels. - // the name is in a block scope - switch (block ? block[v]["(type)"] : funct[v]) { - case "unused": - if (block) block[v]["(type)"] = "var"; - else funct[v] = "var"; - break; - case "unction": - if (block) block[v]["(type)"] = "function"; - else funct[v] = "function"; - this["function"] = true; - break; - case "function": - this["function"] = true; - break; - case "label": - warning("W037", state.tokens.curr, v); - break; + this.input = ""; } - } else if (funct["(global)"]) { - // The name is not defined in the function. If we are in the global - // scope, then we have an undefined variable. - // - // Operators typeof and delete do not raise runtime errors even if - // the base object of a reference is null so no need to display warning - // if we're inside of typeof or delete. - - if (typeof predefined[v] !== "boolean") { - // Attempting to subscript a null reference will throw an - // error, even within the typeof and delete operators - if (!(anonname === "typeof" || anonname === "delete") || - (state.tokens.next && (state.tokens.next.value === "." || - state.tokens.next.value === "["))) { - // if we're in a list comprehension, variables are declared - // locally and used before being defined. So we check - // the presence of the given variable in the comp array - // before declaring it undefined. + continue; + } - if (!funct["(comparray)"].check(v)) { - isundef(funct, "W117", state.tokens.curr, v); - } - } - } + switch (token.type) { + case Token.StringLiteral: + this.triggerAsync("String", { + line: this.line, + char: this.char, + from: this.from, + value: token.value, + quote: token.quote + }, checks, function () { return true; }); - note_implied(state.tokens.curr); - } else { - // If the name is already defined in the current - // function, but not as outer, then there is a scope error. + return create("(string)", token.value); + case Token.Identifier: + this.trigger("Identifier", { + line: this.line, + char: this.char, + from: this.form, + name: token.value, + isProperty: state.tokens.curr.id === "." + }); - switch (funct[v]) { - case "closure": - case "function": - case "var": - case "unused": - warning("W038", state.tokens.curr, v); - break; - case "label": - warning("W037", state.tokens.curr, v); - break; - case "outer": - case "global": - break; - default: - // If the name is defined in an outer function, make an outer entry, - // and if it was unused, make it var. - if (s === true) { - funct[v] = true; - } else if (s === null) { - warning("W039", state.tokens.curr, v); - note_implied(state.tokens.curr); - } else if (typeof s !== "object") { - // Operators typeof and delete do not raise runtime errors even - // if the base object of a reference is null so no need to - // - // display warning if we're inside of typeof or delete. - // Attempting to subscript a null reference will throw an - // error, even within the typeof and delete operators - if (!(anonname === "typeof" || anonname === "delete") || - (state.tokens.next && - (state.tokens.next.value === "." || state.tokens.next.value === "["))) { + /* falls through */ + case Token.Keyword: + case Token.NullLiteral: + case Token.BooleanLiteral: + return create("(identifier)", token.value, state.tokens.curr.id === "."); - isundef(funct, "W117", state.tokens.curr, v); - } - funct[v] = true; - note_implied(state.tokens.curr); - } else { - switch (s[v]) { - case "function": - case "unction": - this["function"] = true; - s[v] = "closure"; - funct[v] = s["(global)"] ? "global" : "outer"; - break; - case "var": - case "unused": - s[v] = "closure"; - funct[v] = s["(global)"] ? "global" : "outer"; - break; - case "closure": - funct[v] = s["(global)"] ? "global" : "outer"; - break; - case "label": - warning("W037", state.tokens.curr, v); - } - } + case Token.NumericLiteral: + if (token.isMalformed) { + this.trigger("warning", { + code: "W045", + line: this.line, + character: this.char, + data: [ token.value ] + }); } - } - return this; - }, - led: function () { - error("E033", state.tokens.next, state.tokens.next.value); - } - }; - type("(regexp)", function () { - return this; - }); + this.triggerAsync("warning", { + code: "W114", + line: this.line, + character: this.char, + data: [ "0x-" ] + }, checks, function () { return token.base === 16 && state.jsonMode; }); - // ECMAScript parser + this.triggerAsync("warning", { + code: "W115", + line: this.line, + character: this.char + }, checks, function () { + return state.directive["use strict"] && token.base === 8; + }); - delim("(endline)"); - delim("(begin)"); - delim("(end)").reach = true; - delim("(error)").reach = true; - delim("}").reach = true; - delim(")"); - delim("]"); - delim("\"").reach = true; - delim("'").reach = true; - delim(";"); - delim(":").reach = true; - delim("#"); + this.trigger("Number", { + line: this.line, + char: this.char, + from: this.from, + value: token.value, + base: token.base, + isMalformed: token.malformed + }); - reserve("else"); - reserve("case").reach = true; - reserve("catch"); - reserve("default").reach = true; - reserve("finally"); - reservevar("arguments", function (x) { - if (state.directive["use strict"] && funct["(global)"]) { - warning("E008", x); - } - }); - reservevar("eval"); - reservevar("false"); - reservevar("Infinity"); - reservevar("null"); - reservevar("this", function (x) { - if (state.directive["use strict"] && !state.option.validthis && ((funct["(statement)"] && - funct["(name)"].charAt(0) > "Z") || funct["(global)"])) { - warning("W040", x); - } - }); - reservevar("true"); - reservevar("undefined"); + return create("(number)", token.value); - assignop("=", "assign", 20); - assignop("+=", "assignadd", 20); - assignop("-=", "assignsub", 20); - assignop("*=", "assignmult", 20); - assignop("/=", "assigndiv", 20).nud = function () { - error("E014"); - }; - assignop("%=", "assignmod", 20); + case Token.RegExp: + return create("(regexp)", token.value); + + case Token.Comment: + state.tokens.curr.comment = true; + + if (token.isSpecial) { + return { + value: token.value, + body: token.body, + type: token.commentType, + isSpecial: token.isSpecial, + line: this.line, + character: this.char, + from: this.from + }; + } - bitwiseassignop("&=", "assignbitand", 20); - bitwiseassignop("|=", "assignbitor", 20); - bitwiseassignop("^=", "assignbitxor", 20); - bitwiseassignop("<<=", "assignshiftleft", 20); - bitwiseassignop(">>=", "assignshiftright", 20); - bitwiseassignop(">>>=", "assignshiftrightunsigned", 20); - infix(",", function (left, that) { - var expr; - that.exprs = [left]; - if (!comma({peek: true})) { - return that; - } - while (true) { - if (!(expr = expression(5))) { break; - } - that.exprs.push(expr); - if (state.tokens.next.value !== "," || !comma()) { + + case "": break; + + default: + return create("(punctuator)", token.value); } } - return that; - }, 5); - infix("?", function (left, that) { - that.left = left; - that.right = expression(10); - advance(":"); - that["else"] = expression(10); - return that; - }, 30); + } +}; - infix("||", "or", 40); - infix("&&", "and", 50); - bitwise("|", "bitor", 70); - bitwise("^", "bitxor", 80); - bitwise("&", "bitand", 90); - relation("==", function (left, right) { - var eqnull = state.option.eqnull && (left.value === "null" || right.value === "null"); +exports.Lexer = Lexer; - if (!eqnull && state.option.eqeqeq) - warning("W116", this, "===", "=="); - else if (isPoorRelation(left)) - warning("W041", this, "===", left.value); - else if (isPoorRelation(right)) - warning("W041", this, "===", right.value); +})() +},{"events":2,"./reg.js":4,"./state.js":5,"underscore":8}],10:[function(require,module,exports){ +(function(global){/*global window, global*/ +var util = require("util") +var assert = require("assert") - return this; - }); - relation("==="); - relation("!=", function (left, right) { - var eqnull = state.option.eqnull && - (left.value === "null" || right.value === "null"); +var slice = Array.prototype.slice +var console +var times = {} - if (!eqnull && state.option.eqeqeq) { - warning("W116", this, "!==", "!="); - } else if (isPoorRelation(left)) { - warning("W041", this, "!==", left.value); - } else if (isPoorRelation(right)) { - warning("W041", this, "!==", right.value); - } - return this; - }); - relation("!=="); - relation("<"); - relation(">"); - relation("<="); - relation(">="); - bitwise("<<", "shiftleft", 120); - bitwise(">>", "shiftright", 120); - bitwise(">>>", "shiftrightunsigned", 120); - infix("in", "in", 120); - infix("instanceof", "instanceof", 120); - infix("+", function (left, that) { - var right = expression(130); - if (left && right && left.id === "(string)" && right.id === "(string)") { - left.value += right.value; - left.character = right.character; - if (!state.option.scripturl && reg.javascriptURL.test(left.value)) { - warning("W050", left); - } - return left; - } - that.left = left; - that.right = right; - return that; - }, 130); - prefix("+", "num"); - prefix("+++", function () { - warning("W007"); - this.right = expression(150); - this.arity = "unary"; - return this; - }); - infix("+++", function (left) { - warning("W007"); - this.left = left; - this.right = expression(130); - return this; - }, 130); - infix("-", "sub", 130); - prefix("-", "neg"); - prefix("---", function () { - warning("W006"); - this.right = expression(150); - this.arity = "unary"; - return this; - }); - infix("---", function (left) { - warning("W006"); - this.left = left; - this.right = expression(130); - return this; - }, 130); - infix("*", "mult", 140); - infix("/", "div", 140); - infix("%", "mod", 140); +if (typeof global !== "undefined" && global.console) { + console = global.console +} else if (typeof window !== "undefined" && window.console) { + console = window.console +} else { + console = window.console = {} +} - suffix("++", "postinc"); - prefix("++", "preinc"); - state.syntax["++"].exps = true; +var functions = [ + [log, "log"] + , [info, "info"] + , [warn, "warn"] + , [error, "error"] + , [time, "time"] + , [timeEnd, "timeEnd"] + , [trace, "trace"] + , [dir, "dir"] + , [assert, "assert"] +] - suffix("--", "postdec"); - prefix("--", "predec"); - state.syntax["--"].exps = true; - prefix("delete", function () { - var p = expression(5); - if (!p || (p.id !== "." && p.id !== "[")) { - warning("W051"); - } - this.first = p; - return this; - }).exps = true; +for (var i = 0; i < functions.length; i++) { + var tuple = functions[i] + var f = tuple[0] + var name = tuple[1] - prefix("~", function () { - if (state.option.bitwise) { - warning("W052", this, "~"); - } - expression(150); - return this; - }); + if (!console[name]) { + console[name] = f + } +} - prefix("...", function () { - if (!state.option.inESNext()) { - warning("W104", this, "spread/rest operator"); - } - if (!state.tokens.next.identifier) { - error("E030", state.tokens.next, state.tokens.next.value); - } - expression(150); - return this; - }); +module.exports = console - prefix("!", function () { - this.right = expression(150); - this.arity = "unary"; +function log() {} - if (!this.right) { // '!' followed by nothing? Give up. - quit("E041", this.line || 0); - } +function info() { + console.log.apply(console, arguments) +} - if (bang[this.right.id] === true) { - warning("W018", this, "!"); - } - return this; - }); +function warn() { + console.log.apply(console, arguments) +} - prefix("typeof", "typeof"); - prefix("new", function () { - var c = expression(155), i; - if (c && c.id !== "function") { - if (c.identifier) { - c["new"] = true; - switch (c.value) { - case "Number": - case "String": - case "Boolean": - case "Math": - case "JSON": - warning("W053", state.tokens.prev, c.value); - break; - case "Function": - if (!state.option.evil) { - warning("W054"); - } - break; - case "Date": - case "RegExp": - break; - default: - if (c.id !== "function") { - i = c.value.substr(0, 1); - if (state.option.newcap && (i < "A" || i > "Z") && !_.has(global, c.value)) { - warning("W055", state.tokens.curr); - } - } - } - } else { - if (c.id !== "." && c.id !== "[" && c.id !== "(") { - warning("W056", state.tokens.curr); - } - } - } else { - if (!state.option.supernew) - warning("W057", this); - } - adjacent(state.tokens.curr, state.tokens.next); - if (state.tokens.next.id !== "(" && !state.option.supernew) { - warning("W058", state.tokens.curr, state.tokens.curr.value); - } - this.first = c; - return this; - }); - state.syntax["new"].exps = true; +function error() { + console.warn.apply(console, arguments) +} - prefix("void").exps = true; +function time(label) { + times[label] = Date.now() +} - infix(".", function (left, that) { - adjacent(state.tokens.prev, state.tokens.curr); - nobreak(); - var m = identifier(false, true); +function timeEnd(label) { + var time = times[label] + if (!time) { + throw new Error("No such label: " + label) + } - if (typeof m === "string") { - countMember(m); - } + var duration = Date.now() - time + console.log(label + ": " + duration + "ms") +} - that.left = left; - that.right = m; +function trace() { + var err = new Error() + err.name = "Trace" + err.message = util.format.apply(null, arguments) + console.error(err.stack) +} - if (m && m === "hasOwnProperty" && state.tokens.next.value === "=") { - warning("W001"); - } +function dir(object) { + console.log(util.inspect(object) + "\n") +} - if (left && left.value === "arguments" && (m === "callee" || m === "caller")) { - if (state.option.noarg) - warning("W059", left, m); - else if (state.directive["use strict"]) - error("E008"); - } else if (!state.option.evil && left && left.value === "document" && - (m === "write" || m === "writeln")) { - warning("W060", left); - } +function assert(expression) { + if (!expression) { + var arr = slice.call(arguments, 1) + assert.ok(false, util.format.apply(null, arr)) + } +} - if (!state.option.evil && (m === "eval" || m === "execScript")) { - warning("W061"); - } +})(window) +},{"util":11,"assert":12}],"jshint":[function(require,module,exports){ +module.exports=require('PeVhMp'); +},{}],"PeVhMp":[function(require,module,exports){ +(function(){/*! + * JSHint, by JSHint Community. + * + * This file (and this file only) is licensed under the same slightly modified + * MIT license that JSLint is. It stops evil-doers everywhere: + * + * Copyright (c) 2002 Douglas Crockford (www.JSLint.com) + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * The Software shall be used for Good, not Evil. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + */ - return that; - }, 160, true); +/*jshint quotmark:double */ +/*global console:true */ +/*exported console */ - infix("(", function (left, that) { - if (state.tokens.prev.id !== "}" && state.tokens.prev.id !== ")") { - nobreak(state.tokens.prev, state.tokens.curr); - } +var _ = require("underscore"); +var events = require("events"); +var vars = require("./vars.js"); +var messages = require("./messages.js"); +var Lexer = require("./lex.js").Lexer; +var reg = require("./reg.js"); +var state = require("./state.js").state; +var style = require("./style.js"); - nospace(); - if (state.option.immed && left && !left.immed && left.id === "function") { - warning("W062"); - } +// We need this module here because environments such as IE and Rhino +// don't necessarilly expose the 'console' API and browserify uses +// it to log things. It's a sad state of affair, really. +var console = require("console-browserify"); - var n = 0; - var p = []; +// We build the application inside a function so that we produce only a singleton +// variable. That function will be invoked immediately, and its return value is +// the JSHINT function itself. - if (left) { - if (left.type === "(identifier)") { - if (left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)) { - if ("Number String Boolean Date Object".indexOf(left.value) === -1) { - if (left.value === "Math") { - warning("W063", left); - } else if (state.option.newcap) { - warning("W064", left); - } - } - } - } - } +var JSHINT = (function () { + "use strict"; - if (state.tokens.next.id !== ")") { - for (;;) { - p[p.length] = expression(10); - n += 1; - if (state.tokens.next.id !== ",") { - break; - } - comma(); - } - } + var anonname, // The guessed name for anonymous functions. + api, // Extension API - advance(")"); - nospace(state.tokens.prev, state.tokens.curr); + // These are operators that should not be used with the ! operator. + bang = { + "<" : true, + "<=" : true, + "==" : true, + "===": true, + "!==": true, + "!=" : true, + ">" : true, + ">=" : true, + "+" : true, + "-" : true, + "*" : true, + "/" : true, + "%" : true + }, - if (typeof left === "object") { - if (left.value === "parseInt" && n === 1) { - warning("W065", state.tokens.curr); - } - if (!state.option.evil) { - if (left.value === "eval" || left.value === "Function" || - left.value === "execScript") { - warning("W061", left); + // These are the JSHint boolean options. + boolOptions = { + asi : true, // if automatic semicolon insertion should be tolerated + bitwise : true, // if bitwise operators should not be allowed + boss : true, // if advanced usage of assignments should be allowed + browser : true, // if the standard browser globals should be predefined + camelcase : true, // if identifiers should be required in camel case + couch : true, // if CouchDB globals should be predefined + curly : true, // if curly braces around all blocks should be required + debug : true, // if debugger statements should be allowed + devel : true, // if logging globals should be predefined (console, alert, etc.) + dojo : true, // if Dojo Toolkit globals should be predefined + eqeqeq : true, // if === should be required + eqnull : true, // if == null comparisons should be tolerated + es3 : true, // if ES3 syntax should be allowed + es5 : true, // if ES5 syntax should be allowed (is now set per default) + esnext : true, // if es.next specific syntax should be allowed + moz : true, // if mozilla specific syntax should be allowed + evil : true, // if eval should be allowed + expr : true, // if ExpressionStatement should be allowed as Programs + forin : true, // if for in statements must filter + funcscope : true, // if only function scope should be used for scope tests + gcl : true, // if JSHint should be compatible with Google Closure Linter + globalstrict: true, // if global "use strict"; should be allowed (also enables 'strict') + immed : true, // if immediate invocations must be wrapped in parens + iterator : true, // if the `__iterator__` property should be allowed + jquery : true, // if jQuery globals should be predefined + lastsemic : true, // if semicolons may be ommitted for the trailing + // statements inside of a one-line blocks. + laxbreak : true, // if line breaks should not be checked + laxcomma : true, // if line breaks should not be checked around commas + loopfunc : true, // if functions should be allowed to be defined within + // loops + mootools : true, // if MooTools globals should be predefined + multistr : true, // allow multiline strings + newcap : true, // if constructor names must be capitalized + noarg : true, // if arguments.caller and arguments.callee should be + // disallowed + node : true, // if the Node.js environment globals should be + // predefined + noempty : true, // if empty blocks should be disallowed + nonew : true, // if using `new` for side-effects should be disallowed + nonstandard : true, // if non-standard (but widely adopted) globals should + // be predefined + nomen : true, // if names should be checked + onevar : true, // if only one var statement per function should be + // allowed + passfail : true, // if the scan should stop on first error + phantom : true, // if PhantomJS symbols should be allowed + plusplus : true, // if increment/decrement should not be allowed + proto : true, // if the `__proto__` property should be allowed + prototypejs : true, // if Prototype and Scriptaculous globals should be + // predefined + rhino : true, // if the Rhino environment globals should be predefined + shelljs : true, // if ShellJS globals should be predefined + typed : true, // if typed array globals should be predefined + undef : true, // if variables should be declared before used + scripturl : true, // if script-targeted URLs should be tolerated + shadow : true, // if variable shadowing should be tolerated + smarttabs : true, // if smarttabs should be tolerated + // (http://www.emacswiki.org/emacs/SmartTabs) + strict : true, // require the "use strict"; pragma + sub : true, // if all forms of subscript notation are tolerated + supernew : true, // if `new function () { ... };` and `new Object;` + // should be tolerated + trailing : true, // if trailing whitespace rules apply + validthis : true, // if 'this' inside a non-constructor function is valid. + // This is a function scoped option only. + withstmt : true, // if with statements should be allowed + white : true, // if strict whitespace rules apply + worker : true, // if Web Worker script symbols should be allowed + wsh : true, // if the Windows Scripting Host environment globals + // should be predefined + yui : true, // YUI variables should be predefined - if (p[0] && [0].id === "(string)") { - addInternalSrc(left, p[0].value); - } - } else if (p[0] && p[0].id === "(string)" && - (left.value === "setTimeout" || - left.value === "setInterval")) { - warning("W066", left); - addInternalSrc(left, p[0].value); + // Obsolete options + onecase : true, // if one case switch statements should be allowed + regexp : true, // if the . should not be allowed in regexp literals + regexdash : true // if unescaped first/last dash (-) inside brackets + // should be tolerated + }, - // window.setTimeout/setInterval - } else if (p[0] && p[0].id === "(string)" && - left.value === "." && - left.left.value === "window" && - (left.right === "setTimeout" || - left.right === "setInterval")) { - warning("W066", left); - addInternalSrc(left, p[0].value); - } - } - if (!left.identifier && left.id !== "." && left.id !== "[" && - left.id !== "(" && left.id !== "&&" && left.id !== "||" && - left.id !== "?") { - warning("W067", left); - } - } + // These are the JSHint options that can take any value + // (we use this object to detect invalid options) + valOptions = { + maxlen : false, + indent : false, + maxerr : false, + predef : false, + quotmark : false, //'single'|'double'|true + scope : false, + maxstatements: false, // {int} max statements per function + maxdepth : false, // {int} max nested block depth per function + maxparams : false, // {int} max params per function + maxcomplexity: false, // {int} max cyclomatic complexity per function + unused : true, // warn if variables are unused. Available options: + // false - don't check for unused variables + // true - "vars" + check last function param + // "vars" - skip checking unused function params + // "strict" - "vars" + check all function params + latedef : false // warn if the variable is used before its definition + // false - don't emit any warnings + // true - warn if any variable is used before its definition + // "nofunc" - warn for any variable but function declarations + }, - that.left = left; - return that; - }, 155, true).exps = true; + // These are JSHint boolean options which are shared with JSLint + // where the definition in JSHint is opposite JSLint + invertedOptions = { + bitwise : true, + forin : true, + newcap : true, + nomen : true, + plusplus: true, + regexp : true, + undef : true, + white : true, - prefix("(", function () { - nospace(); - var bracket, brackets = []; - var pn, pn1, i = 0; + // Inverted and renamed, use JSHint name here + eqeqeq : true, + onevar : true, + strict : true + }, - do { - pn = peek(i); - i += 1; - pn1 = peek(i); - i += 1; - } while (pn.value !== ")" && pn1.value !== "=>" && pn1.value !== ";" && pn1.type !== "(end)"); + // These are JSHint boolean options which are shared with JSLint + // where the name has been changed but the effect is unchanged + renamedOptions = { + eqeq : "eqeqeq", + vars : "onevar", + windows: "wsh", + sloppy : "strict" + }, - if (state.tokens.next.id === "function") { - state.tokens.next.immed = true; - } + declared, // Globals that were declared using /*global ... */ syntax. + exported, // Variables that are used outside of the current file. - var exprs = []; + functionicity = [ + "closure", "exception", "global", "label", + "outer", "unused", "var" + ], - if (state.tokens.next.id !== ")") { - for (;;) { - if (pn1.value === "=>" && state.tokens.next.value === "{") { - bracket = state.tokens.next; - bracket.left = destructuringExpression(); - brackets.push(bracket); - for (var t in bracket.left) { - exprs.push(bracket.left[t].token); - } - } else { - exprs.push(expression(5)); - } - if (state.tokens.next.id !== ",") { - break; - } - comma(); - } + funct, // The current function + functions, // All of the functions + + global, // The global scope + implied, // Implied globals + inblock, + indent, + lookahead, + lex, + member, + membersOnly, + noreach, + predefined, // Global variables defined by option + + scope, // The current scope + stack, + unuseds, + urls, + warnings, + + extraModules = [], + emitter = new events.EventEmitter(); + + function checkOption(name, t) { + name = name.trim(); + + if (/^[+-]W\d{3}$/g.test(name)) { + return true; } - advance(")", this); - nospace(state.tokens.prev, state.tokens.curr); - if (state.option.immed && exprs[0] && exprs[0].id === "function") { - if (state.tokens.next.id !== "(" && - (state.tokens.next.id !== "." || (peek().value !== "call" && peek().value !== "apply"))) { - warning("W068", this); + if (valOptions[name] === undefined && boolOptions[name] === undefined) { + if (t.type !== "jslint") { + error("E001", t, name); + return false; } } - if (state.tokens.next.value === "=>") { - return exprs; - } - if (!exprs.length) { - return; - } - exprs[exprs.length - 1].paren = true; - if (exprs.length > 1) { - return Object.create(state.syntax[","], { exprs: { value: exprs } }); - } - return exprs[0]; - }); + return true; + } - application("=>"); + function isString(obj) { + return Object.prototype.toString.call(obj) === "[object String]"; + } - infix("[", function (left, that) { - nobreak(state.tokens.prev, state.tokens.curr); - nospace(); - var e = expression(5), s; - if (e && e.type === "(string)") { - if (!state.option.evil && (e.value === "eval" || e.value === "execScript")) { - warning("W061", that); + function isIdentifier(tkn, value) { + if (!tkn) + return false; + + if (!tkn.identifier || tkn.value !== value) + return false; + + return true; + } + + function isReserved(token) { + if (!token.reserved) { + return false; + } + var meta = token.meta; + + if (meta && meta.isFutureReservedWord && state.option.inES5()) { + // ES3 FutureReservedWord in an ES5 environment. + if (!meta.es5) { + return false; } - countMember(e.value); - if (!state.option.sub && reg.identifier.test(e.value)) { - s = state.syntax[e.value]; - if (!s || !isReserved(s)) { - warning("W069", state.tokens.prev, e.value); + // Some ES5 FutureReservedWord identifiers are active only + // within a strict mode environment. + if (meta.strictOnly) { + if (!state.option.strict && !state.directive["use strict"]) { + return false; } } - } - advance("]", that); - if (e && e.value === "hasOwnProperty" && state.tokens.next.value === "=") { - warning("W001"); + if (token.isProperty) { + return false; + } } - nospace(state.tokens.prev, state.tokens.curr); - that.left = left; - that.right = e; - return that; - }, 160, true); + return true; + } - function comprehensiveArrayExpression() { - var res = {}; - res.exps = true; - funct["(comparray)"].stack(); + function supplant(str, data) { + return str.replace(/\{([^{}]*)\}/g, function (a, b) { + var r = data[b]; + return typeof r === "string" || typeof r === "number" ? r : a; + }); + } - res.right = expression(5); - advance("for"); - if (state.tokens.next.value === "each") { - advance("each"); - if (!state.option.inMoz(true)) { - warning("W118", state.tokens.curr, "for each"); + function combine(t, o) { + var n; + for (n in o) { + if (_.has(o, n) && !_.has(JSHINT.blacklist, n)) { + t[n] = o[n]; } } - advance("("); - funct["(comparray)"].setState("define"); - res.left = expression(5); - advance(")"); - if (state.tokens.next.value === "if") { - advance("if"); - advance("("); - funct["(comparray)"].setState("filter"); - res.filter = expression(5); - advance(")"); - } - advance("]"); - funct["(comparray)"].unstack(); - return res; } - prefix("[", function () { - var blocktype = lookupBlockType(true); - if (blocktype.isCompArray) { - if (!state.option.inMoz(true)) { - warning("W118", state.tokens.curr, "array comprehension"); - } - return comprehensiveArrayExpression(); - } else if (blocktype.isDestAssign && !state.option.inESNext()) { - warning("W104", state.tokens.curr, "destructuring assignment"); + function updatePredefined() { + Object.keys(JSHINT.blacklist).forEach(function (key) { + delete predefined[key]; + }); + } + + function assume() { + if (state.option.es5) { + warning("I003"); } - var b = state.tokens.curr.line !== state.tokens.next.line; - this.first = []; - if (b) { - indent += state.option.indent; - if (state.tokens.next.from === indent + state.option.indent) { - indent += state.option.indent; - } + if (state.option.couch) { + combine(predefined, vars.couch); } - while (state.tokens.next.id !== "(end)") { - while (state.tokens.next.id === ",") { - if (!state.option.inES5()) - warning("W070"); - advance(","); - } - if (state.tokens.next.id === "]") { - break; - } - if (b && state.tokens.curr.line !== state.tokens.next.line) { - indentation(); - } - this.first.push(expression(10)); - if (state.tokens.next.id === ",") { - comma({ allowTrailing: true }); - if (state.tokens.next.id === "]" && !state.option.inES5(true)) { - warning("W070", state.tokens.curr); - break; - } - } else { - break; - } + + if (state.option.rhino) { + combine(predefined, vars.rhino); } - if (b) { - indent -= state.option.indent; - indentation(); + + if (state.option.shelljs) { + combine(predefined, vars.shelljs); + combine(predefined, vars.node); + } + if (state.option.typed) { + combine(predefined, vars.typed); } - advance("]", this); - return this; - }, 160); + if (state.option.phantom) { + combine(predefined, vars.phantom); + } - function property_name() { - var id = optionalidentifier(false, true); + if (state.option.prototypejs) { + combine(predefined, vars.prototypejs); + } - if (!id) { - if (state.tokens.next.id === "(string)") { - id = state.tokens.next.value; - advance(); - } else if (state.tokens.next.id === "(number)") { - id = state.tokens.next.value.toString(); - advance(); - } + if (state.option.node) { + combine(predefined, vars.node); + combine(predefined, vars.typed); } - if (id === "hasOwnProperty") { - warning("W001"); + if (state.option.devel) { + combine(predefined, vars.devel); } - return id; - } + if (state.option.dojo) { + combine(predefined, vars.dojo); + } + if (state.option.browser) { + combine(predefined, vars.browser); + combine(predefined, vars.typed); + } - function functionparams(parsed) { - var curr, next; - var params = []; - var ident; - var tokens = []; - var t; + if (state.option.nonstandard) { + combine(predefined, vars.nonstandard); + } - if (parsed) { - if (parsed instanceof Array) { - for (var i in parsed) { - curr = parsed[i]; - if (_.contains(["{", "["], curr.id)) { - for (t in curr.left) { - t = tokens[t]; - if (t.id) { - params.push(t.id); - addlabel(t.id, "unused", t.token); - } - } - } else if (curr.value === "...") { - if (!state.option.inESNext()) { - warning("W104", curr, "spread/rest operator"); - } - continue; - } else { - addlabel(curr.value, "unused", curr); - } - } - return params; - } else { - if (parsed.identifier === true) { - addlabel(parsed.value, "unused", parsed); - return [parsed]; - } - } + if (state.option.jquery) { + combine(predefined, vars.jquery); } - next = state.tokens.next; + if (state.option.mootools) { + combine(predefined, vars.mootools); + } - advance("("); - nospace(); + if (state.option.worker) { + combine(predefined, vars.worker); + } - if (state.tokens.next.id === ")") { - advance(")"); - return; + if (state.option.wsh) { + combine(predefined, vars.wsh); } - for (;;) { - if (_.contains(["{", "["], state.tokens.next.id)) { - tokens = destructuringExpression(); - for (t in tokens) { - t = tokens[t]; - if (t.id) { - params.push(t.id); - addlabel(t.id, "unused", t.token); - } - } - } else if (state.tokens.next.value === "...") { - if (!state.option.inESNext()) { - warning("W104", state.tokens.next, "spread/rest operator"); - } - advance("..."); - nospace(); - ident = identifier(true); - params.push(ident); - addlabel(ident, "unused", state.tokens.curr); - } else { - ident = identifier(true); - params.push(ident); - addlabel(ident, "unused", state.tokens.curr); - } - if (state.tokens.next.id === ",") { - comma(); - } else { - advance(")", next); - nospace(state.tokens.prev, state.tokens.curr); - return params; - } + if (state.option.globalstrict && state.option.strict !== false) { + state.option.strict = true; } - } + if (state.option.yui) { + combine(predefined, vars.yui); + } - function doFunction(name, statement, generator, fatarrowparams) { - var f; - var oldOption = state.option; - var oldIgnored = state.ignored; - var oldScope = scope; + // Let's assume that chronologically ES3 < ES5 < ES6/ESNext < Moz - state.option = Object.create(state.option); - state.ignored = Object.create(state.ignored); - scope = Object.create(scope); + state.option.inMoz = function (strict) { + if (strict) { + return state.option.moz && !state.option.esnext; + } + return state.option.moz; + }; - funct = { - "(name)" : name || "\"" + anonname + "\"", - "(line)" : state.tokens.next.line, - "(character)" : state.tokens.next.character, - "(context)" : funct, - "(breakage)" : 0, - "(loopage)" : 0, - "(metrics)" : createMetrics(state.tokens.next), - "(scope)" : scope, - "(statement)" : statement, - "(tokens)" : {}, - "(blockscope)": funct["(blockscope)"], - "(comparray)" : funct["(comparray)"] + state.option.inESNext = function (strict) { + if (strict) { + return !state.option.moz && state.option.esnext; + } + return state.option.moz || state.option.esnext; }; - if (generator) { - funct["(generator)"] = true; - } + state.option.inES5 = function (/* strict */) { + return !state.option.es3; + }; - f = funct; - state.tokens.curr.funct = funct; + state.option.inES3 = function (strict) { + if (strict) { + return !state.option.moz && !state.option.esnext && state.option.es3; + } + return state.option.es3; + }; + } - functions.push(funct); + // Produce an error warning. + function quit(code, line, chr) { + var percentage = Math.floor((line / state.lines.length) * 100); + var message = messages.errors[code].desc; - if (name) { - addlabel(name, "function"); - } + throw { + name: "JSHintError", + line: line, + character: chr, + message: message + " (" + percentage + "% scanned).", + raw: message, + code: code + }; + } - funct["(params)"] = functionparams(fatarrowparams); + function isundef(scope, code, token, a) { + return JSHINT.undefs.push([scope, code, token, a]); + } - funct["(metrics)"].verifyMaxParametersPerFunction(funct["(params)"]); + function warning(code, t, a, b, c, d) { + var ch, l, w, msg; - block(false, true, true, fatarrowparams ? true:false); + if (/^W\d{3}$/.test(code)) { + if (state.ignored[code]) + return; - if (generator && funct["(generator)"] !== "yielded") { - error("E047", state.tokens.curr); + msg = messages.warnings[code]; + } else if (/E\d{3}/.test(code)) { + msg = messages.errors[code]; + } else if (/I\d{3}/.test(code)) { + msg = messages.info[code]; } - funct["(metrics)"].verifyMaxStatementsPerFunction(); - funct["(metrics)"].verifyMaxComplexityPerFunction(); - funct["(unusedOption)"] = state.option.unused; - - scope = oldScope; - state.option = oldOption; - state.ignored = oldIgnored; - funct["(last)"] = state.tokens.curr.line; - funct["(lastcharacter)"] = state.tokens.curr.character; - funct = funct["(context)"]; + t = t || state.tokens.next; + if (t.id === "(end)") { // `~ + t = state.tokens.curr; + } - return f; - } + l = t.line || 0; + ch = t.from || 0; - function createMetrics(functionStartToken) { - return { - statementCount: 0, - nestedBlockDepth: -1, - ComplexityCount: 1, - verifyMaxStatementsPerFunction: function () { - if (state.option.maxstatements && - this.statementCount > state.option.maxstatements) { - warning("W071", functionStartToken, this.statementCount); - } - }, + w = { + id: "(error)", + raw: msg.desc, + code: msg.code, + evidence: state.lines[l - 1] || "", + line: l, + character: ch, + scope: JSHINT.scope, + a: a, + b: b, + c: c, + d: d + }; - verifyMaxParametersPerFunction: function (params) { - params = params || []; + w.reason = supplant(msg.desc, w); + JSHINT.errors.push(w); - if (state.option.maxparams && params.length > state.option.maxparams) { - warning("W072", functionStartToken, params.length); - } - }, + if (state.option.passfail) { + quit("E042", l, ch); + } - verifyMaxNestedBlockDepthPerFunction: function () { - if (state.option.maxdepth && - this.nestedBlockDepth > 0 && - this.nestedBlockDepth === state.option.maxdepth + 1) { - warning("W073", null, this.nestedBlockDepth); - } - }, + warnings += 1; + if (warnings >= state.option.maxerr) { + quit("E043", l, ch); + } - verifyMaxComplexityPerFunction: function () { - var max = state.option.maxcomplexity; - var cc = this.ComplexityCount; - if (max && cc > max) { - warning("W074", functionStartToken, cc); - } - } - }; + return w; } - function increaseComplexityCount() { - funct["(metrics)"].ComplexityCount += 1; + function warningAt(m, l, ch, a, b, c, d) { + return warning(m, { + line: l, + from: ch + }, a, b, c, d); } - // Parse assignments that were found instead of conditionals. - // For example: if (a = 1) { ... } - - function checkCondAssignment(expr) { - var id = expr.id; - if (id === ",") { - expr = expr.exprs[expr.exprs.length - 1]; - id = expr.id; - } - switch (id) { - case "=": - case "+=": - case "-=": - case "*=": - case "%=": - case "&=": - case "|=": - case "^=": - case "/=": - if (!expr.paren && !state.option.boss) { - warning("W084"); - } - } + function error(m, t, a, b, c, d) { + warning(m, t, a, b, c, d); } + function errorAt(m, l, ch, a, b, c, d) { + return error(m, { + line: l, + from: ch + }, a, b, c, d); + } - (function (x) { - x.nud = function (isclassdef) { - var b, f, i, p, t, g; - var props = {}; // All properties, including accessors - var tag = ""; - - function saveProperty(name, tkn) { - if (props[name] && _.has(props, name)) - warning("W075", state.tokens.next, i); - else - props[name] = {}; + // Tracking of "internal" scripts, like eval containing a static string + function addInternalSrc(elem, src) { + var i; + i = { + id: "(internal)", + elem: elem, + value: src + }; + JSHINT.internals.push(i); + return i; + } - props[name].basic = true; - props[name].basictkn = tkn; + function addlabel(t, type, tkn, islet) { + // Define t in the current function in the current scope. + if (type === "exception") { + if (_.has(funct["(context)"], t)) { + if (funct[t] !== true && !state.option.node) { + warning("W002", state.tokens.next, t); + } } + } - function saveSetter(name, tkn) { - if (props[name] && _.has(props, name)) { - if (props[name].basic || props[name].setter) - warning("W075", state.tokens.next, i); - } else { - props[name] = {}; + if (_.has(funct, t) && !funct["(global)"]) { + if (funct[t] === true) { + if (state.option.latedef) { + if ((state.option.latedef === true && _.contains([funct[t], type], "unction")) || + !_.contains([funct[t], type], "unction")) { + warning("W003", state.tokens.next, t); + } + } + } else { + if (!state.option.shadow && type !== "exception" || + (funct["(blockscope)"].getlabel(t))) { + warning("W004", state.tokens.next, t); } - - props[name].setter = true; - props[name].setterToken = tkn; } + } - function saveGetter(name) { - if (props[name] && _.has(props, name)) { - if (props[name].basic || props[name].getter) - warning("W075", state.tokens.next, i); - } else { - props[name] = {}; - } + // a double definition of a let variable in same block throws a TypeError + if (funct["(blockscope)"] && funct["(blockscope)"].current.has(t)) { + error("E044", state.tokens.next, t); + } - props[name].getter = true; - props[name].getterToken = state.tokens.curr; + // if the identifier is from a let, adds it only to the current blockscope + if (islet) { + funct["(blockscope)"].current.add(t, type, state.tokens.curr); + } else { + + funct[t] = type; + + if (tkn) { + funct["(tokens)"][t] = tkn; } - b = state.tokens.curr.line !== state.tokens.next.line; - if (b) { - indent += state.option.indent; - if (state.tokens.next.from === indent + state.option.indent) { - indent += state.option.indent; + if (funct["(global)"]) { + global[t] = funct; + if (_.has(implied, t)) { + if (state.option.latedef) { + if ((state.option.latedef === true && _.contains([funct[t], type], "unction")) || + !_.contains([funct[t], type], "unction")) { + warning("W003", state.tokens.next, t); + } + } + + delete implied[t]; } + } else { + scope[t] = funct; } + } + } - for (;;) { - if (state.tokens.next.id === "}") { - break; - } + function doOption() { + var nt = state.tokens.next; + var body = nt.body.split(",").map(function (s) { return s.trim(); }); + var predef = {}; - if (b) { - indentation(); + if (nt.type === "globals") { + body.forEach(function (g) { + g = g.split(":"); + var key = (g[0] || "").trim(); + var val = (g[1] || "").trim(); + + if (key.charAt(0) === "-") { + key = key.slice(1); + val = false; + + JSHINT.blacklist[key] = key; + updatePredefined(); + } else { + predef[key] = (val === "true"); } + }); - if (isclassdef && state.tokens.next.value === "static") { - advance("static"); - tag = "static "; + combine(predefined, predef); + + for (var key in predef) { + if (_.has(predef, key)) { + declared[key] = nt; } + } + } - if (state.tokens.next.value === "get" && peek().id !== ":") { - advance("get"); + if (nt.type === "exported") { + body.forEach(function (e) { + exported[e] = true; + }); + } - if (!state.option.inES5(!isclassdef)) { - error("E034"); - } + if (nt.type === "members") { + membersOnly = membersOnly || {}; - i = property_name(); - if (!i) { - error("E035"); - } + body.forEach(function (m) { + var ch1 = m.charAt(0); + var ch2 = m.charAt(m.length - 1); - // It is a Syntax Error if PropName of MethodDefinition is - // "constructor" and SpecialMethod of MethodDefinition is true. - if (isclassdef && i === "constructor") { - error("E049", state.tokens.next, "class getter method", i); - } + if (ch1 === ch2 && (ch1 === "\"" || ch1 === "'")) { + m = m + .substr(1, m.length - 2) + .replace("\\b", "\b") + .replace("\\t", "\t") + .replace("\\n", "\n") + .replace("\\v", "\v") + .replace("\\f", "\f") + .replace("\\r", "\r") + .replace("\\\\", "\\") + .replace("\\\"", "\""); + } - saveGetter(tag + i); - t = state.tokens.next; - adjacent(state.tokens.curr, state.tokens.next); - f = doFunction(); - p = f["(params)"]; + membersOnly[m] = false; + }); + } - if (p) { - warning("W076", t, p[0], i); - } + var numvals = [ + "maxstatements", + "maxparams", + "maxdepth", + "maxcomplexity", + "maxerr", + "maxlen", + "indent" + ]; - adjacent(state.tokens.curr, state.tokens.next); - } else if (state.tokens.next.value === "set" && peek().id !== ":") { - advance("set"); + if (nt.type === "jshint" || nt.type === "jslint") { + body.forEach(function (g) { + g = g.split(":"); + var key = (g[0] || "").trim(); + var val = (g[1] || "").trim(); - if (!state.option.inES5(!isclassdef)) { - error("E034"); - } + if (!checkOption(key, nt)) { + return; + } - i = property_name(); - if (!i) { - error("E035"); - } + if (numvals.indexOf(key) >= 0) { - // It is a Syntax Error if PropName of MethodDefinition is - // "constructor" and SpecialMethod of MethodDefinition is true. - if (isclassdef && i === "constructor") { - error("E049", state.tokens.next, "class setter method", i); - } + // GH988 - numeric options can be disabled by setting them to `false` + if (val !== "false") { + val = +val; - saveSetter(tag + i, state.tokens.next); - t = state.tokens.next; - adjacent(state.tokens.curr, state.tokens.next); - f = doFunction(); - p = f["(params)"]; + if (typeof val !== "number" || !isFinite(val) || val <= 0 || Math.floor(val) !== val) { + error("E032", nt, g[1].trim()); + return; + } - if (!p || p.length !== 1) { - warning("W077", t, i); - } - } else { - g = false; - if (state.tokens.next.value === "*" && state.tokens.next.type === "(punctuator)") { - if (!state.option.inESNext()) { - warning("W104", state.tokens.next, "generator functions"); + if (key === "indent") { + state.option["(explicitIndent)"] = true; + } + state.option[key] = val; + } else { + if (key === "indent") { + state.option["(explicitIndent)"] = false; + } else { + state.option[key] = false; } - advance("*"); - g = true; } - i = property_name(); - saveProperty(tag + i, state.tokens.next); - if (typeof i !== "string") { - break; - } + return; + } - if (state.tokens.next.value === "(") { - if (!state.option.inESNext()) { - warning("W104", state.tokens.curr, "concise methods"); - } - doFunction(i, undefined, g); - } else if (!isclassdef) { - advance(":"); - nonadjacent(state.tokens.curr, state.tokens.next); - expression(10); + if (key === "validthis") { + // `validthis` is valid only within a function scope. + if (funct["(global)"]) { + error("E009"); + } else { + if (val === "true" || val === "false") { + state.option.validthis = (val === "true"); + } else { + error("E002", nt); + } } - } - // It is a Syntax Error if PropName of MethodDefinition is "prototype". - if (isclassdef && i === "prototype") { - error("E049", state.tokens.next, "class method", i); + return; } - countMember(i); - if (isclassdef) { - tag = ""; - continue; + if (key === "quotmark") { + switch (val) { + case "true": + case "false": + state.option.quotmark = (val === "true"); + break; + case "double": + case "single": + state.option.quotmark = val; + break; + default: + error("E002", nt); + } + return; } - if (state.tokens.next.id === ",") { - comma({ allowTrailing: true, property: true }); - if (state.tokens.next.id === ",") { - warning("W070", state.tokens.curr); - } else if (state.tokens.next.id === "}" && !state.option.inES5(true)) { - warning("W070", state.tokens.curr); + + if (key === "unused") { + switch (val) { + case "true": + state.option.unused = true; + break; + case "false": + state.option.unused = false; + break; + case "vars": + case "strict": + state.option.unused = val; + break; + default: + error("E002", nt); } - } else { - break; + return; } - } - if (b) { - indent -= state.option.indent; - indentation(); - } - advance("}", this); - // Check for lonely setters if in the ES5 mode. - if (state.option.inES5()) { - for (var name in props) { - if (_.has(props, name) && props[name].setter && !props[name].getter) { - warning("W078", props[name].setterToken); + if (key === "latedef") { + switch (val) { + case "true": + state.option.latedef = true; + break; + case "false": + state.option.latedef = false; + break; + case "nofunc": + state.option.latedef = "nofunc"; + break; + default: + error("E002", nt); } + return; } - } - return this; - }; - x.fud = function () { - error("E036", state.tokens.curr); - }; - }(delim("{"))); - function destructuringExpression() { - var id, ids; - var identifiers = []; - if (!state.option.inESNext()) { - warning("W104", state.tokens.curr, "destructuring expression"); - } - var nextInnerDE = function () { - var ident; - if (_.contains(["[", "{"], state.tokens.next.value)) { - ids = destructuringExpression(); - for (var id in ids) { - id = ids[id]; - identifiers.push({ id: id.id, token: id.token }); + var match = /^([+-])(W\d{3})$/g.exec(key); + if (match) { + // ignore for -W..., unignore for +W... + state.ignored[match[2]] = (match[1] === "-"); + return; } - } else if (state.tokens.next.value === ",") { - identifiers.push({ id: null, token: state.tokens.curr }); - } else { - ident = identifier(); - if (ident) - identifiers.push({ id: ident, token: state.tokens.curr }); - } - }; - if (state.tokens.next.value === "[") { - advance("["); - nextInnerDE(); - while (state.tokens.next.value !== "]") { - advance(","); - nextInnerDE(); - } - advance("]"); - } else if (state.tokens.next.value === "{") { - advance("{"); - id = identifier(); - if (state.tokens.next.value === ":") { - advance(":"); - nextInnerDE(); - } else { - identifiers.push({ id: id, token: state.tokens.curr }); - } - while (state.tokens.next.value !== "}") { - advance(","); - id = identifier(); - if (state.tokens.next.value === ":") { - advance(":"); - nextInnerDE(); - } else { - identifiers.push({ id: id, token: state.tokens.curr }); + + var tn; + if (val === "true" || val === "false") { + if (nt.type === "jslint") { + tn = renamedOptions[key] || key; + state.option[tn] = (val === "true"); + + if (invertedOptions[tn] !== undefined) { + state.option[tn] = !state.option[tn]; + } + } else { + state.option[key] = (val === "true"); + } + + if (key === "newcap") { + state.option["(explicitNewcap)"] = true; + } + return; } - } - advance("}"); - } - return identifiers; - } - function destructuringExpressionMatch(tokens, value) { - if (value.first) { - _.zip(tokens, value.first).forEach(function (val) { - var token = val[0]; - var value = val[1]; - if (token && value) { - token.first = value; - } else if (token && token.first && !value) { - warning("W080", token.first, token.first.value); - } /* else { - XXX value is discarded: wouldn't it need a warning ? - } */ + + error("E002", nt); }); + + assume(); } } - var conststatement = stmt("const", function (prefix) { - var tokens, value; - // state variable to know if it is a lone identifier, or a destructuring statement. - var lone; + // We need a peek function. If it has an argument, it peeks that much farther + // ahead. It is used to distinguish + // for ( var i in ... + // from + // for ( var i = ... - if (!state.option.inESNext()) { - warning("W104", state.tokens.curr, "const"); + function peek(p) { + var i = p || 0, j = 0, t; + + while (j <= i) { + t = lookahead[j]; + if (!t) { + t = lookahead[j] = lex.token(); + } + j += 1; } + return t; + } - this.first = []; - for (;;) { - var names = []; - nonadjacent(state.tokens.curr, state.tokens.next); - if (_.contains(["{", "["], state.tokens.next.value)) { - tokens = destructuringExpression(); - lone = false; - } else { - tokens = [ { id: identifier(), token: state.tokens.curr } ]; - lone = true; + // Produce the next token. It looks for programming errors. + + function advance(id, t) { + switch (state.tokens.curr.id) { + case "(number)": + if (state.tokens.next.id === ".") { + warning("W005", state.tokens.curr); } - for (var t in tokens) { - t = tokens[t]; - if (funct[t.id] === "const") { - warning("E011", null, t.id); - } - if (funct["(global)"] && predefined[t.id] === false) { - warning("W079", t.token, t.id); - } - if (t.id) { - addlabel(t.id, "const"); - names.push(t.token); - } + break; + case "-": + if (state.tokens.next.id === "-" || state.tokens.next.id === "--") { + warning("W006"); } - if (prefix) { - break; + break; + case "+": + if (state.tokens.next.id === "+" || state.tokens.next.id === "++") { + warning("W007"); } + break; + } - this.first = this.first.concat(names); - - if (state.tokens.next.id !== "=") { - warning("E012", state.tokens.curr, state.tokens.curr.value); - } + if (state.tokens.curr.type === "(string)" || state.tokens.curr.identifier) { + anonname = state.tokens.curr.value; + } - if (state.tokens.next.id === "=") { - nonadjacent(state.tokens.curr, state.tokens.next); - advance("="); - nonadjacent(state.tokens.curr, state.tokens.next); - if (state.tokens.next.id === "undefined") { - warning("W080", state.tokens.prev, state.tokens.prev.value); - } - if (peek(0).id === "=" && state.tokens.next.identifier) { - error("E037", state.tokens.next, state.tokens.next.value); - } - value = expression(5); - if (lone) { - tokens[0].first = value; + if (id && state.tokens.next.id !== id) { + if (t) { + if (state.tokens.next.id === "(end)") { + error("E019", t, t.id); } else { - destructuringExpressionMatch(names, value); + error("E020", state.tokens.next, id, t.id, t.line, state.tokens.next.value); } + } else if (state.tokens.next.type !== "(identifier)" || state.tokens.next.value !== id) { + warning("W116", state.tokens.next, id, state.tokens.next.value); } - - if (state.tokens.next.id !== ",") { - break; - } - comma(); - } - return this; - }); - conststatement.exps = true; - var varstatement = stmt("var", function (prefix) { - // JavaScript does not have block scope. It only has function scope. So, - // declaring a variable in a block can have unexpected consequences. - var tokens, lone, value; - - if (funct["(onevar)"] && state.option.onevar) { - warning("W081"); - } else if (!funct["(global)"]) { - funct["(onevar)"] = true; } - this.first = []; + state.tokens.prev = state.tokens.curr; + state.tokens.curr = state.tokens.next; for (;;) { - var names = []; - nonadjacent(state.tokens.curr, state.tokens.next); - if (_.contains(["{", "["], state.tokens.next.value)) { - tokens = destructuringExpression(); - lone = false; - } else { - tokens = [ { id: identifier(), token: state.tokens.curr } ]; - lone = true; - } - for (var t in tokens) { - t = tokens[t]; - if (state.option.inESNext() && funct[t.id] === "const") { - warning("E011", null, t.id); - } - if (funct["(global)"] && predefined[t.id] === false) { - warning("W079", t.token, t.id); - } - if (t.id) { - addlabel(t.id, "unused", t.token); - names.push(t.token); - } - } - if (prefix) { - break; + state.tokens.next = lookahead.shift() || lex.token(); + + if (!state.tokens.next) { // No more tokens left, give up + quit("E041", state.tokens.curr.line); } - this.first = this.first.concat(names); + if (state.tokens.next.id === "(end)" || state.tokens.next.id === "(error)") { + return; + } - if (state.tokens.next.id === "=") { - nonadjacent(state.tokens.curr, state.tokens.next); - advance("="); - nonadjacent(state.tokens.curr, state.tokens.next); - if (state.tokens.next.id === "undefined") { - warning("W080", state.tokens.prev, state.tokens.prev.value); - } - if (peek(0).id === "=" && state.tokens.next.identifier) { - error("E038", state.tokens.next, state.tokens.next.value); - } - value = expression(5); - if (lone) { - tokens[0].first = value; - } else { - destructuringExpressionMatch(names, value); - } + if (state.tokens.next.check) { + state.tokens.next.check(); } - if (state.tokens.next.id !== ",") { - break; + if (state.tokens.next.isSpecial) { + doOption(); + } else { + if (state.tokens.next.id !== "(endline)") { + break; + } } - comma(); } - return this; - }); - varstatement.exps = true; - var letstatement = stmt("let", function (prefix) { - var tokens, lone, value, letblock; + } - if (!state.option.inESNext()) { - warning("W104", state.tokens.curr, "let"); + function isInfix(token) { + return token.infix || (!token.identifier && !!token.led); + } + + function isEndOfExpr() { + var curr = state.tokens.curr; + var next = state.tokens.next; + if (next.id === ";" || next.id === "}" || next.id === ":") { + return true; } + if (isInfix(next) === isInfix(curr) || (curr.id === "yield" && state.option.inMoz(true))) { + return curr.line !== next.line; + } + return false; + } - if (state.tokens.next.value === "(") { + // This is the heart of JSHINT, the Pratt parser. In addition to parsing, it + // is looking for ad hoc lint patterns. We add .fud to Pratt's model, which is + // like .nud except that it is only used on the first token of a statement. + // Having .fud makes it much easier to define statement-oriented languages like + // JavaScript. I retained Pratt's nomenclature. + + // .nud Null denotation + // .fud First null denotation + // .led Left denotation + // lbp Left binding power + // rbp Right binding power + + // They are elements of the parsing method called Top Down Operator Precedence. + + function expression(rbp, initial) { + var left, isArray = false, isObject = false, isLetExpr = false; + + // if current expression is a let expression + if (!initial && state.tokens.next.value === "let" && peek(0).value === "(") { if (!state.option.inMoz(true)) { - warning("W118", state.tokens.next, "let block"); + warning("W118", state.tokens.next, "let expressions"); } - advance("("); + isLetExpr = true; + // create a new block scope we use only for the current expression funct["(blockscope)"].stack(); - letblock = true; - } else if (funct["(nolet)"]) { - error("E048", state.tokens.curr); + advance("let"); + advance("("); + state.syntax["let"].fud.call(state.syntax["let"].fud, false); + advance(")"); } - if (funct["(onevar)"] && state.option.onevar) { - warning("W081"); - } else if (!funct["(global)"]) { - funct["(onevar)"] = true; + if (state.tokens.next.id === "(end)") + error("E006", state.tokens.curr); + + advance(); + + if (initial) { + anonname = "anonymous"; + funct["(verb)"] = state.tokens.curr.value; } - this.first = []; - for (;;) { - var names = []; - nonadjacent(state.tokens.curr, state.tokens.next); - if (_.contains(["{", "["], state.tokens.next.value)) { - tokens = destructuringExpression(); - lone = false; + if (initial === true && state.tokens.curr.fud) { + left = state.tokens.curr.fud(); + } else { + if (state.tokens.curr.nud) { + left = state.tokens.curr.nud(); } else { - tokens = [ { id: identifier(), token: state.tokens.curr.value } ]; - lone = true; + error("E030", state.tokens.curr, state.tokens.curr.id); } - for (var t in tokens) { - t = tokens[t]; - if (state.option.inESNext() && funct[t.id] === "const") { - warning("E011", null, t.id); - } - if (funct["(global)"] && predefined[t.id] === false) { - warning("W079", t.token, t.id); - } - if (t.id && !funct["(nolet)"]) { - addlabel(t.id, "unused", t.token, true); - names.push(t.token); + + while (rbp < state.tokens.next.lbp && !isEndOfExpr()) { + isArray = state.tokens.curr.value === "Array"; + isObject = state.tokens.curr.value === "Object"; + + // #527, new Foo.Array(), Foo.Array(), new Foo.Object(), Foo.Object() + // Line breaks in IfStatement heads exist to satisfy the checkJSHint + // "Line too long." error. + if (left && (left.value || (left.first && left.first.value))) { + // If the left.value is not "new", or the left.first.value is a "." + // then safely assume that this is not "new Array()" and possibly + // not "new Object()"... + if (left.value !== "new" || + (left.first && left.first.value && left.first.value === ".")) { + isArray = false; + // ...In the case of Object, if the left.value and state.tokens.curr.value + // are not equal, then safely assume that this not "new Object()" + if (left.value !== state.tokens.curr.value) { + isObject = false; + } + } } - } - if (prefix) { - break; - } - this.first = this.first.concat(names); + advance(); - if (state.tokens.next.id === "=") { - nonadjacent(state.tokens.curr, state.tokens.next); - advance("="); - nonadjacent(state.tokens.curr, state.tokens.next); - if (state.tokens.next.id === "undefined") { - warning("W080", state.tokens.prev, state.tokens.prev.value); + if (isArray && state.tokens.curr.id === "(" && state.tokens.next.id === ")") { + warning("W009", state.tokens.curr); } - if (peek(0).id === "=" && state.tokens.next.identifier) { - error("E037", state.tokens.next, state.tokens.next.value); + + if (isObject && state.tokens.curr.id === "(" && state.tokens.next.id === ")") { + warning("W010", state.tokens.curr); } - value = expression(5); - if (lone) { - tokens[0].first = value; + + if (left && state.tokens.curr.led) { + left = state.tokens.curr.led(left); } else { - destructuringExpressionMatch(names, value); + error("E033", state.tokens.curr, state.tokens.curr.id); } } - - if (state.tokens.next.id !== ",") { - break; - } - comma(); } - if (letblock) { - advance(")"); - block(true, true); - this.block = true; + if (isLetExpr) { funct["(blockscope)"].unstack(); } + return left; + } - return this; - }); - letstatement.exps = true; - blockstmt("class", function () { - return classdef.call(this, true); - }); +// Functions for conformance of style. - function classdef(stmt) { - /*jshint validthis:true */ - if (!state.option.inESNext()) { - warning("W104", state.tokens.curr, "class"); + function adjacent(left, right) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + if (state.option.white) { + if (left.character !== right.from && left.line === right.line) { + left.from += (left.character - left.from); + warning("W011", left, left.value); + } } - if (stmt) { - // BindingIdentifier - this.name = identifier(); - addlabel(this.name, "unused", state.tokens.curr); - } else if (state.tokens.next.identifier && state.tokens.next.value !== "extends") { - // BindingIdentifier(opt) - this.name = identifier(); - } - classtail(this); - return this; } - function classtail(c) { - var strictness = state.directive["use strict"]; - - // ClassHeritage(opt) - if (state.tokens.next.value === "extends") { - advance("extends"); - c.heritage = expression(10); + function nobreak(left, right) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + if (state.option.white && (left.character !== right.from || left.line !== right.line)) { + warning("W012", right, right.value); } - - // A ClassBody is always strict code. - state.directive["use strict"] = true; - advance("{"); - // ClassBody(opt) - c.body = state.syntax["{"].nud(true); - state.directive["use strict"] = strictness; } - blockstmt("function", function () { - var generator = false; - if (state.tokens.next.value === "*") { - advance("*"); - if (state.option.inESNext(true)) { - generator = true; - } else { - warning("W119", state.tokens.curr, "function*"); + function nospace(left, right) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + if (state.option.white && !left.comment) { + if (left.line === right.line) { + adjacent(left, right); } } - if (inblock) { - warning("W082", state.tokens.curr); + } - } - var i = identifier(); - if (funct[i] === "const") { - warning("E011", null, i); - } - adjacent(state.tokens.curr, state.tokens.next); - addlabel(i, "unction", state.tokens.curr); + function nonadjacent(left, right) { + if (state.option.white) { + left = left || state.tokens.curr; + right = right || state.tokens.next; - doFunction(i, { statement: true }, generator); - if (state.tokens.next.id === "(" && state.tokens.next.line === state.tokens.curr.line) { - error("E039"); - } - return this; - }); + if (left.value === ";" && right.value === ";") { + return; + } - prefix("function", function () { - var generator = false; - if (state.tokens.next.value === "*") { - if (!state.option.inESNext()) { - warning("W119", state.tokens.curr, "function*"); + if (left.line === right.line && left.character === right.from) { + left.from += (left.character - left.from); + warning("W013", left, left.value); } - advance("*"); - generator = true; - } - var i = optionalidentifier(); - if (i || state.option.gcl) { - adjacent(state.tokens.curr, state.tokens.next); - } else { - nonadjacent(state.tokens.curr, state.tokens.next); - } - doFunction(i, undefined, generator); - if (!state.option.loopfunc && funct["(loopage)"]) { - warning("W083"); } - return this; - }); + } - blockstmt("if", function () { - var t = state.tokens.next; - increaseComplexityCount(); - state.condition = true; - advance("("); - nonadjacent(this, t); - nospace(); - checkCondAssignment(expression(0)); - advance(")", t); - state.condition = false; - nospace(state.tokens.prev, state.tokens.curr); - block(true, true); - if (state.tokens.next.id === "else") { - nonadjacent(state.tokens.curr, state.tokens.next); - advance("else"); - if (state.tokens.next.id === "if" || state.tokens.next.id === "switch") { - statement(true); - } else { - block(true, true); + function nobreaknonadjacent(left, right) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + if (!state.option.laxbreak && left.line !== right.line) { + warning("W014", right, right.value); + } else if (state.option.white) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + if (left.character === right.from) { + left.from += (left.character - left.from); + warning("W013", left, left.value); } } - return this; - }); - - blockstmt("try", function () { - var b; - - function doCatch() { - var oldScope = scope; - var e; - - advance("catch"); - nonadjacent(state.tokens.curr, state.tokens.next); - advance("("); - - scope = Object.create(oldScope); + } - e = state.tokens.next.value; - if (state.tokens.next.type !== "(identifier)") { - e = null; - warning("E030", state.tokens.next, e); - } + function indentation(bias) { + if (!state.option.white && !state.option["(explicitIndent)"]) { + return; + } - advance(); + if (state.tokens.next.id === "(end)") { + return; + } - funct = { - "(name)" : "(catch)", - "(line)" : state.tokens.next.line, - "(character)": state.tokens.next.character, - "(context)" : funct, - "(breakage)" : funct["(breakage)"], - "(loopage)" : funct["(loopage)"], - "(scope)" : scope, - "(statement)": false, - "(metrics)" : createMetrics(state.tokens.next), - "(catch)" : true, - "(tokens)" : {}, - "(blockscope)": funct["(blockscope)"], - "(comparray)": funct["(comparray)"] - }; + var i = indent + (bias || 0); + if (state.tokens.next.from !== i) { + warning("W015", state.tokens.next, state.tokens.next.value, i, state.tokens.next.from); + } + } - if (e) { - addlabel(e, "exception"); - } + function nolinebreak(t) { + t = t || state.tokens.curr; + if (t.line !== state.tokens.next.line) { + warning("E022", t, t.value); + } + } - if (state.tokens.next.value === "if") { - if (!state.option.inMoz(true)) { - warning("W118", state.tokens.curr, "catch filter"); + function nobreakcomma(left, right) { + if (left.line !== right.line) { + if (!state.option.laxcomma) { + if (comma.first) { + warning("I001"); + comma.first = false; } - advance("if"); - expression(0); + warning("W014", left, right.value); } + } else if (!left.comment && left.character !== right.from && state.option.white) { + left.from += (left.character - left.from); + warning("W011", left, left.value); + } + } - advance(")"); - - state.tokens.curr.funct = funct; - functions.push(funct); + function comma(opts) { + opts = opts || {}; - block(false); + if (!opts.peek) { + nobreakcomma(state.tokens.curr, state.tokens.next); + advance(","); + } else { + nobreakcomma(state.tokens.prev, state.tokens.curr); + } - scope = oldScope; + // TODO: This is a temporary solution to fight against false-positives in + // arrays and objects with trailing commas (see GH-363). The best solution + // would be to extract all whitespace rules out of parser. - funct["(last)"] = state.tokens.curr.line; - funct["(lastcharacter)"] = state.tokens.curr.character; - funct = funct["(context)"]; + if (state.tokens.next.value !== "]" && state.tokens.next.value !== "}") { + nonadjacent(state.tokens.curr, state.tokens.next); } - block(false); - - while (state.tokens.next.id === "catch") { - increaseComplexityCount(); - if (b && (!state.option.inMoz(true))) { - warning("W118", state.tokens.next, "multiple catch blocks"); + if (state.tokens.next.identifier && !(opts.property && state.option.inES5())) { + // Keywords that cannot follow a comma operator. + switch (state.tokens.next.value) { + case "break": + case "case": + case "catch": + case "continue": + case "default": + case "do": + case "else": + case "finally": + case "for": + case "if": + case "in": + case "instanceof": + case "return": + case "switch": + case "throw": + case "try": + case "var": + case "let": + case "while": + case "with": + error("E024", state.tokens.next, state.tokens.next.value); + return false; } - doCatch(); - b = true; } - if (state.tokens.next.id === "finally") { - advance("finally"); - block(false); - return; - } + if (state.tokens.next.type === "(punctuator)") { + switch (state.tokens.next.value) { + case "}": + case "]": + case ",": + if (opts.allowTrailing) { + return true; + } - if (!b) { - error("E021", state.tokens.next, "catch", state.tokens.next.value); + /* falls through */ + case ")": + error("E024", state.tokens.next, state.tokens.next.value); + return false; + } } + return true; + } - return this; - }); - - blockstmt("while", function () { - var t = state.tokens.next; - funct["(breakage)"] += 1; - funct["(loopage)"] += 1; - increaseComplexityCount(); - advance("("); - nonadjacent(this, t); - nospace(); - checkCondAssignment(expression(0)); - advance(")", t); - nospace(state.tokens.prev, state.tokens.curr); - block(true, true); - funct["(breakage)"] -= 1; - funct["(loopage)"] -= 1; - return this; - }).labelled = true; + // Functional constructors for making the symbols that will be inherited by + // tokens. - blockstmt("with", function () { - var t = state.tokens.next; - if (state.directive["use strict"]) { - error("E010", state.tokens.curr); - } else if (!state.option.withstmt) { - warning("W085", state.tokens.curr); + function symbol(s, p) { + var x = state.syntax[s]; + if (!x || typeof x !== "object") { + state.syntax[s] = x = { + id: s, + lbp: p, + value: s + }; } + return x; + } - advance("("); - nonadjacent(this, t); - nospace(); - expression(0); - advance(")", t); - nospace(state.tokens.prev, state.tokens.curr); - block(true, true); + function delim(s) { + return symbol(s, 0); + } - return this; - }); + function stmt(s, f) { + var x = delim(s); + x.identifier = x.reserved = true; + x.fud = f; + return x; + } - blockstmt("switch", function () { - var t = state.tokens.next, - g = false; - funct["(breakage)"] += 1; - advance("("); - nonadjacent(this, t); - nospace(); - checkCondAssignment(expression(0)); - advance(")", t); - nospace(state.tokens.prev, state.tokens.curr); - nonadjacent(state.tokens.curr, state.tokens.next); - t = state.tokens.next; - advance("{"); - nonadjacent(state.tokens.curr, state.tokens.next); - indent += state.option.indent; - this.cases = []; + function blockstmt(s, f) { + var x = stmt(s, f); + x.block = true; + return x; + } - for (;;) { - switch (state.tokens.next.id) { - case "case": - switch (funct["(verb)"]) { - case "yield": - case "break": - case "case": - case "continue": - case "return": - case "switch": - case "throw": - break; - default: - // You can tell JSHint that you don't use break intentionally by - // adding a comment /* falls through */ on a line just before - // the next `case`. - if (!reg.fallsThrough.test(state.lines[state.tokens.next.line - 2])) { - warning("W086", state.tokens.curr, "case"); - } - } - indentation(-state.option.indent); - advance("case"); - this.cases.push(expression(20)); - increaseComplexityCount(); - g = true; - advance(":"); - funct["(verb)"] = "case"; - break; - case "default": - switch (funct["(verb)"]) { - case "yield": - case "break": - case "continue": - case "return": - case "throw": - break; - default: - // Do not display a warning if 'default' is the first statement or if - // there is a special /* falls through */ comment. - if (this.cases.length) { - if (!reg.fallsThrough.test(state.lines[state.tokens.next.line - 2])) { - warning("W086", state.tokens.curr, "default"); - } - } - } - indentation(-state.option.indent); - advance("default"); - g = true; - advance(":"); - break; - case "}": - indent -= state.option.indent; - indentation(); - advance("}", t); - funct["(breakage)"] -= 1; - funct["(verb)"] = undefined; - return; - case "(end)": - error("E023", state.tokens.next, "}"); - return; - default: - if (g) { - switch (state.tokens.curr.id) { - case ",": - error("E040"); - return; - case ":": - g = false; - statements(); - break; - default: - error("E025", state.tokens.curr); - return; - } - } else { - if (state.tokens.curr.id === ":") { - advance(":"); - error("E024", state.tokens.curr, ":"); - statements(); - } else { - error("E021", state.tokens.next, "case", state.tokens.next.value); - return; - } + function reserveName(x) { + var c = x.id.charAt(0); + if ((c >= "a" && c <= "z") || (c >= "A" && c <= "Z")) { + x.identifier = x.reserved = true; + } + return x; + } + + function prefix(s, f) { + var x = symbol(s, 150); + reserveName(x); + x.nud = (typeof f === "function") ? f : function () { + this.right = expression(150); + this.arity = "unary"; + if (this.id === "++" || this.id === "--") { + if (state.option.plusplus) { + warning("W016", this, this.id); + } else if ((!this.right.identifier || isReserved(this.right)) && + this.right.id !== "." && this.right.id !== "[") { + warning("W017", this); } } - } - }).labelled = true; + return this; + }; + return x; + } - stmt("debugger", function () { - if (!state.option.debug) { - warning("W087"); - } - return this; - }).exps = true; + function type(s, f) { + var x = delim(s); + x.type = s; + x.nud = f; + return x; + } - (function () { - var x = stmt("do", function () { - funct["(breakage)"] += 1; - funct["(loopage)"] += 1; - increaseComplexityCount(); + function reserve(name, func) { + var x = type(name, func); + x.identifier = true; + x.reserved = true; + return x; + } - this.first = block(true, true); - advance("while"); - var t = state.tokens.next; - nonadjacent(state.tokens.curr, t); - advance("("); - nospace(); - checkCondAssignment(expression(0)); - advance(")", t); - nospace(state.tokens.prev, state.tokens.curr); - funct["(breakage)"] -= 1; - funct["(loopage)"] -= 1; + function FutureReservedWord(name, meta) { + var x = type(name, (meta && meta.nud) || function () { return this; }); - x.labelled = true; - x.exps = true; - }()); - - blockstmt("for", function () { - var s, t = state.tokens.next; - var letscope = false; - var foreachtok = null; - if (t.value === "each") { - foreachtok = t; - advance("each"); - if (!state.option.inMoz(true)) { - warning("W118", state.tokens.curr, "for each"); - } - } + meta = meta || {}; + meta.isFutureReservedWord = true; - funct["(breakage)"] += 1; - funct["(loopage)"] += 1; - increaseComplexityCount(); - advance("("); - nonadjacent(this, t); - nospace(); + x.value = name; + x.identifier = true; + x.reserved = true; + x.meta = meta; - // what kind of for(…) statement it is? for(…of…)? for(…in…)? for(…;…;…)? - var nextop; // contains the token of the "in" or "of" operator - var i = 0; - var inof = ["in", "of"]; - do { - nextop = peek(i); - ++i; - } while (!_.contains(inof, nextop.value) && nextop.value !== ";" && - nextop.type !== "(end)"); + return x; + } - // if we're in a for (… in|of …) statement - if (_.contains(inof, nextop.value)) { - if (!state.option.inESNext() && nextop.value === "of") { - error("W104", nextop, "for of"); - } - if (state.tokens.next.id === "var") { - advance("var"); - state.syntax["var"].fud.call(state.syntax["var"].fud, true); - } else if (state.tokens.next.id === "let") { - advance("let"); - // create a new block scope - letscope = true; - funct["(blockscope)"].stack(); - state.syntax["let"].fud.call(state.syntax["let"].fud, true); - } else { - switch (funct[state.tokens.next.value]) { - case "unused": - funct[state.tokens.next.value] = "var"; - break; - case "var": - break; - default: - if (!funct["(blockscope)"].getlabel(state.tokens.next.value)) - warning("W088", state.tokens.next, state.tokens.next.value); - } - advance(); - } - advance(nextop.value); - expression(20); - advance(")", t); - s = block(true, true); - if (state.option.forin && s && (s.length > 1 || typeof s[0] !== "object" || - s[0].value !== "if")) { - warning("W089", this); - } - funct["(breakage)"] -= 1; - funct["(loopage)"] -= 1; - } else { - if (foreachtok) { - error("E045", foreachtok); - } - if (state.tokens.next.id !== ";") { - if (state.tokens.next.id === "var") { - advance("var"); - state.syntax["var"].fud.call(state.syntax["var"].fud); - } else if (state.tokens.next.id === "let") { - advance("let"); - // create a new block scope - letscope = true; - funct["(blockscope)"].stack(); - state.syntax["let"].fud.call(state.syntax["let"].fud); - } else { - for (;;) { - expression(0, "for"); - if (state.tokens.next.id !== ",") { - break; - } - comma(); - } - } + function reservevar(s, v) { + return reserve(s, function () { + if (typeof v === "function") { + v(this); } - nolinebreak(state.tokens.curr); - advance(";"); - if (state.tokens.next.id !== ";") { - checkCondAssignment(expression(0)); + return this; + }); + } + + function infix(s, f, p, w) { + var x = symbol(s, p); + reserveName(x); + x.infix = true; + x.led = function (left) { + if (!w) { + nobreaknonadjacent(state.tokens.prev, state.tokens.curr); + nonadjacent(state.tokens.curr, state.tokens.next); } - nolinebreak(state.tokens.curr); - advance(";"); - if (state.tokens.next.id === ";") { - error("E021", state.tokens.next, ")", ";"); + if (s === "in" && left.id === "!") { + warning("W018", left, "!"); } - if (state.tokens.next.id !== ")") { - for (;;) { - expression(0, "for"); - if (state.tokens.next.id !== ",") { - break; - } - comma(); - } + if (typeof f === "function") { + return f(left, this); + } else { + this.left = left; + this.right = expression(p); + return this; } - advance(")", t); - nospace(state.tokens.prev, state.tokens.curr); - block(true, true); - funct["(breakage)"] -= 1; - funct["(loopage)"] -= 1; - - } - // unstack loop blockscope - if (letscope) { - funct["(blockscope)"].unstack(); - } - return this; - }).labelled = true; - - - stmt("break", function () { - var v = state.tokens.next.value; + }; + return x; + } - if (funct["(breakage)"] === 0) - warning("W052", state.tokens.next, this.value); - if (!state.option.asi) - nolinebreak(this); + function application(s) { + var x = symbol(s, 42); - if (state.tokens.next.id !== ";") { - if (state.tokens.curr.line === state.tokens.next.line) { - if (funct[v] !== "label") { - warning("W090", state.tokens.next, v); - } else if (scope[v] !== funct) { - warning("W091", state.tokens.next, v); - } - this.first = state.tokens.next; - advance(); + x.led = function (left) { + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "arrow function syntax (=>)"); } - } - reachable("break"); - return this; - }).exps = true; + nobreaknonadjacent(state.tokens.prev, state.tokens.curr); + nonadjacent(state.tokens.curr, state.tokens.next); - stmt("continue", function () { - var v = state.tokens.next.value; + this.left = left; + this.right = doFunction(undefined, undefined, false, left); + return this; + }; + return x; + } - if (funct["(breakage)"] === 0) - warning("W052", state.tokens.next, this.value); + function relation(s, f) { + var x = symbol(s, 100); - if (!state.option.asi) - nolinebreak(this); + x.led = function (left) { + nobreaknonadjacent(state.tokens.prev, state.tokens.curr); + nonadjacent(state.tokens.curr, state.tokens.next); + var right = expression(100); - if (state.tokens.next.id !== ";") { - if (state.tokens.curr.line === state.tokens.next.line) { - if (funct[v] !== "label") { - warning("W090", state.tokens.next, v); - } else if (scope[v] !== funct) { - warning("W091", state.tokens.next, v); - } - this.first = state.tokens.next; - advance(); + if (isIdentifier(left, "NaN") || isIdentifier(right, "NaN")) { + warning("W019", this); + } else if (f) { + f.apply(this, [left, right]); } - } else if (!funct["(loopage)"]) { - warning("W052", state.tokens.next, this.value); - } - reachable("continue"); - return this; - }).exps = true; - - - stmt("return", function () { - if (this.line === state.tokens.next.line) { - if (state.tokens.next.id === "(regexp)") - warning("W092"); - if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { - nonadjacent(state.tokens.curr, state.tokens.next); - this.first = expression(0); + if (!left || !right) { + quit("E041", state.tokens.curr.line); + } - if (this.first && - this.first.type === "(punctuator)" && this.first.value === "=" && !state.option.boss) { - warningAt("W093", this.first.line, this.first.character); - } + if (left.id === "!") { + warning("W018", left, "!"); } - } else { - if (state.tokens.next.type === "(punctuator)" && - ["[", "{", "+", "-"].indexOf(state.tokens.next.value) > -1) { - nolinebreak(this); // always warn (Line breaking error) + + if (right.id === "!") { + warning("W018", right, "!"); } - } - reachable("return"); - return this; - }).exps = true; - stmt("yield", function () { - if (state.option.inESNext(true) && funct["(generator)"] !== true) { - error("E046", state.tokens.curr, "yield"); - } else if (!state.option.inESNext()) { - warning("W104", state.tokens.curr, "yield"); - } - funct["(generator)"] = "yielded"; - if (this.line === state.tokens.next.line) { - if (state.tokens.next.id === "(regexp)") - warning("W092"); + this.left = left; + this.right = right; + return this; + }; + return x; + } - if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { - nonadjacent(state.tokens.curr, state.tokens.next); - this.first = expression(0); + function isPoorRelation(node) { + return node && + ((node.type === "(number)" && +node.value === 0) || + (node.type === "(string)" && node.value === "") || + (node.type === "null" && !state.option.eqnull) || + node.type === "true" || + node.type === "false" || + node.type === "undefined"); + } - if (this.first.type === "(punctuator)" && this.first.value === "=" && !state.option.boss) { - warningAt("W093", this.first.line, this.first.character); + function assignop(s, f, p) { + var x = infix(s, typeof f === "function" ? f : function (left, that) { + that.left = left; + + if (left) { + if (predefined[left.value] === false && + scope[left.value]["(global)"] === true) { + warning("W020", left); + } else if (left["function"]) { + warning("W021", left, left.value); } - } - } else if (!state.option.asi) { - nolinebreak(this); // always warn (Line breaking error) - } - return this; - }).exps = true; + if (funct[left.value] === "const") { + error("E013", left, left.value); + } - stmt("throw", function () { - nolinebreak(this); - nonadjacent(state.tokens.curr, state.tokens.next); - this.first = expression(20); - reachable("throw"); - return this; - }).exps = true; + if (left.id === ".") { + if (!left.left) { + warning("E031", that); + } else if (left.left.value === "arguments" && !state.directive["use strict"]) { + warning("E031", that); + } - // Future Reserved Words + that.right = expression(10); + return that; + } else if (left.id === "[") { + if (state.tokens.curr.left.first) { + state.tokens.curr.left.first.forEach(function (t) { + if (funct[t.value] === "const") { + error("E013", t, t.value); + } + }); + } else if (!left.left) { + warning("E031", that); + } else if (left.left.value === "arguments" && !state.directive["use strict"]) { + warning("E031", that); + } + that.right = expression(10); + return that; + } else if (left.identifier && !isReserved(left)) { + if (funct[left.value] === "exception") { + warning("W022", left); + } + that.right = expression(10); + return that; + } - FutureReservedWord("abstract"); - FutureReservedWord("boolean"); - FutureReservedWord("byte"); - FutureReservedWord("char"); - FutureReservedWord("class", { es5: true, nud: classdef }); - FutureReservedWord("double"); - FutureReservedWord("enum", { es5: true }); - FutureReservedWord("export", { es5: true }); - FutureReservedWord("extends", { es5: true }); - FutureReservedWord("final"); - FutureReservedWord("float"); - FutureReservedWord("goto"); - FutureReservedWord("implements", { es5: true, strictOnly: true }); - FutureReservedWord("import", { es5: true }); - FutureReservedWord("int"); - FutureReservedWord("interface", { es5: true, strictOnly: true }); - FutureReservedWord("long"); - FutureReservedWord("native"); - FutureReservedWord("package", { es5: true, strictOnly: true }); - FutureReservedWord("private", { es5: true, strictOnly: true }); - FutureReservedWord("protected", { es5: true, strictOnly: true }); - FutureReservedWord("public", { es5: true, strictOnly: true }); - FutureReservedWord("short"); - FutureReservedWord("static", { es5: true, strictOnly: true }); - FutureReservedWord("super", { es5: true }); - FutureReservedWord("synchronized"); - FutureReservedWord("throws"); - FutureReservedWord("transient"); - FutureReservedWord("volatile"); + if (left === state.syntax["function"]) { + warning("W023", state.tokens.curr); + } + } - // this function is used to determine wether a squarebracket or a curlybracket - // expression is a comprehension array, destructuring assignment or a json value. + error("E031", that); + }, p); - var lookupBlockType = function () { - var pn, pn1; - var i = 0; - var bracketStack = 0; - var ret = {}; - if (_.contains(["[", "{"], state.tokens.curr.value)) - bracketStack += 1; - if (_.contains(["[", "{"], state.tokens.next.value)) - bracketStack += 1; - if (_.contains(["]", "}"], state.tokens.next.value)) - bracketStack -= 1; - do { - pn = peek(i); - pn1 = peek(i + 1); - i = i + 1; - if (_.contains(["[", "{"], pn.value)) { - bracketStack += 1; - } else if (_.contains(["]", "}"], pn.value)) { - bracketStack -= 1; + x.exps = true; + x.assign = true; + return x; + } + + + function bitwise(s, f, p) { + var x = symbol(s, p); + reserveName(x); + x.led = (typeof f === "function") ? f : function (left) { + if (state.option.bitwise) { + warning("W016", this, this.id); } - if (pn.identifier && pn.value === "for" && bracketStack === 1) { - ret.isCompArray = true; - ret.notJson = true; - break; + this.left = left; + this.right = expression(p); + return this; + }; + return x; + } + + + function bitwiseassignop(s) { + return assignop(s, function (left, that) { + if (state.option.bitwise) { + warning("W016", that, that.id); } - if (_.contains(["}", "]"], pn.value) && pn1.value === "=") { - ret.isDestAssign = true; - ret.notJson = true; - break; + nonadjacent(state.tokens.prev, state.tokens.curr); + nonadjacent(state.tokens.curr, state.tokens.next); + if (left) { + if (left.id === "." || left.id === "[" || + (left.identifier && !isReserved(left))) { + expression(10); + return that; + } + if (left === state.syntax["function"]) { + warning("W023", state.tokens.curr); + } + return that; } - if (pn.value === ";") { - ret.isBlock = true; - ret.notJson = true; + error("E031", that); + }, 20); + } + + + function suffix(s) { + var x = symbol(s, 150); + + x.led = function (left) { + if (state.option.plusplus) { + warning("W016", this, this.id); + } else if ((!left.identifier || isReserved(left)) && left.id !== "." && left.id !== "[") { + warning("W017", this); } - } while (bracketStack > 0 && pn.id !== "(end)" && i < 15); - return ret; - }; - // Check whether this function has been reached for a destructuring assign with undeclared values - function destructuringAssignOrJsonValue() { - // lookup for the assignment (esnext only) - // if it has semicolons, it is a block, so go parse it as a block - // or it's not a block, but there are assignments, check for undeclared variables + this.left = left; + return this; + }; + return x; + } - var block = lookupBlockType(); - if (block.notJson) { - if (!state.option.inESNext() && block.isDestAssign) { - warning("W104", state.tokens.curr, "destructuring assignment"); + // fnparam means that this identifier is being defined as a function + // argument (see identifier()) + // prop means that this identifier is that of an object property + + function optionalidentifier(fnparam, prop) { + if (!state.tokens.next.identifier) { + return; + } + + advance(); + + var curr = state.tokens.curr; + var val = state.tokens.curr.value; + + if (!isReserved(curr)) { + return val; + } + + if (prop) { + if (state.option.inES5()) { + return val; } - statements(); - // otherwise parse json value + } + + if (fnparam && val === "undefined") { + return val; + } + + // Display an info message about reserved words as properties + // and ES5 but do it only once. + if (prop && !api.getCache("displayed:I002")) { + api.setCache("displayed:I002", true); + warning("I002"); + } + + warning("W024", state.tokens.curr, state.tokens.curr.id); + return val; + } + + // fnparam means that this identifier is being defined as a function + // argument + // prop means that this identifier is that of an object property + function identifier(fnparam, prop) { + var i = optionalidentifier(fnparam, prop); + if (i) { + return i; + } + if (state.tokens.curr.id === "function" && state.tokens.next.id === "(") { + warning("W025"); } else { - state.option.laxbreak = true; - state.jsonMode = true; - jsonValue(); + error("E030", state.tokens.next, state.tokens.next.value); } } - // array comprehension parsing function - // parses and defines the three states of the list comprehension in order - // to avoid defining global variables, but keeping them to the list comprehension scope - // only. The order of the states are as follows: - // * "use" which will be the returned iterative part of the list comprehension - // * "define" which will define the variables local to the list comprehension - // * "filter" which will help filter out values - var arrayComprehension = function () { - var CompArray = function () { - this.mode = "use"; - this.variables = []; - }; - var _carrays = []; - var _current; - function declare(v) { - var l = _current.variables.filter(function (elt) { - // if it has, change its undef state - if (elt.value === v) { - elt.undef = false; - return v; - } - }).length; - return l !== 0; + function reachable(s) { + var i = 0, t; + if (state.tokens.next.id !== ";" || noreach) { + return; } - function use(v) { - var l = _current.variables.filter(function (elt) { - // and if it has been defined - if (elt.value === v && !elt.undef) { - if (elt.unused === true) { - elt.unused = false; + for (;;) { + t = peek(i); + if (t.reach) { + return; + } + if (t.id !== "(endline)") { + if (t.id === "function") { + if (!state.option.latedef) { + break; } - return v; + + warning("W026", t); + break; } - }).length; - // otherwise we warn about it - return (l === 0); + + warning("W027", t, t.value, s); + break; + } + i += 1; } - return {stack: function () { - _current = new CompArray(); - _carrays.push(_current); - }, - unstack: function () { - _current.variables.filter(function (v) { - if (v.unused) - warning("W098", v.token, v.value); - if (v.undef) - isundef(v.funct, "W117", v.token, v.value); - }); - _carrays.splice(_carrays[_carrays.length - 1], 1); - _current = _carrays[_carrays.length - 1]; - }, - setState: function (s) { - if (_.contains(["use", "define", "filter"], s)) - _current.mode = s; - }, - check: function (v) { - // When we are in "use" state of the list comp, we enqueue that var - if (_current && _current.mode === "use") { - _current.variables.push({funct: funct, - token: state.tokens.curr, - value: v, - undef: true, - unused: false}); - return true; - // When we are in "define" state of the list comp, - } else if (_current && _current.mode === "define") { - // check if the variable has been used previously - if (!declare(v)) { - _current.variables.push({funct: funct, - token: state.tokens.curr, - value: v, - undef: false, - unused: true}); - } - return true; - // When we are in "filter" state, - } else if (_current && _current.mode === "filter") { - // we check whether current variable has been declared - if (use(v)) { - // if not we warn about it - isundef(funct, "W117", state.tokens.curr, v); - } - return true; - } - return false; - } - }; - }; + } - // Parse JSON + function statement(noindent) { + var values; + var i = indent, r, s = scope, t = state.tokens.next; - function jsonValue() { + if (t.id === ";") { + advance(";"); + return; + } - function jsonObject() { - var o = {}, t = state.tokens.next; - advance("{"); - if (state.tokens.next.id !== "}") { - for (;;) { - if (state.tokens.next.id === "(end)") { - error("E026", state.tokens.next, t.line); - } else if (state.tokens.next.id === "}") { - warning("W094", state.tokens.curr); - break; - } else if (state.tokens.next.id === ",") { - error("E028", state.tokens.next); - } else if (state.tokens.next.id !== "(string)") { - warning("W095", state.tokens.next, state.tokens.next.value); - } - if (o[state.tokens.next.value] === true) { - warning("W075", state.tokens.next, state.tokens.next.value); - } else if ((state.tokens.next.value === "__proto__" && - !state.option.proto) || (state.tokens.next.value === "__iterator__" && - !state.option.iterator)) { - warning("W096", state.tokens.next, state.tokens.next.value); - } else { - o[state.tokens.next.value] = true; - } - advance(); - advance(":"); - jsonValue(); - if (state.tokens.next.id !== ",") { - break; - } - advance(","); - } - } - advance("}"); + // Is this a labelled statement? + var res = isReserved(t); + + // We're being more tolerant here: if someone uses + // a FutureReservedWord as a label, we warn but proceed + // anyway. + + if (res && t.meta && t.meta.isFutureReservedWord && peek().id === ":") { + warning("W024", t, t.id); + res = false; } - function jsonArray() { - var t = state.tokens.next; - advance("["); - if (state.tokens.next.id !== "]") { - for (;;) { - if (state.tokens.next.id === "(end)") { - error("E027", state.tokens.next, t.line); - } else if (state.tokens.next.id === "]") { - warning("W094", state.tokens.curr); - break; - } else if (state.tokens.next.id === ",") { - error("E028", state.tokens.next); - } - jsonValue(); - if (state.tokens.next.id !== ",") { - break; - } - advance(","); + // detect a destructuring assignment + if (_.has(["[", "{"], t.value)) { + if (lookupBlockType().isDestAssign) { + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "destructuring expression"); } + values = destructuringExpression(); + values.forEach(function (tok) { + isundef(funct, "W117", tok.token, tok.id); + }); + advance("="); + destructuringExpressionMatch(values, expression(10, true)); + advance(";"); + return; } - advance("]"); } - - switch (state.tokens.next.id) { - case "{": - jsonObject(); - break; - case "[": - jsonArray(); - break; - case "true": - case "false": - case "null": - case "(number)": - case "(string)": + if (t.identifier && !res && peek().id === ":") { advance(); - break; - case "-": - advance("-"); - if (state.tokens.curr.character !== state.tokens.next.from) { - warning("W011", state.tokens.curr); + advance(":"); + scope = Object.create(s); + addlabel(t.value, "label"); + + if (!state.tokens.next.labelled && state.tokens.next.value !== "{") { + warning("W028", state.tokens.next, t.value, state.tokens.next.value); } - adjacent(state.tokens.curr, state.tokens.next); - advance("(number)"); - break; - default: - error("E003", state.tokens.next); + + state.tokens.next.label = t.value; + t = state.tokens.next; } - } - var blockScope = function () { - var _current = {}; - var _variables = [_current]; + // Is it a lonely block? - function _checkBlockLabels() { - for (var t in _current) { - if (_current[t]["(type)"] === "unused") { - if (state.option.unused) { - var tkn = _current[t]["(token)"]; - var line = tkn.line; - var chr = tkn.character; - warningAt("W098", line, chr, t); - } - } - } + if (t.id === "{") { + block(true, true); + return; } - return { - stack: function () { - _current = {}; - _variables.push(_current); - }, + // Parse the statement. - unstack: function () { - _checkBlockLabels(); - _variables.splice(_variables.length - 1, 1); - _current = _.last(_variables); - }, + if (!noindent) { + indentation(); + } + r = expression(0, true); - getlabel: function (l) { - for (var i = _variables.length - 1 ; i >= 0; --i) { - if (_.has(_variables[i], l)) { - return _variables[i]; - } - } - }, + // Look for the final semicolon. - current: { - has: function (t) { - return _.has(_current, t); - }, - add: function (t, type, tok) { - _current[t] = { "(type)" : type, - "(token)": tok }; + if (!t.block) { + if (!state.option.expr && (!r || !r.exps)) { + warning("W030", state.tokens.curr); + } else if (state.option.nonew && r && r.left && r.id === "(" && r.left.id === "new") { + warning("W031", t); + } + + if (state.tokens.next.id !== ";") { + if (!state.option.asi) { + // If this is the last statement in a block that ends on + // the same line *and* option lastsemic is on, ignore the warning. + // Otherwise, complain about missing semicolon. + if (!state.option.lastsemic || state.tokens.next.id !== "}" || + state.tokens.next.line !== state.tokens.curr.line) { + warningAt("W033", state.tokens.curr.line, state.tokens.curr.character); + } } + } else { + adjacent(state.tokens.curr, state.tokens.next); + advance(";"); + nonadjacent(state.tokens.curr, state.tokens.next); } - }; - }; + } - // The actual JSHINT function itself. - var itself = function (s, o, g) { - var a, i, k, x; - var optionKeys; - var newOptionObj = {}; - var newIgnoredObj = {}; + // Restore the indentation. - state.reset(); + indent = i; + scope = s; + return r; + } - if (o && o.scope) { - JSHINT.scope = o.scope; - } else { - JSHINT.errors = []; - JSHINT.undefs = []; - JSHINT.internals = []; - JSHINT.blacklist = {}; - JSHINT.scope = "(main)"; - } - predefined = Object.create(null); - combine(predefined, vars.ecmaIdentifiers); - combine(predefined, vars.reservedVars); - - combine(predefined, g || {}); + function statements(startLine) { + var a = [], p; - declared = Object.create(null); - exported = Object.create(null); + while (!state.tokens.next.reach && state.tokens.next.id !== "(end)") { + if (state.tokens.next.id === ";") { + p = peek(); - if (o) { - a = o.predef; - if (a) { - if (!Array.isArray(a) && typeof a === "object") { - a = Object.keys(a); + if (!p || (p.id !== "(" && p.id !== "[")) { + warning("W032"); } - a.forEach(function (item) { - var slice, prop; - - if (item[0] === "-") { - slice = item.slice(1); - JSHINT.blacklist[slice] = slice; - } else { - prop = Object.getOwnPropertyDescriptor(o.predef, item); - predefined[item] = prop ? prop.value : false; - } - }); + advance(";"); + } else { + a.push(statement(startLine === state.tokens.next.line)); } + } + return a; + } - optionKeys = Object.keys(o); - for (x = 0; x < optionKeys.length; x++) { - if (/^-W\d{3}$/g.test(optionKeys[x])) { - newIgnoredObj[optionKeys[x].slice(1)] = true; - } else { - newOptionObj[optionKeys[x]] = o[optionKeys[x]]; - if (optionKeys[x] === "newcap" && o[optionKeys[x]] === false) - newOptionObj["(explicitNewcap)"] = true; + /* + * read all directives + * recognizes a simple form of asi, but always + * warns, if it is used + */ + function directives() { + var i, p, pn; - if (optionKeys[x] === "indent") - newOptionObj["(explicitIndent)"] = o[optionKeys[x]] === false ? false : true; + for (;;) { + if (state.tokens.next.id === "(string)") { + p = peek(0); + if (p.id === "(endline)") { + i = 1; + do { + pn = peek(i); + i = i + 1; + } while (pn.id === "(endline)"); + + if (pn.id !== ";") { + if (pn.id !== "(string)" && pn.id !== "(number)" && + pn.id !== "(regexp)" && pn.identifier !== true && + pn.id !== "}") { + break; + } + warning("W033", state.tokens.next); + } else { + p = pn; + } + } else if (p.id === "}") { + // Directive with no other statements, warn about missing semicolon + warning("W033", p); + } else if (p.id !== ";") { + break; } - } - } - state.option = newOptionObj; - state.ignored = newIgnoredObj; + indentation(); + advance(); + if (state.directive[state.tokens.curr.value]) { + warning("W034", state.tokens.curr, state.tokens.curr.value); + } - state.option.indent = state.option.indent || 4; - state.option.maxerr = state.option.maxerr || 50; + if (state.tokens.curr.value === "use strict") { + if (!state.option["(explicitNewcap)"]) + state.option.newcap = true; + state.option.undef = true; + } - indent = 1; - global = Object.create(predefined); - scope = global; - funct = { - "(global)": true, - "(name)": "(global)", - "(scope)": scope, - "(breakage)": 0, - "(loopage)": 0, - "(tokens)": {}, - "(metrics)": createMetrics(state.tokens.next), - "(blockscope)": blockScope(), - "(comparray)": arrayComprehension() - }; - functions = [funct]; - urls = []; - stack = null; - member = {}; - membersOnly = null; - implied = {}; - inblock = false; - lookahead = []; - warnings = 0; - unuseds = []; + // there's no directive negation, so always set to true + state.directive[state.tokens.curr.value] = true; - if (!isString(s) && !Array.isArray(s)) { - errorAt("E004", 0); - return false; + if (p.id === ";") { + advance(";"); + } + continue; + } + break; } + } - api = { - get isJSON() { - return state.jsonMode; - }, - - getOption: function (name) { - return state.option[name] || null; - }, - - getCache: function (name) { - return state.cache[name]; - }, - setCache: function (name, value) { - state.cache[name] = value; - }, + /* + * Parses a single block. A block is a sequence of statements wrapped in + * braces. + * + * ordinary - true for everything but function bodies and try blocks. + * stmt - true if block can be a single statement (e.g. in if/for/while). + * isfunc - true if block is a function body + */ + function block(ordinary, stmt, isfunc, isfatarrow) { + var a, + b = inblock, + old_indent = indent, + m, + s = scope, + t, + line, + d; - warn: function (code, data) { - warningAt.apply(null, [ code, data.line, data.char ].concat(data.data)); - }, + inblock = ordinary; - on: function (names, listener) { - names.split(" ").forEach(function (name) { - emitter.on(name, listener); - }.bind(this)); - } - }; + if (!ordinary || !state.option.funcscope) + scope = Object.create(scope); - emitter.removeAllListeners(); - (extraModules || []).forEach(function (func) { - func(api); - }); + nonadjacent(state.tokens.curr, state.tokens.next); + t = state.tokens.next; - state.tokens.prev = state.tokens.curr = state.tokens.next = state.syntax["(begin)"]; + var metrics = funct["(metrics)"]; + metrics.nestedBlockDepth += 1; + metrics.verifyMaxNestedBlockDepthPerFunction(); - lex = new Lexer(s); + if (state.tokens.next.id === "{") { + advance("{"); - lex.on("warning", function (ev) { - warningAt.apply(null, [ ev.code, ev.line, ev.character].concat(ev.data)); - }); + // create a new block scope + funct["(blockscope)"].stack(); - lex.on("error", function (ev) { - errorAt.apply(null, [ ev.code, ev.line, ev.character ].concat(ev.data)); - }); + line = state.tokens.curr.line; + if (state.tokens.next.id !== "}") { + indent += state.option.indent; + while (!ordinary && state.tokens.next.from > indent) { + indent += state.option.indent; + } - lex.on("fatal", function (ev) { - quit("E041", ev.line, ev.from); - }); + if (isfunc) { + m = {}; + for (d in state.directive) { + if (_.has(state.directive, d)) { + m[d] = state.directive[d]; + } + } + directives(); - lex.on("Identifier", function (ev) { - emitter.emit("Identifier", ev); - }); + if (state.option.strict && funct["(context)"]["(global)"]) { + if (!m["use strict"] && !state.directive["use strict"]) { + warning("E007"); + } + } + } - lex.on("String", function (ev) { - emitter.emit("String", ev); - }); + a = statements(line); - lex.on("Number", function (ev) { - emitter.emit("Number", ev); - }); + metrics.statementCount += a.length; - lex.start(); + if (isfunc) { + state.directive = m; + } - // Check options - for (var name in o) { - if (_.has(o, name)) { - checkOption(name, state.tokens.curr); + indent -= state.option.indent; + if (line !== state.tokens.next.line) { + indentation(); + } + } else if (line !== state.tokens.next.line) { + indentation(); } - } + advance("}", t); - assume(); + funct["(blockscope)"].unstack(); - // combine the passed globals after we've assumed all our options - combine(predefined, g || {}); + indent = old_indent; + } else if (!ordinary) { + if (isfunc) { + m = {}; + if (stmt && !isfatarrow && !state.option.inMoz(true)) { + error("W118", state.tokens.curr, "function closure expressions"); + } - //reset values - comma.first = true; + if (!stmt) { + for (d in state.directive) { + if (_.has(state.directive, d)) { + m[d] = state.directive[d]; + } + } + } + expression(10); - try { - advance(); - switch (state.tokens.next.id) { - case "{": - case "[": - destructuringAssignOrJsonValue(); - break; - default: - directives(); - - if (state.directive["use strict"]) { - if (!state.option.globalstrict && !state.option.node) { - warning("W097", state.tokens.prev); + if (state.option.strict && funct["(context)"]["(global)"]) { + if (!m["use strict"] && !state.directive["use strict"]) { + warning("E007"); } } - - statements(); + } else { + error("E021", state.tokens.next, "{", state.tokens.next.value); } - advance((state.tokens.next && state.tokens.next.value !== ".") ? "(end)" : undefined); - funct["(blockscope)"].unstack(); - - var markDefined = function (name, context) { - do { - if (typeof context[name] === "string") { - // JSHINT marks unused variables as 'unused' and - // unused function declaration as 'unction'. This - // code changes such instances back 'var' and - // 'closure' so that the code in JSHINT.data() - // doesn't think they're unused. - - if (context[name] === "unused") - context[name] = "var"; - else if (context[name] === "unction") - context[name] = "closure"; - - return true; - } - - context = context["(context)"]; - } while (context); - - return false; - }; - - var clearImplied = function (name, line) { - if (!implied[name]) - return; - - var newImplied = []; - for (var i = 0; i < implied[name].length; i += 1) { - if (implied[name][i] !== line) - newImplied.push(implied[name][i]); - } + } else { - if (newImplied.length === 0) - delete implied[name]; - else - implied[name] = newImplied; - }; + // check to avoid let declaration not within a block + funct["(nolet)"] = true; - var warnUnused = function (name, tkn, type, unused_opt) { - var line = tkn.line; - var chr = tkn.character; + if (!stmt || state.option.curly) { + warning("W116", state.tokens.next, "{", state.tokens.next.value); + } - if (unused_opt === undefined) { - unused_opt = state.option.unused; - } + noreach = true; + indent += state.option.indent; + // test indentation only if statement is in new line + a = [statement(state.tokens.next.line === state.tokens.curr.line)]; + indent -= state.option.indent; + noreach = false; - if (unused_opt === true) { - unused_opt = "last-param"; - } + delete funct["(nolet)"]; + } + funct["(verb)"] = null; + if (!ordinary || !state.option.funcscope) scope = s; + inblock = b; + if (ordinary && state.option.noempty && (!a || a.length === 0)) { + warning("W035"); + } + metrics.nestedBlockDepth -= 1; + return a; + } - var warnable_types = { - "vars": ["var"], - "last-param": ["var", "param"], - "strict": ["var", "param", "last-param"] - }; - if (unused_opt) { - if (warnable_types[unused_opt] && warnable_types[unused_opt].indexOf(type) !== -1) { - warningAt("W098", line, chr, name); - } - } + function countMember(m) { + if (membersOnly && typeof membersOnly[m] !== "boolean") { + warning("W036", state.tokens.curr, m); + } + if (typeof member[m] === "number") { + member[m] += 1; + } else { + member[m] = 1; + } + } - unuseds.push({ - name: name, - line: line, - character: chr - }); - }; - var checkUnused = function (func, key) { - var type = func[key]; - var tkn = func["(tokens)"][key]; + function note_implied(tkn) { + var name = tkn.value, line = tkn.line, a = implied[name]; + if (typeof a === "function") { + a = false; + } - if (key.charAt(0) === "(") - return; + if (!a) { + a = [line]; + implied[name] = a; + } else if (a[a.length - 1] !== line) { + a.push(line); + } + } - if (type !== "unused" && type !== "unction") - return; - // Params are checked separately from other variables. - if (func["(params)"] && func["(params)"].indexOf(key) !== -1) - return; + // Build the syntax table by declaring the syntactic elements of the language. - // Variable is in global scope and defined as exported. - if (func["(global)"] && _.has(exported, key)) { - return; - } + type("(number)", function () { + return this; + }); - warnUnused(key, tkn, "var"); - }; + type("(string)", function () { + return this; + }); - // Check queued 'x is not defined' instances to see if they're still undefined. - for (i = 0; i < JSHINT.undefs.length; i += 1) { - k = JSHINT.undefs[i].slice(0); + state.syntax["(identifier)"] = { + type: "(identifier)", + lbp: 0, + identifier: true, + nud: function () { + var v = this.value, + s = scope[v], + f; - if (markDefined(k[2].value, k[0])) { - clearImplied(k[2].value, k[2].line); - } else if (state.option.undef) { - warning.apply(warning, k.slice(1)); - } + if (typeof s === "function") { + // Protection against accidental inheritance. + s = undefined; + } else if (typeof s === "boolean") { + f = funct; + funct = functions[0]; + addlabel(v, "var"); + s = funct; + funct = f; + } + var block; + if (_.has(funct, "(blockscope)")) { + block = funct["(blockscope)"].getlabel(v); } - functions.forEach(function (func) { - if (func["(unusedOption)"] === false) { - return; - } - - for (var key in func) { - if (_.has(func, key)) { - checkUnused(func, key); - } + // The name is in scope and defined in the current function. + if (funct === s || block) { + // Change 'unused' to 'var', and reject labels. + // the name is in a block scope + switch (block ? block[v]["(type)"] : funct[v]) { + case "unused": + if (block) block[v]["(type)"] = "var"; + else funct[v] = "var"; + break; + case "unction": + if (block) block[v]["(type)"] = "function"; + else funct[v] = "function"; + this["function"] = true; + break; + case "function": + this["function"] = true; + break; + case "label": + warning("W037", state.tokens.curr, v); + break; } + } else if (funct["(global)"]) { + // The name is not defined in the function. If we are in the global + // scope, then we have an undefined variable. + // + // Operators typeof and delete do not raise runtime errors even if + // the base object of a reference is null so no need to display warning + // if we're inside of typeof or delete. - if (!func["(params)"]) - return; - - var params = func["(params)"].slice(); - var param = params.pop(); - var type, unused_opt; - - while (param) { - type = func[param]; - unused_opt = func["(unusedOption)"] || state.option.unused; - unused_opt = unused_opt === true ? "last-param" : unused_opt; - - // 'undefined' is a special case for (function (window, undefined) { ... })(); - // patterns. + if (typeof predefined[v] !== "boolean") { + // Attempting to subscript a null reference will throw an + // error, even within the typeof and delete operators + if (!(anonname === "typeof" || anonname === "delete") || + (state.tokens.next && (state.tokens.next.value === "." || + state.tokens.next.value === "["))) { - if (param === "undefined") - return; + // if we're in a list comprehension, variables are declared + // locally and used before being defined. So we check + // the presence of the given variable in the comp array + // before declaring it undefined. - if (type === "unused" || type === "unction") { - warnUnused(param, func["(tokens)"][param], "param", func["(unusedOption)"]); - } else if (unused_opt === "last-param") { - return; + if (!funct["(comparray)"].check(v)) { + isundef(funct, "W117", state.tokens.curr, v); + } } - - param = params.pop(); } - }); - for (var key in declared) { - if (_.has(declared, key) && !_.has(global, key)) { - warnUnused(key, declared[key], "var"); - } - } - - } catch (err) { - if (err && err.name === "JSHintError") { - var nt = state.tokens.next || {}; - JSHINT.errors.push({ - scope : "(main)", - raw : err.raw, - reason : err.message, - line : err.line || nt.line, - character : err.character || nt.from - }, null); + note_implied(state.tokens.curr); } else { - throw err; - } - } - - // Loop over the listed "internals", and check them as well. + // If the name is already defined in the current + // function, but not as outer, then there is a scope error. - if (JSHINT.scope === "(main)") { - o = o || {}; + switch (funct[v]) { + case "closure": + case "function": + case "var": + case "unused": + warning("W038", state.tokens.curr, v); + break; + case "label": + warning("W037", state.tokens.curr, v); + break; + case "outer": + case "global": + break; + default: + // If the name is defined in an outer function, make an outer entry, + // and if it was unused, make it var. + if (s === true) { + funct[v] = true; + } else if (s === null) { + warning("W039", state.tokens.curr, v); + note_implied(state.tokens.curr); + } else if (typeof s !== "object") { + // Operators typeof and delete do not raise runtime errors even + // if the base object of a reference is null so no need to + // + // display warning if we're inside of typeof or delete. + // Attempting to subscript a null reference will throw an + // error, even within the typeof and delete operators + if (!(anonname === "typeof" || anonname === "delete") || + (state.tokens.next && + (state.tokens.next.value === "." || state.tokens.next.value === "["))) { - for (i = 0; i < JSHINT.internals.length; i += 1) { - k = JSHINT.internals[i]; - o.scope = k.elem; - itself(k.value, o, g); + isundef(funct, "W117", state.tokens.curr, v); + } + funct[v] = true; + note_implied(state.tokens.curr); + } else { + switch (s[v]) { + case "function": + case "unction": + this["function"] = true; + s[v] = "closure"; + funct[v] = s["(global)"] ? "global" : "outer"; + break; + case "var": + case "unused": + s[v] = "closure"; + funct[v] = s["(global)"] ? "global" : "outer"; + break; + case "closure": + funct[v] = s["(global)"] ? "global" : "outer"; + break; + case "label": + warning("W037", state.tokens.curr, v); + } + } + } } + return this; + }, + led: function () { + error("E033", state.tokens.next, state.tokens.next.value); } - - return JSHINT.errors.length === 0; - }; - - // Modules. - itself.addModule = function (func) { - extraModules.push(func); }; - itself.addModule(style.register); - - // Data summary. - itself.data = function () { - var data = { - functions: [], - options: state.option - }; - var implieds = []; - var members = []; - var fu, f, i, j, n, globals; + type("(regexp)", function () { + return this; + }); - if (itself.errors.length) { - data.errors = itself.errors; - } + // ECMAScript parser - if (state.jsonMode) { - data.json = true; - } + delim("(endline)"); + delim("(begin)"); + delim("(end)").reach = true; + delim("(error)").reach = true; + delim("}").reach = true; + delim(")"); + delim("]"); + delim("\"").reach = true; + delim("'").reach = true; + delim(";"); + delim(":").reach = true; + delim("#"); - for (n in implied) { - if (_.has(implied, n)) { - implieds.push({ - name: n, - line: implied[n] - }); - } + reserve("else"); + reserve("case").reach = true; + reserve("catch"); + reserve("default").reach = true; + reserve("finally"); + reservevar("arguments", function (x) { + if (state.directive["use strict"] && funct["(global)"]) { + warning("E008", x); } - - if (implieds.length > 0) { - data.implieds = implieds; + }); + reservevar("eval"); + reservevar("false"); + reservevar("Infinity"); + reservevar("null"); + reservevar("this", function (x) { + if (state.directive["use strict"] && !state.option.validthis && ((funct["(statement)"] && + funct["(name)"].charAt(0) > "Z") || funct["(global)"])) { + warning("W040", x); } + }); + reservevar("true"); + reservevar("undefined"); - if (urls.length > 0) { - data.urls = urls; - } + assignop("=", "assign", 20); + assignop("+=", "assignadd", 20); + assignop("-=", "assignsub", 20); + assignop("*=", "assignmult", 20); + assignop("/=", "assigndiv", 20).nud = function () { + error("E014"); + }; + assignop("%=", "assignmod", 20); - globals = Object.keys(scope); - if (globals.length > 0) { - data.globals = globals; + bitwiseassignop("&=", "assignbitand", 20); + bitwiseassignop("|=", "assignbitor", 20); + bitwiseassignop("^=", "assignbitxor", 20); + bitwiseassignop("<<=", "assignshiftleft", 20); + bitwiseassignop(">>=", "assignshiftright", 20); + bitwiseassignop(">>>=", "assignshiftrightunsigned", 20); + infix(",", function (left, that) { + var expr; + that.exprs = [left]; + if (!comma({peek: true})) { + return that; } - - for (i = 1; i < functions.length; i += 1) { - f = functions[i]; - fu = {}; - - for (j = 0; j < functionicity.length; j += 1) { - fu[functionicity[j]] = []; - } - - for (j = 0; j < functionicity.length; j += 1) { - if (fu[functionicity[j]].length === 0) { - delete fu[functionicity[j]]; - } + while (true) { + if (!(expr = expression(10))) { + break; } - - fu.name = f["(name)"]; - fu.param = f["(params)"]; - fu.line = f["(line)"]; - fu.character = f["(character)"]; - fu.last = f["(last)"]; - fu.lastcharacter = f["(lastcharacter)"]; - data.functions.push(fu); - } - - if (unuseds.length > 0) { - data.unused = unuseds; - } - - members = []; - for (n in member) { - if (typeof member[n] === "number") { - data.member = member; + that.exprs.push(expr); + if (state.tokens.next.value !== "," || !comma()) { break; } } + return that; + }, 10, true); - return data; - }; + infix("?", function (left, that) { + increaseComplexityCount(); + that.left = left; + that.right = expression(10); + advance(":"); + that["else"] = expression(10); + return that; + }, 30); - itself.jshint = itself; + var orPrecendence = 40; + infix("||", function (left, that) { + increaseComplexityCount(); + that.left = left; + that.right = expression(orPrecendence); + return that; + }, orPrecendence); + infix("&&", "and", 50); + bitwise("|", "bitor", 70); + bitwise("^", "bitxor", 80); + bitwise("&", "bitand", 90); + relation("==", function (left, right) { + var eqnull = state.option.eqnull && (left.value === "null" || right.value === "null"); - return itself; -}()); + if (!eqnull && state.option.eqeqeq) + warning("W116", this, "===", "=="); + else if (isPoorRelation(left)) + warning("W041", this, "===", left.value); + else if (isPoorRelation(right)) + warning("W041", this, "===", right.value); -// Make JSHINT a Node module, if possible. -if (typeof exports === "object" && exports) { - exports.JSHINT = JSHINT; -} + return this; + }); + relation("==="); + relation("!=", function (left, right) { + var eqnull = state.option.eqnull && + (left.value === "null" || right.value === "null"); -})() -},{"events":2,"../shared/vars.js":3,"../shared/messages.js":7,"./lex.js":8,"./reg.js":4,"./style.js":5,"./state.js":6,"underscore":9,"console-browserify":10}],9:[function(require,module,exports){ -(function(){// Underscore.js 1.4.4 -// http://underscorejs.org -// (c) 2009-2013 Jeremy Ashkenas, DocumentCloud Inc. -// Underscore may be freely distributed under the MIT license. - -(function() { - - // Baseline setup - // -------------- + if (!eqnull && state.option.eqeqeq) { + warning("W116", this, "!==", "!="); + } else if (isPoorRelation(left)) { + warning("W041", this, "!==", left.value); + } else if (isPoorRelation(right)) { + warning("W041", this, "!==", right.value); + } + return this; + }); + relation("!=="); + relation("<"); + relation(">"); + relation("<="); + relation(">="); + bitwise("<<", "shiftleft", 120); + bitwise(">>", "shiftright", 120); + bitwise(">>>", "shiftrightunsigned", 120); + infix("in", "in", 120); + infix("instanceof", "instanceof", 120); + infix("+", function (left, that) { + var right = expression(130); + if (left && right && left.id === "(string)" && right.id === "(string)") { + left.value += right.value; + left.character = right.character; + if (!state.option.scripturl && reg.javascriptURL.test(left.value)) { + warning("W050", left); + } + return left; + } + that.left = left; + that.right = right; + return that; + }, 130); + prefix("+", "num"); + prefix("+++", function () { + warning("W007"); + this.right = expression(150); + this.arity = "unary"; + return this; + }); + infix("+++", function (left) { + warning("W007"); + this.left = left; + this.right = expression(130); + return this; + }, 130); + infix("-", "sub", 130); + prefix("-", "neg"); + prefix("---", function () { + warning("W006"); + this.right = expression(150); + this.arity = "unary"; + return this; + }); + infix("---", function (left) { + warning("W006"); + this.left = left; + this.right = expression(130); + return this; + }, 130); + infix("*", "mult", 140); + infix("/", "div", 140); + infix("%", "mod", 140); - // Establish the root object, `window` in the browser, or `global` on the server. - var root = this; + suffix("++", "postinc"); + prefix("++", "preinc"); + state.syntax["++"].exps = true; - // Save the previous value of the `_` variable. - var previousUnderscore = root._; + suffix("--", "postdec"); + prefix("--", "predec"); + state.syntax["--"].exps = true; + prefix("delete", function () { + var p = expression(10); + if (!p || (p.id !== "." && p.id !== "[")) { + warning("W051"); + } + this.first = p; + return this; + }).exps = true; - // Establish the object that gets returned to break out of a loop iteration. - var breaker = {}; + prefix("~", function () { + if (state.option.bitwise) { + warning("W052", this, "~"); + } + expression(150); + return this; + }); - // Save bytes in the minified (but not gzipped) version: - var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype; + prefix("...", function () { + if (!state.option.inESNext()) { + warning("W104", this, "spread/rest operator"); + } + if (!state.tokens.next.identifier) { + error("E030", state.tokens.next, state.tokens.next.value); + } + expression(150); + return this; + }); - // Create quick reference variables for speed access to core prototypes. - var push = ArrayProto.push, - slice = ArrayProto.slice, - concat = ArrayProto.concat, - toString = ObjProto.toString, - hasOwnProperty = ObjProto.hasOwnProperty; + prefix("!", function () { + this.right = expression(150); + this.arity = "unary"; - // All **ECMAScript 5** native function implementations that we hope to use - // are declared here. - var - nativeForEach = ArrayProto.forEach, - nativeMap = ArrayProto.map, - nativeReduce = ArrayProto.reduce, - nativeReduceRight = ArrayProto.reduceRight, - nativeFilter = ArrayProto.filter, - nativeEvery = ArrayProto.every, - nativeSome = ArrayProto.some, - nativeIndexOf = ArrayProto.indexOf, - nativeLastIndexOf = ArrayProto.lastIndexOf, - nativeIsArray = Array.isArray, - nativeKeys = Object.keys, - nativeBind = FuncProto.bind; + if (!this.right) { // '!' followed by nothing? Give up. + quit("E041", this.line || 0); + } - // Create a safe reference to the Underscore object for use below. - var _ = function(obj) { - if (obj instanceof _) return obj; - if (!(this instanceof _)) return new _(obj); - this._wrapped = obj; - }; + if (bang[this.right.id] === true) { + warning("W018", this, "!"); + } + return this; + }); - // Export the Underscore object for **Node.js**, with - // backwards-compatibility for the old `require()` API. If we're in - // the browser, add `_` as a global object via a string identifier, - // for Closure Compiler "advanced" mode. - if (typeof exports !== 'undefined') { - if (typeof module !== 'undefined' && module.exports) { - exports = module.exports = _; - } - exports._ = _; - } else { - root._ = _; - } + prefix("typeof", "typeof"); + prefix("new", function () { + var c = expression(155), i; + if (c && c.id !== "function") { + if (c.identifier) { + c["new"] = true; + switch (c.value) { + case "Number": + case "String": + case "Boolean": + case "Math": + case "JSON": + warning("W053", state.tokens.prev, c.value); + break; + case "Function": + if (!state.option.evil) { + warning("W054"); + } + break; + case "Date": + case "RegExp": + break; + default: + if (c.id !== "function") { + i = c.value.substr(0, 1); + if (state.option.newcap && (i < "A" || i > "Z") && !_.has(global, c.value)) { + warning("W055", state.tokens.curr); + } + } + } + } else { + if (c.id !== "." && c.id !== "[" && c.id !== "(") { + warning("W056", state.tokens.curr); + } + } + } else { + if (!state.option.supernew) + warning("W057", this); + } + adjacent(state.tokens.curr, state.tokens.next); + if (state.tokens.next.id !== "(" && !state.option.supernew) { + warning("W058", state.tokens.curr, state.tokens.curr.value); + } + this.first = c; + return this; + }); + state.syntax["new"].exps = true; - // Current version. - _.VERSION = '1.4.4'; + prefix("void").exps = true; - // Collection Functions - // -------------------- + infix(".", function (left, that) { + adjacent(state.tokens.prev, state.tokens.curr); + nobreak(); + var m = identifier(false, true); - // The cornerstone, an `each` implementation, aka `forEach`. - // Handles objects with the built-in `forEach`, arrays, and raw objects. - // Delegates to **ECMAScript 5**'s native `forEach` if available. - var each = _.each = _.forEach = function(obj, iterator, context) { - if (obj == null) return; - if (nativeForEach && obj.forEach === nativeForEach) { - obj.forEach(iterator, context); - } else if (obj.length === +obj.length) { - for (var i = 0, l = obj.length; i < l; i++) { - if (iterator.call(context, obj[i], i, obj) === breaker) return; - } - } else { - for (var key in obj) { - if (_.has(obj, key)) { - if (iterator.call(context, obj[key], key, obj) === breaker) return; - } - } - } - }; + if (typeof m === "string") { + countMember(m); + } - // Return the results of applying the iterator to each element. - // Delegates to **ECMAScript 5**'s native `map` if available. - _.map = _.collect = function(obj, iterator, context) { - var results = []; - if (obj == null) return results; - if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context); - each(obj, function(value, index, list) { - results[results.length] = iterator.call(context, value, index, list); - }); - return results; - }; + that.left = left; + that.right = m; - var reduceError = 'Reduce of empty array with no initial value'; + if (m && m === "hasOwnProperty" && state.tokens.next.value === "=") { + warning("W001"); + } - // **Reduce** builds up a single result from a list of values, aka `inject`, - // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available. - _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) { - var initial = arguments.length > 2; - if (obj == null) obj = []; - if (nativeReduce && obj.reduce === nativeReduce) { - if (context) iterator = _.bind(iterator, context); - return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator); - } - each(obj, function(value, index, list) { - if (!initial) { - memo = value; - initial = true; - } else { - memo = iterator.call(context, memo, value, index, list); - } - }); - if (!initial) throw new TypeError(reduceError); - return memo; - }; + if (left && left.value === "arguments" && (m === "callee" || m === "caller")) { + if (state.option.noarg) + warning("W059", left, m); + else if (state.directive["use strict"]) + error("E008"); + } else if (!state.option.evil && left && left.value === "document" && + (m === "write" || m === "writeln")) { + warning("W060", left); + } - // The right-associative version of reduce, also known as `foldr`. - // Delegates to **ECMAScript 5**'s native `reduceRight` if available. - _.reduceRight = _.foldr = function(obj, iterator, memo, context) { - var initial = arguments.length > 2; - if (obj == null) obj = []; - if (nativeReduceRight && obj.reduceRight === nativeReduceRight) { - if (context) iterator = _.bind(iterator, context); - return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator); - } - var length = obj.length; - if (length !== +length) { - var keys = _.keys(obj); - length = keys.length; - } - each(obj, function(value, index, list) { - index = keys ? keys[--length] : --length; - if (!initial) { - memo = obj[index]; - initial = true; - } else { - memo = iterator.call(context, memo, obj[index], index, list); - } - }); - if (!initial) throw new TypeError(reduceError); - return memo; - }; + if (!state.option.evil && (m === "eval" || m === "execScript")) { + warning("W061"); + } - // Return the first value which passes a truth test. Aliased as `detect`. - _.find = _.detect = function(obj, iterator, context) { - var result; - any(obj, function(value, index, list) { - if (iterator.call(context, value, index, list)) { - result = value; - return true; - } - }); - return result; - }; + return that; + }, 160, true); - // Return all the elements that pass a truth test. - // Delegates to **ECMAScript 5**'s native `filter` if available. - // Aliased as `select`. - _.filter = _.select = function(obj, iterator, context) { - var results = []; - if (obj == null) return results; - if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context); - each(obj, function(value, index, list) { - if (iterator.call(context, value, index, list)) results[results.length] = value; - }); - return results; - }; + infix("(", function (left, that) { + if (state.tokens.prev.id !== "}" && state.tokens.prev.id !== ")") { + nobreak(state.tokens.prev, state.tokens.curr); + } - // Return all the elements for which a truth test fails. - _.reject = function(obj, iterator, context) { - return _.filter(obj, function(value, index, list) { - return !iterator.call(context, value, index, list); - }, context); - }; + nospace(); + if (state.option.immed && left && !left.immed && left.id === "function") { + warning("W062"); + } - // Determine whether all of the elements match a truth test. - // Delegates to **ECMAScript 5**'s native `every` if available. - // Aliased as `all`. - _.every = _.all = function(obj, iterator, context) { - iterator || (iterator = _.identity); - var result = true; - if (obj == null) return result; - if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context); - each(obj, function(value, index, list) { - if (!(result = result && iterator.call(context, value, index, list))) return breaker; - }); - return !!result; - }; + var n = 0; + var p = []; - // Determine if at least one element in the object matches a truth test. - // Delegates to **ECMAScript 5**'s native `some` if available. - // Aliased as `any`. - var any = _.some = _.any = function(obj, iterator, context) { - iterator || (iterator = _.identity); - var result = false; - if (obj == null) return result; - if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context); - each(obj, function(value, index, list) { - if (result || (result = iterator.call(context, value, index, list))) return breaker; - }); - return !!result; - }; + if (left) { + if (left.type === "(identifier)") { + if (left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)) { + if ("Number String Boolean Date Object".indexOf(left.value) === -1) { + if (left.value === "Math") { + warning("W063", left); + } else if (state.option.newcap) { + warning("W064", left); + } + } + } + } + } - // Determine if the array or object contains a given value (using `===`). - // Aliased as `include`. - _.contains = _.include = function(obj, target) { - if (obj == null) return false; - if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1; - return any(obj, function(value) { - return value === target; - }); - }; + if (state.tokens.next.id !== ")") { + for (;;) { + p[p.length] = expression(10); + n += 1; + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + } - // Invoke a method (with arguments) on every item in a collection. - _.invoke = function(obj, method) { - var args = slice.call(arguments, 2); - var isFunc = _.isFunction(method); - return _.map(obj, function(value) { - return (isFunc ? method : value[method]).apply(value, args); - }); - }; + advance(")"); + nospace(state.tokens.prev, state.tokens.curr); - // Convenience version of a common use case of `map`: fetching a property. - _.pluck = function(obj, key) { - return _.map(obj, function(value){ return value[key]; }); - }; + if (typeof left === "object") { + if (left.value === "parseInt" && n === 1) { + warning("W065", state.tokens.curr); + } + if (!state.option.evil) { + if (left.value === "eval" || left.value === "Function" || + left.value === "execScript") { + warning("W061", left); - // Convenience version of a common use case of `filter`: selecting only objects - // containing specific `key:value` pairs. - _.where = function(obj, attrs, first) { - if (_.isEmpty(attrs)) return first ? null : []; - return _[first ? 'find' : 'filter'](obj, function(value) { - for (var key in attrs) { - if (attrs[key] !== value[key]) return false; - } - return true; - }); - }; + if (p[0] && [0].id === "(string)") { + addInternalSrc(left, p[0].value); + } + } else if (p[0] && p[0].id === "(string)" && + (left.value === "setTimeout" || + left.value === "setInterval")) { + warning("W066", left); + addInternalSrc(left, p[0].value); - // Convenience version of a common use case of `find`: getting the first object - // containing specific `key:value` pairs. - _.findWhere = function(obj, attrs) { - return _.where(obj, attrs, true); - }; + // window.setTimeout/setInterval + } else if (p[0] && p[0].id === "(string)" && + left.value === "." && + left.left.value === "window" && + (left.right === "setTimeout" || + left.right === "setInterval")) { + warning("W066", left); + addInternalSrc(left, p[0].value); + } + } + if (!left.identifier && left.id !== "." && left.id !== "[" && + left.id !== "(" && left.id !== "&&" && left.id !== "||" && + left.id !== "?") { + warning("W067", left); + } + } - // Return the maximum element or (element-based computation). - // Can't optimize arrays of integers longer than 65,535 elements. - // See: https://bugs.webkit.org/show_bug.cgi?id=80797 - _.max = function(obj, iterator, context) { - if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) { - return Math.max.apply(Math, obj); - } - if (!iterator && _.isEmpty(obj)) return -Infinity; - var result = {computed : -Infinity, value: -Infinity}; - each(obj, function(value, index, list) { - var computed = iterator ? iterator.call(context, value, index, list) : value; - computed >= result.computed && (result = {value : value, computed : computed}); - }); - return result.value; - }; + that.left = left; + return that; + }, 155, true).exps = true; - // Return the minimum element (or element-based computation). - _.min = function(obj, iterator, context) { - if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) { - return Math.min.apply(Math, obj); - } - if (!iterator && _.isEmpty(obj)) return Infinity; - var result = {computed : Infinity, value: Infinity}; - each(obj, function(value, index, list) { - var computed = iterator ? iterator.call(context, value, index, list) : value; - computed < result.computed && (result = {value : value, computed : computed}); - }); - return result.value; - }; + prefix("(", function () { + nospace(); + var bracket, brackets = []; + var pn, pn1, i = 0; + var ret; - // Shuffle an array. - _.shuffle = function(obj) { - var rand; - var index = 0; - var shuffled = []; - each(obj, function(value) { - rand = _.random(index++); - shuffled[index - 1] = shuffled[rand]; - shuffled[rand] = value; - }); - return shuffled; - }; - - // An internal function to generate lookup iterators. - var lookupIterator = function(value) { - return _.isFunction(value) ? value : function(obj){ return obj[value]; }; - }; + do { + pn = peek(i); + i += 1; + pn1 = peek(i); + i += 1; + } while (pn.value !== ")" && pn1.value !== "=>" && pn1.value !== ";" && pn1.type !== "(end)"); - // Sort the object's values by a criterion produced by an iterator. - _.sortBy = function(obj, value, context) { - var iterator = lookupIterator(value); - return _.pluck(_.map(obj, function(value, index, list) { - return { - value : value, - index : index, - criteria : iterator.call(context, value, index, list) - }; - }).sort(function(left, right) { - var a = left.criteria; - var b = right.criteria; - if (a !== b) { - if (a > b || a === void 0) return 1; - if (a < b || b === void 0) return -1; - } - return left.index < right.index ? -1 : 1; - }), 'value'); - }; + if (state.tokens.next.id === "function") { + state.tokens.next.immed = true; + } - // An internal function used for aggregate "group by" operations. - var group = function(obj, value, context, behavior) { - var result = {}; - var iterator = lookupIterator(value || _.identity); - each(obj, function(value, index) { - var key = iterator.call(context, value, index, obj); - behavior(result, key, value); - }); - return result; - }; + var exprs = []; - // Groups the object's values by a criterion. Pass either a string attribute - // to group by, or a function that returns the criterion. - _.groupBy = function(obj, value, context) { - return group(obj, value, context, function(result, key, value) { - (_.has(result, key) ? result[key] : (result[key] = [])).push(value); - }); - }; + if (state.tokens.next.id !== ")") { + for (;;) { + if (pn1.value === "=>" && state.tokens.next.value === "{") { + bracket = state.tokens.next; + bracket.left = destructuringExpression(); + brackets.push(bracket); + for (var t in bracket.left) { + exprs.push(bracket.left[t].token); + } + } else { + exprs.push(expression(10)); + } + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + } - // Counts instances of an object that group by a certain criterion. Pass - // either a string attribute to count by, or a function that returns the - // criterion. - _.countBy = function(obj, value, context) { - return group(obj, value, context, function(result, key) { - if (!_.has(result, key)) result[key] = 0; - result[key]++; - }); - }; + advance(")", this); + nospace(state.tokens.prev, state.tokens.curr); + if (state.option.immed && exprs[0] && exprs[0].id === "function") { + if (state.tokens.next.id !== "(" && + (state.tokens.next.id !== "." || (peek().value !== "call" && peek().value !== "apply"))) { + warning("W068", this); + } + } - // Use a comparator function to figure out the smallest index at which - // an object should be inserted so as to maintain order. Uses binary search. - _.sortedIndex = function(array, obj, iterator, context) { - iterator = iterator == null ? _.identity : lookupIterator(iterator); - var value = iterator.call(context, obj); - var low = 0, high = array.length; - while (low < high) { - var mid = (low + high) >>> 1; - iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid; - } - return low; - }; + if (state.tokens.next.value === "=>") { + return exprs; + } + if (!exprs.length) { + return; + } + if (exprs.length > 1) { + ret = Object.create(state.syntax[","]); + ret.exprs = exprs; + } else { + ret = exprs[0]; + } + if (ret) { + ret.paren = true; + } + return ret; + }); - // Safely convert anything iterable into a real, live array. - _.toArray = function(obj) { - if (!obj) return []; - if (_.isArray(obj)) return slice.call(obj); - if (obj.length === +obj.length) return _.map(obj, _.identity); - return _.values(obj); - }; + application("=>"); - // Return the number of elements in an object. - _.size = function(obj) { - if (obj == null) return 0; - return (obj.length === +obj.length) ? obj.length : _.keys(obj).length; - }; + infix("[", function (left, that) { + nobreak(state.tokens.prev, state.tokens.curr); + nospace(); + var e = expression(10), s; + if (e && e.type === "(string)") { + if (!state.option.evil && (e.value === "eval" || e.value === "execScript")) { + warning("W061", that); + } - // Array Functions - // --------------- + countMember(e.value); + if (!state.option.sub && reg.identifier.test(e.value)) { + s = state.syntax[e.value]; + if (!s || !isReserved(s)) { + warning("W069", state.tokens.prev, e.value); + } + } + } + advance("]", that); - // Get the first element of an array. Passing **n** will return the first N - // values in the array. Aliased as `head` and `take`. The **guard** check - // allows it to work with `_.map`. - _.first = _.head = _.take = function(array, n, guard) { - if (array == null) return void 0; - return (n != null) && !guard ? slice.call(array, 0, n) : array[0]; - }; + if (e && e.value === "hasOwnProperty" && state.tokens.next.value === "=") { + warning("W001"); + } - // Returns everything but the last entry of the array. Especially useful on - // the arguments object. Passing **n** will return all the values in - // the array, excluding the last N. The **guard** check allows it to work with - // `_.map`. - _.initial = function(array, n, guard) { - return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n)); - }; + nospace(state.tokens.prev, state.tokens.curr); + that.left = left; + that.right = e; + return that; + }, 160, true); - // Get the last element of an array. Passing **n** will return the last N - // values in the array. The **guard** check allows it to work with `_.map`. - _.last = function(array, n, guard) { - if (array == null) return void 0; - if ((n != null) && !guard) { - return slice.call(array, Math.max(array.length - n, 0)); - } else { - return array[array.length - 1]; - } - }; + function comprehensiveArrayExpression() { + var res = {}; + res.exps = true; + funct["(comparray)"].stack(); - // Returns everything but the first entry of the array. Aliased as `tail` and `drop`. - // Especially useful on the arguments object. Passing an **n** will return - // the rest N values in the array. The **guard** - // check allows it to work with `_.map`. - _.rest = _.tail = _.drop = function(array, n, guard) { - return slice.call(array, (n == null) || guard ? 1 : n); - }; + // Handle reversed for expressions, used in spidermonkey + var reversed = false; + if (state.tokens.next.value !== "for") { + reversed = true; + if (!state.option.inMoz(true)) { + warning("W116", state.tokens.next, "for", state.tokens.next.value); + } + funct["(comparray)"].setState("use"); + res.right = expression(10); + } - // Trim out all falsy values from an array. - _.compact = function(array) { - return _.filter(array, _.identity); - }; + advance("for"); + if (state.tokens.next.value === "each") { + advance("each"); + if (!state.option.inMoz(true)) { + warning("W118", state.tokens.curr, "for each"); + } + } + advance("("); + funct["(comparray)"].setState("define"); + res.left = expression(130); + if (_.contains(["in", "of"], state.tokens.next.value)) { + advance(); + } else { + error("E045", state.tokens.curr); + } + funct["(comparray)"].setState("generate"); + expression(10); - // Internal implementation of a recursive `flatten` function. - var flatten = function(input, shallow, output) { - each(input, function(value) { - if (_.isArray(value)) { - shallow ? push.apply(output, value) : flatten(value, shallow, output); - } else { - output.push(value); - } - }); - return output; - }; + advance(")"); + if (state.tokens.next.value === "if") { + advance("if"); + advance("("); + funct["(comparray)"].setState("filter"); + res.filter = expression(10); + advance(")"); + } - // Return a completely flattened version of an array. - _.flatten = function(array, shallow) { - return flatten(array, shallow, []); - }; + if (!reversed) { + funct["(comparray)"].setState("use"); + res.right = expression(10); + } - // Return a version of the array that does not contain the specified value(s). - _.without = function(array) { - return _.difference(array, slice.call(arguments, 1)); - }; + advance("]"); + funct["(comparray)"].unstack(); + return res; + } - // Produce a duplicate-free version of the array. If the array has already - // been sorted, you have the option of using a faster algorithm. - // Aliased as `unique`. - _.uniq = _.unique = function(array, isSorted, iterator, context) { - if (_.isFunction(isSorted)) { - context = iterator; - iterator = isSorted; - isSorted = false; - } - var initial = iterator ? _.map(array, iterator, context) : array; - var results = []; - var seen = []; - each(initial, function(value, index) { - if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) { - seen.push(value); - results.push(array[index]); - } - }); - return results; - }; - - // Produce an array that contains the union: each distinct element from all of - // the passed-in arrays. - _.union = function() { - return _.uniq(concat.apply(ArrayProto, arguments)); - }; - - // Produce an array that contains every item shared between all the - // passed-in arrays. - _.intersection = function(array) { - var rest = slice.call(arguments, 1); - return _.filter(_.uniq(array), function(item) { - return _.every(rest, function(other) { - return _.indexOf(other, item) >= 0; - }); - }); - }; + prefix("[", function () { + var blocktype = lookupBlockType(true); + if (blocktype.isCompArray) { + if (!state.option.inESNext()) { + warning("W119", state.tokens.curr, "array comprehension"); + } + return comprehensiveArrayExpression(); + } else if (blocktype.isDestAssign && !state.option.inESNext()) { + warning("W104", state.tokens.curr, "destructuring assignment"); + } + var b = state.tokens.curr.line !== state.tokens.next.line; + this.first = []; + if (b) { + indent += state.option.indent; + if (state.tokens.next.from === indent + state.option.indent) { + indent += state.option.indent; + } + } + while (state.tokens.next.id !== "(end)") { + while (state.tokens.next.id === ",") { + if (!state.option.inES5()) + warning("W070"); + advance(","); + } + if (state.tokens.next.id === "]") { + break; + } + if (b && state.tokens.curr.line !== state.tokens.next.line) { + indentation(); + } + this.first.push(expression(10)); + if (state.tokens.next.id === ",") { + comma({ allowTrailing: true }); + if (state.tokens.next.id === "]" && !state.option.inES5(true)) { + warning("W070", state.tokens.curr); + break; + } + } else { + break; + } + } + if (b) { + indent -= state.option.indent; + indentation(); + } + advance("]", this); + return this; + }, 160); - // Take the difference between one array and a number of other arrays. - // Only the elements present in just the first array will remain. - _.difference = function(array) { - var rest = concat.apply(ArrayProto, slice.call(arguments, 1)); - return _.filter(array, function(value){ return !_.contains(rest, value); }); - }; - // Zip together multiple lists into a single array -- elements that share - // an index go together. - _.zip = function() { - var args = slice.call(arguments); - var length = _.max(_.pluck(args, 'length')); - var results = new Array(length); - for (var i = 0; i < length; i++) { - results[i] = _.pluck(args, "" + i); - } - return results; - }; + function property_name() { + var id = optionalidentifier(false, true); - // Converts lists into objects. Pass either a single array of `[key, value]` - // pairs, or two parallel arrays of the same length -- one of keys, and one of - // the corresponding values. - _.object = function(list, values) { - if (list == null) return {}; - var result = {}; - for (var i = 0, l = list.length; i < l; i++) { - if (values) { - result[list[i]] = values[i]; - } else { - result[list[i][0]] = list[i][1]; - } - } - return result; - }; + if (!id) { + if (state.tokens.next.id === "(string)") { + id = state.tokens.next.value; + advance(); + } else if (state.tokens.next.id === "(number)") { + id = state.tokens.next.value.toString(); + advance(); + } + } - // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**), - // we need this function. Return the position of the first occurrence of an - // item in an array, or -1 if the item is not included in the array. - // Delegates to **ECMAScript 5**'s native `indexOf` if available. - // If the array is large and already in sort order, pass `true` - // for **isSorted** to use binary search. - _.indexOf = function(array, item, isSorted) { - if (array == null) return -1; - var i = 0, l = array.length; - if (isSorted) { - if (typeof isSorted == 'number') { - i = (isSorted < 0 ? Math.max(0, l + isSorted) : isSorted); - } else { - i = _.sortedIndex(array, item); - return array[i] === item ? i : -1; - } - } - if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted); - for (; i < l; i++) if (array[i] === item) return i; - return -1; - }; + if (id === "hasOwnProperty") { + warning("W001"); + } - // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available. - _.lastIndexOf = function(array, item, from) { - if (array == null) return -1; - var hasIndex = from != null; - if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) { - return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item); - } - var i = (hasIndex ? from : array.length); - while (i--) if (array[i] === item) return i; - return -1; - }; + return id; + } - // Generate an integer Array containing an arithmetic progression. A port of - // the native Python `range()` function. See - // [the Python documentation](http://docs.python.org/library/functions.html#range). - _.range = function(start, stop, step) { - if (arguments.length <= 1) { - stop = start || 0; - start = 0; - } - step = arguments[2] || 1; - var len = Math.max(Math.ceil((stop - start) / step), 0); - var idx = 0; - var range = new Array(len); + function functionparams(parsed) { + var curr, next; + var params = []; + var ident; + var tokens = []; + var t; + var pastDefault = false; - while(idx < len) { - range[idx++] = start; - start += step; - } + if (parsed) { + if (parsed instanceof Array) { + for (var i in parsed) { + curr = parsed[i]; + if (_.contains(["{", "["], curr.id)) { + for (t in curr.left) { + t = tokens[t]; + if (t.id) { + params.push(t.id); + addlabel(t.id, "unused", t.token); + } + } + } else if (curr.value === "...") { + if (!state.option.inESNext()) { + warning("W104", curr, "spread/rest operator"); + } + continue; + } else { + addlabel(curr.value, "unused", curr); + } + } + return params; + } else { + if (parsed.identifier === true) { + addlabel(parsed.value, "unused", parsed); + return [parsed]; + } + } + } - return range; - }; + next = state.tokens.next; - // Function (ahem) Functions - // ------------------ + advance("("); + nospace(); - // Create a function bound to a given object (assigning `this`, and arguments, - // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if - // available. - _.bind = function(func, context) { - if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1)); - var args = slice.call(arguments, 2); - return function() { - return func.apply(context, args.concat(slice.call(arguments))); - }; - }; + if (state.tokens.next.id === ")") { + advance(")"); + return; + } - // Partially apply a function by creating a version that has had some of its - // arguments pre-filled, without changing its dynamic `this` context. - _.partial = function(func) { - var args = slice.call(arguments, 1); - return function() { - return func.apply(this, args.concat(slice.call(arguments))); - }; - }; + for (;;) { + if (_.contains(["{", "["], state.tokens.next.id)) { + tokens = destructuringExpression(); + for (t in tokens) { + t = tokens[t]; + if (t.id) { + params.push(t.id); + addlabel(t.id, "unused", t.token); + } + } + } else if (state.tokens.next.value === "...") { + if (!state.option.inESNext()) { + warning("W104", state.tokens.next, "spread/rest operator"); + } + advance("..."); + nospace(); + ident = identifier(true); + params.push(ident); + addlabel(ident, "unused", state.tokens.curr); + } else { + ident = identifier(true); + params.push(ident); + addlabel(ident, "unused", state.tokens.curr); + } - // Bind all of an object's methods to that object. Useful for ensuring that - // all callbacks defined on an object belong to it. - _.bindAll = function(obj) { - var funcs = slice.call(arguments, 1); - if (funcs.length === 0) funcs = _.functions(obj); - each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); }); - return obj; - }; + // it is a syntax error to have a regular argument after a default argument + if (pastDefault) { + if (state.tokens.next.id !== "=") { + error("E051", state.tokens.current); + } + } + if (state.tokens.next.id === "=") { + if (!state.option.inESNext()) { + warning("W119", state.tokens.next, "default parameters"); + } + advance("="); + pastDefault = true; + expression(10); + } + if (state.tokens.next.id === ",") { + comma(); + } else { + advance(")", next); + nospace(state.tokens.prev, state.tokens.curr); + return params; + } + } + } - // Memoize an expensive function by storing its results. - _.memoize = function(func, hasher) { - var memo = {}; - hasher || (hasher = _.identity); - return function() { - var key = hasher.apply(this, arguments); - return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments)); - }; - }; - // Delays a function for the given number of milliseconds, and then calls - // it with the arguments supplied. - _.delay = function(func, wait) { - var args = slice.call(arguments, 2); - return setTimeout(function(){ return func.apply(null, args); }, wait); - }; + function doFunction(name, statement, generator, fatarrowparams) { + var f; + var oldOption = state.option; + var oldIgnored = state.ignored; + var oldScope = scope; - // Defers a function, scheduling it to run after the current call stack has - // cleared. - _.defer = function(func) { - return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1))); - }; + state.option = Object.create(state.option); + state.ignored = Object.create(state.ignored); + scope = Object.create(scope); - // Returns a function, that, when invoked, will only be triggered at most once - // during a given window of time. - _.throttle = function(func, wait) { - var context, args, timeout, result; - var previous = 0; - var later = function() { - previous = new Date; - timeout = null; - result = func.apply(context, args); - }; - return function() { - var now = new Date; - var remaining = wait - (now - previous); - context = this; - args = arguments; - if (remaining <= 0) { - clearTimeout(timeout); - timeout = null; - previous = now; - result = func.apply(context, args); - } else if (!timeout) { - timeout = setTimeout(later, remaining); - } - return result; - }; - }; + funct = { + "(name)" : name || "\"" + anonname + "\"", + "(line)" : state.tokens.next.line, + "(character)" : state.tokens.next.character, + "(context)" : funct, + "(breakage)" : 0, + "(loopage)" : 0, + "(metrics)" : createMetrics(state.tokens.next), + "(scope)" : scope, + "(statement)" : statement, + "(tokens)" : {}, + "(blockscope)": funct["(blockscope)"], + "(comparray)" : funct["(comparray)"] + }; - // Returns a function, that, as long as it continues to be invoked, will not - // be triggered. The function will be called after it stops being called for - // N milliseconds. If `immediate` is passed, trigger the function on the - // leading edge, instead of the trailing. - _.debounce = function(func, wait, immediate) { - var timeout, result; - return function() { - var context = this, args = arguments; - var later = function() { - timeout = null; - if (!immediate) result = func.apply(context, args); - }; - var callNow = immediate && !timeout; - clearTimeout(timeout); - timeout = setTimeout(later, wait); - if (callNow) result = func.apply(context, args); - return result; - }; - }; + if (generator) { + funct["(generator)"] = true; + } - // Returns a function that will be executed at most one time, no matter how - // often you call it. Useful for lazy initialization. - _.once = function(func) { - var ran = false, memo; - return function() { - if (ran) return memo; - ran = true; - memo = func.apply(this, arguments); - func = null; - return memo; - }; - }; + f = funct; + state.tokens.curr.funct = funct; - // Returns the first function passed as an argument to the second, - // allowing you to adjust arguments, run code before and after, and - // conditionally execute the original function. - _.wrap = function(func, wrapper) { - return function() { - var args = [func]; - push.apply(args, arguments); - return wrapper.apply(this, args); - }; - }; + functions.push(funct); - // Returns a function that is the composition of a list of functions, each - // consuming the return value of the function that follows. - _.compose = function() { - var funcs = arguments; - return function() { - var args = arguments; - for (var i = funcs.length - 1; i >= 0; i--) { - args = [funcs[i].apply(this, args)]; - } - return args[0]; - }; - }; + if (name) { + addlabel(name, "function"); + } - // Returns a function that will only be executed after being called N times. - _.after = function(times, func) { - if (times <= 0) return func(); - return function() { - if (--times < 1) { - return func.apply(this, arguments); - } - }; - }; + funct["(params)"] = functionparams(fatarrowparams); - // Object Functions - // ---------------- + funct["(metrics)"].verifyMaxParametersPerFunction(funct["(params)"]); - // Retrieve the names of an object's properties. - // Delegates to **ECMAScript 5**'s native `Object.keys` - _.keys = nativeKeys || function(obj) { - if (obj !== Object(obj)) throw new TypeError('Invalid object'); - var keys = []; - for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key; - return keys; - }; + block(false, true, true, fatarrowparams ? true:false); - // Retrieve the values of an object's properties. - _.values = function(obj) { - var values = []; - for (var key in obj) if (_.has(obj, key)) values.push(obj[key]); - return values; - }; + if (generator && funct["(generator)"] !== "yielded") { + error("E047", state.tokens.curr); + } - // Convert an object into a list of `[key, value]` pairs. - _.pairs = function(obj) { - var pairs = []; - for (var key in obj) if (_.has(obj, key)) pairs.push([key, obj[key]]); - return pairs; - }; + funct["(metrics)"].verifyMaxStatementsPerFunction(); + funct["(metrics)"].verifyMaxComplexityPerFunction(); + funct["(unusedOption)"] = state.option.unused; - // Invert the keys and values of an object. The values must be serializable. - _.invert = function(obj) { - var result = {}; - for (var key in obj) if (_.has(obj, key)) result[obj[key]] = key; - return result; - }; + scope = oldScope; + state.option = oldOption; + state.ignored = oldIgnored; + funct["(last)"] = state.tokens.curr.line; + funct["(lastcharacter)"] = state.tokens.curr.character; + funct = funct["(context)"]; - // Return a sorted list of the function names available on the object. - // Aliased as `methods` - _.functions = _.methods = function(obj) { - var names = []; - for (var key in obj) { - if (_.isFunction(obj[key])) names.push(key); - } - return names.sort(); - }; + return f; + } - // Extend a given object with all the properties in passed-in object(s). - _.extend = function(obj) { - each(slice.call(arguments, 1), function(source) { - if (source) { - for (var prop in source) { - obj[prop] = source[prop]; - } - } - }); - return obj; - }; + function createMetrics(functionStartToken) { + return { + statementCount: 0, + nestedBlockDepth: -1, + ComplexityCount: 1, + verifyMaxStatementsPerFunction: function () { + if (state.option.maxstatements && + this.statementCount > state.option.maxstatements) { + warning("W071", functionStartToken, this.statementCount); + } + }, - // Return a copy of the object only containing the whitelisted properties. - _.pick = function(obj) { - var copy = {}; - var keys = concat.apply(ArrayProto, slice.call(arguments, 1)); - each(keys, function(key) { - if (key in obj) copy[key] = obj[key]; - }); - return copy; - }; + verifyMaxParametersPerFunction: function (params) { + params = params || []; - // Return a copy of the object without the blacklisted properties. - _.omit = function(obj) { - var copy = {}; - var keys = concat.apply(ArrayProto, slice.call(arguments, 1)); - for (var key in obj) { - if (!_.contains(keys, key)) copy[key] = obj[key]; - } - return copy; - }; + if (state.option.maxparams && params.length > state.option.maxparams) { + warning("W072", functionStartToken, params.length); + } + }, - // Fill in a given object with default properties. - _.defaults = function(obj) { - each(slice.call(arguments, 1), function(source) { - if (source) { - for (var prop in source) { - if (obj[prop] == null) obj[prop] = source[prop]; - } - } - }); - return obj; - }; + verifyMaxNestedBlockDepthPerFunction: function () { + if (state.option.maxdepth && + this.nestedBlockDepth > 0 && + this.nestedBlockDepth === state.option.maxdepth + 1) { + warning("W073", null, this.nestedBlockDepth); + } + }, - // Create a (shallow-cloned) duplicate of an object. - _.clone = function(obj) { - if (!_.isObject(obj)) return obj; - return _.isArray(obj) ? obj.slice() : _.extend({}, obj); - }; + verifyMaxComplexityPerFunction: function () { + var max = state.option.maxcomplexity; + var cc = this.ComplexityCount; + if (max && cc > max) { + warning("W074", functionStartToken, cc); + } + } + }; + } - // Invokes interceptor with the obj, and then returns obj. - // The primary purpose of this method is to "tap into" a method chain, in - // order to perform operations on intermediate results within the chain. - _.tap = function(obj, interceptor) { - interceptor(obj); - return obj; - }; + function increaseComplexityCount() { + funct["(metrics)"].ComplexityCount += 1; + } - // Internal recursive comparison function for `isEqual`. - var eq = function(a, b, aStack, bStack) { - // Identical objects are equal. `0 === -0`, but they aren't identical. - // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal. - if (a === b) return a !== 0 || 1 / a == 1 / b; - // A strict comparison is necessary because `null == undefined`. - if (a == null || b == null) return a === b; - // Unwrap any wrapped objects. - if (a instanceof _) a = a._wrapped; - if (b instanceof _) b = b._wrapped; - // Compare `[[Class]]` names. - var className = toString.call(a); - if (className != toString.call(b)) return false; - switch (className) { - // Strings, numbers, dates, and booleans are compared by value. - case '[object String]': - // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is - // equivalent to `new String("5")`. - return a == String(b); - case '[object Number]': - // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for - // other numeric values. - return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b); - case '[object Date]': - case '[object Boolean]': - // Coerce dates and booleans to numeric primitive values. Dates are compared by their - // millisecond representations. Note that invalid dates with millisecond representations - // of `NaN` are not equivalent. - return +a == +b; - // RegExps are compared by their source patterns and flags. - case '[object RegExp]': - return a.source == b.source && - a.global == b.global && - a.multiline == b.multiline && - a.ignoreCase == b.ignoreCase; - } - if (typeof a != 'object' || typeof b != 'object') return false; - // Assume equality for cyclic structures. The algorithm for detecting cyclic - // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`. - var length = aStack.length; - while (length--) { - // Linear search. Performance is inversely proportional to the number of - // unique nested structures. - if (aStack[length] == a) return bStack[length] == b; - } - // Add the first object to the stack of traversed objects. - aStack.push(a); - bStack.push(b); - var size = 0, result = true; - // Recursively compare objects and arrays. - if (className == '[object Array]') { - // Compare array lengths to determine if a deep comparison is necessary. - size = a.length; - result = size == b.length; - if (result) { - // Deep compare the contents, ignoring non-numeric properties. - while (size--) { - if (!(result = eq(a[size], b[size], aStack, bStack))) break; - } - } - } else { - // Objects with different constructors are not equivalent, but `Object`s - // from different frames are. - var aCtor = a.constructor, bCtor = b.constructor; - if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) && - _.isFunction(bCtor) && (bCtor instanceof bCtor))) { - return false; - } - // Deep compare objects. - for (var key in a) { - if (_.has(a, key)) { - // Count the expected number of properties. - size++; - // Deep compare each member. - if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break; - } - } - // Ensure that both objects contain the same number of properties. - if (result) { - for (key in b) { - if (_.has(b, key) && !(size--)) break; - } - result = !size; - } - } - // Remove the first object from the stack of traversed objects. - aStack.pop(); - bStack.pop(); - return result; - }; + // Parse assignments that were found instead of conditionals. + // For example: if (a = 1) { ... } - // Perform a deep comparison to check if two objects are equal. - _.isEqual = function(a, b) { - return eq(a, b, [], []); - }; + function checkCondAssignment(expr) { + var id, paren; + if (expr) { + id = expr.id; + paren = expr.paren; + if (id === "," && (expr = expr.exprs[expr.exprs.length - 1])) { + id = expr.id; + paren = paren || expr.paren; + } + } + switch (id) { + case "=": + case "+=": + case "-=": + case "*=": + case "%=": + case "&=": + case "|=": + case "^=": + case "/=": + if (!paren && !state.option.boss) { + warning("W084"); + } + } + } - // Is a given array, string, or object empty? - // An "empty" object has no enumerable own-properties. - _.isEmpty = function(obj) { - if (obj == null) return true; - if (_.isArray(obj) || _.isString(obj)) return obj.length === 0; - for (var key in obj) if (_.has(obj, key)) return false; - return true; - }; - // Is a given value a DOM element? - _.isElement = function(obj) { - return !!(obj && obj.nodeType === 1); - }; + (function (x) { + x.nud = function (isclassdef) { + var b, f, i, p, t, g; + var props = {}; // All properties, including accessors + var tag = ""; - // Is a given value an array? - // Delegates to ECMA5's native Array.isArray - _.isArray = nativeIsArray || function(obj) { - return toString.call(obj) == '[object Array]'; - }; + function saveProperty(name, tkn) { + if (props[name] && _.has(props, name)) + warning("W075", state.tokens.next, i); + else + props[name] = {}; - // Is a given variable an object? - _.isObject = function(obj) { - return obj === Object(obj); - }; + props[name].basic = true; + props[name].basictkn = tkn; + } - // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp. - each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) { - _['is' + name] = function(obj) { - return toString.call(obj) == '[object ' + name + ']'; - }; - }); + function saveSetter(name, tkn) { + if (props[name] && _.has(props, name)) { + if (props[name].basic || props[name].setter) + warning("W075", state.tokens.next, i); + } else { + props[name] = {}; + } - // Define a fallback version of the method in browsers (ahem, IE), where - // there isn't any inspectable "Arguments" type. - if (!_.isArguments(arguments)) { - _.isArguments = function(obj) { - return !!(obj && _.has(obj, 'callee')); - }; - } + props[name].setter = true; + props[name].setterToken = tkn; + } - // Optimize `isFunction` if appropriate. - if (typeof (/./) !== 'function') { - _.isFunction = function(obj) { - return typeof obj === 'function'; - }; - } + function saveGetter(name) { + if (props[name] && _.has(props, name)) { + if (props[name].basic || props[name].getter) + warning("W075", state.tokens.next, i); + } else { + props[name] = {}; + } - // Is a given object a finite number? - _.isFinite = function(obj) { - return isFinite(obj) && !isNaN(parseFloat(obj)); - }; + props[name].getter = true; + props[name].getterToken = state.tokens.curr; + } - // Is the given value `NaN`? (NaN is the only number which does not equal itself). - _.isNaN = function(obj) { - return _.isNumber(obj) && obj != +obj; - }; + b = state.tokens.curr.line !== state.tokens.next.line; + if (b) { + indent += state.option.indent; + if (state.tokens.next.from === indent + state.option.indent) { + indent += state.option.indent; + } + } - // Is a given value a boolean? - _.isBoolean = function(obj) { - return obj === true || obj === false || toString.call(obj) == '[object Boolean]'; - }; + for (;;) { + if (state.tokens.next.id === "}") { + break; + } - // Is a given value equal to null? - _.isNull = function(obj) { - return obj === null; - }; - - // Is a given variable undefined? - _.isUndefined = function(obj) { - return obj === void 0; - }; - - // Shortcut function for checking if an object has a given property directly - // on itself (in other words, not on a prototype). - _.has = function(obj, key) { - return hasOwnProperty.call(obj, key); - }; - - // Utility Functions - // ----------------- + if (b) { + indentation(); + } - // Run Underscore.js in *noConflict* mode, returning the `_` variable to its - // previous owner. Returns a reference to the Underscore object. - _.noConflict = function() { - root._ = previousUnderscore; - return this; - }; + if (isclassdef && state.tokens.next.value === "static") { + advance("static"); + tag = "static "; + } - // Keep the identity function around for default iterators. - _.identity = function(value) { - return value; - }; + if (state.tokens.next.value === "get" && peek().id !== ":") { + advance("get"); - // Run a function **n** times. - _.times = function(n, iterator, context) { - var accum = Array(n); - for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i); - return accum; - }; + if (!state.option.inES5(!isclassdef)) { + error("E034"); + } - // Return a random integer between min and max (inclusive). - _.random = function(min, max) { - if (max == null) { - max = min; - min = 0; - } - return min + Math.floor(Math.random() * (max - min + 1)); - }; + i = property_name(); + if (!i) { + error("E035"); + } - // List of HTML entities for escaping. - var entityMap = { - escape: { - '&': '&', - '<': '<', - '>': '>', - '"': '"', - "'": ''', - '/': '/' - } - }; - entityMap.unescape = _.invert(entityMap.escape); + // It is a Syntax Error if PropName of MethodDefinition is + // "constructor" and SpecialMethod of MethodDefinition is true. + if (isclassdef && i === "constructor") { + error("E049", state.tokens.next, "class getter method", i); + } - // Regexes containing the keys and values listed immediately above. - var entityRegexes = { - escape: new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'), - unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g') - }; + saveGetter(tag + i); + t = state.tokens.next; + adjacent(state.tokens.curr, state.tokens.next); + f = doFunction(); + p = f["(params)"]; - // Functions for escaping and unescaping strings to/from HTML interpolation. - _.each(['escape', 'unescape'], function(method) { - _[method] = function(string) { - if (string == null) return ''; - return ('' + string).replace(entityRegexes[method], function(match) { - return entityMap[method][match]; - }); - }; - }); + if (p) { + warning("W076", t, p[0], i); + } - // If the value of the named property is a function then invoke it; - // otherwise, return it. - _.result = function(object, property) { - if (object == null) return null; - var value = object[property]; - return _.isFunction(value) ? value.call(object) : value; - }; + adjacent(state.tokens.curr, state.tokens.next); + } else if (state.tokens.next.value === "set" && peek().id !== ":") { + advance("set"); - // Add your own custom functions to the Underscore object. - _.mixin = function(obj) { - each(_.functions(obj), function(name){ - var func = _[name] = obj[name]; - _.prototype[name] = function() { - var args = [this._wrapped]; - push.apply(args, arguments); - return result.call(this, func.apply(_, args)); - }; - }); - }; + if (!state.option.inES5(!isclassdef)) { + error("E034"); + } - // Generate a unique integer id (unique within the entire client session). - // Useful for temporary DOM ids. - var idCounter = 0; - _.uniqueId = function(prefix) { - var id = ++idCounter + ''; - return prefix ? prefix + id : id; - }; + i = property_name(); + if (!i) { + error("E035"); + } - // By default, Underscore uses ERB-style template delimiters, change the - // following template settings to use alternative delimiters. - _.templateSettings = { - evaluate : /<%([\s\S]+?)%>/g, - interpolate : /<%=([\s\S]+?)%>/g, - escape : /<%-([\s\S]+?)%>/g - }; + // It is a Syntax Error if PropName of MethodDefinition is + // "constructor" and SpecialMethod of MethodDefinition is true. + if (isclassdef && i === "constructor") { + error("E049", state.tokens.next, "class setter method", i); + } - // When customizing `templateSettings`, if you don't want to define an - // interpolation, evaluation or escaping regex, we need one that is - // guaranteed not to match. - var noMatch = /(.)^/; + saveSetter(tag + i, state.tokens.next); + t = state.tokens.next; + adjacent(state.tokens.curr, state.tokens.next); + f = doFunction(); + p = f["(params)"]; - // Certain characters need to be escaped so that they can be put into a - // string literal. - var escapes = { - "'": "'", - '\\': '\\', - '\r': 'r', - '\n': 'n', - '\t': 't', - '\u2028': 'u2028', - '\u2029': 'u2029' - }; + if (!p || p.length !== 1) { + warning("W077", t, i); + } + } else { + g = false; + if (state.tokens.next.value === "*" && state.tokens.next.type === "(punctuator)") { + if (!state.option.inESNext()) { + warning("W104", state.tokens.next, "generator functions"); + } + advance("*"); + g = true; + } + i = property_name(); + saveProperty(tag + i, state.tokens.next); - var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g; + if (typeof i !== "string") { + break; + } - // JavaScript micro-templating, similar to John Resig's implementation. - // Underscore templating handles arbitrary delimiters, preserves whitespace, - // and correctly escapes quotes within interpolated code. - _.template = function(text, data, settings) { - var render; - settings = _.defaults({}, settings, _.templateSettings); + if (state.tokens.next.value === "(") { + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "concise methods"); + } + doFunction(i, undefined, g); + } else if (!isclassdef) { + advance(":"); + nonadjacent(state.tokens.curr, state.tokens.next); + expression(10); + } + } + // It is a Syntax Error if PropName of MethodDefinition is "prototype". + if (isclassdef && i === "prototype") { + error("E049", state.tokens.next, "class method", i); + } - // Combine delimiters into one regular expression via alternation. - var matcher = new RegExp([ - (settings.escape || noMatch).source, - (settings.interpolate || noMatch).source, - (settings.evaluate || noMatch).source - ].join('|') + '|$', 'g'); + countMember(i); + if (isclassdef) { + tag = ""; + continue; + } + if (state.tokens.next.id === ",") { + comma({ allowTrailing: true, property: true }); + if (state.tokens.next.id === ",") { + warning("W070", state.tokens.curr); + } else if (state.tokens.next.id === "}" && !state.option.inES5(true)) { + warning("W070", state.tokens.curr); + } + } else { + break; + } + } + if (b) { + indent -= state.option.indent; + indentation(); + } + advance("}", this); - // Compile the template source, escaping string literals appropriately. - var index = 0; - var source = "__p+='"; - text.replace(matcher, function(match, escape, interpolate, evaluate, offset) { - source += text.slice(index, offset) - .replace(escaper, function(match) { return '\\' + escapes[match]; }); + // Check for lonely setters if in the ES5 mode. + if (state.option.inES5()) { + for (var name in props) { + if (_.has(props, name) && props[name].setter && !props[name].getter) { + warning("W078", props[name].setterToken); + } + } + } + return this; + }; + x.fud = function () { + error("E036", state.tokens.curr); + }; + }(delim("{"))); - if (escape) { - source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'"; - } - if (interpolate) { - source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'"; - } - if (evaluate) { - source += "';\n" + evaluate + "\n__p+='"; - } - index = offset + match.length; - return match; - }); - source += "';\n"; + function destructuringExpression() { + var id, ids; + var identifiers = []; + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "destructuring expression"); + } + var nextInnerDE = function () { + var ident; + if (_.contains(["[", "{"], state.tokens.next.value)) { + ids = destructuringExpression(); + for (var id in ids) { + id = ids[id]; + identifiers.push({ id: id.id, token: id.token }); + } + } else if (state.tokens.next.value === ",") { + identifiers.push({ id: null, token: state.tokens.curr }); + } else { + ident = identifier(); + if (ident) + identifiers.push({ id: ident, token: state.tokens.curr }); + } + }; + if (state.tokens.next.value === "[") { + advance("["); + nextInnerDE(); + while (state.tokens.next.value !== "]") { + advance(","); + nextInnerDE(); + } + advance("]"); + } else if (state.tokens.next.value === "{") { + advance("{"); + id = identifier(); + if (state.tokens.next.value === ":") { + advance(":"); + nextInnerDE(); + } else { + identifiers.push({ id: id, token: state.tokens.curr }); + } + while (state.tokens.next.value !== "}") { + advance(","); + id = identifier(); + if (state.tokens.next.value === ":") { + advance(":"); + nextInnerDE(); + } else { + identifiers.push({ id: id, token: state.tokens.curr }); + } + } + advance("}"); + } + return identifiers; + } + function destructuringExpressionMatch(tokens, value) { + if (value.first) { + _.zip(tokens, value.first).forEach(function (val) { + var token = val[0]; + var value = val[1]; + if (token && value) { + token.first = value; + } else if (token && token.first && !value) { + warning("W080", token.first, token.first.value); + } /* else { + XXX value is discarded: wouldn't it need a warning ? + } */ + }); + } + } - // If a variable is not specified, place data values in local scope. - if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n'; + var conststatement = stmt("const", function (prefix) { + var tokens, value; + // state variable to know if it is a lone identifier, or a destructuring statement. + var lone; - source = "var __t,__p='',__j=Array.prototype.join," + - "print=function(){__p+=__j.call(arguments,'');};\n" + - source + "return __p;\n"; + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "const"); + } - try { - render = new Function(settings.variable || 'obj', '_', source); - } catch (e) { - e.source = source; - throw e; - } + this.first = []; + for (;;) { + var names = []; + nonadjacent(state.tokens.curr, state.tokens.next); + if (_.contains(["{", "["], state.tokens.next.value)) { + tokens = destructuringExpression(); + lone = false; + } else { + tokens = [ { id: identifier(), token: state.tokens.curr } ]; + lone = true; + } + for (var t in tokens) { + t = tokens[t]; + if (funct[t.id] === "const") { + warning("E011", null, t.id); + } + if (funct["(global)"] && predefined[t.id] === false) { + warning("W079", t.token, t.id); + } + if (t.id) { + addlabel(t.id, "const"); + names.push(t.token); + } + } + if (prefix) { + break; + } - if (data) return render(data, _); - var template = function(data) { - return render.call(this, data, _); - }; + this.first = this.first.concat(names); - // Provide the compiled function source as a convenience for precompilation. - template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}'; + if (state.tokens.next.id !== "=") { + warning("E012", state.tokens.curr, state.tokens.curr.value); + } - return template; - }; + if (state.tokens.next.id === "=") { + nonadjacent(state.tokens.curr, state.tokens.next); + advance("="); + nonadjacent(state.tokens.curr, state.tokens.next); + if (state.tokens.next.id === "undefined") { + warning("W080", state.tokens.prev, state.tokens.prev.value); + } + if (peek(0).id === "=" && state.tokens.next.identifier) { + warning("W120", state.tokens.next, state.tokens.next.value); + } + value = expression(10); + if (lone) { + tokens[0].first = value; + } else { + destructuringExpressionMatch(names, value); + } + } - // Add a "chain" function, which will delegate to the wrapper. - _.chain = function(obj) { - return _(obj).chain(); - }; + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + return this; + }); + conststatement.exps = true; + var varstatement = stmt("var", function (prefix) { + // JavaScript does not have block scope. It only has function scope. So, + // declaring a variable in a block can have unexpected consequences. + var tokens, lone, value; - // OOP - // --------------- - // If Underscore is called as a function, it returns a wrapped object that - // can be used OO-style. This wrapper holds altered versions of all the - // underscore functions. Wrapped objects may be chained. + if (funct["(onevar)"] && state.option.onevar) { + warning("W081"); + } else if (!funct["(global)"]) { + funct["(onevar)"] = true; + } - // Helper function to continue chaining intermediate results. - var result = function(obj) { - return this._chain ? _(obj).chain() : obj; - }; + this.first = []; + for (;;) { + var names = []; + nonadjacent(state.tokens.curr, state.tokens.next); + if (_.contains(["{", "["], state.tokens.next.value)) { + tokens = destructuringExpression(); + lone = false; + } else { + tokens = [ { id: identifier(), token: state.tokens.curr } ]; + lone = true; + } + for (var t in tokens) { + t = tokens[t]; + if (state.option.inESNext() && funct[t.id] === "const") { + warning("E011", null, t.id); + } + if (funct["(global)"] && predefined[t.id] === false) { + warning("W079", t.token, t.id); + } + if (t.id) { + addlabel(t.id, "unused", t.token); + names.push(t.token); + } + } + if (prefix) { + break; + } - // Add all of the Underscore functions to the wrapper object. - _.mixin(_); + this.first = this.first.concat(names); - // Add all mutator Array functions to the wrapper. - each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) { - var method = ArrayProto[name]; - _.prototype[name] = function() { - var obj = this._wrapped; - method.apply(obj, arguments); - if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0]; - return result.call(this, obj); - }; - }); + if (state.tokens.next.id === "=") { + nonadjacent(state.tokens.curr, state.tokens.next); + advance("="); + nonadjacent(state.tokens.curr, state.tokens.next); + if (state.tokens.next.id === "undefined") { + warning("W080", state.tokens.prev, state.tokens.prev.value); + } + if (peek(0).id === "=" && state.tokens.next.identifier) { + warning("W120", state.tokens.next, state.tokens.next.value); + } + value = expression(10); + if (lone) { + tokens[0].first = value; + } else { + destructuringExpressionMatch(names, value); + } + } - // Add all accessor Array functions to the wrapper. - each(['concat', 'join', 'slice'], function(name) { - var method = ArrayProto[name]; - _.prototype[name] = function() { - return result.call(this, method.apply(this._wrapped, arguments)); - }; - }); + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + return this; + }); + varstatement.exps = true; + var letstatement = stmt("let", function (prefix) { + var tokens, lone, value, letblock; - _.extend(_.prototype, { + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "let"); + } - // Start chaining a wrapped Underscore object. - chain: function() { - this._chain = true; - return this; - }, + if (state.tokens.next.value === "(") { + if (!state.option.inMoz(true)) { + warning("W118", state.tokens.next, "let block"); + } + advance("("); + funct["(blockscope)"].stack(); + letblock = true; + } else if (funct["(nolet)"]) { + error("E048", state.tokens.curr); + } - // Extracts the result from a wrapped and chained object. - value: function() { - return this._wrapped; - } + if (funct["(onevar)"] && state.option.onevar) { + warning("W081"); + } else if (!funct["(global)"]) { + funct["(onevar)"] = true; + } - }); + this.first = []; + for (;;) { + var names = []; + nonadjacent(state.tokens.curr, state.tokens.next); + if (_.contains(["{", "["], state.tokens.next.value)) { + tokens = destructuringExpression(); + lone = false; + } else { + tokens = [ { id: identifier(), token: state.tokens.curr.value } ]; + lone = true; + } + for (var t in tokens) { + t = tokens[t]; + if (state.option.inESNext() && funct[t.id] === "const") { + warning("E011", null, t.id); + } + if (funct["(global)"] && predefined[t.id] === false) { + warning("W079", t.token, t.id); + } + if (t.id && !funct["(nolet)"]) { + addlabel(t.id, "unused", t.token, true); + names.push(t.token); + } + } + if (prefix) { + break; + } -}).call(this); + this.first = this.first.concat(names); -})() -},{}],10:[function(require,module,exports){ -(function(global){/*global window, global*/ -var util = require("util") -var assert = require("assert") + if (state.tokens.next.id === "=") { + nonadjacent(state.tokens.curr, state.tokens.next); + advance("="); + nonadjacent(state.tokens.curr, state.tokens.next); + if (state.tokens.next.id === "undefined") { + warning("W080", state.tokens.prev, state.tokens.prev.value); + } + if (peek(0).id === "=" && state.tokens.next.identifier) { + warning("W120", state.tokens.next, state.tokens.next.value); + } + value = expression(10); + if (lone) { + tokens[0].first = value; + } else { + destructuringExpressionMatch(names, value); + } + } -var slice = Array.prototype.slice -var console -var times = {} + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + if (letblock) { + advance(")"); + block(true, true); + this.block = true; + funct["(blockscope)"].unstack(); + } -if (typeof global !== "undefined" && global.console) { - console = global.console -} else if (typeof window !== "undefined" && window.console) { - console = window.console -} else { - console = window.console = {} -} + return this; + }); + letstatement.exps = true; -var functions = [ - [log, "log"] - , [info, "info"] - , [warn, "warn"] - , [error, "error"] - , [time, "time"] - , [timeEnd, "timeEnd"] - , [trace, "trace"] - , [dir, "dir"] - , [assert, "assert"] -] + blockstmt("class", function () { + return classdef.call(this, true); + }); -for (var i = 0; i < functions.length; i++) { - var tuple = functions[i] - var f = tuple[0] - var name = tuple[1] + function classdef(stmt) { + /*jshint validthis:true */ + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "class"); + } + if (stmt) { + // BindingIdentifier + this.name = identifier(); + addlabel(this.name, "unused", state.tokens.curr); + } else if (state.tokens.next.identifier && state.tokens.next.value !== "extends") { + // BindingIdentifier(opt) + this.name = identifier(); + } + classtail(this); + return this; + } - if (!console[name]) { - console[name] = f - } -} + function classtail(c) { + var strictness = state.directive["use strict"]; -module.exports = console + // ClassHeritage(opt) + if (state.tokens.next.value === "extends") { + advance("extends"); + c.heritage = expression(10); + } -function log() {} + // A ClassBody is always strict code. + state.directive["use strict"] = true; + advance("{"); + // ClassBody(opt) + c.body = state.syntax["{"].nud(true); + state.directive["use strict"] = strictness; + } -function info() { - console.log.apply(console, arguments) -} + blockstmt("function", function () { + var generator = false; + if (state.tokens.next.value === "*") { + advance("*"); + if (state.option.inESNext(true)) { + generator = true; + } else { + warning("W119", state.tokens.curr, "function*"); + } + } + if (inblock) { + warning("W082", state.tokens.curr); -function warn() { - console.log.apply(console, arguments) -} + } + var i = identifier(); + if (funct[i] === "const") { + warning("E011", null, i); + } + adjacent(state.tokens.curr, state.tokens.next); + addlabel(i, "unction", state.tokens.curr); -function error() { - console.warn.apply(console, arguments) -} + doFunction(i, { statement: true }, generator); + if (state.tokens.next.id === "(" && state.tokens.next.line === state.tokens.curr.line) { + error("E039"); + } + return this; + }); -function time(label) { - times[label] = Date.now() -} + prefix("function", function () { + var generator = false; + if (state.tokens.next.value === "*") { + if (!state.option.inESNext()) { + warning("W119", state.tokens.curr, "function*"); + } + advance("*"); + generator = true; + } + var i = optionalidentifier(); + if (i || state.option.gcl) { + adjacent(state.tokens.curr, state.tokens.next); + } else { + nonadjacent(state.tokens.curr, state.tokens.next); + } + doFunction(i, undefined, generator); + if (!state.option.loopfunc && funct["(loopage)"]) { + warning("W083"); + } + return this; + }); -function timeEnd(label) { - var time = times[label] - if (!time) { - throw new Error("No such label: " + label) - } + blockstmt("if", function () { + var t = state.tokens.next; + increaseComplexityCount(); + state.condition = true; + advance("("); + nonadjacent(this, t); + nospace(); + checkCondAssignment(expression(0)); + advance(")", t); + state.condition = false; + nospace(state.tokens.prev, state.tokens.curr); + block(true, true); + if (state.tokens.next.id === "else") { + nonadjacent(state.tokens.curr, state.tokens.next); + advance("else"); + if (state.tokens.next.id === "if" || state.tokens.next.id === "switch") { + statement(true); + } else { + block(true, true); + } + } + return this; + }); - var duration = Date.now() - time - console.log(label + ": " + duration + "ms") -} + blockstmt("try", function () { + var b; -function trace() { - var err = new Error() - err.name = "Trace" - err.message = util.format.apply(null, arguments) - console.error(err.stack) -} + function doCatch() { + var oldScope = scope; + var e; -function dir(object) { - console.log(util.inspect(object) + "\n") -} + advance("catch"); + nonadjacent(state.tokens.curr, state.tokens.next); + advance("("); -function assert(expression) { - if (!expression) { - var arr = slice.call(arguments, 1) - assert.ok(false, util.format.apply(null, arr)) - } -} - -})(window) -},{"util":11,"assert":12}],11:[function(require,module,exports){ -var events = require('events'); - -exports.isArray = isArray; -exports.isDate = function(obj){return Object.prototype.toString.call(obj) === '[object Date]'}; -exports.isRegExp = function(obj){return Object.prototype.toString.call(obj) === '[object RegExp]'}; + scope = Object.create(oldScope); + e = state.tokens.next.value; + if (state.tokens.next.type !== "(identifier)") { + e = null; + warning("E030", state.tokens.next, e); + } -exports.print = function () {}; -exports.puts = function () {}; -exports.debug = function() {}; + advance(); -exports.inspect = function(obj, showHidden, depth, colors) { - var seen = []; + funct = { + "(name)" : "(catch)", + "(line)" : state.tokens.next.line, + "(character)": state.tokens.next.character, + "(context)" : funct, + "(breakage)" : funct["(breakage)"], + "(loopage)" : funct["(loopage)"], + "(scope)" : scope, + "(statement)": false, + "(metrics)" : createMetrics(state.tokens.next), + "(catch)" : true, + "(tokens)" : {}, + "(blockscope)": funct["(blockscope)"], + "(comparray)": funct["(comparray)"] + }; - var stylize = function(str, styleType) { - // http://en.wikipedia.org/wiki/ANSI_escape_code#graphics - var styles = - { 'bold' : [1, 22], - 'italic' : [3, 23], - 'underline' : [4, 24], - 'inverse' : [7, 27], - 'white' : [37, 39], - 'grey' : [90, 39], - 'black' : [30, 39], - 'blue' : [34, 39], - 'cyan' : [36, 39], - 'green' : [32, 39], - 'magenta' : [35, 39], - 'red' : [31, 39], - 'yellow' : [33, 39] }; + if (e) { + addlabel(e, "exception"); + } - var style = - { 'special': 'cyan', - 'number': 'blue', - 'boolean': 'yellow', - 'undefined': 'grey', - 'null': 'bold', - 'string': 'green', - 'date': 'magenta', - // "name": intentionally not styling - 'regexp': 'red' }[styleType]; + if (state.tokens.next.value === "if") { + if (!state.option.inMoz(true)) { + warning("W118", state.tokens.curr, "catch filter"); + } + advance("if"); + expression(0); + } - if (style) { - return '\033[' + styles[style][0] + 'm' + str + - '\033[' + styles[style][1] + 'm'; - } else { - return str; - } - }; - if (! colors) { - stylize = function(str, styleType) { return str; }; - } + advance(")"); - function format(value, recurseTimes) { - // Provide a hook for user-specified inspect functions. - // Check that value is an object with an inspect function on it - if (value && typeof value.inspect === 'function' && - // Filter out the util module, it's inspect function is special - value !== exports && - // Also filter out any prototype objects using the circular check. - !(value.constructor && value.constructor.prototype === value)) { - return value.inspect(recurseTimes); - } + state.tokens.curr.funct = funct; + functions.push(funct); - // Primitive types cannot have properties - switch (typeof value) { - case 'undefined': - return stylize('undefined', 'undefined'); + block(false); - case 'string': - var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') - .replace(/'/g, "\\'") - .replace(/\\"/g, '"') + '\''; - return stylize(simple, 'string'); + scope = oldScope; - case 'number': - return stylize('' + value, 'number'); + funct["(last)"] = state.tokens.curr.line; + funct["(lastcharacter)"] = state.tokens.curr.character; + funct = funct["(context)"]; + } - case 'boolean': - return stylize('' + value, 'boolean'); - } - // For some reason typeof null is "object", so special case here. - if (value === null) { - return stylize('null', 'null'); - } + block(false); - // Look up the keys of the object. - var visible_keys = Object_keys(value); - var keys = showHidden ? Object_getOwnPropertyNames(value) : visible_keys; + while (state.tokens.next.id === "catch") { + increaseComplexityCount(); + if (b && (!state.option.inMoz(true))) { + warning("W118", state.tokens.next, "multiple catch blocks"); + } + doCatch(); + b = true; + } - // Functions without properties can be shortcutted. - if (typeof value === 'function' && keys.length === 0) { - if (isRegExp(value)) { - return stylize('' + value, 'regexp'); - } else { - var name = value.name ? ': ' + value.name : ''; - return stylize('[Function' + name + ']', 'special'); - } - } + if (state.tokens.next.id === "finally") { + advance("finally"); + block(false); + return; + } - // Dates without properties can be shortcutted - if (isDate(value) && keys.length === 0) { - return stylize(value.toUTCString(), 'date'); - } + if (!b) { + error("E021", state.tokens.next, "catch", state.tokens.next.value); + } - var base, type, braces; - // Determine the object type - if (isArray(value)) { - type = 'Array'; - braces = ['[', ']']; - } else { - type = 'Object'; - braces = ['{', '}']; - } + return this; + }); - // Make functions say that they are functions - if (typeof value === 'function') { - var n = value.name ? ': ' + value.name : ''; - base = (isRegExp(value)) ? ' ' + value : ' [Function' + n + ']'; - } else { - base = ''; - } + blockstmt("while", function () { + var t = state.tokens.next; + funct["(breakage)"] += 1; + funct["(loopage)"] += 1; + increaseComplexityCount(); + advance("("); + nonadjacent(this, t); + nospace(); + checkCondAssignment(expression(0)); + advance(")", t); + nospace(state.tokens.prev, state.tokens.curr); + block(true, true); + funct["(breakage)"] -= 1; + funct["(loopage)"] -= 1; + return this; + }).labelled = true; - // Make dates with properties first say the date - if (isDate(value)) { - base = ' ' + value.toUTCString(); - } + blockstmt("with", function () { + var t = state.tokens.next; + if (state.directive["use strict"]) { + error("E010", state.tokens.curr); + } else if (!state.option.withstmt) { + warning("W085", state.tokens.curr); + } - if (keys.length === 0) { - return braces[0] + base + braces[1]; - } + advance("("); + nonadjacent(this, t); + nospace(); + expression(0); + advance(")", t); + nospace(state.tokens.prev, state.tokens.curr); + block(true, true); - if (recurseTimes < 0) { - if (isRegExp(value)) { - return stylize('' + value, 'regexp'); - } else { - return stylize('[Object]', 'special'); - } - } + return this; + }); - seen.push(value); + blockstmt("switch", function () { + var t = state.tokens.next, + g = false; + funct["(breakage)"] += 1; + advance("("); + nonadjacent(this, t); + nospace(); + checkCondAssignment(expression(0)); + advance(")", t); + nospace(state.tokens.prev, state.tokens.curr); + nonadjacent(state.tokens.curr, state.tokens.next); + t = state.tokens.next; + advance("{"); + nonadjacent(state.tokens.curr, state.tokens.next); + indent += state.option.indent; + this.cases = []; - var output = keys.map(function(key) { - var name, str; - if (value.__lookupGetter__) { - if (value.__lookupGetter__(key)) { - if (value.__lookupSetter__(key)) { - str = stylize('[Getter/Setter]', 'special'); - } else { - str = stylize('[Getter]', 'special'); - } - } else { - if (value.__lookupSetter__(key)) { - str = stylize('[Setter]', 'special'); - } - } - } - if (visible_keys.indexOf(key) < 0) { - name = '[' + key + ']'; - } - if (!str) { - if (seen.indexOf(value[key]) < 0) { - if (recurseTimes === null) { - str = format(value[key]); - } else { - str = format(value[key], recurseTimes - 1); - } - if (str.indexOf('\n') > -1) { - if (isArray(value)) { - str = str.split('\n').map(function(line) { - return ' ' + line; - }).join('\n').substr(2); - } else { - str = '\n' + str.split('\n').map(function(line) { - return ' ' + line; - }).join('\n'); - } - } - } else { - str = stylize('[Circular]', 'special'); - } - } - if (typeof name === 'undefined') { - if (type === 'Array' && key.match(/^\d+$/)) { - return str; - } - name = JSON.stringify('' + key); - if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { - name = name.substr(1, name.length - 2); - name = stylize(name, 'name'); - } else { - name = name.replace(/'/g, "\\'") - .replace(/\\"/g, '"') - .replace(/(^"|"$)/g, "'"); - name = stylize(name, 'string'); - } - } + for (;;) { + switch (state.tokens.next.id) { + case "case": + switch (funct["(verb)"]) { + case "yield": + case "break": + case "case": + case "continue": + case "return": + case "switch": + case "throw": + break; + default: + // You can tell JSHint that you don't use break intentionally by + // adding a comment /* falls through */ on a line just before + // the next `case`. + if (!reg.fallsThrough.test(state.lines[state.tokens.next.line - 2])) { + warning("W086", state.tokens.curr, "case"); + } + } + indentation(-state.option.indent); + advance("case"); + this.cases.push(expression(20)); + increaseComplexityCount(); + g = true; + advance(":"); + funct["(verb)"] = "case"; + break; + case "default": + switch (funct["(verb)"]) { + case "yield": + case "break": + case "continue": + case "return": + case "throw": + break; + default: + // Do not display a warning if 'default' is the first statement or if + // there is a special /* falls through */ comment. + if (this.cases.length) { + if (!reg.fallsThrough.test(state.lines[state.tokens.next.line - 2])) { + warning("W086", state.tokens.curr, "default"); + } + } + } + indentation(-state.option.indent); + advance("default"); + g = true; + advance(":"); + break; + case "}": + indent -= state.option.indent; + indentation(); + advance("}", t); + funct["(breakage)"] -= 1; + funct["(verb)"] = undefined; + return; + case "(end)": + error("E023", state.tokens.next, "}"); + return; + default: + if (g) { + switch (state.tokens.curr.id) { + case ",": + error("E040"); + return; + case ":": + g = false; + statements(); + break; + default: + error("E025", state.tokens.curr); + return; + } + } else { + if (state.tokens.curr.id === ":") { + advance(":"); + error("E024", state.tokens.curr, ":"); + statements(); + } else { + error("E021", state.tokens.next, "case", state.tokens.next.value); + return; + } + } + } + } + }).labelled = true; - return name + ': ' + str; - }); + stmt("debugger", function () { + if (!state.option.debug) { + warning("W087", this); + } + return this; + }).exps = true; - seen.pop(); + (function () { + var x = stmt("do", function () { + funct["(breakage)"] += 1; + funct["(loopage)"] += 1; + increaseComplexityCount(); - var numLinesEst = 0; - var length = output.reduce(function(prev, cur) { - numLinesEst++; - if (cur.indexOf('\n') >= 0) numLinesEst++; - return prev + cur.length + 1; - }, 0); + this.first = block(true, true); + advance("while"); + var t = state.tokens.next; + nonadjacent(state.tokens.curr, t); + advance("("); + nospace(); + checkCondAssignment(expression(0)); + advance(")", t); + nospace(state.tokens.prev, state.tokens.curr); + funct["(breakage)"] -= 1; + funct["(loopage)"] -= 1; + return this; + }); + x.labelled = true; + x.exps = true; + }()); - if (length > 50) { - output = braces[0] + - (base === '' ? '' : base + '\n ') + - ' ' + - output.join(',\n ') + - ' ' + - braces[1]; + blockstmt("for", function () { + var s, t = state.tokens.next; + var letscope = false; + var foreachtok = null; - } else { - output = braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; - } + if (t.value === "each") { + foreachtok = t; + advance("each"); + if (!state.option.inMoz(true)) { + warning("W118", state.tokens.curr, "for each"); + } + } - return output; - } - return format(obj, (typeof depth === 'undefined' ? 2 : depth)); -}; + funct["(breakage)"] += 1; + funct["(loopage)"] += 1; + increaseComplexityCount(); + advance("("); + nonadjacent(this, t); + nospace(); + // what kind of for(…) statement it is? for(…of…)? for(…in…)? for(…;…;…)? + var nextop; // contains the token of the "in" or "of" operator + var i = 0; + var inof = ["in", "of"]; + do { + nextop = peek(i); + ++i; + } while (!_.contains(inof, nextop.value) && nextop.value !== ";" && + nextop.type !== "(end)"); -function isArray(ar) { - return ar instanceof Array || - Array.isArray(ar) || - (ar && ar !== Object.prototype && isArray(ar.__proto__)); -} + // if we're in a for (… in|of …) statement + if (_.contains(inof, nextop.value)) { + if (!state.option.inESNext() && nextop.value === "of") { + error("W104", nextop, "for of"); + } + if (state.tokens.next.id === "var") { + advance("var"); + state.syntax["var"].fud.call(state.syntax["var"].fud, true); + } else if (state.tokens.next.id === "let") { + advance("let"); + // create a new block scope + letscope = true; + funct["(blockscope)"].stack(); + state.syntax["let"].fud.call(state.syntax["let"].fud, true); + } else { + switch (funct[state.tokens.next.value]) { + case "unused": + funct[state.tokens.next.value] = "var"; + break; + case "var": + break; + default: + if (!funct["(blockscope)"].getlabel(state.tokens.next.value)) + warning("W088", state.tokens.next, state.tokens.next.value); + } + advance(); + } + advance(nextop.value); + expression(20); + advance(")", t); + s = block(true, true); + if (state.option.forin && s && (s.length > 1 || typeof s[0] !== "object" || + s[0].value !== "if")) { + warning("W089", this); + } + funct["(breakage)"] -= 1; + funct["(loopage)"] -= 1; + } else { + if (foreachtok) { + error("E045", foreachtok); + } + if (state.tokens.next.id !== ";") { + if (state.tokens.next.id === "var") { + advance("var"); + state.syntax["var"].fud.call(state.syntax["var"].fud); + } else if (state.tokens.next.id === "let") { + advance("let"); + // create a new block scope + letscope = true; + funct["(blockscope)"].stack(); + state.syntax["let"].fud.call(state.syntax["let"].fud); + } else { + for (;;) { + expression(0, "for"); + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + } + } + nolinebreak(state.tokens.curr); + advance(";"); + if (state.tokens.next.id !== ";") { + checkCondAssignment(expression(0)); + } + nolinebreak(state.tokens.curr); + advance(";"); + if (state.tokens.next.id === ";") { + error("E021", state.tokens.next, ")", ";"); + } + if (state.tokens.next.id !== ")") { + for (;;) { + expression(0, "for"); + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + } + advance(")", t); + nospace(state.tokens.prev, state.tokens.curr); + block(true, true); + funct["(breakage)"] -= 1; + funct["(loopage)"] -= 1; + } + // unstack loop blockscope + if (letscope) { + funct["(blockscope)"].unstack(); + } + return this; + }).labelled = true; -function isRegExp(re) { - return re instanceof RegExp || - (typeof re === 'object' && Object.prototype.toString.call(re) === '[object RegExp]'); -} + stmt("break", function () { + var v = state.tokens.next.value; + + if (funct["(breakage)"] === 0) + warning("W052", state.tokens.next, this.value); + + if (!state.option.asi) + nolinebreak(this); + + if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { + if (state.tokens.curr.line === state.tokens.next.line) { + if (funct[v] !== "label") { + warning("W090", state.tokens.next, v); + } else if (scope[v] !== funct) { + warning("W091", state.tokens.next, v); + } + this.first = state.tokens.next; + advance(); + } + } + reachable("break"); + return this; + }).exps = true; + + + stmt("continue", function () { + var v = state.tokens.next.value; + + if (funct["(breakage)"] === 0) + warning("W052", state.tokens.next, this.value); + + if (!state.option.asi) + nolinebreak(this); + + if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { + if (state.tokens.curr.line === state.tokens.next.line) { + if (funct[v] !== "label") { + warning("W090", state.tokens.next, v); + } else if (scope[v] !== funct) { + warning("W091", state.tokens.next, v); + } + this.first = state.tokens.next; + advance(); + } + } else if (!funct["(loopage)"]) { + warning("W052", state.tokens.next, this.value); + } + reachable("continue"); + return this; + }).exps = true; + + + stmt("return", function () { + if (this.line === state.tokens.next.line) { + if (state.tokens.next.id === "(regexp)") + warning("W092"); + + if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { + nonadjacent(state.tokens.curr, state.tokens.next); + this.first = expression(0); + + if (this.first && + this.first.type === "(punctuator)" && this.first.value === "=" && !state.option.boss) { + warningAt("W093", this.first.line, this.first.character); + } + } + } else { + if (state.tokens.next.type === "(punctuator)" && + ["[", "{", "+", "-"].indexOf(state.tokens.next.value) > -1) { + nolinebreak(this); // always warn (Line breaking error) + } + } + reachable("return"); + return this; + }).exps = true; + + (function (x) { + x.exps = true; + x.lbp = 25; + }(prefix("yield", function () { + var prev = state.tokens.prev; + if (state.option.inESNext(true) && !funct["(generator)"]) { + error("E046", state.tokens.curr, "yield"); + } else if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "yield"); + } + funct["(generator)"] = "yielded"; + if (this.line === state.tokens.next.line || !state.option.inMoz(true)) { + if (state.tokens.next.id === "(regexp)") + warning("W092"); + + if (state.tokens.next.id !== ";" && !state.tokens.next.reach && state.tokens.next.nud) { + nobreaknonadjacent(state.tokens.curr, state.tokens.next); + this.first = expression(10); + + if (this.first.type === "(punctuator)" && this.first.value === "=" && !state.option.boss) { + warningAt("W093", this.first.line, this.first.character); + } + } + + if (state.option.inMoz(true) && state.tokens.next.id !== ")" && + (prev.lbp > 30 || (!prev.assign && !isEndOfExpr()) || prev.id === "yield")) { + error("E050", this); + } + } else if (!state.option.asi) { + nolinebreak(this); // always warn (Line breaking error) + } + return this; + }))); -function isDate(d) { - if (d instanceof Date) return true; - if (typeof d !== 'object') return false; - var properties = Date.prototype && Object_getOwnPropertyNames(Date.prototype); - var proto = d.__proto__ && Object_getOwnPropertyNames(d.__proto__); - return JSON.stringify(proto) === JSON.stringify(properties); -} -function pad(n) { - return n < 10 ? '0' + n.toString(10) : n.toString(10); -} + stmt("throw", function () { + nolinebreak(this); + nonadjacent(state.tokens.curr, state.tokens.next); + this.first = expression(20); + reachable("throw"); + return this; + }).exps = true; -var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', - 'Oct', 'Nov', 'Dec']; + stmt("import", function () { + if (!state.option.inESNext()) { + warning("W119", state.tokens.curr, "import"); + } -// 26 Feb 16:19:34 -function timestamp() { - var d = new Date(); - var time = [pad(d.getHours()), - pad(d.getMinutes()), - pad(d.getSeconds())].join(':'); - return [d.getDate(), months[d.getMonth()], time].join(' '); -} + if (state.tokens.next.identifier) { + this.name = identifier(); + addlabel(this.name, "unused", state.tokens.curr); + } else { + advance("{"); + for (;;) { + var importName; + if (state.tokens.next.type === "default") { + importName = "default"; + advance("default"); + } else { + importName = identifier(); + } + if (state.tokens.next.value === "as") { + advance("as"); + importName = identifier(); + } + addlabel(importName, "unused", state.tokens.curr); -exports.log = function (msg) {}; + if (state.tokens.next.value === ",") { + advance(","); + } else if (state.tokens.next.value === "}") { + advance("}"); + break; + } else { + error("E024", state.tokens.next, state.tokens.next.value); + break; + } + } + } -exports.pump = null; + advance("from"); + advance("(string)"); + return this; + }).exps = true; -var Object_keys = Object.keys || function (obj) { - var res = []; - for (var key in obj) res.push(key); - return res; -}; + stmt("export", function () { + if (!state.option.inESNext()) { + warning("W119", state.tokens.curr, "export"); + } -var Object_getOwnPropertyNames = Object.getOwnPropertyNames || function (obj) { - var res = []; - for (var key in obj) { - if (Object.hasOwnProperty.call(obj, key)) res.push(key); - } - return res; -}; + if (state.tokens.next.type === "default") { + advance("default"); + if (state.tokens.next.id === "function" || state.tokens.next.id === "class") { + this.block = true; + } + this.exportee = expression(10); -var Object_create = Object.create || function (prototype, properties) { - // from es5-shim - var object; - if (prototype === null) { - object = { '__proto__' : null }; - } - else { - if (typeof prototype !== 'object') { - throw new TypeError( - 'typeof prototype[' + (typeof prototype) + '] != \'object\'' - ); - } - var Type = function () {}; - Type.prototype = prototype; - object = new Type(); - object.__proto__ = prototype; - } - if (typeof properties !== 'undefined' && Object.defineProperties) { - Object.defineProperties(object, properties); - } - return object; -}; + return this; + } -exports.inherits = function(ctor, superCtor) { - ctor.super_ = superCtor; - ctor.prototype = Object_create(superCtor.prototype, { - constructor: { - value: ctor, - enumerable: false, - writable: true, - configurable: true - } - }); -}; + if (state.tokens.next.value === "{") { + advance("{"); + for (;;) { + identifier(); -var formatRegExp = /%[sdj%]/g; -exports.format = function(f) { - if (typeof f !== 'string') { - var objects = []; - for (var i = 0; i < arguments.length; i++) { - objects.push(exports.inspect(arguments[i])); - } - return objects.join(' '); - } + if (state.tokens.next.value === ",") { + advance(","); + } else if (state.tokens.next.value === "}") { + advance("}"); + break; + } else { + error("E024", state.tokens.next, state.tokens.next.value); + break; + } + } + return this; + } - var i = 1; - var args = arguments; - var len = args.length; - var str = String(f).replace(formatRegExp, function(x) { - if (x === '%%') return '%'; - if (i >= len) return x; - switch (x) { - case '%s': return String(args[i++]); - case '%d': return Number(args[i++]); - case '%j': return JSON.stringify(args[i++]); - default: - return x; - } - }); - for(var x = args[i]; i < len; x = args[++i]){ - if (x === null || typeof x !== 'object') { - str += ' ' + x; - } else { - str += ' ' + exports.inspect(x); - } - } - return str; -}; + if (state.tokens.next.id === "var") { + advance("var"); + state.syntax["var"].fud.call(state.syntax["var"].fud); + } else if (state.tokens.next.id === "let") { + advance("let"); + state.syntax["let"].fud.call(state.syntax["let"].fud); + } else if (state.tokens.next.id === "const") { + advance("const"); + state.syntax["const"].fud.call(state.syntax["const"].fud); + } else if (state.tokens.next.id === "function") { + this.block = true; + advance("function"); + state.syntax["function"].fud(); + } else if (state.tokens.next.id === "class") { + this.block = true; + advance("class"); + state.syntax["class"].fud(); + } else { + error("E024", state.tokens.next, state.tokens.next.value); + } -},{"events":2}],12:[function(require,module,exports){ -(function(){// UTILITY -var util = require('util'); -var Buffer = require("buffer").Buffer; -var pSlice = Array.prototype.slice; + return this; + }).exps = true; -function objectKeys(object) { - if (Object.keys) return Object.keys(object); - var result = []; - for (var name in object) { - if (Object.prototype.hasOwnProperty.call(object, name)) { - result.push(name); - } - } - return result; -} + // Future Reserved Words -// 1. The assert module provides functions that throw -// AssertionError's when particular conditions are not met. The -// assert module must conform to the following interface. + FutureReservedWord("abstract"); + FutureReservedWord("boolean"); + FutureReservedWord("byte"); + FutureReservedWord("char"); + FutureReservedWord("class", { es5: true, nud: classdef }); + FutureReservedWord("double"); + FutureReservedWord("enum", { es5: true }); + FutureReservedWord("export", { es5: true }); + FutureReservedWord("extends", { es5: true }); + FutureReservedWord("final"); + FutureReservedWord("float"); + FutureReservedWord("goto"); + FutureReservedWord("implements", { es5: true, strictOnly: true }); + FutureReservedWord("import", { es5: true }); + FutureReservedWord("int"); + FutureReservedWord("interface", { es5: true, strictOnly: true }); + FutureReservedWord("long"); + FutureReservedWord("native"); + FutureReservedWord("package", { es5: true, strictOnly: true }); + FutureReservedWord("private", { es5: true, strictOnly: true }); + FutureReservedWord("protected", { es5: true, strictOnly: true }); + FutureReservedWord("public", { es5: true, strictOnly: true }); + FutureReservedWord("short"); + FutureReservedWord("static", { es5: true, strictOnly: true }); + FutureReservedWord("super", { es5: true }); + FutureReservedWord("synchronized"); + FutureReservedWord("throws"); + FutureReservedWord("transient"); + FutureReservedWord("volatile"); -var assert = module.exports = ok; + // this function is used to determine wether a squarebracket or a curlybracket + // expression is a comprehension array, destructuring assignment or a json value. -// 2. The AssertionError is defined in assert. -// new assert.AssertionError({ message: message, -// actual: actual, -// expected: expected }) + var lookupBlockType = function () { + var pn, pn1; + var i = -1; + var bracketStack = 0; + var ret = {}; + if (_.contains(["[", "{"], state.tokens.curr.value)) + bracketStack += 1; + do { + pn = (i === -1) ? state.tokens.next : peek(i); + pn1 = peek(i + 1); + i = i + 1; + if (_.contains(["[", "{"], pn.value)) { + bracketStack += 1; + } else if (_.contains(["]", "}"], pn.value)) { + bracketStack -= 1; + } + if (pn.identifier && pn.value === "for" && bracketStack === 1) { + ret.isCompArray = true; + ret.notJson = true; + break; + } + if (_.contains(["}", "]"], pn.value) && pn1.value === "=" && bracketStack === 0) { + ret.isDestAssign = true; + ret.notJson = true; + break; + } + if (pn.value === ";") { + ret.isBlock = true; + ret.notJson = true; + } + } while (bracketStack > 0 && pn.id !== "(end)" && i < 15); + return ret; + }; -assert.AssertionError = function AssertionError(options) { - this.name = 'AssertionError'; - this.message = options.message; - this.actual = options.actual; - this.expected = options.expected; - this.operator = options.operator; - var stackStartFunction = options.stackStartFunction || fail; + // Check whether this function has been reached for a destructuring assign with undeclared values + function destructuringAssignOrJsonValue() { + // lookup for the assignment (esnext only) + // if it has semicolons, it is a block, so go parse it as a block + // or it's not a block, but there are assignments, check for undeclared variables - if (Error.captureStackTrace) { - Error.captureStackTrace(this, stackStartFunction); - } -}; -util.inherits(assert.AssertionError, Error); + var block = lookupBlockType(); + if (block.notJson) { + if (!state.option.inESNext() && block.isDestAssign) { + warning("W104", state.tokens.curr, "destructuring assignment"); + } + statements(); + // otherwise parse json value + } else { + state.option.laxbreak = true; + state.jsonMode = true; + jsonValue(); + } + } -function replacer(key, value) { - if (value === undefined) { - return '' + value; - } - if (typeof value === 'number' && (isNaN(value) || !isFinite(value))) { - return value.toString(); - } - if (typeof value === 'function' || value instanceof RegExp) { - return value.toString(); - } - return value; -} + // array comprehension parsing function + // parses and defines the three states of the list comprehension in order + // to avoid defining global variables, but keeping them to the list comprehension scope + // only. The order of the states are as follows: + // * "use" which will be the returned iterative part of the list comprehension + // * "define" which will define the variables local to the list comprehension + // * "filter" which will help filter out values -function truncate(s, n) { - if (typeof s == 'string') { - return s.length < n ? s : s.slice(0, n); - } else { - return s; - } -} + var arrayComprehension = function () { + var CompArray = function () { + this.mode = "use"; + this.variables = []; + }; + var _carrays = []; + var _current; + function declare(v) { + var l = _current.variables.filter(function (elt) { + // if it has, change its undef state + if (elt.value === v) { + elt.undef = false; + return v; + } + }).length; + return l !== 0; + } + function use(v) { + var l = _current.variables.filter(function (elt) { + // and if it has been defined + if (elt.value === v && !elt.undef) { + if (elt.unused === true) { + elt.unused = false; + } + return v; + } + }).length; + // otherwise we warn about it + return (l === 0); + } + return {stack: function () { + _current = new CompArray(); + _carrays.push(_current); + }, + unstack: function () { + _current.variables.filter(function (v) { + if (v.unused) + warning("W098", v.token, v.value); + if (v.undef) + isundef(v.funct, "W117", v.token, v.value); + }); + _carrays.splice(-1, 1); + _current = _carrays[_carrays.length - 1]; + }, + setState: function (s) { + if (_.contains(["use", "define", "generate", "filter"], s)) + _current.mode = s; + }, + check: function (v) { + if (!_current) { + return; + } + // When we are in "use" state of the list comp, we enqueue that var + if (_current && _current.mode === "use") { + if (use(v)) { + _current.variables.push({ + funct: funct, + token: state.tokens.curr, + value: v, + undef: true, + unused: false + }); + } + return true; + // When we are in "define" state of the list comp, + } else if (_current && _current.mode === "define") { + // check if the variable has been used previously + if (!declare(v)) { + _current.variables.push({ + funct: funct, + token: state.tokens.curr, + value: v, + undef: false, + unused: true + }); + } + return true; + // When we are in the "generate" state of the list comp, + } else if (_current && _current.mode === "generate") { + isundef(funct, "W117", state.tokens.curr, v); + return true; + // When we are in "filter" state, + } else if (_current && _current.mode === "filter") { + // we check whether current variable has been declared + if (use(v)) { + // if not we warn about it + isundef(funct, "W117", state.tokens.curr, v); + } + return true; + } + return false; + } + }; + }; -assert.AssertionError.prototype.toString = function() { - if (this.message) { - return [this.name + ':', this.message].join(' '); - } else { - return [ - this.name + ':', - truncate(JSON.stringify(this.actual, replacer), 128), - this.operator, - truncate(JSON.stringify(this.expected, replacer), 128) - ].join(' '); - } -}; -// assert.AssertionError instanceof Error + // Parse JSON -assert.AssertionError.__proto__ = Error.prototype; + function jsonValue() { -// At present only the three keys mentioned above are used and -// understood by the spec. Implementations or sub modules can pass -// other keys to the AssertionError's constructor - they will be -// ignored. + function jsonObject() { + var o = {}, t = state.tokens.next; + advance("{"); + if (state.tokens.next.id !== "}") { + for (;;) { + if (state.tokens.next.id === "(end)") { + error("E026", state.tokens.next, t.line); + } else if (state.tokens.next.id === "}") { + warning("W094", state.tokens.curr); + break; + } else if (state.tokens.next.id === ",") { + error("E028", state.tokens.next); + } else if (state.tokens.next.id !== "(string)") { + warning("W095", state.tokens.next, state.tokens.next.value); + } + if (o[state.tokens.next.value] === true) { + warning("W075", state.tokens.next, state.tokens.next.value); + } else if ((state.tokens.next.value === "__proto__" && + !state.option.proto) || (state.tokens.next.value === "__iterator__" && + !state.option.iterator)) { + warning("W096", state.tokens.next, state.tokens.next.value); + } else { + o[state.tokens.next.value] = true; + } + advance(); + advance(":"); + jsonValue(); + if (state.tokens.next.id !== ",") { + break; + } + advance(","); + } + } + advance("}"); + } -// 3. All of the following functions must throw an AssertionError -// when a corresponding condition is not met, with a message that -// may be undefined if not provided. All assertion methods provide -// both the actual and expected values to the assertion error for -// display purposes. + function jsonArray() { + var t = state.tokens.next; + advance("["); + if (state.tokens.next.id !== "]") { + for (;;) { + if (state.tokens.next.id === "(end)") { + error("E027", state.tokens.next, t.line); + } else if (state.tokens.next.id === "]") { + warning("W094", state.tokens.curr); + break; + } else if (state.tokens.next.id === ",") { + error("E028", state.tokens.next); + } + jsonValue(); + if (state.tokens.next.id !== ",") { + break; + } + advance(","); + } + } + advance("]"); + } -function fail(actual, expected, message, operator, stackStartFunction) { - throw new assert.AssertionError({ - message: message, - actual: actual, - expected: expected, - operator: operator, - stackStartFunction: stackStartFunction - }); -} + switch (state.tokens.next.id) { + case "{": + jsonObject(); + break; + case "[": + jsonArray(); + break; + case "true": + case "false": + case "null": + case "(number)": + case "(string)": + advance(); + break; + case "-": + advance("-"); + if (state.tokens.curr.character !== state.tokens.next.from) { + warning("W011", state.tokens.curr); + } + adjacent(state.tokens.curr, state.tokens.next); + advance("(number)"); + break; + default: + error("E003", state.tokens.next); + } + } -// EXTENSION! allows for well behaved errors defined elsewhere. -assert.fail = fail; + var blockScope = function () { + var _current = {}; + var _variables = [_current]; -// 4. Pure assertion tests whether a value is truthy, as determined -// by !!guard. -// assert.ok(guard, message_opt); -// This statement is equivalent to assert.equal(true, guard, -// message_opt);. To test strictly for the value true, use -// assert.strictEqual(true, guard, message_opt);. + function _checkBlockLabels() { + for (var t in _current) { + if (_current[t]["(type)"] === "unused") { + if (state.option.unused) { + var tkn = _current[t]["(token)"]; + var line = tkn.line; + var chr = tkn.character; + warningAt("W098", line, chr, t); + } + } + } + } -function ok(value, message) { - if (!!!value) fail(value, true, message, '==', assert.ok); -} -assert.ok = ok; + return { + stack: function () { + _current = {}; + _variables.push(_current); + }, -// 5. The equality assertion tests shallow, coercive equality with -// ==. -// assert.equal(actual, expected, message_opt); + unstack: function () { + _checkBlockLabels(); + _variables.splice(_variables.length - 1, 1); + _current = _.last(_variables); + }, -assert.equal = function equal(actual, expected, message) { - if (actual != expected) fail(actual, expected, message, '==', assert.equal); -}; + getlabel: function (l) { + for (var i = _variables.length - 1 ; i >= 0; --i) { + if (_.has(_variables[i], l)) { + return _variables[i]; + } + } + }, -// 6. The non-equality assertion tests for whether two objects are not equal -// with != assert.notEqual(actual, expected, message_opt); + current: { + has: function (t) { + return _.has(_current, t); + }, + add: function (t, type, tok) { + _current[t] = { "(type)" : type, + "(token)": tok }; + } + } + }; + }; -assert.notEqual = function notEqual(actual, expected, message) { - if (actual == expected) { - fail(actual, expected, message, '!=', assert.notEqual); - } -}; + // The actual JSHINT function itself. + var itself = function (s, o, g) { + var i, k, x; + var optionKeys; + var newOptionObj = {}; + var newIgnoredObj = {}; -// 7. The equivalence assertion tests a deep equality relation. -// assert.deepEqual(actual, expected, message_opt); + state.reset(); -assert.deepEqual = function deepEqual(actual, expected, message) { - if (!_deepEqual(actual, expected)) { - fail(actual, expected, message, 'deepEqual', assert.deepEqual); - } -}; + if (o && o.scope) { + JSHINT.scope = o.scope; + } else { + JSHINT.errors = []; + JSHINT.undefs = []; + JSHINT.internals = []; + JSHINT.blacklist = {}; + JSHINT.scope = "(main)"; + } -function _deepEqual(actual, expected) { - // 7.1. All identical values are equivalent, as determined by ===. - if (actual === expected) { - return true; + predefined = Object.create(null); + combine(predefined, vars.ecmaIdentifiers); + combine(predefined, vars.reservedVars); - } else if (Buffer.isBuffer(actual) && Buffer.isBuffer(expected)) { - if (actual.length != expected.length) return false; + combine(predefined, g || {}); - for (var i = 0; i < actual.length; i++) { - if (actual[i] !== expected[i]) return false; - } + declared = Object.create(null); + exported = Object.create(null); - return true; + function each(obj, cb) { + if (!obj) + return; - // 7.2. If the expected value is a Date object, the actual value is - // equivalent if it is also a Date object that refers to the same time. - } else if (actual instanceof Date && expected instanceof Date) { - return actual.getTime() === expected.getTime(); + if (!Array.isArray(obj) && typeof obj === "object") + obj = Object.keys(obj); - // 7.3. Other pairs that do not both pass typeof value == 'object', - // equivalence is determined by ==. - } else if (typeof actual != 'object' && typeof expected != 'object') { - return actual == expected; + obj.forEach(cb); + } - // 7.4. For all other Object pairs, including Array objects, equivalence is - // determined by having the same number of owned properties (as verified - // with Object.prototype.hasOwnProperty.call), the same set of keys - // (although not necessarily the same order), equivalent values for every - // corresponding key, and an identical 'prototype' property. Note: this - // accounts for both named and indexed properties on Arrays. - } else { - return objEquiv(actual, expected); - } -} + if (o) { + each(o.predef || null, function (item) { + var slice, prop; -function isUndefinedOrNull(value) { - return value === null || value === undefined; -} + if (item[0] === "-") { + slice = item.slice(1); + JSHINT.blacklist[slice] = slice; + } else { + prop = Object.getOwnPropertyDescriptor(o.predef, item); + predefined[item] = prop ? prop.value : false; + } + }); -function isArguments(object) { - return Object.prototype.toString.call(object) == '[object Arguments]'; -} + each(o.exported || null, function (item) { + exported[item] = true; + }); -function objEquiv(a, b) { - if (isUndefinedOrNull(a) || isUndefinedOrNull(b)) - return false; - // an identical 'prototype' property. - if (a.prototype !== b.prototype) return false; - //~~~I've managed to break Object.keys through screwy arguments passing. - // Converting to array solves the problem. - if (isArguments(a)) { - if (!isArguments(b)) { - return false; - } - a = pSlice.call(a); - b = pSlice.call(b); - return _deepEqual(a, b); - } - try { - var ka = objectKeys(a), - kb = objectKeys(b), - key, i; - } catch (e) {//happens when one is a string literal and the other isn't - return false; - } - // having the same number of owned properties (keys incorporates - // hasOwnProperty) - if (ka.length != kb.length) - return false; - //the same set of keys (although not necessarily the same order), - ka.sort(); - kb.sort(); - //~~~cheap key test - for (i = ka.length - 1; i >= 0; i--) { - if (ka[i] != kb[i]) - return false; - } - //equivalent values for every corresponding key, and - //~~~possibly expensive deep test - for (i = ka.length - 1; i >= 0; i--) { - key = ka[i]; - if (!_deepEqual(a[key], b[key])) return false; - } - return true; -} + delete o.predef; + delete o.exported; -// 8. The non-equivalence assertion tests for any deep inequality. -// assert.notDeepEqual(actual, expected, message_opt); + optionKeys = Object.keys(o); + for (x = 0; x < optionKeys.length; x++) { + if (/^-W\d{3}$/g.test(optionKeys[x])) { + newIgnoredObj[optionKeys[x].slice(1)] = true; + } else { + newOptionObj[optionKeys[x]] = o[optionKeys[x]]; -assert.notDeepEqual = function notDeepEqual(actual, expected, message) { - if (_deepEqual(actual, expected)) { - fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual); - } -}; + if (optionKeys[x] === "newcap" && o[optionKeys[x]] === false) + newOptionObj["(explicitNewcap)"] = true; -// 9. The strict equality assertion tests strict equality, as determined by ===. -// assert.strictEqual(actual, expected, message_opt); + if (optionKeys[x] === "indent") + newOptionObj["(explicitIndent)"] = o[optionKeys[x]] === false ? false : true; + } + } + } -assert.strictEqual = function strictEqual(actual, expected, message) { - if (actual !== expected) { - fail(actual, expected, message, '===', assert.strictEqual); - } -}; + state.option = newOptionObj; + state.ignored = newIgnoredObj; -// 10. The strict non-equality assertion tests for strict inequality, as -// determined by !==. assert.notStrictEqual(actual, expected, message_opt); + state.option.indent = state.option.indent || 4; + state.option.maxerr = state.option.maxerr || 50; -assert.notStrictEqual = function notStrictEqual(actual, expected, message) { - if (actual === expected) { - fail(actual, expected, message, '!==', assert.notStrictEqual); - } -}; + indent = 1; + global = Object.create(predefined); + scope = global; + funct = { + "(global)": true, + "(name)": "(global)", + "(scope)": scope, + "(breakage)": 0, + "(loopage)": 0, + "(tokens)": {}, + "(metrics)": createMetrics(state.tokens.next), + "(blockscope)": blockScope(), + "(comparray)": arrayComprehension() + }; + functions = [funct]; + urls = []; + stack = null; + member = {}; + membersOnly = null; + implied = {}; + inblock = false; + lookahead = []; + warnings = 0; + unuseds = []; -function expectedException(actual, expected) { - if (!actual || !expected) { - return false; - } + if (!isString(s) && !Array.isArray(s)) { + errorAt("E004", 0); + return false; + } - if (expected instanceof RegExp) { - return expected.test(actual); - } else if (actual instanceof expected) { - return true; - } else if (expected.call({}, actual) === true) { - return true; - } + api = { + get isJSON() { + return state.jsonMode; + }, - return false; -} + getOption: function (name) { + return state.option[name] || null; + }, -function _throws(shouldThrow, block, expected, message) { - var actual; + getCache: function (name) { + return state.cache[name]; + }, - if (typeof expected === 'string') { - message = expected; - expected = null; - } + setCache: function (name, value) { + state.cache[name] = value; + }, - try { - block(); - } catch (e) { - actual = e; - } + warn: function (code, data) { + warningAt.apply(null, [ code, data.line, data.char ].concat(data.data)); + }, - message = (expected && expected.name ? ' (' + expected.name + ').' : '.') + - (message ? ' ' + message : '.'); + on: function (names, listener) { + names.split(" ").forEach(function (name) { + emitter.on(name, listener); + }.bind(this)); + } + }; - if (shouldThrow && !actual) { - fail('Missing expected exception' + message); - } + emitter.removeAllListeners(); + (extraModules || []).forEach(function (func) { + func(api); + }); - if (!shouldThrow && expectedException(actual, expected)) { - fail('Got unwanted exception' + message); - } + state.tokens.prev = state.tokens.curr = state.tokens.next = state.syntax["(begin)"]; - if ((shouldThrow && actual && expected && - !expectedException(actual, expected)) || (!shouldThrow && actual)) { - throw actual; - } -} + lex = new Lexer(s); -// 11. Expected to throw an error: -// assert.throws(block, Error_opt, message_opt); + lex.on("warning", function (ev) { + warningAt.apply(null, [ ev.code, ev.line, ev.character].concat(ev.data)); + }); -assert.throws = function(block, /*optional*/error, /*optional*/message) { - _throws.apply(this, [true].concat(pSlice.call(arguments))); -}; + lex.on("error", function (ev) { + errorAt.apply(null, [ ev.code, ev.line, ev.character ].concat(ev.data)); + }); -// EXTENSION! This is annoying to write outside this module. -assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) { - _throws.apply(this, [false].concat(pSlice.call(arguments))); -}; + lex.on("fatal", function (ev) { + quit("E041", ev.line, ev.from); + }); -assert.ifError = function(err) { if (err) {throw err;}}; + lex.on("Identifier", function (ev) { + emitter.emit("Identifier", ev); + }); -})() -},{"util":11,"buffer":13}],7:[function(require,module,exports){ -(function(){"use strict"; + lex.on("String", function (ev) { + emitter.emit("String", ev); + }); -var _ = require("underscore"); + lex.on("Number", function (ev) { + emitter.emit("Number", ev); + }); -var errors = { - // JSHint options - E001: "Bad option: '{a}'.", - E002: "Bad option value.", + lex.start(); - // JSHint input - E003: "Expected a JSON value.", - E004: "Input is neither a string nor an array of strings.", - E005: "Input is empty.", - E006: "Unexpected early end of program.", + // Check options + for (var name in o) { + if (_.has(o, name)) { + checkOption(name, state.tokens.curr); + } + } - // Strict mode - E007: "Missing \"use strict\" statement.", - E008: "Strict violation.", - E009: "Option 'validthis' can't be used in a global scope.", - E010: "'with' is not allowed in strict mode.", + assume(); - // Constants - E011: "const '{a}' has already been declared.", - E012: "const '{a}' is initialized to 'undefined'.", - E013: "Attempting to override '{a}' which is a constant.", + // combine the passed globals after we've assumed all our options + combine(predefined, g || {}); - // Regular expressions - E014: "A regular expression literal can be confused with '/='.", - E015: "Unclosed regular expression.", - E016: "Invalid regular expression.", + //reset values + comma.first = true; - // Tokens - E017: "Unclosed comment.", - E018: "Unbegun comment.", - E019: "Unmatched '{a}'.", - E020: "Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.", - E021: "Expected '{a}' and instead saw '{b}'.", - E022: "Line breaking error '{a}'.", - E023: "Missing '{a}'.", - E024: "Unexpected '{a}'.", - E025: "Missing ':' on a case clause.", - E026: "Missing '}' to match '{' from line {a}.", - E027: "Missing ']' to match '[' form line {a}.", - E028: "Illegal comma.", - E029: "Unclosed string.", + try { + advance(); + switch (state.tokens.next.id) { + case "{": + case "[": + destructuringAssignOrJsonValue(); + break; + default: + directives(); - // Everything else - E030: "Expected an identifier and instead saw '{a}'.", - E031: "Bad assignment.", // FIXME: Rephrase - E032: "Expected a small integer or 'false' and instead saw '{a}'.", - E033: "Expected an operator and instead saw '{a}'.", - E034: "get/set are ES5 features.", - E035: "Missing property name.", - E036: "Expected to see a statement and instead saw a block.", - E037: "Constant {a} was not declared correctly.", - E038: "Variable {a} was not declared correctly.", - E039: "Function declarations are not invocable. Wrap the whole function invocation in parens.", - E040: "Each value should have its own case label.", - E041: "Unrecoverable syntax error.", - E042: "Stopping.", - E043: "Too many errors.", - E044: "'{a}' is already defined and can't be redefined.", - E045: "Invalid for each loop.", - E046: "A yield statement shall be within a generator function (with syntax: `function*`)", - E047: "A generator function shall contain a yield statement.", - E048: "Let declaration not directly within block.", - E049: "A {a} cannot be named '{b}'." -}; + if (state.directive["use strict"]) { + if (!state.option.globalstrict && !(state.option.node || state.option.phantom)) { + warning("W097", state.tokens.prev); + } + } -var warnings = { - W001: "'hasOwnProperty' is a really bad name.", - W002: "Value of '{a}' may be overwritten in IE.", - W003: "'{a}' was used before it was defined.", - W004: "'{a}' is already defined.", - W005: "A dot following a number can be confused with a decimal point.", - W006: "Confusing minuses.", - W007: "Confusing pluses.", - W008: "A leading decimal point can be confused with a dot: '{a}'.", - W009: "The array literal notation [] is preferrable.", - W010: "The object literal notation {} is preferrable.", - W011: "Unexpected space after '{a}'.", - W012: "Unexpected space before '{a}'.", - W013: "Missing space after '{a}'.", - W014: "Bad line breaking before '{a}'.", - W015: "Expected '{a}' to have an indentation at {b} instead at {c}.", - W016: "Unexpected use of '{a}'.", - W017: "Bad operand.", - W018: "Confusing use of '{a}'.", - W019: "Use the isNaN function to compare with NaN.", - W020: "Read only.", - W021: "'{a}' is a function.", - W022: "Do not assign to the exception parameter.", - W023: "Expected an identifier in an assignment and instead saw a function invocation.", - W024: "Expected an identifier and instead saw '{a}' (a reserved word).", - W025: "Missing name in function declaration.", - W026: "Inner functions should be listed at the top of the outer function.", - W027: "Unreachable '{a}' after '{b}'.", - W028: "Label '{a}' on {b} statement.", - W030: "Expected an assignment or function call and instead saw an expression.", - W031: "Do not use 'new' for side effects.", - W032: "Unnecessary semicolon.", - W033: "Missing semicolon.", - W034: "Unnecessary directive \"{a}\".", - W035: "Empty block.", - W036: "Unexpected /*member '{a}'.", - W037: "'{a}' is a statement label.", - W038: "'{a}' used out of scope.", - W039: "'{a}' is not allowed.", - W040: "Possible strict violation.", - W041: "Use '{a}' to compare with '{b}'.", - W042: "Avoid EOL escaping.", - W043: "Bad escaping of EOL. Use option multistr if needed.", - W044: "Bad or unnecessary escaping.", - W045: "Bad number '{a}'.", - W046: "Don't use extra leading zeros '{a}'.", - W047: "A trailing decimal point can be confused with a dot: '{a}'.", - W048: "Unexpected control character in regular expression.", - W049: "Unexpected escaped character '{a}' in regular expression.", - W050: "JavaScript URL.", - W051: "Variables should not be deleted.", - W052: "Unexpected '{a}'.", - W053: "Do not use {a} as a constructor.", - W054: "The Function constructor is a form of eval.", - W055: "A constructor name should start with an uppercase letter.", - W056: "Bad constructor.", - W057: "Weird construction. Is 'new' unnecessary?", - W058: "Missing '()' invoking a constructor.", - W059: "Avoid arguments.{a}.", - W060: "document.write can be a form of eval.", - W061: "eval can be harmful.", - W062: "Wrap an immediate function invocation in parens " + - "to assist the reader in understanding that the expression " + - "is the result of a function, and not the function itself.", - W063: "Math is not a function.", - W064: "Missing 'new' prefix when invoking a constructor.", - W065: "Missing radix parameter.", - W066: "Implied eval. Consider passing a function instead of a string.", - W067: "Bad invocation.", - W068: "Wrapping non-IIFE function literals in parens is unnecessary.", - W069: "['{a}'] is better written in dot notation.", - W070: "Extra comma. (it breaks older versions of IE)", - W071: "This function has too many statements. ({a})", - W072: "This function has too many parameters. ({a})", - W073: "Blocks are nested too deeply. ({a})", - W074: "This function's cyclomatic complexity is too high. ({a})", - W075: "Duplicate key '{a}'.", - W076: "Unexpected parameter '{a}' in get {b} function.", - W077: "Expected a single parameter in set {a} function.", - W078: "Setter is defined without getter.", - W079: "Redefinition of '{a}'.", - W080: "It's not necessary to initialize '{a}' to 'undefined'.", - W081: "Too many var statements.", - W082: "Function declarations should not be placed in blocks. " + - "Use a function expression or move the statement to the top of " + - "the outer function.", - W083: "Don't make functions within a loop.", - W084: "Expected a conditional expression and instead saw an assignment.", - W085: "Don't use 'with'.", - W086: "Expected a 'break' statement before '{a}'.", - W087: "Forgotten 'debugger' statement?", - W088: "Creating global 'for' variable. Should be 'for (var {a} ...'.", - W089: "The body of a for in should be wrapped in an if statement to filter " + - "unwanted properties from the prototype.", - W090: "'{a}' is not a statement label.", - W091: "'{a}' is out of scope.", - W092: "Wrap the /regexp/ literal in parens to disambiguate the slash operator.", - W093: "Did you mean to return a conditional instead of an assignment?", - W094: "Unexpected comma.", - W095: "Expected a string and instead saw {a}.", - W096: "The '{a}' key may produce unexpected results.", - W097: "Use the function form of \"use strict\".", - W098: "'{a}' is defined but never used.", - W099: "Mixed spaces and tabs.", - W100: "This character may get silently deleted by one or more browsers.", - W101: "Line is too long.", - W102: "Trailing whitespace.", - W103: "The '{a}' property is deprecated.", - W104: "'{a}' is only available in JavaScript 1.7.", - W105: "Unexpected {a} in '{b}'.", - W106: "Identifier '{a}' is not in camel case.", - W107: "Script URL.", - W108: "Strings must use doublequote.", - W109: "Strings must use singlequote.", - W110: "Mixed double and single quotes.", - W112: "Unclosed string.", - W113: "Control character in string: {a}.", - W114: "Avoid {a}.", - W115: "Octal literals are not allowed in strict mode.", - W116: "Expected '{a}' and instead saw '{b}'.", - W117: "'{a}' is not defined.", - W118: "'{a}' is only available in Mozilla JavaScript extensions (use moz option).", - W119: "'{a}' is only available in ES6 (use esnext option)." -}; + statements(); + } + advance((state.tokens.next && state.tokens.next.value !== ".") ? "(end)" : undefined); + funct["(blockscope)"].unstack(); -var info = { - I001: "Comma warnings can be turned off with 'laxcomma'.", - I002: "Reserved words as properties can be used under the 'es5' option.", - I003: "ES5 option is now set per default" -}; + var markDefined = function (name, context) { + do { + if (typeof context[name] === "string") { + // JSHINT marks unused variables as 'unused' and + // unused function declaration as 'unction'. This + // code changes such instances back 'var' and + // 'closure' so that the code in JSHINT.data() + // doesn't think they're unused. -exports.errors = {}; -exports.warnings = {}; -exports.info = {}; + if (context[name] === "unused") + context[name] = "var"; + else if (context[name] === "unction") + context[name] = "closure"; -_.each(errors, function (desc, code) { - exports.errors[code] = { code: code, desc: desc }; -}); + return true; + } -_.each(warnings, function (desc, code) { - exports.warnings[code] = { code: code, desc: desc }; -}); + context = context["(context)"]; + } while (context); -_.each(info, function (desc, code) { - exports.info[code] = { code: code, desc: desc }; -}); + return false; + }; -})() -},{"underscore":9}],8:[function(require,module,exports){ -(function(){/* - * Lexical analysis and token construction. - */ + var clearImplied = function (name, line) { + if (!implied[name]) + return; -"use strict"; + var newImplied = []; + for (var i = 0; i < implied[name].length; i += 1) { + if (implied[name][i] !== line) + newImplied.push(implied[name][i]); + } -var _ = require("underscore"); -var events = require("events"); -var reg = require("./reg.js"); -var state = require("./state.js").state; + if (newImplied.length === 0) + delete implied[name]; + else + implied[name] = newImplied; + }; -// Some of these token types are from JavaScript Parser API -// while others are specific to JSHint parser. -// JS Parser API: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API + var warnUnused = function (name, tkn, type, unused_opt) { + var line = tkn.line; + var chr = tkn.character; -var Token = { - Identifier: 1, - Punctuator: 2, - NumericLiteral: 3, - StringLiteral: 4, - Comment: 5, - Keyword: 6, - NullLiteral: 7, - BooleanLiteral: 8, - RegExp: 9 -}; + if (unused_opt === undefined) { + unused_opt = state.option.unused; + } -// This is auto generated from the unicode tables. -// The tables are at: -// http://www.fileformat.info/info/unicode/category/Lu/list.htm -// http://www.fileformat.info/info/unicode/category/Ll/list.htm -// http://www.fileformat.info/info/unicode/category/Lt/list.htm -// http://www.fileformat.info/info/unicode/category/Lm/list.htm -// http://www.fileformat.info/info/unicode/category/Lo/list.htm -// http://www.fileformat.info/info/unicode/category/Nl/list.htm + if (unused_opt === true) { + unused_opt = "last-param"; + } -var unicodeLetterTable = [ - 170, 170, 181, 181, 186, 186, 192, 214, - 216, 246, 248, 705, 710, 721, 736, 740, 748, 748, 750, 750, - 880, 884, 886, 887, 890, 893, 902, 902, 904, 906, 908, 908, - 910, 929, 931, 1013, 1015, 1153, 1162, 1319, 1329, 1366, - 1369, 1369, 1377, 1415, 1488, 1514, 1520, 1522, 1568, 1610, - 1646, 1647, 1649, 1747, 1749, 1749, 1765, 1766, 1774, 1775, - 1786, 1788, 1791, 1791, 1808, 1808, 1810, 1839, 1869, 1957, - 1969, 1969, 1994, 2026, 2036, 2037, 2042, 2042, 2048, 2069, - 2074, 2074, 2084, 2084, 2088, 2088, 2112, 2136, 2308, 2361, - 2365, 2365, 2384, 2384, 2392, 2401, 2417, 2423, 2425, 2431, - 2437, 2444, 2447, 2448, 2451, 2472, 2474, 2480, 2482, 2482, - 2486, 2489, 2493, 2493, 2510, 2510, 2524, 2525, 2527, 2529, - 2544, 2545, 2565, 2570, 2575, 2576, 2579, 2600, 2602, 2608, - 2610, 2611, 2613, 2614, 2616, 2617, 2649, 2652, 2654, 2654, - 2674, 2676, 2693, 2701, 2703, 2705, 2707, 2728, 2730, 2736, - 2738, 2739, 2741, 2745, 2749, 2749, 2768, 2768, 2784, 2785, - 2821, 2828, 2831, 2832, 2835, 2856, 2858, 2864, 2866, 2867, - 2869, 2873, 2877, 2877, 2908, 2909, 2911, 2913, 2929, 2929, - 2947, 2947, 2949, 2954, 2958, 2960, 2962, 2965, 2969, 2970, - 2972, 2972, 2974, 2975, 2979, 2980, 2984, 2986, 2990, 3001, - 3024, 3024, 3077, 3084, 3086, 3088, 3090, 3112, 3114, 3123, - 3125, 3129, 3133, 3133, 3160, 3161, 3168, 3169, 3205, 3212, - 3214, 3216, 3218, 3240, 3242, 3251, 3253, 3257, 3261, 3261, - 3294, 3294, 3296, 3297, 3313, 3314, 3333, 3340, 3342, 3344, - 3346, 3386, 3389, 3389, 3406, 3406, 3424, 3425, 3450, 3455, - 3461, 3478, 3482, 3505, 3507, 3515, 3517, 3517, 3520, 3526, - 3585, 3632, 3634, 3635, 3648, 3654, 3713, 3714, 3716, 3716, - 3719, 3720, 3722, 3722, 3725, 3725, 3732, 3735, 3737, 3743, - 3745, 3747, 3749, 3749, 3751, 3751, 3754, 3755, 3757, 3760, - 3762, 3763, 3773, 3773, 3776, 3780, 3782, 3782, 3804, 3805, - 3840, 3840, 3904, 3911, 3913, 3948, 3976, 3980, 4096, 4138, - 4159, 4159, 4176, 4181, 4186, 4189, 4193, 4193, 4197, 4198, - 4206, 4208, 4213, 4225, 4238, 4238, 4256, 4293, 4304, 4346, - 4348, 4348, 4352, 4680, 4682, 4685, 4688, 4694, 4696, 4696, - 4698, 4701, 4704, 4744, 4746, 4749, 4752, 4784, 4786, 4789, - 4792, 4798, 4800, 4800, 4802, 4805, 4808, 4822, 4824, 4880, - 4882, 4885, 4888, 4954, 4992, 5007, 5024, 5108, 5121, 5740, - 5743, 5759, 5761, 5786, 5792, 5866, 5870, 5872, 5888, 5900, - 5902, 5905, 5920, 5937, 5952, 5969, 5984, 5996, 5998, 6000, - 6016, 6067, 6103, 6103, 6108, 6108, 6176, 6263, 6272, 6312, - 6314, 6314, 6320, 6389, 6400, 6428, 6480, 6509, 6512, 6516, - 6528, 6571, 6593, 6599, 6656, 6678, 6688, 6740, 6823, 6823, - 6917, 6963, 6981, 6987, 7043, 7072, 7086, 7087, 7104, 7141, - 7168, 7203, 7245, 7247, 7258, 7293, 7401, 7404, 7406, 7409, - 7424, 7615, 7680, 7957, 7960, 7965, 7968, 8005, 8008, 8013, - 8016, 8023, 8025, 8025, 8027, 8027, 8029, 8029, 8031, 8061, - 8064, 8116, 8118, 8124, 8126, 8126, 8130, 8132, 8134, 8140, - 8144, 8147, 8150, 8155, 8160, 8172, 8178, 8180, 8182, 8188, - 8305, 8305, 8319, 8319, 8336, 8348, 8450, 8450, 8455, 8455, - 8458, 8467, 8469, 8469, 8473, 8477, 8484, 8484, 8486, 8486, - 8488, 8488, 8490, 8493, 8495, 8505, 8508, 8511, 8517, 8521, - 8526, 8526, 8544, 8584, 11264, 11310, 11312, 11358, - 11360, 11492, 11499, 11502, 11520, 11557, 11568, 11621, - 11631, 11631, 11648, 11670, 11680, 11686, 11688, 11694, - 11696, 11702, 11704, 11710, 11712, 11718, 11720, 11726, - 11728, 11734, 11736, 11742, 11823, 11823, 12293, 12295, - 12321, 12329, 12337, 12341, 12344, 12348, 12353, 12438, - 12445, 12447, 12449, 12538, 12540, 12543, 12549, 12589, - 12593, 12686, 12704, 12730, 12784, 12799, 13312, 13312, - 19893, 19893, 19968, 19968, 40907, 40907, 40960, 42124, - 42192, 42237, 42240, 42508, 42512, 42527, 42538, 42539, - 42560, 42606, 42623, 42647, 42656, 42735, 42775, 42783, - 42786, 42888, 42891, 42894, 42896, 42897, 42912, 42921, - 43002, 43009, 43011, 43013, 43015, 43018, 43020, 43042, - 43072, 43123, 43138, 43187, 43250, 43255, 43259, 43259, - 43274, 43301, 43312, 43334, 43360, 43388, 43396, 43442, - 43471, 43471, 43520, 43560, 43584, 43586, 43588, 43595, - 43616, 43638, 43642, 43642, 43648, 43695, 43697, 43697, - 43701, 43702, 43705, 43709, 43712, 43712, 43714, 43714, - 43739, 43741, 43777, 43782, 43785, 43790, 43793, 43798, - 43808, 43814, 43816, 43822, 43968, 44002, 44032, 44032, - 55203, 55203, 55216, 55238, 55243, 55291, 63744, 64045, - 64048, 64109, 64112, 64217, 64256, 64262, 64275, 64279, - 64285, 64285, 64287, 64296, 64298, 64310, 64312, 64316, - 64318, 64318, 64320, 64321, 64323, 64324, 64326, 64433, - 64467, 64829, 64848, 64911, 64914, 64967, 65008, 65019, - 65136, 65140, 65142, 65276, 65313, 65338, 65345, 65370, - 65382, 65470, 65474, 65479, 65482, 65487, 65490, 65495, - 65498, 65500, 65536, 65547, 65549, 65574, 65576, 65594, - 65596, 65597, 65599, 65613, 65616, 65629, 65664, 65786, - 65856, 65908, 66176, 66204, 66208, 66256, 66304, 66334, - 66352, 66378, 66432, 66461, 66464, 66499, 66504, 66511, - 66513, 66517, 66560, 66717, 67584, 67589, 67592, 67592, - 67594, 67637, 67639, 67640, 67644, 67644, 67647, 67669, - 67840, 67861, 67872, 67897, 68096, 68096, 68112, 68115, - 68117, 68119, 68121, 68147, 68192, 68220, 68352, 68405, - 68416, 68437, 68448, 68466, 68608, 68680, 69635, 69687, - 69763, 69807, 73728, 74606, 74752, 74850, 77824, 78894, - 92160, 92728, 110592, 110593, 119808, 119892, 119894, 119964, - 119966, 119967, 119970, 119970, 119973, 119974, 119977, 119980, - 119982, 119993, 119995, 119995, 119997, 120003, 120005, 120069, - 120071, 120074, 120077, 120084, 120086, 120092, 120094, 120121, - 120123, 120126, 120128, 120132, 120134, 120134, 120138, 120144, - 120146, 120485, 120488, 120512, 120514, 120538, 120540, 120570, - 120572, 120596, 120598, 120628, 120630, 120654, 120656, 120686, - 120688, 120712, 120714, 120744, 120746, 120770, 120772, 120779, - 131072, 131072, 173782, 173782, 173824, 173824, 177972, 177972, - 177984, 177984, 178205, 178205, 194560, 195101 -]; + var warnable_types = { + "vars": ["var"], + "last-param": ["var", "param"], + "strict": ["var", "param", "last-param"] + }; + + if (unused_opt) { + if (warnable_types[unused_opt] && warnable_types[unused_opt].indexOf(type) !== -1) { + warningAt("W098", line, chr, name); + } + } + + unuseds.push({ + name: name, + line: line, + character: chr + }); + }; + + var checkUnused = function (func, key) { + var type = func[key]; + var tkn = func["(tokens)"][key]; + + if (key.charAt(0) === "(") + return; + + if (type !== "unused" && type !== "unction") + return; + + // Params are checked separately from other variables. + if (func["(params)"] && func["(params)"].indexOf(key) !== -1) + return; + + // Variable is in global scope and defined as exported. + if (func["(global)"] && _.has(exported, key)) { + return; + } + + warnUnused(key, tkn, "var"); + }; + + // Check queued 'x is not defined' instances to see if they're still undefined. + for (i = 0; i < JSHINT.undefs.length; i += 1) { + k = JSHINT.undefs[i].slice(0); + + if (markDefined(k[2].value, k[0])) { + clearImplied(k[2].value, k[2].line); + } else if (state.option.undef) { + warning.apply(warning, k.slice(1)); + } + } + + functions.forEach(function (func) { + if (func["(unusedOption)"] === false) { + return; + } + + for (var key in func) { + if (_.has(func, key)) { + checkUnused(func, key); + } + } + + if (!func["(params)"]) + return; -var identifierStartTable = []; + var params = func["(params)"].slice(); + var param = params.pop(); + var type, unused_opt; -for (var i = 0; i < 128; i++) { - identifierStartTable[i] = - i === 36 || // $ - i >= 65 && i <= 90 || // A-Z - i === 95 || // _ - i >= 97 && i <= 122; // a-z -} + while (param) { + type = func[param]; + unused_opt = func["(unusedOption)"] || state.option.unused; + unused_opt = unused_opt === true ? "last-param" : unused_opt; -var identifierPartTable = []; + // 'undefined' is a special case for (function (window, undefined) { ... })(); + // patterns. -for (var i = 0; i < 128; i++) { - identifierPartTable[i] = - identifierStartTable[i] || // $, _, A-Z, a-z - i >= 48 && i <= 57; // 0-9 -} + if (param === "undefined") + return; -// Object that handles postponed lexing verifications that checks the parsed -// environment state. + if (type === "unused" || type === "unction") { + warnUnused(param, func["(tokens)"][param], "param", func["(unusedOption)"]); + } else if (unused_opt === "last-param") { + return; + } -function asyncTrigger() { - var _checks = []; + param = params.pop(); + } + }); - return { - push: function (fn) { - _checks.push(fn); - }, + for (var key in declared) { + if (_.has(declared, key) && !_.has(global, key)) { + warnUnused(key, declared[key], "var"); + } + } - check: function () { - for (var check in _checks) { - _checks[check](); + } catch (err) { + if (err && err.name === "JSHintError") { + var nt = state.tokens.next || {}; + JSHINT.errors.push({ + scope : "(main)", + raw : err.raw, + code : err.code, + reason : err.message, + line : err.line || nt.line, + character : err.character || nt.from + }, null); + } else { + throw err; } + } - _checks.splice(0, _checks.length); + // Loop over the listed "internals", and check them as well. + + if (JSHINT.scope === "(main)") { + o = o || {}; + + for (i = 0; i < JSHINT.internals.length; i += 1) { + k = JSHINT.internals[i]; + o.scope = k.elem; + itself(k.value, o, g); + } } + + return JSHINT.errors.length === 0; }; -} -/* - * Lexer for JSHint. - * - * This object does a char-by-char scan of the provided source code - * and produces a sequence of tokens. - * - * var lex = new Lexer("var i = 0;"); - * lex.start(); - * lex.token(); // returns the next token - * - * You have to use the token() method to move the lexer forward - * but you don't have to use its return value to get tokens. In addition - * to token() method returning the next token, the Lexer object also - * emits events. - * - * lex.on("Identifier", function (data) { - * if (data.name.indexOf("_") >= 0) { - * // Produce a warning. - * } - * }); - * - * Note that the token() method returns tokens in a JSLint-compatible - * format while the event emitter uses a slightly modified version of - * Mozilla's JavaScript Parser API. Eventually, we will move away from - * JSLint format. - */ -function Lexer(source) { - var lines = source; + // Modules. + itself.addModule = function (func) { + extraModules.push(func); + }; - if (typeof lines === "string") { - lines = lines - .replace(/\r\n/g, "\n") - .replace(/\r/g, "\n") - .split("\n"); - } + itself.addModule(style.register); - // If the first line is a shebang (#!), make it a blank and move on. - // Shebangs are used by Node scripts. + // Data summary. + itself.data = function () { + var data = { + functions: [], + options: state.option + }; + var implieds = []; + var members = []; + var fu, f, i, j, n, globals; - if (lines[0] && lines[0].substr(0, 2) === "#!") { - lines[0] = ""; - } + if (itself.errors.length) { + data.errors = itself.errors; + } - this.emitter = new events.EventEmitter(); - this.source = source; - this.lines = lines; - this.prereg = true; + if (state.jsonMode) { + data.json = true; + } - this.line = 0; - this.char = 1; - this.from = 1; - this.input = ""; + for (n in implied) { + if (_.has(implied, n)) { + implieds.push({ + name: n, + line: implied[n] + }); + } + } - for (var i = 0; i < state.option.indent; i += 1) { - state.tab += " "; - } + if (implieds.length > 0) { + data.implieds = implieds; + } + + if (urls.length > 0) { + data.urls = urls; + } + + globals = Object.keys(scope); + if (globals.length > 0) { + data.globals = globals; + } + + for (i = 1; i < functions.length; i += 1) { + f = functions[i]; + fu = {}; + + for (j = 0; j < functionicity.length; j += 1) { + fu[functionicity[j]] = []; + } + + for (j = 0; j < functionicity.length; j += 1) { + if (fu[functionicity[j]].length === 0) { + delete fu[functionicity[j]]; + } + } + + fu.name = f["(name)"]; + fu.param = f["(params)"]; + fu.line = f["(line)"]; + fu.character = f["(character)"]; + fu.last = f["(last)"]; + fu.lastcharacter = f["(lastcharacter)"]; + data.functions.push(fu); + } + + if (unuseds.length > 0) { + data.unused = unuseds; + } + + members = []; + for (n in member) { + if (typeof member[n] === "number") { + data.member = member; + break; + } + } + + return data; + }; + + itself.jshint = itself; + + return itself; +}()); + +// Make JSHINT a Node module, if possible. +if (typeof exports === "object" && exports) { + exports.JSHINT = JSHINT; } -Lexer.prototype = { - _lines: [], +})() +},{"events":2,"./vars.js":3,"./messages.js":7,"./lex.js":9,"./reg.js":4,"./state.js":5,"./style.js":6,"console-browserify":10,"underscore":8}],8:[function(require,module,exports){ +(function(){// Underscore.js 1.4.4 +// http://underscorejs.org +// (c) 2009-2013 Jeremy Ashkenas, DocumentCloud Inc. +// Underscore may be freely distributed under the MIT license. - get lines() { - this._lines = state.lines; - return this._lines; - }, +(function() { - set lines(val) { - this._lines = val; - state.lines = this._lines; - }, + // Baseline setup + // -------------- - /* - * Return the next i character without actually moving the - * char pointer. - */ - peek: function (i) { - return this.input.charAt(i || 0); - }, + // Establish the root object, `window` in the browser, or `global` on the server. + var root = this; - /* - * Move the char pointer forward i times. - */ - skip: function (i) { - i = i || 1; - this.char += i; - this.input = this.input.slice(i); - }, + // Save the previous value of the `_` variable. + var previousUnderscore = root._; + + // Establish the object that gets returned to break out of a loop iteration. + var breaker = {}; + + // Save bytes in the minified (but not gzipped) version: + var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype; + + // Create quick reference variables for speed access to core prototypes. + var push = ArrayProto.push, + slice = ArrayProto.slice, + concat = ArrayProto.concat, + toString = ObjProto.toString, + hasOwnProperty = ObjProto.hasOwnProperty; - /* - * Subscribe to a token event. The API for this method is similar - * Underscore.js i.e. you can subscribe to multiple events with - * one call: - * - * lex.on("Identifier Number", function (data) { - * // ... - * }); - */ - on: function (names, listener) { - names.split(" ").forEach(function (name) { - this.emitter.on(name, listener); - }.bind(this)); - }, + // All **ECMAScript 5** native function implementations that we hope to use + // are declared here. + var + nativeForEach = ArrayProto.forEach, + nativeMap = ArrayProto.map, + nativeReduce = ArrayProto.reduce, + nativeReduceRight = ArrayProto.reduceRight, + nativeFilter = ArrayProto.filter, + nativeEvery = ArrayProto.every, + nativeSome = ArrayProto.some, + nativeIndexOf = ArrayProto.indexOf, + nativeLastIndexOf = ArrayProto.lastIndexOf, + nativeIsArray = Array.isArray, + nativeKeys = Object.keys, + nativeBind = FuncProto.bind; - /* - * Trigger a token event. All arguments will be passed to each - * listener. - */ - trigger: function () { - this.emitter.emit.apply(this.emitter, Array.prototype.slice.call(arguments)); - }, + // Create a safe reference to the Underscore object for use below. + var _ = function(obj) { + if (obj instanceof _) return obj; + if (!(this instanceof _)) return new _(obj); + this._wrapped = obj; + }; - /* - * Postpone a token event. the checking condition is set as - * last parameter, and the trigger function is called in a - * stored callback. To be later called using the check() function - * by the parser. This avoids parser's peek() to give the lexer - * a false context. - */ - triggerAsync: function (type, args, checks, fn) { - checks.push(function () { - if (fn()) { - this.trigger(type, args); - } - }.bind(this)); - }, + // Export the Underscore object for **Node.js**, with + // backwards-compatibility for the old `require()` API. If we're in + // the browser, add `_` as a global object via a string identifier, + // for Closure Compiler "advanced" mode. + if (typeof exports !== 'undefined') { + if (typeof module !== 'undefined' && module.exports) { + exports = module.exports = _; + } + exports._ = _; + } else { + root._ = _; + } - /* - * Extract a punctuator out of the next sequence of characters - * or return 'null' if its not possible. - * - * This method's implementation was heavily influenced by the - * scanPunctuator function in the Esprima parser's source code. - */ - scanPunctuator: function () { - var ch1 = this.peek(); - var ch2, ch3, ch4; + // Current version. + _.VERSION = '1.4.4'; - switch (ch1) { - // Most common single-character punctuators - case ".": - if ((/^[0-9]$/).test(this.peek(1))) { - return null; - } - if (this.peek(1) === "." && this.peek(2) === ".") { - return { - type: Token.Punctuator, - value: "..." - }; - } - /* falls through */ - case "(": - case ")": - case ";": - case ",": - case "{": - case "}": - case "[": - case "]": - case ":": - case "~": - case "?": - return { - type: Token.Punctuator, - value: ch1 - }; + // Collection Functions + // -------------------- - // A pound sign (for Node shebangs) - case "#": - return { - type: Token.Punctuator, - value: ch1 - }; + // The cornerstone, an `each` implementation, aka `forEach`. + // Handles objects with the built-in `forEach`, arrays, and raw objects. + // Delegates to **ECMAScript 5**'s native `forEach` if available. + var each = _.each = _.forEach = function(obj, iterator, context) { + if (obj == null) return; + if (nativeForEach && obj.forEach === nativeForEach) { + obj.forEach(iterator, context); + } else if (obj.length === +obj.length) { + for (var i = 0, l = obj.length; i < l; i++) { + if (iterator.call(context, obj[i], i, obj) === breaker) return; + } + } else { + for (var key in obj) { + if (_.has(obj, key)) { + if (iterator.call(context, obj[key], key, obj) === breaker) return; + } + } + } + }; - // We're at the end of input - case "": - return null; - } + // Return the results of applying the iterator to each element. + // Delegates to **ECMAScript 5**'s native `map` if available. + _.map = _.collect = function(obj, iterator, context) { + var results = []; + if (obj == null) return results; + if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context); + each(obj, function(value, index, list) { + results[results.length] = iterator.call(context, value, index, list); + }); + return results; + }; - // Peek more characters + var reduceError = 'Reduce of empty array with no initial value'; - ch2 = this.peek(1); - ch3 = this.peek(2); - ch4 = this.peek(3); + // **Reduce** builds up a single result from a list of values, aka `inject`, + // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available. + _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) { + var initial = arguments.length > 2; + if (obj == null) obj = []; + if (nativeReduce && obj.reduce === nativeReduce) { + if (context) iterator = _.bind(iterator, context); + return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator); + } + each(obj, function(value, index, list) { + if (!initial) { + memo = value; + initial = true; + } else { + memo = iterator.call(context, memo, value, index, list); + } + }); + if (!initial) throw new TypeError(reduceError); + return memo; + }; - // 4-character punctuator: >>>= + // The right-associative version of reduce, also known as `foldr`. + // Delegates to **ECMAScript 5**'s native `reduceRight` if available. + _.reduceRight = _.foldr = function(obj, iterator, memo, context) { + var initial = arguments.length > 2; + if (obj == null) obj = []; + if (nativeReduceRight && obj.reduceRight === nativeReduceRight) { + if (context) iterator = _.bind(iterator, context); + return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator); + } + var length = obj.length; + if (length !== +length) { + var keys = _.keys(obj); + length = keys.length; + } + each(obj, function(value, index, list) { + index = keys ? keys[--length] : --length; + if (!initial) { + memo = obj[index]; + initial = true; + } else { + memo = iterator.call(context, memo, obj[index], index, list); + } + }); + if (!initial) throw new TypeError(reduceError); + return memo; + }; - if (ch1 === ">" && ch2 === ">" && ch3 === ">" && ch4 === "=") { - return { - type: Token.Punctuator, - value: ">>>=" - }; - } + // Return the first value which passes a truth test. Aliased as `detect`. + _.find = _.detect = function(obj, iterator, context) { + var result; + any(obj, function(value, index, list) { + if (iterator.call(context, value, index, list)) { + result = value; + return true; + } + }); + return result; + }; - // 3-character punctuators: === !== >>> <<= >>= + // Return all the elements that pass a truth test. + // Delegates to **ECMAScript 5**'s native `filter` if available. + // Aliased as `select`. + _.filter = _.select = function(obj, iterator, context) { + var results = []; + if (obj == null) return results; + if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context); + each(obj, function(value, index, list) { + if (iterator.call(context, value, index, list)) results[results.length] = value; + }); + return results; + }; - if (ch1 === "=" && ch2 === "=" && ch3 === "=") { - return { - type: Token.Punctuator, - value: "===" - }; - } + // Return all the elements for which a truth test fails. + _.reject = function(obj, iterator, context) { + return _.filter(obj, function(value, index, list) { + return !iterator.call(context, value, index, list); + }, context); + }; - if (ch1 === "!" && ch2 === "=" && ch3 === "=") { - return { - type: Token.Punctuator, - value: "!==" - }; - } + // Determine whether all of the elements match a truth test. + // Delegates to **ECMAScript 5**'s native `every` if available. + // Aliased as `all`. + _.every = _.all = function(obj, iterator, context) { + iterator || (iterator = _.identity); + var result = true; + if (obj == null) return result; + if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context); + each(obj, function(value, index, list) { + if (!(result = result && iterator.call(context, value, index, list))) return breaker; + }); + return !!result; + }; - if (ch1 === ">" && ch2 === ">" && ch3 === ">") { - return { - type: Token.Punctuator, - value: ">>>" - }; - } + // Determine if at least one element in the object matches a truth test. + // Delegates to **ECMAScript 5**'s native `some` if available. + // Aliased as `any`. + var any = _.some = _.any = function(obj, iterator, context) { + iterator || (iterator = _.identity); + var result = false; + if (obj == null) return result; + if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context); + each(obj, function(value, index, list) { + if (result || (result = iterator.call(context, value, index, list))) return breaker; + }); + return !!result; + }; - if (ch1 === "<" && ch2 === "<" && ch3 === "=") { - return { - type: Token.Punctuator, - value: "<<=" - }; - } + // Determine if the array or object contains a given value (using `===`). + // Aliased as `include`. + _.contains = _.include = function(obj, target) { + if (obj == null) return false; + if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1; + return any(obj, function(value) { + return value === target; + }); + }; - if (ch1 === ">" && ch2 === ">" && ch3 === "=") { - return { - type: Token.Punctuator, - value: ">>=" - }; - } + // Invoke a method (with arguments) on every item in a collection. + _.invoke = function(obj, method) { + var args = slice.call(arguments, 2); + var isFunc = _.isFunction(method); + return _.map(obj, function(value) { + return (isFunc ? method : value[method]).apply(value, args); + }); + }; - // Fat arrow punctuator - if (ch1 === "=" && ch2 === ">") { - return { - type: Token.Punctuator, - value: ch1 + ch2 - }; - } + // Convenience version of a common use case of `map`: fetching a property. + _.pluck = function(obj, key) { + return _.map(obj, function(value){ return value[key]; }); + }; - // 2-character punctuators: <= >= == != ++ -- << >> && || - // += -= *= %= &= |= ^= (but not /=, see below) - if (ch1 === ch2 && ("+-<>&|".indexOf(ch1) >= 0)) { - return { - type: Token.Punctuator, - value: ch1 + ch2 - }; - } + // Convenience version of a common use case of `filter`: selecting only objects + // containing specific `key:value` pairs. + _.where = function(obj, attrs, first) { + if (_.isEmpty(attrs)) return first ? null : []; + return _[first ? 'find' : 'filter'](obj, function(value) { + for (var key in attrs) { + if (attrs[key] !== value[key]) return false; + } + return true; + }); + }; - if ("<>=!+-*%&|^".indexOf(ch1) >= 0) { - if (ch2 === "=") { - return { - type: Token.Punctuator, - value: ch1 + ch2 - }; - } + // Convenience version of a common use case of `find`: getting the first object + // containing specific `key:value` pairs. + _.findWhere = function(obj, attrs) { + return _.where(obj, attrs, true); + }; - return { - type: Token.Punctuator, - value: ch1 - }; - } + // Return the maximum element or (element-based computation). + // Can't optimize arrays of integers longer than 65,535 elements. + // See: https://bugs.webkit.org/show_bug.cgi?id=80797 + _.max = function(obj, iterator, context) { + if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) { + return Math.max.apply(Math, obj); + } + if (!iterator && _.isEmpty(obj)) return -Infinity; + var result = {computed : -Infinity, value: -Infinity}; + each(obj, function(value, index, list) { + var computed = iterator ? iterator.call(context, value, index, list) : value; + computed >= result.computed && (result = {value : value, computed : computed}); + }); + return result.value; + }; - // Special case: /=. We need to make sure that this is an - // operator and not a regular expression. + // Return the minimum element (or element-based computation). + _.min = function(obj, iterator, context) { + if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) { + return Math.min.apply(Math, obj); + } + if (!iterator && _.isEmpty(obj)) return Infinity; + var result = {computed : Infinity, value: Infinity}; + each(obj, function(value, index, list) { + var computed = iterator ? iterator.call(context, value, index, list) : value; + computed < result.computed && (result = {value : value, computed : computed}); + }); + return result.value; + }; - if (ch1 === "/") { - if (ch2 === "=" && /\/=(?!(\S*\/[gim]?))/.test(this.input)) { - // /= is not a part of a regular expression, return it as a - // punctuator. - return { - type: Token.Punctuator, - value: "/=" - }; - } + // Shuffle an array. + _.shuffle = function(obj) { + var rand; + var index = 0; + var shuffled = []; + each(obj, function(value) { + rand = _.random(index++); + shuffled[index - 1] = shuffled[rand]; + shuffled[rand] = value; + }); + return shuffled; + }; - return { - type: Token.Punctuator, - value: "/" - }; - } + // An internal function to generate lookup iterators. + var lookupIterator = function(value) { + return _.isFunction(value) ? value : function(obj){ return obj[value]; }; + }; - return null; - }, + // Sort the object's values by a criterion produced by an iterator. + _.sortBy = function(obj, value, context) { + var iterator = lookupIterator(value); + return _.pluck(_.map(obj, function(value, index, list) { + return { + value : value, + index : index, + criteria : iterator.call(context, value, index, list) + }; + }).sort(function(left, right) { + var a = left.criteria; + var b = right.criteria; + if (a !== b) { + if (a > b || a === void 0) return 1; + if (a < b || b === void 0) return -1; + } + return left.index < right.index ? -1 : 1; + }), 'value'); + }; - /* - * Extract a comment out of the next sequence of characters and/or - * lines or return 'null' if its not possible. Since comments can - * span across multiple lines this method has to move the char - * pointer. - * - * In addition to normal JavaScript comments (// and /*) this method - * also recognizes JSHint- and JSLint-specific comments such as - * /*jshint, /*jslint, /*globals and so on. - */ - scanComments: function () { - var ch1 = this.peek(); - var ch2 = this.peek(1); - var rest = this.input.substr(2); - var startLine = this.line; - var startChar = this.char; + // An internal function used for aggregate "group by" operations. + var group = function(obj, value, context, behavior) { + var result = {}; + var iterator = lookupIterator(value || _.identity); + each(obj, function(value, index) { + var key = iterator.call(context, value, index, obj); + behavior(result, key, value); + }); + return result; + }; - // Create a comment token object and make sure it - // has all the data JSHint needs to work with special - // comments. + // Groups the object's values by a criterion. Pass either a string attribute + // to group by, or a function that returns the criterion. + _.groupBy = function(obj, value, context) { + return group(obj, value, context, function(result, key, value) { + (_.has(result, key) ? result[key] : (result[key] = [])).push(value); + }); + }; - function commentToken(label, body, opt) { - var special = ["jshint", "jslint", "members", "member", "globals", "global", "exported"]; - var isSpecial = false; - var value = label + body; - var commentType = "plain"; - opt = opt || {}; + // Counts instances of an object that group by a certain criterion. Pass + // either a string attribute to count by, or a function that returns the + // criterion. + _.countBy = function(obj, value, context) { + return group(obj, value, context, function(result, key) { + if (!_.has(result, key)) result[key] = 0; + result[key]++; + }); + }; - if (opt.isMultiline) { - value += "*/"; - } + // Use a comparator function to figure out the smallest index at which + // an object should be inserted so as to maintain order. Uses binary search. + _.sortedIndex = function(array, obj, iterator, context) { + iterator = iterator == null ? _.identity : lookupIterator(iterator); + var value = iterator.call(context, obj); + var low = 0, high = array.length; + while (low < high) { + var mid = (low + high) >>> 1; + iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid; + } + return low; + }; - special.forEach(function (str) { - if (isSpecial) { - return; - } + // Safely convert anything iterable into a real, live array. + _.toArray = function(obj) { + if (!obj) return []; + if (_.isArray(obj)) return slice.call(obj); + if (obj.length === +obj.length) return _.map(obj, _.identity); + return _.values(obj); + }; - // Don't recognize any special comments other than jshint for single-line - // comments. This introduced many problems with legit comments. - if (label === "//" && str !== "jshint") { - return; - } + // Return the number of elements in an object. + _.size = function(obj) { + if (obj == null) return 0; + return (obj.length === +obj.length) ? obj.length : _.keys(obj).length; + }; - if (body.substr(0, str.length) === str) { - isSpecial = true; - label = label + str; - body = body.substr(str.length); - } + // Array Functions + // --------------- - if (!isSpecial && body.charAt(0) === " " && body.substr(1, str.length) === str) { - isSpecial = true; - label = label + " " + str; - body = body.substr(str.length + 1); - } + // Get the first element of an array. Passing **n** will return the first N + // values in the array. Aliased as `head` and `take`. The **guard** check + // allows it to work with `_.map`. + _.first = _.head = _.take = function(array, n, guard) { + if (array == null) return void 0; + return (n != null) && !guard ? slice.call(array, 0, n) : array[0]; + }; - if (!isSpecial) { - return; - } + // Returns everything but the last entry of the array. Especially useful on + // the arguments object. Passing **n** will return all the values in + // the array, excluding the last N. The **guard** check allows it to work with + // `_.map`. + _.initial = function(array, n, guard) { + return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n)); + }; - switch (str) { - case "member": - commentType = "members"; - break; - case "global": - commentType = "globals"; - break; - default: - commentType = str; - } - }); + // Get the last element of an array. Passing **n** will return the last N + // values in the array. The **guard** check allows it to work with `_.map`. + _.last = function(array, n, guard) { + if (array == null) return void 0; + if ((n != null) && !guard) { + return slice.call(array, Math.max(array.length - n, 0)); + } else { + return array[array.length - 1]; + } + }; - return { - type: Token.Comment, - commentType: commentType, - value: value, - body: body, - isSpecial: isSpecial, - isMultiline: opt.isMultiline || false, - isMalformed: opt.isMalformed || false - }; - } + // Returns everything but the first entry of the array. Aliased as `tail` and `drop`. + // Especially useful on the arguments object. Passing an **n** will return + // the rest N values in the array. The **guard** + // check allows it to work with `_.map`. + _.rest = _.tail = _.drop = function(array, n, guard) { + return slice.call(array, (n == null) || guard ? 1 : n); + }; - // End of unbegun comment. Raise an error and skip that input. - if (ch1 === "*" && ch2 === "/") { - this.trigger("error", { - code: "E018", - line: startLine, - character: startChar - }); + // Trim out all falsy values from an array. + _.compact = function(array) { + return _.filter(array, _.identity); + }; - this.skip(2); - return null; - } + // Internal implementation of a recursive `flatten` function. + var flatten = function(input, shallow, output) { + each(input, function(value) { + if (_.isArray(value)) { + shallow ? push.apply(output, value) : flatten(value, shallow, output); + } else { + output.push(value); + } + }); + return output; + }; - // Comments must start either with // or /* - if (ch1 !== "/" || (ch2 !== "*" && ch2 !== "/")) { - return null; - } + // Return a completely flattened version of an array. + _.flatten = function(array, shallow) { + return flatten(array, shallow, []); + }; - // One-line comment - if (ch2 === "/") { - this.skip(this.input.length); // Skip to the EOL. - return commentToken("//", rest); - } + // Return a version of the array that does not contain the specified value(s). + _.without = function(array) { + return _.difference(array, slice.call(arguments, 1)); + }; - var body = ""; + // Produce a duplicate-free version of the array. If the array has already + // been sorted, you have the option of using a faster algorithm. + // Aliased as `unique`. + _.uniq = _.unique = function(array, isSorted, iterator, context) { + if (_.isFunction(isSorted)) { + context = iterator; + iterator = isSorted; + isSorted = false; + } + var initial = iterator ? _.map(array, iterator, context) : array; + var results = []; + var seen = []; + each(initial, function(value, index) { + if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) { + seen.push(value); + results.push(array[index]); + } + }); + return results; + }; - /* Multi-line comment */ - if (ch2 === "*") { - this.skip(2); + // Produce an array that contains the union: each distinct element from all of + // the passed-in arrays. + _.union = function() { + return _.uniq(concat.apply(ArrayProto, arguments)); + }; - while (this.peek() !== "*" || this.peek(1) !== "/") { - if (this.peek() === "") { // End of Line - body += "\n"; + // Produce an array that contains every item shared between all the + // passed-in arrays. + _.intersection = function(array) { + var rest = slice.call(arguments, 1); + return _.filter(_.uniq(array), function(item) { + return _.every(rest, function(other) { + return _.indexOf(other, item) >= 0; + }); + }); + }; - // If we hit EOF and our comment is still unclosed, - // trigger an error and end the comment implicitly. - if (!this.nextLine()) { - this.trigger("error", { - code: "E017", - line: startLine, - character: startChar - }); + // Take the difference between one array and a number of other arrays. + // Only the elements present in just the first array will remain. + _.difference = function(array) { + var rest = concat.apply(ArrayProto, slice.call(arguments, 1)); + return _.filter(array, function(value){ return !_.contains(rest, value); }); + }; - return commentToken("/*", body, { - isMultiline: true, - isMalformed: true - }); - } - } else { - body += this.peek(); - this.skip(); - } - } + // Zip together multiple lists into a single array -- elements that share + // an index go together. + _.zip = function() { + var args = slice.call(arguments); + var length = _.max(_.pluck(args, 'length')); + var results = new Array(length); + for (var i = 0; i < length; i++) { + results[i] = _.pluck(args, "" + i); + } + return results; + }; - this.skip(2); - return commentToken("/*", body, { isMultiline: true }); - } - }, + // Converts lists into objects. Pass either a single array of `[key, value]` + // pairs, or two parallel arrays of the same length -- one of keys, and one of + // the corresponding values. + _.object = function(list, values) { + if (list == null) return {}; + var result = {}; + for (var i = 0, l = list.length; i < l; i++) { + if (values) { + result[list[i]] = values[i]; + } else { + result[list[i][0]] = list[i][1]; + } + } + return result; + }; - /* - * Extract a keyword out of the next sequence of characters or - * return 'null' if its not possible. - */ - scanKeyword: function () { - var result = /^[a-zA-Z_$][a-zA-Z0-9_$]*/.exec(this.input); - var keywords = [ - "if", "in", "do", "var", "for", "new", - "try", "let", "this", "else", "case", - "void", "with", "enum", "while", "break", - "catch", "throw", "const", "yield", "class", - "super", "return", "typeof", "delete", - "switch", "export", "import", "default", - "finally", "extends", "function", "continue", - "debugger", "instanceof" - ]; + // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**), + // we need this function. Return the position of the first occurrence of an + // item in an array, or -1 if the item is not included in the array. + // Delegates to **ECMAScript 5**'s native `indexOf` if available. + // If the array is large and already in sort order, pass `true` + // for **isSorted** to use binary search. + _.indexOf = function(array, item, isSorted) { + if (array == null) return -1; + var i = 0, l = array.length; + if (isSorted) { + if (typeof isSorted == 'number') { + i = (isSorted < 0 ? Math.max(0, l + isSorted) : isSorted); + } else { + i = _.sortedIndex(array, item); + return array[i] === item ? i : -1; + } + } + if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted); + for (; i < l; i++) if (array[i] === item) return i; + return -1; + }; - if (result && keywords.indexOf(result[0]) >= 0) { - return { - type: Token.Keyword, - value: result[0] - }; - } + // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available. + _.lastIndexOf = function(array, item, from) { + if (array == null) return -1; + var hasIndex = from != null; + if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) { + return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item); + } + var i = (hasIndex ? from : array.length); + while (i--) if (array[i] === item) return i; + return -1; + }; - return null; - }, + // Generate an integer Array containing an arithmetic progression. A port of + // the native Python `range()` function. See + // [the Python documentation](http://docs.python.org/library/functions.html#range). + _.range = function(start, stop, step) { + if (arguments.length <= 1) { + stop = start || 0; + start = 0; + } + step = arguments[2] || 1; - /* - * Extract a JavaScript identifier out of the next sequence of - * characters or return 'null' if its not possible. In addition, - * to Identifier this method can also produce BooleanLiteral - * (true/false) and NullLiteral (null). - */ - scanIdentifier: function () { - var id = ""; - var index = 0; - var type, char; + var len = Math.max(Math.ceil((stop - start) / step), 0); + var idx = 0; + var range = new Array(len); - // Detects any character in the Unicode categories "Uppercase - // letter (Lu)", "Lowercase letter (Ll)", "Titlecase letter - // (Lt)", "Modifier letter (Lm)", "Other letter (Lo)", or - // "Letter number (Nl)". - // - // Both approach and unicodeLetterTable were borrowed from - // Google's Traceur. + while(idx < len) { + range[idx++] = start; + start += step; + } - function isUnicodeLetter(code) { - for (var i = 0; i < unicodeLetterTable.length;) { - if (code < unicodeLetterTable[i++]) { - return false; - } + return range; + }; - if (code <= unicodeLetterTable[i++]) { - return true; - } - } + // Function (ahem) Functions + // ------------------ - return false; - } + // Create a function bound to a given object (assigning `this`, and arguments, + // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if + // available. + _.bind = function(func, context) { + if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1)); + var args = slice.call(arguments, 2); + return function() { + return func.apply(context, args.concat(slice.call(arguments))); + }; + }; - function isHexDigit(str) { - return (/^[0-9a-fA-F]$/).test(str); - } + // Partially apply a function by creating a version that has had some of its + // arguments pre-filled, without changing its dynamic `this` context. + _.partial = function(func) { + var args = slice.call(arguments, 1); + return function() { + return func.apply(this, args.concat(slice.call(arguments))); + }; + }; - var readUnicodeEscapeSequence = function () { - /*jshint validthis:true */ - index += 1; + // Bind all of an object's methods to that object. Useful for ensuring that + // all callbacks defined on an object belong to it. + _.bindAll = function(obj) { + var funcs = slice.call(arguments, 1); + if (funcs.length === 0) funcs = _.functions(obj); + each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); }); + return obj; + }; - if (this.peek(index) !== "u") { - return null; - } + // Memoize an expensive function by storing its results. + _.memoize = function(func, hasher) { + var memo = {}; + hasher || (hasher = _.identity); + return function() { + var key = hasher.apply(this, arguments); + return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments)); + }; + }; - var ch1 = this.peek(index + 1); - var ch2 = this.peek(index + 2); - var ch3 = this.peek(index + 3); - var ch4 = this.peek(index + 4); - var code; + // Delays a function for the given number of milliseconds, and then calls + // it with the arguments supplied. + _.delay = function(func, wait) { + var args = slice.call(arguments, 2); + return setTimeout(function(){ return func.apply(null, args); }, wait); + }; - if (isHexDigit(ch1) && isHexDigit(ch2) && isHexDigit(ch3) && isHexDigit(ch4)) { - code = parseInt(ch1 + ch2 + ch3 + ch4, 16); + // Defers a function, scheduling it to run after the current call stack has + // cleared. + _.defer = function(func) { + return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1))); + }; - if (isUnicodeLetter(code)) { - index += 5; - return "\\u" + ch1 + ch2 + ch3 + ch4; - } + // Returns a function, that, when invoked, will only be triggered at most once + // during a given window of time. + _.throttle = function(func, wait) { + var context, args, timeout, result; + var previous = 0; + var later = function() { + previous = new Date; + timeout = null; + result = func.apply(context, args); + }; + return function() { + var now = new Date; + var remaining = wait - (now - previous); + context = this; + args = arguments; + if (remaining <= 0) { + clearTimeout(timeout); + timeout = null; + previous = now; + result = func.apply(context, args); + } else if (!timeout) { + timeout = setTimeout(later, remaining); + } + return result; + }; + }; - return null; - } + // Returns a function, that, as long as it continues to be invoked, will not + // be triggered. The function will be called after it stops being called for + // N milliseconds. If `immediate` is passed, trigger the function on the + // leading edge, instead of the trailing. + _.debounce = function(func, wait, immediate) { + var timeout, result; + return function() { + var context = this, args = arguments; + var later = function() { + timeout = null; + if (!immediate) result = func.apply(context, args); + }; + var callNow = immediate && !timeout; + clearTimeout(timeout); + timeout = setTimeout(later, wait); + if (callNow) result = func.apply(context, args); + return result; + }; + }; - return null; - }.bind(this); + // Returns a function that will be executed at most one time, no matter how + // often you call it. Useful for lazy initialization. + _.once = function(func) { + var ran = false, memo; + return function() { + if (ran) return memo; + ran = true; + memo = func.apply(this, arguments); + func = null; + return memo; + }; + }; - var getIdentifierStart = function () { - /*jshint validthis:true */ - var chr = this.peek(index); - var code = chr.charCodeAt(0); + // Returns the first function passed as an argument to the second, + // allowing you to adjust arguments, run code before and after, and + // conditionally execute the original function. + _.wrap = function(func, wrapper) { + return function() { + var args = [func]; + push.apply(args, arguments); + return wrapper.apply(this, args); + }; + }; - if (code === 92) { - return readUnicodeEscapeSequence(); - } + // Returns a function that is the composition of a list of functions, each + // consuming the return value of the function that follows. + _.compose = function() { + var funcs = arguments; + return function() { + var args = arguments; + for (var i = funcs.length - 1; i >= 0; i--) { + args = [funcs[i].apply(this, args)]; + } + return args[0]; + }; + }; - if (code < 128) { - if (identifierStartTable[code]) { - index += 1; - return chr; - } + // Returns a function that will only be executed after being called N times. + _.after = function(times, func) { + if (times <= 0) return func(); + return function() { + if (--times < 1) { + return func.apply(this, arguments); + } + }; + }; - return null; - } + // Object Functions + // ---------------- - if (isUnicodeLetter(code)) { - index += 1; - return chr; - } + // Retrieve the names of an object's properties. + // Delegates to **ECMAScript 5**'s native `Object.keys` + _.keys = nativeKeys || function(obj) { + if (obj !== Object(obj)) throw new TypeError('Invalid object'); + var keys = []; + for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key; + return keys; + }; - return null; - }.bind(this); + // Retrieve the values of an object's properties. + _.values = function(obj) { + var values = []; + for (var key in obj) if (_.has(obj, key)) values.push(obj[key]); + return values; + }; - var getIdentifierPart = function () { - /*jshint validthis:true */ - var chr = this.peek(index); - var code = chr.charCodeAt(0); + // Convert an object into a list of `[key, value]` pairs. + _.pairs = function(obj) { + var pairs = []; + for (var key in obj) if (_.has(obj, key)) pairs.push([key, obj[key]]); + return pairs; + }; - if (code === 92) { - return readUnicodeEscapeSequence(); - } + // Invert the keys and values of an object. The values must be serializable. + _.invert = function(obj) { + var result = {}; + for (var key in obj) if (_.has(obj, key)) result[obj[key]] = key; + return result; + }; - if (code < 128) { - if (identifierPartTable[code]) { - index += 1; - return chr; - } + // Return a sorted list of the function names available on the object. + // Aliased as `methods` + _.functions = _.methods = function(obj) { + var names = []; + for (var key in obj) { + if (_.isFunction(obj[key])) names.push(key); + } + return names.sort(); + }; - return null; - } + // Extend a given object with all the properties in passed-in object(s). + _.extend = function(obj) { + each(slice.call(arguments, 1), function(source) { + if (source) { + for (var prop in source) { + obj[prop] = source[prop]; + } + } + }); + return obj; + }; - if (isUnicodeLetter(code)) { - index += 1; - return chr; - } + // Return a copy of the object only containing the whitelisted properties. + _.pick = function(obj) { + var copy = {}; + var keys = concat.apply(ArrayProto, slice.call(arguments, 1)); + each(keys, function(key) { + if (key in obj) copy[key] = obj[key]; + }); + return copy; + }; - return null; - }.bind(this); + // Return a copy of the object without the blacklisted properties. + _.omit = function(obj) { + var copy = {}; + var keys = concat.apply(ArrayProto, slice.call(arguments, 1)); + for (var key in obj) { + if (!_.contains(keys, key)) copy[key] = obj[key]; + } + return copy; + }; - char = getIdentifierStart(); - if (char === null) { - return null; - } + // Fill in a given object with default properties. + _.defaults = function(obj) { + each(slice.call(arguments, 1), function(source) { + if (source) { + for (var prop in source) { + if (obj[prop] == null) obj[prop] = source[prop]; + } + } + }); + return obj; + }; - id = char; - for (;;) { - char = getIdentifierPart(); + // Create a (shallow-cloned) duplicate of an object. + _.clone = function(obj) { + if (!_.isObject(obj)) return obj; + return _.isArray(obj) ? obj.slice() : _.extend({}, obj); + }; - if (char === null) { - break; - } + // Invokes interceptor with the obj, and then returns obj. + // The primary purpose of this method is to "tap into" a method chain, in + // order to perform operations on intermediate results within the chain. + _.tap = function(obj, interceptor) { + interceptor(obj); + return obj; + }; - id += char; - } + // Internal recursive comparison function for `isEqual`. + var eq = function(a, b, aStack, bStack) { + // Identical objects are equal. `0 === -0`, but they aren't identical. + // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal. + if (a === b) return a !== 0 || 1 / a == 1 / b; + // A strict comparison is necessary because `null == undefined`. + if (a == null || b == null) return a === b; + // Unwrap any wrapped objects. + if (a instanceof _) a = a._wrapped; + if (b instanceof _) b = b._wrapped; + // Compare `[[Class]]` names. + var className = toString.call(a); + if (className != toString.call(b)) return false; + switch (className) { + // Strings, numbers, dates, and booleans are compared by value. + case '[object String]': + // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is + // equivalent to `new String("5")`. + return a == String(b); + case '[object Number]': + // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for + // other numeric values. + return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b); + case '[object Date]': + case '[object Boolean]': + // Coerce dates and booleans to numeric primitive values. Dates are compared by their + // millisecond representations. Note that invalid dates with millisecond representations + // of `NaN` are not equivalent. + return +a == +b; + // RegExps are compared by their source patterns and flags. + case '[object RegExp]': + return a.source == b.source && + a.global == b.global && + a.multiline == b.multiline && + a.ignoreCase == b.ignoreCase; + } + if (typeof a != 'object' || typeof b != 'object') return false; + // Assume equality for cyclic structures. The algorithm for detecting cyclic + // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`. + var length = aStack.length; + while (length--) { + // Linear search. Performance is inversely proportional to the number of + // unique nested structures. + if (aStack[length] == a) return bStack[length] == b; + } + // Add the first object to the stack of traversed objects. + aStack.push(a); + bStack.push(b); + var size = 0, result = true; + // Recursively compare objects and arrays. + if (className == '[object Array]') { + // Compare array lengths to determine if a deep comparison is necessary. + size = a.length; + result = size == b.length; + if (result) { + // Deep compare the contents, ignoring non-numeric properties. + while (size--) { + if (!(result = eq(a[size], b[size], aStack, bStack))) break; + } + } + } else { + // Objects with different constructors are not equivalent, but `Object`s + // from different frames are. + var aCtor = a.constructor, bCtor = b.constructor; + if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) && + _.isFunction(bCtor) && (bCtor instanceof bCtor))) { + return false; + } + // Deep compare objects. + for (var key in a) { + if (_.has(a, key)) { + // Count the expected number of properties. + size++; + // Deep compare each member. + if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break; + } + } + // Ensure that both objects contain the same number of properties. + if (result) { + for (key in b) { + if (_.has(b, key) && !(size--)) break; + } + result = !size; + } + } + // Remove the first object from the stack of traversed objects. + aStack.pop(); + bStack.pop(); + return result; + }; - switch (id) { - case "true": - case "false": - type = Token.BooleanLiteral; - break; - case "null": - type = Token.NullLiteral; - break; - default: - type = Token.Identifier; - } + // Perform a deep comparison to check if two objects are equal. + _.isEqual = function(a, b) { + return eq(a, b, [], []); + }; - return { - type: type, - value: id - }; - }, + // Is a given array, string, or object empty? + // An "empty" object has no enumerable own-properties. + _.isEmpty = function(obj) { + if (obj == null) return true; + if (_.isArray(obj) || _.isString(obj)) return obj.length === 0; + for (var key in obj) if (_.has(obj, key)) return false; + return true; + }; - /* - * Extract a numeric literal out of the next sequence of - * characters or return 'null' if its not possible. This method - * supports all numeric literals described in section 7.8.3 - * of the EcmaScript 5 specification. - * - * This method's implementation was heavily influenced by the - * scanNumericLiteral function in the Esprima parser's source code. - */ - scanNumericLiteral: function () { - var index = 0; - var value = ""; - var length = this.input.length; - var char = this.peek(index); - var bad; + // Is a given value a DOM element? + _.isElement = function(obj) { + return !!(obj && obj.nodeType === 1); + }; + + // Is a given value an array? + // Delegates to ECMA5's native Array.isArray + _.isArray = nativeIsArray || function(obj) { + return toString.call(obj) == '[object Array]'; + }; - function isDecimalDigit(str) { - return (/^[0-9]$/).test(str); - } + // Is a given variable an object? + _.isObject = function(obj) { + return obj === Object(obj); + }; - function isOctalDigit(str) { - return (/^[0-7]$/).test(str); - } + // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp. + each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) { + _['is' + name] = function(obj) { + return toString.call(obj) == '[object ' + name + ']'; + }; + }); - function isHexDigit(str) { - return (/^[0-9a-fA-F]$/).test(str); - } + // Define a fallback version of the method in browsers (ahem, IE), where + // there isn't any inspectable "Arguments" type. + if (!_.isArguments(arguments)) { + _.isArguments = function(obj) { + return !!(obj && _.has(obj, 'callee')); + }; + } - function isIdentifierStart(ch) { - return (ch === "$") || (ch === "_") || (ch === "\\") || - (ch >= "a" && ch <= "z") || (ch >= "A" && ch <= "Z"); - } + // Optimize `isFunction` if appropriate. + if (typeof (/./) !== 'function') { + _.isFunction = function(obj) { + return typeof obj === 'function'; + }; + } - // Numbers must start either with a decimal digit or a point. + // Is a given object a finite number? + _.isFinite = function(obj) { + return isFinite(obj) && !isNaN(parseFloat(obj)); + }; - if (char !== "." && !isDecimalDigit(char)) { - return null; - } + // Is the given value `NaN`? (NaN is the only number which does not equal itself). + _.isNaN = function(obj) { + return _.isNumber(obj) && obj != +obj; + }; - if (char !== ".") { - value = this.peek(index); - index += 1; - char = this.peek(index); + // Is a given value a boolean? + _.isBoolean = function(obj) { + return obj === true || obj === false || toString.call(obj) == '[object Boolean]'; + }; - if (value === "0") { - // Base-16 numbers. - if (char === "x" || char === "X") { - index += 1; - value += char; + // Is a given value equal to null? + _.isNull = function(obj) { + return obj === null; + }; - while (index < length) { - char = this.peek(index); - if (!isHexDigit(char)) { - break; - } - value += char; - index += 1; - } + // Is a given variable undefined? + _.isUndefined = function(obj) { + return obj === void 0; + }; - if (value.length <= 2) { // 0x - return { - type: Token.NumericLiteral, - value: value, - isMalformed: true - }; - } + // Shortcut function for checking if an object has a given property directly + // on itself (in other words, not on a prototype). + _.has = function(obj, key) { + return hasOwnProperty.call(obj, key); + }; - if (index < length) { - char = this.peek(index); - if (isIdentifierStart(char)) { - return null; - } - } + // Utility Functions + // ----------------- - return { - type: Token.NumericLiteral, - value: value, - base: 16, - isMalformed: false - }; - } + // Run Underscore.js in *noConflict* mode, returning the `_` variable to its + // previous owner. Returns a reference to the Underscore object. + _.noConflict = function() { + root._ = previousUnderscore; + return this; + }; - // Base-8 numbers. - if (isOctalDigit(char)) { - index += 1; - value += char; - bad = false; + // Keep the identity function around for default iterators. + _.identity = function(value) { + return value; + }; - while (index < length) { - char = this.peek(index); + // Run a function **n** times. + _.times = function(n, iterator, context) { + var accum = Array(n); + for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i); + return accum; + }; - // Numbers like '019' (note the 9) are not valid octals - // but we still parse them and mark as malformed. + // Return a random integer between min and max (inclusive). + _.random = function(min, max) { + if (max == null) { + max = min; + min = 0; + } + return min + Math.floor(Math.random() * (max - min + 1)); + }; - if (isDecimalDigit(char)) { - bad = true; - } else if (!isOctalDigit(char)) { - break; - } - value += char; - index += 1; - } + // List of HTML entities for escaping. + var entityMap = { + escape: { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''', + '/': '/' + } + }; + entityMap.unescape = _.invert(entityMap.escape); - if (index < length) { - char = this.peek(index); - if (isIdentifierStart(char)) { - return null; - } - } + // Regexes containing the keys and values listed immediately above. + var entityRegexes = { + escape: new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'), + unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g') + }; - return { - type: Token.NumericLiteral, - value: value, - base: 8, - isMalformed: false - }; - } + // Functions for escaping and unescaping strings to/from HTML interpolation. + _.each(['escape', 'unescape'], function(method) { + _[method] = function(string) { + if (string == null) return ''; + return ('' + string).replace(entityRegexes[method], function(match) { + return entityMap[method][match]; + }); + }; + }); - // Decimal numbers that start with '0' such as '09' are illegal - // but we still parse them and return as malformed. + // If the value of the named property is a function then invoke it; + // otherwise, return it. + _.result = function(object, property) { + if (object == null) return null; + var value = object[property]; + return _.isFunction(value) ? value.call(object) : value; + }; - if (isDecimalDigit(char)) { - index += 1; - value += char; - } - } + // Add your own custom functions to the Underscore object. + _.mixin = function(obj) { + each(_.functions(obj), function(name){ + var func = _[name] = obj[name]; + _.prototype[name] = function() { + var args = [this._wrapped]; + push.apply(args, arguments); + return result.call(this, func.apply(_, args)); + }; + }); + }; - while (index < length) { - char = this.peek(index); - if (!isDecimalDigit(char)) { - break; - } - value += char; - index += 1; - } - } + // Generate a unique integer id (unique within the entire client session). + // Useful for temporary DOM ids. + var idCounter = 0; + _.uniqueId = function(prefix) { + var id = ++idCounter + ''; + return prefix ? prefix + id : id; + }; - // Decimal digits. + // By default, Underscore uses ERB-style template delimiters, change the + // following template settings to use alternative delimiters. + _.templateSettings = { + evaluate : /<%([\s\S]+?)%>/g, + interpolate : /<%=([\s\S]+?)%>/g, + escape : /<%-([\s\S]+?)%>/g + }; - if (char === ".") { - value += char; - index += 1; + // When customizing `templateSettings`, if you don't want to define an + // interpolation, evaluation or escaping regex, we need one that is + // guaranteed not to match. + var noMatch = /(.)^/; + + // Certain characters need to be escaped so that they can be put into a + // string literal. + var escapes = { + "'": "'", + '\\': '\\', + '\r': 'r', + '\n': 'n', + '\t': 't', + '\u2028': 'u2028', + '\u2029': 'u2029' + }; + + var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g; + + // JavaScript micro-templating, similar to John Resig's implementation. + // Underscore templating handles arbitrary delimiters, preserves whitespace, + // and correctly escapes quotes within interpolated code. + _.template = function(text, data, settings) { + var render; + settings = _.defaults({}, settings, _.templateSettings); - while (index < length) { - char = this.peek(index); - if (!isDecimalDigit(char)) { - break; - } - value += char; - index += 1; - } - } + // Combine delimiters into one regular expression via alternation. + var matcher = new RegExp([ + (settings.escape || noMatch).source, + (settings.interpolate || noMatch).source, + (settings.evaluate || noMatch).source + ].join('|') + '|$', 'g'); - // Exponent part. + // Compile the template source, escaping string literals appropriately. + var index = 0; + var source = "__p+='"; + text.replace(matcher, function(match, escape, interpolate, evaluate, offset) { + source += text.slice(index, offset) + .replace(escaper, function(match) { return '\\' + escapes[match]; }); - if (char === "e" || char === "E") { - value += char; - index += 1; - char = this.peek(index); + if (escape) { + source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'"; + } + if (interpolate) { + source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'"; + } + if (evaluate) { + source += "';\n" + evaluate + "\n__p+='"; + } + index = offset + match.length; + return match; + }); + source += "';\n"; - if (char === "+" || char === "-") { - value += this.peek(index); - index += 1; - } + // If a variable is not specified, place data values in local scope. + if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n'; - char = this.peek(index); - if (isDecimalDigit(char)) { - value += char; - index += 1; + source = "var __t,__p='',__j=Array.prototype.join," + + "print=function(){__p+=__j.call(arguments,'');};\n" + + source + "return __p;\n"; - while (index < length) { - char = this.peek(index); - if (!isDecimalDigit(char)) { - break; - } - value += char; - index += 1; - } - } else { - return null; - } - } + try { + render = new Function(settings.variable || 'obj', '_', source); + } catch (e) { + e.source = source; + throw e; + } - if (index < length) { - char = this.peek(index); - if (isIdentifierStart(char)) { - return null; - } - } + if (data) return render(data, _); + var template = function(data) { + return render.call(this, data, _); + }; - return { - type: Token.NumericLiteral, - value: value, - base: 10, - isMalformed: !isFinite(value) - }; - }, + // Provide the compiled function source as a convenience for precompilation. + template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}'; - /* - * Extract a string out of the next sequence of characters and/or - * lines or return 'null' if its not possible. Since strings can - * span across multiple lines this method has to move the char - * pointer. - * - * This method recognizes pseudo-multiline JavaScript strings: - * - * var str = "hello\ - * world"; - */ - scanStringLiteral: function (checks) { - /*jshint loopfunc:true */ - var quote = this.peek(); + return template; + }; - // String must start with a quote. - if (quote !== "\"" && quote !== "'") { - return null; - } + // Add a "chain" function, which will delegate to the wrapper. + _.chain = function(obj) { + return _(obj).chain(); + }; - // In JSON strings must always use double quotes. - this.triggerAsync("warning", { - code: "W108", - line: this.line, - character: this.char // +1? - }, checks, function () { return state.jsonMode && quote !== "\""; }); + // OOP + // --------------- + // If Underscore is called as a function, it returns a wrapped object that + // can be used OO-style. This wrapper holds altered versions of all the + // underscore functions. Wrapped objects may be chained. - var value = ""; - var startLine = this.line; - var startChar = this.char; - var allowNewLine = false; + // Helper function to continue chaining intermediate results. + var result = function(obj) { + return this._chain ? _(obj).chain() : obj; + }; - this.skip(); + // Add all of the Underscore functions to the wrapper object. + _.mixin(_); - while (this.peek() !== quote) { - while (this.peek() === "") { // End Of Line + // Add all mutator Array functions to the wrapper. + each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) { + var method = ArrayProto[name]; + _.prototype[name] = function() { + var obj = this._wrapped; + method.apply(obj, arguments); + if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0]; + return result.call(this, obj); + }; + }); - // If an EOL is not preceded by a backslash, show a warning - // and proceed like it was a legit multi-line string where - // author simply forgot to escape the newline symbol. - // - // Another approach is to implicitly close a string on EOL - // but it generates too many false positives. + // Add all accessor Array functions to the wrapper. + each(['concat', 'join', 'slice'], function(name) { + var method = ArrayProto[name]; + _.prototype[name] = function() { + return result.call(this, method.apply(this._wrapped, arguments)); + }; + }); - if (!allowNewLine) { - this.trigger("warning", { - code: "W112", - line: this.line, - character: this.char - }); - } else { - allowNewLine = false; + _.extend(_.prototype, { - // Otherwise show a warning if multistr option was not set. - // For JSON, show warning no matter what. + // Start chaining a wrapped Underscore object. + chain: function() { + this._chain = true; + return this; + }, - this.triggerAsync("warning", { - code: "W043", - line: this.line, - character: this.char - }, checks, function () { return !state.option.multistr; }); + // Extracts the result from a wrapped and chained object. + value: function() { + return this._wrapped; + } - this.triggerAsync("warning", { - code: "W042", - line: this.line, - character: this.char - }, checks, function () { return state.jsonMode && state.option.multistr; }); - } + }); - // If we get an EOF inside of an unclosed string, show an - // error and implicitly close it at the EOF point. +}).call(this); - if (!this.nextLine()) { - this.trigger("error", { - code: "E029", - line: startLine, - character: startChar - }); +})() +},{}],11:[function(require,module,exports){ +var events = require('events'); - return { - type: Token.StringLiteral, - value: value, - isUnclosed: true, - quote: quote - }; - } - } +exports.isArray = isArray; +exports.isDate = function(obj){return Object.prototype.toString.call(obj) === '[object Date]'}; +exports.isRegExp = function(obj){return Object.prototype.toString.call(obj) === '[object RegExp]'}; - allowNewLine = false; - var char = this.peek(); - var jump = 1; // A length of a jump, after we're done - // parsing this character. - if (char < " ") { - // Warn about a control character in a string. - this.trigger("warning", { - code: "W113", - line: this.line, - character: this.char, - data: [ "" ] - }); - } +exports.print = function () {}; +exports.puts = function () {}; +exports.debug = function() {}; - // Special treatment for some escaped characters. +exports.inspect = function(obj, showHidden, depth, colors) { + var seen = []; - if (char === "\\") { - this.skip(); - char = this.peek(); + var stylize = function(str, styleType) { + // http://en.wikipedia.org/wiki/ANSI_escape_code#graphics + var styles = + { 'bold' : [1, 22], + 'italic' : [3, 23], + 'underline' : [4, 24], + 'inverse' : [7, 27], + 'white' : [37, 39], + 'grey' : [90, 39], + 'black' : [30, 39], + 'blue' : [34, 39], + 'cyan' : [36, 39], + 'green' : [32, 39], + 'magenta' : [35, 39], + 'red' : [31, 39], + 'yellow' : [33, 39] }; - switch (char) { - case "'": - this.triggerAsync("warning", { - code: "W114", - line: this.line, - character: this.char, - data: [ "\\'" ] - }, checks, function () {return state.jsonMode; }); - break; - case "b": - char = "\b"; - break; - case "f": - char = "\f"; - break; - case "n": - char = "\n"; - break; - case "r": - char = "\r"; - break; - case "t": - char = "\t"; - break; - case "0": - char = "\0"; + var style = + { 'special': 'cyan', + 'number': 'blue', + 'boolean': 'yellow', + 'undefined': 'grey', + 'null': 'bold', + 'string': 'green', + 'date': 'magenta', + // "name": intentionally not styling + 'regexp': 'red' }[styleType]; - // Octal literals fail in strict mode. - // Check if the number is between 00 and 07. - var n = parseInt(this.peek(1), 10); - this.triggerAsync("warning", { - code: "W115", - line: this.line, - character: this.char - }, checks, - function () { return n >= 0 && n <= 7 && state.directive["use strict"]; }); - break; - case "u": - char = String.fromCharCode(parseInt(this.input.substr(1, 4), 16)); - jump = 5; - break; - case "v": - this.triggerAsync("warning", { - code: "W114", - line: this.line, - character: this.char, - data: [ "\\v" ] - }, checks, function () { return state.jsonMode; }); + if (style) { + return '\033[' + styles[style][0] + 'm' + str + + '\033[' + styles[style][1] + 'm'; + } else { + return str; + } + }; + if (! colors) { + stylize = function(str, styleType) { return str; }; + } - char = "\v"; - break; - case "x": - var x = parseInt(this.input.substr(1, 2), 16); + function format(value, recurseTimes) { + // Provide a hook for user-specified inspect functions. + // Check that value is an object with an inspect function on it + if (value && typeof value.inspect === 'function' && + // Filter out the util module, it's inspect function is special + value !== exports && + // Also filter out any prototype objects using the circular check. + !(value.constructor && value.constructor.prototype === value)) { + return value.inspect(recurseTimes); + } - this.triggerAsync("warning", { - code: "W114", - line: this.line, - character: this.char, - data: [ "\\x-" ] - }, checks, function () { return state.jsonMode; }); + // Primitive types cannot have properties + switch (typeof value) { + case 'undefined': + return stylize('undefined', 'undefined'); - char = String.fromCharCode(x); - jump = 3; - break; - case "\\": - case "\"": - case "/": - break; - case "": - allowNewLine = true; - char = ""; - break; - case "!": - if (value.slice(value.length - 2) === "<") { - break; - } + case 'string': + var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') + .replace(/'/g, "\\'") + .replace(/\\"/g, '"') + '\''; + return stylize(simple, 'string'); - /*falls through */ - default: - // Weird escaping. - this.trigger("warning", { - code: "W044", - line: this.line, - character: this.char - }); - } - } + case 'number': + return stylize('' + value, 'number'); - value += char; - this.skip(jump); - } + case 'boolean': + return stylize('' + value, 'boolean'); + } + // For some reason typeof null is "object", so special case here. + if (value === null) { + return stylize('null', 'null'); + } - this.skip(); - return { - type: Token.StringLiteral, - value: value, - isUnclosed: false, - quote: quote - }; - }, + // Look up the keys of the object. + var visible_keys = Object_keys(value); + var keys = showHidden ? Object_getOwnPropertyNames(value) : visible_keys; - /* - * Extract a regular expression out of the next sequence of - * characters and/or lines or return 'null' if its not possible. - * - * This method is platform dependent: it accepts almost any - * regular expression values but then tries to compile and run - * them using system's RegExp object. This means that there are - * rare edge cases where one JavaScript engine complains about - * your regular expression while others don't. - */ - scanRegExp: function () { - var index = 0; - var length = this.input.length; - var char = this.peek(); - var value = char; - var body = ""; - var flags = []; - var malformed = false; - var isCharSet = false; - var terminated; + // Functions without properties can be shortcutted. + if (typeof value === 'function' && keys.length === 0) { + if (isRegExp(value)) { + return stylize('' + value, 'regexp'); + } else { + var name = value.name ? ': ' + value.name : ''; + return stylize('[Function' + name + ']', 'special'); + } + } - var scanUnexpectedChars = function () { - // Unexpected control character - if (char < " ") { - malformed = true; - this.trigger("warning", { - code: "W048", - line: this.line, - character: this.char - }); - } + // Dates without properties can be shortcutted + if (isDate(value) && keys.length === 0) { + return stylize(value.toUTCString(), 'date'); + } - // Unexpected escaped character - if (char === "<") { - malformed = true; - this.trigger("warning", { - code: "W049", - line: this.line, - character: this.char, - data: [ char ] - }); - } - }.bind(this); + var base, type, braces; + // Determine the object type + if (isArray(value)) { + type = 'Array'; + braces = ['[', ']']; + } else { + type = 'Object'; + braces = ['{', '}']; + } - // Regular expressions must start with '/' - if (!this.prereg || char !== "/") { - return null; - } + // Make functions say that they are functions + if (typeof value === 'function') { + var n = value.name ? ': ' + value.name : ''; + base = (isRegExp(value)) ? ' ' + value : ' [Function' + n + ']'; + } else { + base = ''; + } - index += 1; - terminated = false; + // Make dates with properties first say the date + if (isDate(value)) { + base = ' ' + value.toUTCString(); + } - // Try to get everything in between slashes. A couple of - // cases aside (see scanUnexpectedChars) we don't really - // care whether the resulting expression is valid or not. - // We will check that later using the RegExp object. + if (keys.length === 0) { + return braces[0] + base + braces[1]; + } - while (index < length) { - char = this.peek(index); - value += char; - body += char; + if (recurseTimes < 0) { + if (isRegExp(value)) { + return stylize('' + value, 'regexp'); + } else { + return stylize('[Object]', 'special'); + } + } - if (isCharSet) { - if (char === "]") { - if (this.peek(index - 1) !== "\\" || this.peek(index - 2) === "\\") { - isCharSet = false; - } - } + seen.push(value); + + var output = keys.map(function(key) { + var name, str; + if (value.__lookupGetter__) { + if (value.__lookupGetter__(key)) { + if (value.__lookupSetter__(key)) { + str = stylize('[Getter/Setter]', 'special'); + } else { + str = stylize('[Getter]', 'special'); + } + } else { + if (value.__lookupSetter__(key)) { + str = stylize('[Setter]', 'special'); + } + } + } + if (visible_keys.indexOf(key) < 0) { + name = '[' + key + ']'; + } + if (!str) { + if (seen.indexOf(value[key]) < 0) { + if (recurseTimes === null) { + str = format(value[key]); + } else { + str = format(value[key], recurseTimes - 1); + } + if (str.indexOf('\n') > -1) { + if (isArray(value)) { + str = str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n').substr(2); + } else { + str = '\n' + str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n'); + } + } + } else { + str = stylize('[Circular]', 'special'); + } + } + if (typeof name === 'undefined') { + if (type === 'Array' && key.match(/^\d+$/)) { + return str; + } + name = JSON.stringify('' + key); + if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { + name = name.substr(1, name.length - 2); + name = stylize(name, 'name'); + } else { + name = name.replace(/'/g, "\\'") + .replace(/\\"/g, '"') + .replace(/(^"|"$)/g, "'"); + name = stylize(name, 'string'); + } + } - if (char === "\\") { - index += 1; - char = this.peek(index); - body += char; - value += char; + return name + ': ' + str; + }); - scanUnexpectedChars(); - } + seen.pop(); - index += 1; - continue; - } + var numLinesEst = 0; + var length = output.reduce(function(prev, cur) { + numLinesEst++; + if (cur.indexOf('\n') >= 0) numLinesEst++; + return prev + cur.length + 1; + }, 0); - if (char === "\\") { - index += 1; - char = this.peek(index); - body += char; - value += char; + if (length > 50) { + output = braces[0] + + (base === '' ? '' : base + '\n ') + + ' ' + + output.join(',\n ') + + ' ' + + braces[1]; - scanUnexpectedChars(); + } else { + output = braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; + } - if (char === "/") { - index += 1; - continue; - } + return output; + } + return format(obj, (typeof depth === 'undefined' ? 2 : depth)); +}; - if (char === "[") { - index += 1; - continue; - } - } - if (char === "[") { - isCharSet = true; - index += 1; - continue; - } +function isArray(ar) { + return ar instanceof Array || + Array.isArray(ar) || + (ar && ar !== Object.prototype && isArray(ar.__proto__)); +} - if (char === "/") { - body = body.substr(0, body.length - 1); - terminated = true; - index += 1; - break; - } - index += 1; - } +function isRegExp(re) { + return re instanceof RegExp || + (typeof re === 'object' && Object.prototype.toString.call(re) === '[object RegExp]'); +} - // A regular expression that was never closed is an - // error from which we cannot recover. - if (!terminated) { - this.trigger("error", { - code: "E015", - line: this.line, - character: this.from - }); +function isDate(d) { + if (d instanceof Date) return true; + if (typeof d !== 'object') return false; + var properties = Date.prototype && Object_getOwnPropertyNames(Date.prototype); + var proto = d.__proto__ && Object_getOwnPropertyNames(d.__proto__); + return JSON.stringify(proto) === JSON.stringify(properties); +} - return void this.trigger("fatal", { - line: this.line, - from: this.from - }); - } +function pad(n) { + return n < 10 ? '0' + n.toString(10) : n.toString(10); +} - // Parse flags (if any). +var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', + 'Oct', 'Nov', 'Dec']; - while (index < length) { - char = this.peek(index); - if (!/[gim]/.test(char)) { - break; - } - flags.push(char); - value += char; - index += 1; - } +// 26 Feb 16:19:34 +function timestamp() { + var d = new Date(); + var time = [pad(d.getHours()), + pad(d.getMinutes()), + pad(d.getSeconds())].join(':'); + return [d.getDate(), months[d.getMonth()], time].join(' '); +} - // Check regular expression for correctness. +exports.log = function (msg) {}; - try { - new RegExp(body, flags.join("")); - } catch (err) { - malformed = true; - this.trigger("error", { - code: "E016", - line: this.line, - character: this.char, - data: [ err.message ] // Platform dependent! - }); - } +exports.pump = null; - return { - type: Token.RegExp, - value: value, - flags: flags, - isMalformed: malformed - }; - }, +var Object_keys = Object.keys || function (obj) { + var res = []; + for (var key in obj) res.push(key); + return res; +}; - /* - * Scan for any occurence of mixed tabs and spaces. If smarttabs option - * is on, ignore tabs followed by spaces. - * - * Tabs followed by one space followed by a block comment are allowed. - */ - scanMixedSpacesAndTabs: function () { - var at, match; +var Object_getOwnPropertyNames = Object.getOwnPropertyNames || function (obj) { + var res = []; + for (var key in obj) { + if (Object.hasOwnProperty.call(obj, key)) res.push(key); + } + return res; +}; - if (state.option.smarttabs) { - // Negative look-behind for "//" - match = this.input.match(/(\/\/|^\s?\*)? \t/); - at = match && !match[1] ? 0 : -1; - } else { - at = this.input.search(/ \t|\t [^\*]/); - } +var Object_create = Object.create || function (prototype, properties) { + // from es5-shim + var object; + if (prototype === null) { + object = { '__proto__' : null }; + } + else { + if (typeof prototype !== 'object') { + throw new TypeError( + 'typeof prototype[' + (typeof prototype) + '] != \'object\'' + ); + } + var Type = function () {}; + Type.prototype = prototype; + object = new Type(); + object.__proto__ = prototype; + } + if (typeof properties !== 'undefined' && Object.defineProperties) { + Object.defineProperties(object, properties); + } + return object; +}; - return at; - }, +exports.inherits = function(ctor, superCtor) { + ctor.super_ = superCtor; + ctor.prototype = Object_create(superCtor.prototype, { + constructor: { + value: ctor, + enumerable: false, + writable: true, + configurable: true + } + }); +}; - /* - * Scan for characters that get silently deleted by one or more browsers. - */ - scanUnsafeChars: function () { - return this.input.search(reg.unsafeChars); - }, +var formatRegExp = /%[sdj%]/g; +exports.format = function(f) { + if (typeof f !== 'string') { + var objects = []; + for (var i = 0; i < arguments.length; i++) { + objects.push(exports.inspect(arguments[i])); + } + return objects.join(' '); + } - /* - * Produce the next raw token or return 'null' if no tokens can be matched. - * This method skips over all space characters. - */ - next: function (checks) { - this.from = this.char; + var i = 1; + var args = arguments; + var len = args.length; + var str = String(f).replace(formatRegExp, function(x) { + if (x === '%%') return '%'; + if (i >= len) return x; + switch (x) { + case '%s': return String(args[i++]); + case '%d': return Number(args[i++]); + case '%j': return JSON.stringify(args[i++]); + default: + return x; + } + }); + for(var x = args[i]; i < len; x = args[++i]){ + if (x === null || typeof x !== 'object') { + str += ' ' + x; + } else { + str += ' ' + exports.inspect(x); + } + } + return str; +}; - // Move to the next non-space character. - var start; - if (/\s/.test(this.peek())) { - start = this.char; +},{"events":2}],12:[function(require,module,exports){ +(function(){// UTILITY +var util = require('util'); +var Buffer = require("buffer").Buffer; +var pSlice = Array.prototype.slice; - while (/\s/.test(this.peek())) { - this.from += 1; - this.skip(); - } +function objectKeys(object) { + if (Object.keys) return Object.keys(object); + var result = []; + for (var name in object) { + if (Object.prototype.hasOwnProperty.call(object, name)) { + result.push(name); + } + } + return result; +} - if (this.peek() === "") { // EOL - if (!/^\s*$/.test(this.lines[this.line - 1]) && state.option.trailing) { - this.trigger("warning", { code: "W102", line: this.line, character: start }); - } - } - } +// 1. The assert module provides functions that throw +// AssertionError's when particular conditions are not met. The +// assert module must conform to the following interface. - // Methods that work with multi-line structures and move the - // character pointer. +var assert = module.exports = ok; - var match = this.scanComments() || - this.scanStringLiteral(checks); +// 2. The AssertionError is defined in assert. +// new assert.AssertionError({ message: message, +// actual: actual, +// expected: expected }) - if (match) { - return match; - } +assert.AssertionError = function AssertionError(options) { + this.name = 'AssertionError'; + this.message = options.message; + this.actual = options.actual; + this.expected = options.expected; + this.operator = options.operator; + var stackStartFunction = options.stackStartFunction || fail; - // Methods that don't move the character pointer. + if (Error.captureStackTrace) { + Error.captureStackTrace(this, stackStartFunction); + } +}; +util.inherits(assert.AssertionError, Error); - match = - this.scanRegExp() || - this.scanPunctuator() || - this.scanKeyword() || - this.scanIdentifier() || - this.scanNumericLiteral(); +function replacer(key, value) { + if (value === undefined) { + return '' + value; + } + if (typeof value === 'number' && (isNaN(value) || !isFinite(value))) { + return value.toString(); + } + if (typeof value === 'function' || value instanceof RegExp) { + return value.toString(); + } + return value; +} - if (match) { - this.skip(match.value.length); - return match; - } +function truncate(s, n) { + if (typeof s == 'string') { + return s.length < n ? s : s.slice(0, n); + } else { + return s; + } +} - // No token could be matched, give up. +assert.AssertionError.prototype.toString = function() { + if (this.message) { + return [this.name + ':', this.message].join(' '); + } else { + return [ + this.name + ':', + truncate(JSON.stringify(this.actual, replacer), 128), + this.operator, + truncate(JSON.stringify(this.expected, replacer), 128) + ].join(' '); + } +}; - return null; - }, +// assert.AssertionError instanceof Error - /* - * Switch to the next line and reset all char pointers. Once - * switched, this method also checks for mixed spaces and tabs - * and other minor warnings. - */ - nextLine: function () { - var char; +assert.AssertionError.__proto__ = Error.prototype; - if (this.line >= this.lines.length) { - return false; - } +// At present only the three keys mentioned above are used and +// understood by the spec. Implementations or sub modules can pass +// other keys to the AssertionError's constructor - they will be +// ignored. - this.input = this.lines[this.line]; - this.line += 1; - this.char = 1; - this.from = 1; +// 3. All of the following functions must throw an AssertionError +// when a corresponding condition is not met, with a message that +// may be undefined if not provided. All assertion methods provide +// both the actual and expected values to the assertion error for +// display purposes. - char = this.scanMixedSpacesAndTabs(); - if (char >= 0) { - this.trigger("warning", { code: "W099", line: this.line, character: char + 1 }); - } +function fail(actual, expected, message, operator, stackStartFunction) { + throw new assert.AssertionError({ + message: message, + actual: actual, + expected: expected, + operator: operator, + stackStartFunction: stackStartFunction + }); +} - this.input = this.input.replace(/\t/g, state.tab); - char = this.scanUnsafeChars(); +// EXTENSION! allows for well behaved errors defined elsewhere. +assert.fail = fail; - if (char >= 0) { - this.trigger("warning", { code: "W100", line: this.line, character: char }); - } +// 4. Pure assertion tests whether a value is truthy, as determined +// by !!guard. +// assert.ok(guard, message_opt); +// This statement is equivalent to assert.equal(true, guard, +// message_opt);. To test strictly for the value true, use +// assert.strictEqual(true, guard, message_opt);. - // If there is a limit on line length, warn when lines get too - // long. +function ok(value, message) { + if (!!!value) fail(value, true, message, '==', assert.ok); +} +assert.ok = ok; - if (state.option.maxlen && state.option.maxlen < this.input.length) { - this.trigger("warning", { code: "W101", line: this.line, character: this.input.length }); - } +// 5. The equality assertion tests shallow, coercive equality with +// ==. +// assert.equal(actual, expected, message_opt); - return true; - }, +assert.equal = function equal(actual, expected, message) { + if (actual != expected) fail(actual, expected, message, '==', assert.equal); +}; - /* - * This is simply a synonym for nextLine() method with a friendlier - * public name. - */ - start: function () { - this.nextLine(); - }, +// 6. The non-equality assertion tests for whether two objects are not equal +// with != assert.notEqual(actual, expected, message_opt); - /* - * Produce the next token. This function is called by advance() to get - * the next token. It retuns a token in a JSLint-compatible format. - */ - token: function () { - /*jshint loopfunc:true */ - var checks = asyncTrigger(); - var token; +assert.notEqual = function notEqual(actual, expected, message) { + if (actual == expected) { + fail(actual, expected, message, '!=', assert.notEqual); + } +}; - // Produce a token object. - var create = function (type, value, isProperty) { - /*jshint validthis:true */ - var obj; +// 7. The equivalence assertion tests a deep equality relation. +// assert.deepEqual(actual, expected, message_opt); - if (type !== "(endline)" && type !== "(end)") { - this.prereg = false; - } +assert.deepEqual = function deepEqual(actual, expected, message) { + if (!_deepEqual(actual, expected)) { + fail(actual, expected, message, 'deepEqual', assert.deepEqual); + } +}; - if (type === "(punctuator)") { - switch (value) { - case ".": - case ")": - case "~": - case "#": - case "]": - this.prereg = false; - break; - default: - this.prereg = true; - } +function _deepEqual(actual, expected) { + // 7.1. All identical values are equivalent, as determined by ===. + if (actual === expected) { + return true; - obj = Object.create(state.syntax[value] || state.syntax["(error)"]); - } + } else if (Buffer.isBuffer(actual) && Buffer.isBuffer(expected)) { + if (actual.length != expected.length) return false; + + for (var i = 0; i < actual.length; i++) { + if (actual[i] !== expected[i]) return false; + } - if (type === "(identifier)") { - if (value === "return" || value === "case" || value === "typeof") { - this.prereg = true; - } + return true; - if (_.has(state.syntax, value)) { - obj = Object.create(state.syntax[value] || state.syntax["(error)"]); - } - } + // 7.2. If the expected value is a Date object, the actual value is + // equivalent if it is also a Date object that refers to the same time. + } else if (actual instanceof Date && expected instanceof Date) { + return actual.getTime() === expected.getTime(); - if (!obj) { - obj = Object.create(state.syntax[type]); - } + // 7.3. Other pairs that do not both pass typeof value == 'object', + // equivalence is determined by ==. + } else if (typeof actual != 'object' && typeof expected != 'object') { + return actual == expected; - obj.identifier = (type === "(identifier)"); - obj.type = obj.type || type; - obj.value = value; - obj.line = this.line; - obj.character = this.char; - obj.from = this.from; + // 7.4. For all other Object pairs, including Array objects, equivalence is + // determined by having the same number of owned properties (as verified + // with Object.prototype.hasOwnProperty.call), the same set of keys + // (although not necessarily the same order), equivalent values for every + // corresponding key, and an identical 'prototype' property. Note: this + // accounts for both named and indexed properties on Arrays. + } else { + return objEquiv(actual, expected); + } +} - if (isProperty && obj.identifier) { - obj.isProperty = isProperty; - } +function isUndefinedOrNull(value) { + return value === null || value === undefined; +} - obj.check = checks.check; +function isArguments(object) { + return Object.prototype.toString.call(object) == '[object Arguments]'; +} - return obj; - }.bind(this); +function objEquiv(a, b) { + if (isUndefinedOrNull(a) || isUndefinedOrNull(b)) + return false; + // an identical 'prototype' property. + if (a.prototype !== b.prototype) return false; + //~~~I've managed to break Object.keys through screwy arguments passing. + // Converting to array solves the problem. + if (isArguments(a)) { + if (!isArguments(b)) { + return false; + } + a = pSlice.call(a); + b = pSlice.call(b); + return _deepEqual(a, b); + } + try { + var ka = objectKeys(a), + kb = objectKeys(b), + key, i; + } catch (e) {//happens when one is a string literal and the other isn't + return false; + } + // having the same number of owned properties (keys incorporates + // hasOwnProperty) + if (ka.length != kb.length) + return false; + //the same set of keys (although not necessarily the same order), + ka.sort(); + kb.sort(); + //~~~cheap key test + for (i = ka.length - 1; i >= 0; i--) { + if (ka[i] != kb[i]) + return false; + } + //equivalent values for every corresponding key, and + //~~~possibly expensive deep test + for (i = ka.length - 1; i >= 0; i--) { + key = ka[i]; + if (!_deepEqual(a[key], b[key])) return false; + } + return true; +} - for (;;) { - if (!this.input.length) { - return create(this.nextLine() ? "(endline)" : "(end)", ""); - } +// 8. The non-equivalence assertion tests for any deep inequality. +// assert.notDeepEqual(actual, expected, message_opt); - token = this.next(checks); +assert.notDeepEqual = function notDeepEqual(actual, expected, message) { + if (_deepEqual(actual, expected)) { + fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual); + } +}; - if (!token) { - if (this.input.length) { - // Unexpected character. - this.trigger("error", { - code: "E024", - line: this.line, - character: this.char, - data: [ this.peek() ] - }); +// 9. The strict equality assertion tests strict equality, as determined by ===. +// assert.strictEqual(actual, expected, message_opt); - this.input = ""; - } +assert.strictEqual = function strictEqual(actual, expected, message) { + if (actual !== expected) { + fail(actual, expected, message, '===', assert.strictEqual); + } +}; - continue; - } +// 10. The strict non-equality assertion tests for strict inequality, as +// determined by !==. assert.notStrictEqual(actual, expected, message_opt); - switch (token.type) { - case Token.StringLiteral: - this.triggerAsync("String", { - line: this.line, - char: this.char, - from: this.from, - value: token.value, - quote: token.quote - }, checks, function () { return true; }); +assert.notStrictEqual = function notStrictEqual(actual, expected, message) { + if (actual === expected) { + fail(actual, expected, message, '!==', assert.notStrictEqual); + } +}; - return create("(string)", token.value); - case Token.Identifier: - this.trigger("Identifier", { - line: this.line, - char: this.char, - from: this.form, - name: token.value, - isProperty: state.tokens.curr.id === "." - }); +function expectedException(actual, expected) { + if (!actual || !expected) { + return false; + } - /* falls through */ - case Token.Keyword: - case Token.NullLiteral: - case Token.BooleanLiteral: - return create("(identifier)", token.value, state.tokens.curr.id === "."); + if (expected instanceof RegExp) { + return expected.test(actual); + } else if (actual instanceof expected) { + return true; + } else if (expected.call({}, actual) === true) { + return true; + } - case Token.NumericLiteral: - if (token.isMalformed) { - this.trigger("warning", { - code: "W045", - line: this.line, - character: this.char, - data: [ token.value ] - }); - } + return false; +} - this.triggerAsync("warning", { - code: "W114", - line: this.line, - character: this.char, - data: [ "0x-" ] - }, checks, function () { return token.base === 16 && state.jsonMode; }); +function _throws(shouldThrow, block, expected, message) { + var actual; - this.triggerAsync("warning", { - code: "W115", - line: this.line, - character: this.char - }, checks, function () { - return state.directive["use strict"] && token.base === 8; - }); + if (typeof expected === 'string') { + message = expected; + expected = null; + } - this.trigger("Number", { - line: this.line, - char: this.char, - from: this.from, - value: token.value, - base: token.base, - isMalformed: token.malformed - }); + try { + block(); + } catch (e) { + actual = e; + } - return create("(number)", token.value); + message = (expected && expected.name ? ' (' + expected.name + ').' : '.') + + (message ? ' ' + message : '.'); - case Token.RegExp: - return create("(regexp)", token.value); + if (shouldThrow && !actual) { + fail('Missing expected exception' + message); + } - case Token.Comment: - state.tokens.curr.comment = true; + if (!shouldThrow && expectedException(actual, expected)) { + fail('Got unwanted exception' + message); + } - if (token.isSpecial) { - return { - value: token.value, - body: token.body, - type: token.commentType, - isSpecial: token.isSpecial, - line: this.line, - character: this.char, - from: this.from - }; - } + if ((shouldThrow && actual && expected && + !expectedException(actual, expected)) || (!shouldThrow && actual)) { + throw actual; + } +} - break; +// 11. Expected to throw an error: +// assert.throws(block, Error_opt, message_opt); - case "": - break; +assert.throws = function(block, /*optional*/error, /*optional*/message) { + _throws.apply(this, [true].concat(pSlice.call(arguments))); +}; - default: - return create("(punctuator)", token.value); - } - } - } +// EXTENSION! This is annoying to write outside this module. +assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) { + _throws.apply(this, [false].concat(pSlice.call(arguments))); }; -exports.Lexer = Lexer; +assert.ifError = function(err) { if (err) {throw err;}}; })() -},{"events":2,"./state.js":6,"./reg.js":4,"underscore":9}],14:[function(require,module,exports){ +},{"util":11,"buffer":13}],14:[function(require,module,exports){ exports.readIEEE754 = function(buffer, offset, isBE, mLen, nBytes) { var e, m, eLen = nBytes * 8 - mLen - 1, @@ -11042,7 +11330,7 @@ SlowBuffer.prototype.writeDoubleBE = Buffer.prototype.writeDoubleBE; module.exports.fromByteArray = uint8ToBase64; }()); -},{}]},{},["E/GbHF"]) +},{}]},{},["PeVhMp"]) ; JSHINT = require('jshint').JSHINT; }()); \ No newline at end of file diff --git a/tests/com.eclipsesource.jshint.test/src/com/eclipsesource/jshint/JSHint_Compatibility_Test.java b/tests/com.eclipsesource.jshint.test/src/com/eclipsesource/jshint/JSHint_Compatibility_Test.java index 0026013..a1ef8b7 100644 --- a/tests/com.eclipsesource.jshint.test/src/com/eclipsesource/jshint/JSHint_Compatibility_Test.java +++ b/tests/com.eclipsesource.jshint.test/src/com/eclipsesource/jshint/JSHint_Compatibility_Test.java @@ -23,38 +23,39 @@ import com.eclipsesource.json.JsonObject; -import static org.junit.Assert.assertEquals; -import static org.junit.Assert.assertTrue; +import static org.hamcrest.CoreMatchers.startsWith; +import static org.junit.Assert.*; @RunWith( value = Parameterized.class ) public class JSHint_Compatibility_Test { + private final String version; private ArrayList problems; private TestHandler handler; - private final String jsHintResource; private JSHint jsHint; @Parameters public static Collection getParameters() { ArrayList parameters = new ArrayList(); - parameters.add( new Object[] { "com/jshint/jshint-r03.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-r04.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-r05.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-r06.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-r07.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-r08.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-r09.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-r10.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-r11.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-r12.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-1.1.0.js" } ); - parameters.add( new Object[] { "com/jshint/jshint-2.1.2.js" } ); + parameters.add( new Object[] { "r03" } ); + parameters.add( new Object[] { "r04" } ); + parameters.add( new Object[] { "r05" } ); + parameters.add( new Object[] { "r06" } ); + parameters.add( new Object[] { "r07" } ); + parameters.add( new Object[] { "r08" } ); + parameters.add( new Object[] { "r09" } ); + parameters.add( new Object[] { "r10" } ); + parameters.add( new Object[] { "r11" } ); + parameters.add( new Object[] { "r12" } ); + parameters.add( new Object[] { "1.1.0" } ); + parameters.add( new Object[] { "2.1.2" } ); + parameters.add( new Object[] { "2.1.10" } ); return parameters; } - public JSHint_Compatibility_Test( String jsHintResource ) { - this.jsHintResource = jsHintResource; + public JSHint_Compatibility_Test( String version ) { + this.version = version; } @Before @@ -154,6 +155,19 @@ public void eqnull_withEqnullInConfig() { assertEquals( "", getAllProblems() ); } + @Test + public void extraComma() { + JsonObject config = new JsonObject(); + if( versionGreaterThan( "2.0.0" ) ) { + config.add( "es3", true ); + } + jsHint.configure( config ); + + jsHint.check( "var o = { x: 1, y: 2, z: 3, };", handler ); + + assertThat( getAllProblems(), startsWith( "1.26:Extra comma" ) ); + } + @Test public void positionIsCorrect() { jsHint.check( "var x = 23 == null;", handler ); @@ -195,7 +209,11 @@ public void toleratesWindowsLineBreaks() { private void loadJsHint() throws IOException { ClassLoader classLoader = getClass().getClassLoader(); - InputStream stream = classLoader.getResourceAsStream( jsHintResource ); + String resource = "com/jshint/jshint-" + version + ".js"; + InputStream stream = classLoader.getResourceAsStream( resource ); + if( stream == null ) { + throw new IllegalArgumentException( "JSHint resource not found: " + resource ); + } try { jsHint.load( stream ); } finally { @@ -208,6 +226,49 @@ private String getPositionFromProblem( int n ) { return problem.getLine() + "." + problem.getCharacter(); } + @Test + public void testVersions() { + assertEquals( 0, compareVersion( "1.2.3", "1.2.3" ) ); + assertEquals( 0, compareVersion( "r10", "r10" ) ); + assertEquals( -1, compareVersion( "r9", "r10" ) ); + assertEquals( -1, compareVersion( "r10", "1.0.0" ) ); + assertEquals( -1, compareVersion( "2.0.0", "3.0.0" ) ); + assertEquals( -1, compareVersion( "2.0.0", "2.1.0" ) ); + assertEquals( -1, compareVersion( "2.0.0", "2.0.1" ) ); + assertEquals( 1, compareVersion( "r10", "r9" ) ); + assertEquals( 1, compareVersion( "1.0.0", "r10" ) ); + assertEquals( 1, compareVersion( "2.0.0", "1.0.0" ) ); + assertEquals( 1, compareVersion( "2.1.0", "2.0.0" ) ); + assertEquals( 1, compareVersion( "2.0.1", "2.0.0" ) ); + } + + private boolean versionGreaterThan( String version ) { + return compareVersion( this.version, version ) > 0; + } + + private static int compareVersion( String version1, String version2 ) { + int[] parts1 = transformVersion( version1 ); + int[] parts2 = transformVersion( version2 ); + for( int i = 0; i < 3; i++ ) { + if( parts1[i] < parts2[i] ) { + return -1; + } + if( parts1[i] > parts2[i] ) { + return 1; + } + } + return 0; + } + + private static int[] transformVersion( String version ) { + String[] parts = version.replaceAll( "r", "0.0." ).split( "\\." ); + int[] result = new int[3]; + for( int i = 0; i < 3; i++ ) { + result[i] = Integer.parseInt( parts[i] ); + } + return result; + } + private String getAllProblems() { StringBuilder builder = new StringBuilder(); for( Problem problem : problems ) { diff --git a/tests/com.eclipsesource.jshint.test/src/com/jshint/jshint-2.1.10.js b/tests/com.eclipsesource.jshint.test/src/com/jshint/jshint-2.1.10.js new file mode 100644 index 0000000..c84716c --- /dev/null +++ b/tests/com.eclipsesource.jshint.test/src/com/jshint/jshint-2.1.10.js @@ -0,0 +1,11336 @@ +// 2.1.10 +var JSHINT; +(function () { +var require; +require=(function(e,t,n){function i(n,s){if(!t[n]){if(!e[n]){var o=typeof require=="function"&&require;if(!s&&o)return o(n,!0);if(r)return r(n,!0);throw new Error("Cannot find module '"+n+"'")}var u=t[n]={exports:{}};e[n][0].call(u.exports,function(t){var r=e[n][1][t];return i(r?r:t)},u,u.exports)}return t[n].exports}var r=typeof require=="function"&&require;for(var s=0;s 0) { + var fn = queue.shift(); + fn(); + } + } + }, true); + + return function nextTick(fn) { + queue.push(fn); + window.postMessage('process-tick', '*'); + }; + } + + return function nextTick(fn) { + setTimeout(fn, 0); + }; +})(); + +process.title = 'browser'; +process.browser = true; +process.env = {}; +process.argv = []; + +process.binding = function (name) { + throw new Error('process.binding is not supported'); +} + +// TODO(shtylman) +process.cwd = function () { return '/' }; +process.chdir = function (dir) { + throw new Error('process.chdir is not supported'); +}; + +},{}],2:[function(require,module,exports){ +(function(process){if (!process.EventEmitter) process.EventEmitter = function () {}; + +var EventEmitter = exports.EventEmitter = process.EventEmitter; +var isArray = typeof Array.isArray === 'function' + ? Array.isArray + : function (xs) { + return Object.prototype.toString.call(xs) === '[object Array]' + } +; +function indexOf (xs, x) { + if (xs.indexOf) return xs.indexOf(x); + for (var i = 0; i < xs.length; i++) { + if (x === xs[i]) return i; + } + return -1; +} + +// By default EventEmitters will print a warning if more than +// 10 listeners are added to it. This is a useful default which +// helps finding memory leaks. +// +// Obviously not all Emitters should be limited to 10. This function allows +// that to be increased. Set to zero for unlimited. +var defaultMaxListeners = 10; +EventEmitter.prototype.setMaxListeners = function(n) { + if (!this._events) this._events = {}; + this._events.maxListeners = n; +}; + + +EventEmitter.prototype.emit = function(type) { + // If there is no 'error' event listener then throw. + if (type === 'error') { + if (!this._events || !this._events.error || + (isArray(this._events.error) && !this._events.error.length)) + { + if (arguments[1] instanceof Error) { + throw arguments[1]; // Unhandled 'error' event + } else { + throw new Error("Uncaught, unspecified 'error' event."); + } + return false; + } + } + + if (!this._events) return false; + var handler = this._events[type]; + if (!handler) return false; + + if (typeof handler == 'function') { + switch (arguments.length) { + // fast cases + case 1: + handler.call(this); + break; + case 2: + handler.call(this, arguments[1]); + break; + case 3: + handler.call(this, arguments[1], arguments[2]); + break; + // slower + default: + var args = Array.prototype.slice.call(arguments, 1); + handler.apply(this, args); + } + return true; + + } else if (isArray(handler)) { + var args = Array.prototype.slice.call(arguments, 1); + + var listeners = handler.slice(); + for (var i = 0, l = listeners.length; i < l; i++) { + listeners[i].apply(this, args); + } + return true; + + } else { + return false; + } +}; + +// EventEmitter is defined in src/node_events.cc +// EventEmitter.prototype.emit() is also defined there. +EventEmitter.prototype.addListener = function(type, listener) { + if ('function' !== typeof listener) { + throw new Error('addListener only takes instances of Function'); + } + + if (!this._events) this._events = {}; + + // To avoid recursion in the case that type == "newListeners"! Before + // adding it to the listeners, first emit "newListeners". + this.emit('newListener', type, listener); + + if (!this._events[type]) { + // Optimize the case of one listener. Don't need the extra array object. + this._events[type] = listener; + } else if (isArray(this._events[type])) { + + // Check for listener leak + if (!this._events[type].warned) { + var m; + if (this._events.maxListeners !== undefined) { + m = this._events.maxListeners; + } else { + m = defaultMaxListeners; + } + + if (m && m > 0 && this._events[type].length > m) { + this._events[type].warned = true; + console.error('(node) warning: possible EventEmitter memory ' + + 'leak detected. %d listeners added. ' + + 'Use emitter.setMaxListeners() to increase limit.', + this._events[type].length); + console.trace(); + } + } + + // If we've already got an array, just append. + this._events[type].push(listener); + } else { + // Adding the second element, need to change to array. + this._events[type] = [this._events[type], listener]; + } + + return this; +}; + +EventEmitter.prototype.on = EventEmitter.prototype.addListener; + +EventEmitter.prototype.once = function(type, listener) { + var self = this; + self.on(type, function g() { + self.removeListener(type, g); + listener.apply(this, arguments); + }); + + return this; +}; + +EventEmitter.prototype.removeListener = function(type, listener) { + if ('function' !== typeof listener) { + throw new Error('removeListener only takes instances of Function'); + } + + // does not use listeners(), so no side effect of creating _events[type] + if (!this._events || !this._events[type]) return this; + + var list = this._events[type]; + + if (isArray(list)) { + var i = indexOf(list, listener); + if (i < 0) return this; + list.splice(i, 1); + if (list.length == 0) + delete this._events[type]; + } else if (this._events[type] === listener) { + delete this._events[type]; + } + + return this; +}; + +EventEmitter.prototype.removeAllListeners = function(type) { + if (arguments.length === 0) { + this._events = {}; + return this; + } + + // does not use listeners(), so no side effect of creating _events[type] + if (type && this._events && this._events[type]) this._events[type] = null; + return this; +}; + +EventEmitter.prototype.listeners = function(type) { + if (!this._events) this._events = {}; + if (!this._events[type]) this._events[type] = []; + if (!isArray(this._events[type])) { + this._events[type] = [this._events[type]]; + } + return this._events[type]; +}; + +})(require("__browserify_process")) +},{"__browserify_process":1}],3:[function(require,module,exports){ +(function(){// jshint -W001 + +"use strict"; + +// Identifiers provided by the ECMAScript standard. + +exports.reservedVars = { + arguments : false, + NaN : false +}; + +exports.ecmaIdentifiers = { + Array : false, + Boolean : false, + Date : false, + decodeURI : false, + decodeURIComponent : false, + encodeURI : false, + encodeURIComponent : false, + Error : false, + "eval" : false, + EvalError : false, + Function : false, + hasOwnProperty : false, + isFinite : false, + isNaN : false, + JSON : false, + Math : false, + Map : false, + Number : false, + Object : false, + parseInt : false, + parseFloat : false, + RangeError : false, + ReferenceError : false, + RegExp : false, + Set : false, + String : false, + SyntaxError : false, + TypeError : false, + URIError : false, + WeakMap : false +}; + +// Global variables commonly provided by a web browser environment. + +exports.browser = { + Audio : false, + Blob : false, + addEventListener : false, + applicationCache : false, + atob : false, + blur : false, + btoa : false, + clearInterval : false, + clearTimeout : false, + close : false, + closed : false, + CustomEvent : false, + DOMParser : false, + defaultStatus : false, + document : false, + Element : false, + ElementTimeControl : false, + event : false, + FileReader : false, + FormData : false, + focus : false, + frames : false, + getComputedStyle : false, + HTMLElement : false, + HTMLAnchorElement : false, + HTMLBaseElement : false, + HTMLBlockquoteElement: false, + HTMLBodyElement : false, + HTMLBRElement : false, + HTMLButtonElement : false, + HTMLCanvasElement : false, + HTMLDirectoryElement : false, + HTMLDivElement : false, + HTMLDListElement : false, + HTMLFieldSetElement : false, + HTMLFontElement : false, + HTMLFormElement : false, + HTMLFrameElement : false, + HTMLFrameSetElement : false, + HTMLHeadElement : false, + HTMLHeadingElement : false, + HTMLHRElement : false, + HTMLHtmlElement : false, + HTMLIFrameElement : false, + HTMLImageElement : false, + HTMLInputElement : false, + HTMLIsIndexElement : false, + HTMLLabelElement : false, + HTMLLayerElement : false, + HTMLLegendElement : false, + HTMLLIElement : false, + HTMLLinkElement : false, + HTMLMapElement : false, + HTMLMenuElement : false, + HTMLMetaElement : false, + HTMLModElement : false, + HTMLObjectElement : false, + HTMLOListElement : false, + HTMLOptGroupElement : false, + HTMLOptionElement : false, + HTMLParagraphElement : false, + HTMLParamElement : false, + HTMLPreElement : false, + HTMLQuoteElement : false, + HTMLScriptElement : false, + HTMLSelectElement : false, + HTMLStyleElement : false, + HTMLTableCaptionElement: false, + HTMLTableCellElement : false, + HTMLTableColElement : false, + HTMLTableElement : false, + HTMLTableRowElement : false, + HTMLTableSectionElement: false, + HTMLTextAreaElement : false, + HTMLTitleElement : false, + HTMLUListElement : false, + HTMLVideoElement : false, + history : false, + Image : false, + length : false, + localStorage : false, + location : false, + MessageChannel : false, + MessageEvent : false, + MessagePort : false, + MouseEvent : false, + moveBy : false, + moveTo : false, + MutationObserver : false, + name : false, + Node : false, + NodeFilter : false, + navigator : false, + onbeforeunload : true, + onblur : true, + onerror : true, + onfocus : true, + onload : true, + onresize : true, + onunload : true, + open : false, + openDatabase : false, + opener : false, + Option : false, + parent : false, + print : false, + removeEventListener : false, + resizeBy : false, + resizeTo : false, + screen : false, + scroll : false, + scrollBy : false, + scrollTo : false, + sessionStorage : false, + setInterval : false, + setTimeout : false, + SharedWorker : false, + status : false, + SVGAElement : false, + SVGAltGlyphDefElement: false, + SVGAltGlyphElement : false, + SVGAltGlyphItemElement: false, + SVGAngle : false, + SVGAnimateColorElement: false, + SVGAnimateElement : false, + SVGAnimateMotionElement: false, + SVGAnimateTransformElement: false, + SVGAnimatedAngle : false, + SVGAnimatedBoolean : false, + SVGAnimatedEnumeration: false, + SVGAnimatedInteger : false, + SVGAnimatedLength : false, + SVGAnimatedLengthList: false, + SVGAnimatedNumber : false, + SVGAnimatedNumberList: false, + SVGAnimatedPathData : false, + SVGAnimatedPoints : false, + SVGAnimatedPreserveAspectRatio: false, + SVGAnimatedRect : false, + SVGAnimatedString : false, + SVGAnimatedTransformList: false, + SVGAnimationElement : false, + SVGCSSRule : false, + SVGCircleElement : false, + SVGClipPathElement : false, + SVGColor : false, + SVGColorProfileElement: false, + SVGColorProfileRule : false, + SVGComponentTransferFunctionElement: false, + SVGCursorElement : false, + SVGDefsElement : false, + SVGDescElement : false, + SVGDocument : false, + SVGElement : false, + SVGElementInstance : false, + SVGElementInstanceList: false, + SVGEllipseElement : false, + SVGExternalResourcesRequired: false, + SVGFEBlendElement : false, + SVGFEColorMatrixElement: false, + SVGFEComponentTransferElement: false, + SVGFECompositeElement: false, + SVGFEConvolveMatrixElement: false, + SVGFEDiffuseLightingElement: false, + SVGFEDisplacementMapElement: false, + SVGFEDistantLightElement: false, + SVGFEFloodElement : false, + SVGFEFuncAElement : false, + SVGFEFuncBElement : false, + SVGFEFuncGElement : false, + SVGFEFuncRElement : false, + SVGFEGaussianBlurElement: false, + SVGFEImageElement : false, + SVGFEMergeElement : false, + SVGFEMergeNodeElement: false, + SVGFEMorphologyElement: false, + SVGFEOffsetElement : false, + SVGFEPointLightElement: false, + SVGFESpecularLightingElement: false, + SVGFESpotLightElement: false, + SVGFETileElement : false, + SVGFETurbulenceElement: false, + SVGFilterElement : false, + SVGFilterPrimitiveStandardAttributes: false, + SVGFitToViewBox : false, + SVGFontElement : false, + SVGFontFaceElement : false, + SVGFontFaceFormatElement: false, + SVGFontFaceNameElement: false, + SVGFontFaceSrcElement: false, + SVGFontFaceUriElement: false, + SVGForeignObjectElement: false, + SVGGElement : false, + SVGGlyphElement : false, + SVGGlyphRefElement : false, + SVGGradientElement : false, + SVGHKernElement : false, + SVGICCColor : false, + SVGImageElement : false, + SVGLangSpace : false, + SVGLength : false, + SVGLengthList : false, + SVGLineElement : false, + SVGLinearGradientElement: false, + SVGLocatable : false, + SVGMPathElement : false, + SVGMarkerElement : false, + SVGMaskElement : false, + SVGMatrix : false, + SVGMetadataElement : false, + SVGMissingGlyphElement: false, + SVGNumber : false, + SVGNumberList : false, + SVGPaint : false, + SVGPathElement : false, + SVGPathSeg : false, + SVGPathSegArcAbs : false, + SVGPathSegArcRel : false, + SVGPathSegClosePath : false, + SVGPathSegCurvetoCubicAbs: false, + SVGPathSegCurvetoCubicRel: false, + SVGPathSegCurvetoCubicSmoothAbs: false, + SVGPathSegCurvetoCubicSmoothRel: false, + SVGPathSegCurvetoQuadraticAbs: false, + SVGPathSegCurvetoQuadraticRel: false, + SVGPathSegCurvetoQuadraticSmoothAbs: false, + SVGPathSegCurvetoQuadraticSmoothRel: false, + SVGPathSegLinetoAbs : false, + SVGPathSegLinetoHorizontalAbs: false, + SVGPathSegLinetoHorizontalRel: false, + SVGPathSegLinetoRel : false, + SVGPathSegLinetoVerticalAbs: false, + SVGPathSegLinetoVerticalRel: false, + SVGPathSegList : false, + SVGPathSegMovetoAbs : false, + SVGPathSegMovetoRel : false, + SVGPatternElement : false, + SVGPoint : false, + SVGPointList : false, + SVGPolygonElement : false, + SVGPolylineElement : false, + SVGPreserveAspectRatio: false, + SVGRadialGradientElement: false, + SVGRect : false, + SVGRectElement : false, + SVGRenderingIntent : false, + SVGSVGElement : false, + SVGScriptElement : false, + SVGSetElement : false, + SVGStopElement : false, + SVGStringList : false, + SVGStylable : false, + SVGStyleElement : false, + SVGSwitchElement : false, + SVGSymbolElement : false, + SVGTRefElement : false, + SVGTSpanElement : false, + SVGTests : false, + SVGTextContentElement: false, + SVGTextElement : false, + SVGTextPathElement : false, + SVGTextPositioningElement: false, + SVGTitleElement : false, + SVGTransform : false, + SVGTransformList : false, + SVGTransformable : false, + SVGURIReference : false, + SVGUnitTypes : false, + SVGUseElement : false, + SVGVKernElement : false, + SVGViewElement : false, + SVGViewSpec : false, + SVGZoomAndPan : false, + TimeEvent : false, + top : false, + WebSocket : false, + window : false, + Worker : false, + XMLHttpRequest : false, + XMLSerializer : false, + XPathEvaluator : false, + XPathException : false, + XPathExpression : false, + XPathNamespace : false, + XPathNSResolver : false, + XPathResult : false +}; + +exports.devel = { + alert : false, + confirm: false, + console: false, + Debug : false, + opera : false, + prompt : false +}; + +exports.worker = { + importScripts: true, + postMessage : true, + self : true +}; + +// Widely adopted global names that are not part of ECMAScript standard +exports.nonstandard = { + escape : false, + unescape: false +}; + +// Globals provided by popular JavaScript environments. + +exports.couch = { + "require" : false, + respond : false, + getRow : false, + emit : false, + send : false, + start : false, + sum : false, + log : false, + exports : false, + module : false, + provides : false +}; + +exports.node = { + __filename : false, + __dirname : false, + Buffer : false, + console : false, + exports : true, // In Node it is ok to exports = module.exports = foo(); + GLOBAL : false, + global : false, + module : false, + process : false, + require : false, + setTimeout : false, + clearTimeout : false, + setInterval : false, + clearInterval : false, + setImmediate : false, // v0.9.1+ + clearImmediate: false // v0.9.1+ +}; + +exports.phantom = { + phantom : true, + require : true, + WebPage : true, + console : true, // in examples, but undocumented + exports : true // v1.7+ +}; + +exports.rhino = { + defineClass : false, + deserialize : false, + gc : false, + help : false, + importPackage: false, + "java" : false, + load : false, + loadClass : false, + print : false, + quit : false, + readFile : false, + readUrl : false, + runCommand : false, + seal : false, + serialize : false, + spawn : false, + sync : false, + toint32 : false, + version : false +}; + +exports.shelljs = { + target : false, + echo : false, + exit : false, + cd : false, + pwd : false, + ls : false, + find : false, + cp : false, + rm : false, + mv : false, + mkdir : false, + test : false, + cat : false, + sed : false, + grep : false, + which : false, + dirs : false, + pushd : false, + popd : false, + env : false, + exec : false, + chmod : false, + config : false, + error : false, + tempdir : false +}; + +exports.typed = { + ArrayBuffer : false, + ArrayBufferView : false, + DataView : false, + Float32Array : false, + Float64Array : false, + Int16Array : false, + Int32Array : false, + Int8Array : false, + Uint16Array : false, + Uint32Array : false, + Uint8Array : false, + Uint8ClampedArray : false +}; + +exports.wsh = { + ActiveXObject : true, + Enumerator : true, + GetObject : true, + ScriptEngine : true, + ScriptEngineBuildVersion : true, + ScriptEngineMajorVersion : true, + ScriptEngineMinorVersion : true, + VBArray : true, + WSH : true, + WScript : true, + XDomainRequest : true +}; + +// Globals provided by popular JavaScript libraries. + +exports.dojo = { + dojo : false, + dijit : false, + dojox : false, + define : false, + "require": false +}; + +exports.jquery = { + "$" : false, + jQuery : false +}; + +exports.mootools = { + "$" : false, + "$$" : false, + Asset : false, + Browser : false, + Chain : false, + Class : false, + Color : false, + Cookie : false, + Core : false, + Document : false, + DomReady : false, + DOMEvent : false, + DOMReady : false, + Drag : false, + Element : false, + Elements : false, + Event : false, + Events : false, + Fx : false, + Group : false, + Hash : false, + HtmlTable : false, + Iframe : false, + IframeShim : false, + InputValidator: false, + instanceOf : false, + Keyboard : false, + Locale : false, + Mask : false, + MooTools : false, + Native : false, + Options : false, + OverText : false, + Request : false, + Scroller : false, + Slick : false, + Slider : false, + Sortables : false, + Spinner : false, + Swiff : false, + Tips : false, + Type : false, + typeOf : false, + URI : false, + Window : false +}; + +exports.prototypejs = { + "$" : false, + "$$" : false, + "$A" : false, + "$F" : false, + "$H" : false, + "$R" : false, + "$break" : false, + "$continue" : false, + "$w" : false, + Abstract : false, + Ajax : false, + Class : false, + Enumerable : false, + Element : false, + Event : false, + Field : false, + Form : false, + Hash : false, + Insertion : false, + ObjectRange : false, + PeriodicalExecuter: false, + Position : false, + Prototype : false, + Selector : false, + Template : false, + Toggle : false, + Try : false, + Autocompleter : false, + Builder : false, + Control : false, + Draggable : false, + Draggables : false, + Droppables : false, + Effect : false, + Sortable : false, + SortableObserver : false, + Sound : false, + Scriptaculous : false +}; + +exports.yui = { + YUI : false, + Y : false, + YUI_config: false +}; + + +})() +},{}],4:[function(require,module,exports){ +/* + * Regular expressions. Some of these are stupidly long. + */ + +/*jshint maxlen:1000 */ + +"use string"; + +// Unsafe comment or string (ax) +exports.unsafeString = + /@cc|<\/?|script|\]\s*\]|<\s*!|</i; + +// Unsafe characters that are silently deleted by one or more browsers (cx) +exports.unsafeChars = + /[\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/; + +// Characters in strings that need escaping (nx and nxg) +exports.needEsc = + /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/; + +exports.needEscGlobal = + /[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g; + +// Star slash (lx) +exports.starSlash = /\*\//; + +// Identifier (ix) +exports.identifier = /^([a-zA-Z_$][a-zA-Z0-9_$]*)$/; + +// JavaScript URL (jx) +exports.javascriptURL = /^(?:javascript|jscript|ecmascript|vbscript|mocha|livescript)\s*:/i; + +// Catches /* falls through */ comments (ft) +exports.fallsThrough = /^\s*\/\*\s*falls?\sthrough\s*\*\/\s*$/; + +},{}],5:[function(require,module,exports){ +"use strict"; + +var state = { + syntax: {}, + + reset: function () { + this.tokens = { + prev: null, + next: null, + curr: null + }; + + this.option = {}; + this.ignored = {}; + this.directive = {}; + this.jsonMode = false; + this.jsonWarnings = []; + this.lines = []; + this.tab = ""; + this.cache = {}; // Node.JS doesn't have Map. Sniff. + } +}; + +exports.state = state; + +},{}],6:[function(require,module,exports){ +(function(){"use strict"; + +exports.register = function (linter) { + // Check for properties named __proto__. This special property was + // deprecated and then re-introduced for ES6. + + linter.on("Identifier", function style_scanProto(data) { + if (linter.getOption("proto")) { + return; + } + + if (data.name === "__proto__") { + linter.warn("W103", { + line: data.line, + char: data.char, + data: [ data.name ] + }); + } + }); + + // Check for properties named __iterator__. This is a special property + // available only in browsers with JavaScript 1.7 implementation. + + linter.on("Identifier", function style_scanIterator(data) { + if (linter.getOption("iterator")) { + return; + } + + if (data.name === "__iterator__") { + linter.warn("W104", { + line: data.line, + char: data.char, + data: [ data.name ] + }); + } + }); + + // Check for dangling underscores. + + linter.on("Identifier", function style_scanDangling(data) { + if (!linter.getOption("nomen")) { + return; + } + + // Underscore.js + if (data.name === "_") { + return; + } + + // In Node, __dirname and __filename should be ignored. + if (linter.getOption("node")) { + if (/^(__dirname|__filename)$/.test(data.name) && !data.isProperty) { + return; + } + } + + if (/^(_+.*|.*_+)$/.test(data.name)) { + linter.warn("W105", { + line: data.line, + char: data.from, + data: [ "dangling '_'", data.name ] + }); + } + }); + + // Check that all identifiers are using camelCase notation. + // Exceptions: names like MY_VAR and _myVar. + + linter.on("Identifier", function style_scanCamelCase(data) { + if (!linter.getOption("camelcase")) { + return; + } + + if (data.name.replace(/^_+/, "").indexOf("_") > -1 && !data.name.match(/^[A-Z0-9_]*$/)) { + linter.warn("W106", { + line: data.line, + char: data.from, + data: [ data.name ] + }); + } + }); + + // Enforce consistency in style of quoting. + + linter.on("String", function style_scanQuotes(data) { + var quotmark = linter.getOption("quotmark"); + var code; + + if (!quotmark) { + return; + } + + // If quotmark is set to 'single' warn about all double-quotes. + + if (quotmark === "single" && data.quote !== "'") { + code = "W109"; + } + + // If quotmark is set to 'double' warn about all single-quotes. + + if (quotmark === "double" && data.quote !== "\"") { + code = "W108"; + } + + // If quotmark is set to true, remember the first quotation style + // and then warn about all others. + + if (quotmark === true) { + if (!linter.getCache("quotmark")) { + linter.setCache("quotmark", data.quote); + } + + if (linter.getCache("quotmark") !== data.quote) { + code = "W110"; + } + } + + if (code) { + linter.warn(code, { + line: data.line, + char: data.char, + }); + } + }); + + linter.on("Number", function style_scanNumbers(data) { + if (data.value.charAt(0) === ".") { + // Warn about a leading decimal point. + linter.warn("W008", { + line: data.line, + char: data.char, + data: [ data.value ] + }); + } + + if (data.value.substr(data.value.length - 1) === ".") { + // Warn about a trailing decimal point. + linter.warn("W047", { + line: data.line, + char: data.char, + data: [ data.value ] + }); + } + + if (/^00+/.test(data.value)) { + // Multiple leading zeroes. + linter.warn("W046", { + line: data.line, + char: data.char, + data: [ data.value ] + }); + } + }); + + // Warn about script URLs. + + linter.on("String", function style_scanJavaScriptURLs(data) { + var re = /^(?:javascript|jscript|ecmascript|vbscript|mocha|livescript)\s*:/i; + + if (linter.getOption("scripturl")) { + return; + } + + if (re.test(data.value)) { + linter.warn("W107", { + line: data.line, + char: data.char + }); + } + }); +}; +})() +},{}],7:[function(require,module,exports){ +(function(){"use strict"; + +var _ = require("underscore"); + +var errors = { + // JSHint options + E001: "Bad option: '{a}'.", + E002: "Bad option value.", + + // JSHint input + E003: "Expected a JSON value.", + E004: "Input is neither a string nor an array of strings.", + E005: "Input is empty.", + E006: "Unexpected early end of program.", + + // Strict mode + E007: "Missing \"use strict\" statement.", + E008: "Strict violation.", + E009: "Option 'validthis' can't be used in a global scope.", + E010: "'with' is not allowed in strict mode.", + + // Constants + E011: "const '{a}' has already been declared.", + E012: "const '{a}' is initialized to 'undefined'.", + E013: "Attempting to override '{a}' which is a constant.", + + // Regular expressions + E014: "A regular expression literal can be confused with '/='.", + E015: "Unclosed regular expression.", + E016: "Invalid regular expression.", + + // Tokens + E017: "Unclosed comment.", + E018: "Unbegun comment.", + E019: "Unmatched '{a}'.", + E020: "Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.", + E021: "Expected '{a}' and instead saw '{b}'.", + E022: "Line breaking error '{a}'.", + E023: "Missing '{a}'.", + E024: "Unexpected '{a}'.", + E025: "Missing ':' on a case clause.", + E026: "Missing '}' to match '{' from line {a}.", + E027: "Missing ']' to match '[' form line {a}.", + E028: "Illegal comma.", + E029: "Unclosed string.", + + // Everything else + E030: "Expected an identifier and instead saw '{a}'.", + E031: "Bad assignment.", // FIXME: Rephrase + E032: "Expected a small integer or 'false' and instead saw '{a}'.", + E033: "Expected an operator and instead saw '{a}'.", + E034: "get/set are ES5 features.", + E035: "Missing property name.", + E036: "Expected to see a statement and instead saw a block.", + E037: null, // Vacant + E038: null, // Vacant + E039: "Function declarations are not invocable. Wrap the whole function invocation in parens.", + E040: "Each value should have its own case label.", + E041: "Unrecoverable syntax error.", + E042: "Stopping.", + E043: "Too many errors.", + E044: "'{a}' is already defined and can't be redefined.", + E045: "Invalid for each loop.", + E046: "A yield statement shall be within a generator function (with syntax: `function*`)", + E047: "A generator function shall contain a yield statement.", + E048: "Let declaration not directly within block.", + E049: "A {a} cannot be named '{b}'.", + E050: "Mozilla requires the yield expression to be parenthesized here.", + E051: "Regular parameters cannot come after default parameters." +}; + +var warnings = { + W001: "'hasOwnProperty' is a really bad name.", + W002: "Value of '{a}' may be overwritten in IE 8 and earlier.", + W003: "'{a}' was used before it was defined.", + W004: "'{a}' is already defined.", + W005: "A dot following a number can be confused with a decimal point.", + W006: "Confusing minuses.", + W007: "Confusing pluses.", + W008: "A leading decimal point can be confused with a dot: '{a}'.", + W009: "The array literal notation [] is preferrable.", + W010: "The object literal notation {} is preferrable.", + W011: "Unexpected space after '{a}'.", + W012: "Unexpected space before '{a}'.", + W013: "Missing space after '{a}'.", + W014: "Bad line breaking before '{a}'.", + W015: "Expected '{a}' to have an indentation at {b} instead at {c}.", + W016: "Unexpected use of '{a}'.", + W017: "Bad operand.", + W018: "Confusing use of '{a}'.", + W019: "Use the isNaN function to compare with NaN.", + W020: "Read only.", + W021: "'{a}' is a function.", + W022: "Do not assign to the exception parameter.", + W023: "Expected an identifier in an assignment and instead saw a function invocation.", + W024: "Expected an identifier and instead saw '{a}' (a reserved word).", + W025: "Missing name in function declaration.", + W026: "Inner functions should be listed at the top of the outer function.", + W027: "Unreachable '{a}' after '{b}'.", + W028: "Label '{a}' on {b} statement.", + W030: "Expected an assignment or function call and instead saw an expression.", + W031: "Do not use 'new' for side effects.", + W032: "Unnecessary semicolon.", + W033: "Missing semicolon.", + W034: "Unnecessary directive \"{a}\".", + W035: "Empty block.", + W036: "Unexpected /*member '{a}'.", + W037: "'{a}' is a statement label.", + W038: "'{a}' used out of scope.", + W039: "'{a}' is not allowed.", + W040: "Possible strict violation.", + W041: "Use '{a}' to compare with '{b}'.", + W042: "Avoid EOL escaping.", + W043: "Bad escaping of EOL. Use option multistr if needed.", + W044: "Bad or unnecessary escaping.", + W045: "Bad number '{a}'.", + W046: "Don't use extra leading zeros '{a}'.", + W047: "A trailing decimal point can be confused with a dot: '{a}'.", + W048: "Unexpected control character in regular expression.", + W049: "Unexpected escaped character '{a}' in regular expression.", + W050: "JavaScript URL.", + W051: "Variables should not be deleted.", + W052: "Unexpected '{a}'.", + W053: "Do not use {a} as a constructor.", + W054: "The Function constructor is a form of eval.", + W055: "A constructor name should start with an uppercase letter.", + W056: "Bad constructor.", + W057: "Weird construction. Is 'new' unnecessary?", + W058: "Missing '()' invoking a constructor.", + W059: "Avoid arguments.{a}.", + W060: "document.write can be a form of eval.", + W061: "eval can be harmful.", + W062: "Wrap an immediate function invocation in parens " + + "to assist the reader in understanding that the expression " + + "is the result of a function, and not the function itself.", + W063: "Math is not a function.", + W064: "Missing 'new' prefix when invoking a constructor.", + W065: "Missing radix parameter.", + W066: "Implied eval. Consider passing a function instead of a string.", + W067: "Bad invocation.", + W068: "Wrapping non-IIFE function literals in parens is unnecessary.", + W069: "['{a}'] is better written in dot notation.", + W070: "Extra comma. (it breaks older versions of IE)", + W071: "This function has too many statements. ({a})", + W072: "This function has too many parameters. ({a})", + W073: "Blocks are nested too deeply. ({a})", + W074: "This function's cyclomatic complexity is too high. ({a})", + W075: "Duplicate key '{a}'.", + W076: "Unexpected parameter '{a}' in get {b} function.", + W077: "Expected a single parameter in set {a} function.", + W078: "Setter is defined without getter.", + W079: "Redefinition of '{a}'.", + W080: "It's not necessary to initialize '{a}' to 'undefined'.", + W081: "Too many var statements.", + W082: "Function declarations should not be placed in blocks. " + + "Use a function expression or move the statement to the top of " + + "the outer function.", + W083: "Don't make functions within a loop.", + W084: "Expected a conditional expression and instead saw an assignment.", + W085: "Don't use 'with'.", + W086: "Expected a 'break' statement before '{a}'.", + W087: "Forgotten 'debugger' statement?", + W088: "Creating global 'for' variable. Should be 'for (var {a} ...'.", + W089: "The body of a for in should be wrapped in an if statement to filter " + + "unwanted properties from the prototype.", + W090: "'{a}' is not a statement label.", + W091: "'{a}' is out of scope.", + W092: "Wrap the /regexp/ literal in parens to disambiguate the slash operator.", + W093: "Did you mean to return a conditional instead of an assignment?", + W094: "Unexpected comma.", + W095: "Expected a string and instead saw {a}.", + W096: "The '{a}' key may produce unexpected results.", + W097: "Use the function form of \"use strict\".", + W098: "'{a}' is defined but never used.", + W099: "Mixed spaces and tabs.", + W100: "This character may get silently deleted by one or more browsers.", + W101: "Line is too long.", + W102: "Trailing whitespace.", + W103: "The '{a}' property is deprecated.", + W104: "'{a}' is only available in JavaScript 1.7.", + W105: "Unexpected {a} in '{b}'.", + W106: "Identifier '{a}' is not in camel case.", + W107: "Script URL.", + W108: "Strings must use doublequote.", + W109: "Strings must use singlequote.", + W110: "Mixed double and single quotes.", + W112: "Unclosed string.", + W113: "Control character in string: {a}.", + W114: "Avoid {a}.", + W115: "Octal literals are not allowed in strict mode.", + W116: "Expected '{a}' and instead saw '{b}'.", + W117: "'{a}' is not defined.", + W118: "'{a}' is only available in Mozilla JavaScript extensions (use moz option).", + W119: "'{a}' is only available in ES6 (use esnext option).", + W120: "You might be leaking a variable ({a}) here." +}; + +var info = { + I001: "Comma warnings can be turned off with 'laxcomma'.", + I002: "Reserved words as properties can be used under the 'es5' option.", + I003: "ES5 option is now set per default" +}; + +exports.errors = {}; +exports.warnings = {}; +exports.info = {}; + +_.each(errors, function (desc, code) { + exports.errors[code] = { code: code, desc: desc }; +}); + +_.each(warnings, function (desc, code) { + exports.warnings[code] = { code: code, desc: desc }; +}); + +_.each(info, function (desc, code) { + exports.info[code] = { code: code, desc: desc }; +}); + +})() +},{"underscore":8}],9:[function(require,module,exports){ +(function(){/* + * Lexical analysis and token construction. + */ + +"use strict"; + +var _ = require("underscore"); +var events = require("events"); +var reg = require("./reg.js"); +var state = require("./state.js").state; + +// Some of these token types are from JavaScript Parser API +// while others are specific to JSHint parser. +// JS Parser API: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API + +var Token = { + Identifier: 1, + Punctuator: 2, + NumericLiteral: 3, + StringLiteral: 4, + Comment: 5, + Keyword: 6, + NullLiteral: 7, + BooleanLiteral: 8, + RegExp: 9 +}; + +// This is auto generated from the unicode tables. +// The tables are at: +// http://www.fileformat.info/info/unicode/category/Lu/list.htm +// http://www.fileformat.info/info/unicode/category/Ll/list.htm +// http://www.fileformat.info/info/unicode/category/Lt/list.htm +// http://www.fileformat.info/info/unicode/category/Lm/list.htm +// http://www.fileformat.info/info/unicode/category/Lo/list.htm +// http://www.fileformat.info/info/unicode/category/Nl/list.htm + +var unicodeLetterTable = [ + 170, 170, 181, 181, 186, 186, 192, 214, + 216, 246, 248, 705, 710, 721, 736, 740, 748, 748, 750, 750, + 880, 884, 886, 887, 890, 893, 902, 902, 904, 906, 908, 908, + 910, 929, 931, 1013, 1015, 1153, 1162, 1319, 1329, 1366, + 1369, 1369, 1377, 1415, 1488, 1514, 1520, 1522, 1568, 1610, + 1646, 1647, 1649, 1747, 1749, 1749, 1765, 1766, 1774, 1775, + 1786, 1788, 1791, 1791, 1808, 1808, 1810, 1839, 1869, 1957, + 1969, 1969, 1994, 2026, 2036, 2037, 2042, 2042, 2048, 2069, + 2074, 2074, 2084, 2084, 2088, 2088, 2112, 2136, 2308, 2361, + 2365, 2365, 2384, 2384, 2392, 2401, 2417, 2423, 2425, 2431, + 2437, 2444, 2447, 2448, 2451, 2472, 2474, 2480, 2482, 2482, + 2486, 2489, 2493, 2493, 2510, 2510, 2524, 2525, 2527, 2529, + 2544, 2545, 2565, 2570, 2575, 2576, 2579, 2600, 2602, 2608, + 2610, 2611, 2613, 2614, 2616, 2617, 2649, 2652, 2654, 2654, + 2674, 2676, 2693, 2701, 2703, 2705, 2707, 2728, 2730, 2736, + 2738, 2739, 2741, 2745, 2749, 2749, 2768, 2768, 2784, 2785, + 2821, 2828, 2831, 2832, 2835, 2856, 2858, 2864, 2866, 2867, + 2869, 2873, 2877, 2877, 2908, 2909, 2911, 2913, 2929, 2929, + 2947, 2947, 2949, 2954, 2958, 2960, 2962, 2965, 2969, 2970, + 2972, 2972, 2974, 2975, 2979, 2980, 2984, 2986, 2990, 3001, + 3024, 3024, 3077, 3084, 3086, 3088, 3090, 3112, 3114, 3123, + 3125, 3129, 3133, 3133, 3160, 3161, 3168, 3169, 3205, 3212, + 3214, 3216, 3218, 3240, 3242, 3251, 3253, 3257, 3261, 3261, + 3294, 3294, 3296, 3297, 3313, 3314, 3333, 3340, 3342, 3344, + 3346, 3386, 3389, 3389, 3406, 3406, 3424, 3425, 3450, 3455, + 3461, 3478, 3482, 3505, 3507, 3515, 3517, 3517, 3520, 3526, + 3585, 3632, 3634, 3635, 3648, 3654, 3713, 3714, 3716, 3716, + 3719, 3720, 3722, 3722, 3725, 3725, 3732, 3735, 3737, 3743, + 3745, 3747, 3749, 3749, 3751, 3751, 3754, 3755, 3757, 3760, + 3762, 3763, 3773, 3773, 3776, 3780, 3782, 3782, 3804, 3805, + 3840, 3840, 3904, 3911, 3913, 3948, 3976, 3980, 4096, 4138, + 4159, 4159, 4176, 4181, 4186, 4189, 4193, 4193, 4197, 4198, + 4206, 4208, 4213, 4225, 4238, 4238, 4256, 4293, 4304, 4346, + 4348, 4348, 4352, 4680, 4682, 4685, 4688, 4694, 4696, 4696, + 4698, 4701, 4704, 4744, 4746, 4749, 4752, 4784, 4786, 4789, + 4792, 4798, 4800, 4800, 4802, 4805, 4808, 4822, 4824, 4880, + 4882, 4885, 4888, 4954, 4992, 5007, 5024, 5108, 5121, 5740, + 5743, 5759, 5761, 5786, 5792, 5866, 5870, 5872, 5888, 5900, + 5902, 5905, 5920, 5937, 5952, 5969, 5984, 5996, 5998, 6000, + 6016, 6067, 6103, 6103, 6108, 6108, 6176, 6263, 6272, 6312, + 6314, 6314, 6320, 6389, 6400, 6428, 6480, 6509, 6512, 6516, + 6528, 6571, 6593, 6599, 6656, 6678, 6688, 6740, 6823, 6823, + 6917, 6963, 6981, 6987, 7043, 7072, 7086, 7087, 7104, 7141, + 7168, 7203, 7245, 7247, 7258, 7293, 7401, 7404, 7406, 7409, + 7424, 7615, 7680, 7957, 7960, 7965, 7968, 8005, 8008, 8013, + 8016, 8023, 8025, 8025, 8027, 8027, 8029, 8029, 8031, 8061, + 8064, 8116, 8118, 8124, 8126, 8126, 8130, 8132, 8134, 8140, + 8144, 8147, 8150, 8155, 8160, 8172, 8178, 8180, 8182, 8188, + 8305, 8305, 8319, 8319, 8336, 8348, 8450, 8450, 8455, 8455, + 8458, 8467, 8469, 8469, 8473, 8477, 8484, 8484, 8486, 8486, + 8488, 8488, 8490, 8493, 8495, 8505, 8508, 8511, 8517, 8521, + 8526, 8526, 8544, 8584, 11264, 11310, 11312, 11358, + 11360, 11492, 11499, 11502, 11520, 11557, 11568, 11621, + 11631, 11631, 11648, 11670, 11680, 11686, 11688, 11694, + 11696, 11702, 11704, 11710, 11712, 11718, 11720, 11726, + 11728, 11734, 11736, 11742, 11823, 11823, 12293, 12295, + 12321, 12329, 12337, 12341, 12344, 12348, 12353, 12438, + 12445, 12447, 12449, 12538, 12540, 12543, 12549, 12589, + 12593, 12686, 12704, 12730, 12784, 12799, 13312, 13312, + 19893, 19893, 19968, 19968, 40907, 40907, 40960, 42124, + 42192, 42237, 42240, 42508, 42512, 42527, 42538, 42539, + 42560, 42606, 42623, 42647, 42656, 42735, 42775, 42783, + 42786, 42888, 42891, 42894, 42896, 42897, 42912, 42921, + 43002, 43009, 43011, 43013, 43015, 43018, 43020, 43042, + 43072, 43123, 43138, 43187, 43250, 43255, 43259, 43259, + 43274, 43301, 43312, 43334, 43360, 43388, 43396, 43442, + 43471, 43471, 43520, 43560, 43584, 43586, 43588, 43595, + 43616, 43638, 43642, 43642, 43648, 43695, 43697, 43697, + 43701, 43702, 43705, 43709, 43712, 43712, 43714, 43714, + 43739, 43741, 43777, 43782, 43785, 43790, 43793, 43798, + 43808, 43814, 43816, 43822, 43968, 44002, 44032, 44032, + 55203, 55203, 55216, 55238, 55243, 55291, 63744, 64045, + 64048, 64109, 64112, 64217, 64256, 64262, 64275, 64279, + 64285, 64285, 64287, 64296, 64298, 64310, 64312, 64316, + 64318, 64318, 64320, 64321, 64323, 64324, 64326, 64433, + 64467, 64829, 64848, 64911, 64914, 64967, 65008, 65019, + 65136, 65140, 65142, 65276, 65313, 65338, 65345, 65370, + 65382, 65470, 65474, 65479, 65482, 65487, 65490, 65495, + 65498, 65500, 65536, 65547, 65549, 65574, 65576, 65594, + 65596, 65597, 65599, 65613, 65616, 65629, 65664, 65786, + 65856, 65908, 66176, 66204, 66208, 66256, 66304, 66334, + 66352, 66378, 66432, 66461, 66464, 66499, 66504, 66511, + 66513, 66517, 66560, 66717, 67584, 67589, 67592, 67592, + 67594, 67637, 67639, 67640, 67644, 67644, 67647, 67669, + 67840, 67861, 67872, 67897, 68096, 68096, 68112, 68115, + 68117, 68119, 68121, 68147, 68192, 68220, 68352, 68405, + 68416, 68437, 68448, 68466, 68608, 68680, 69635, 69687, + 69763, 69807, 73728, 74606, 74752, 74850, 77824, 78894, + 92160, 92728, 110592, 110593, 119808, 119892, 119894, 119964, + 119966, 119967, 119970, 119970, 119973, 119974, 119977, 119980, + 119982, 119993, 119995, 119995, 119997, 120003, 120005, 120069, + 120071, 120074, 120077, 120084, 120086, 120092, 120094, 120121, + 120123, 120126, 120128, 120132, 120134, 120134, 120138, 120144, + 120146, 120485, 120488, 120512, 120514, 120538, 120540, 120570, + 120572, 120596, 120598, 120628, 120630, 120654, 120656, 120686, + 120688, 120712, 120714, 120744, 120746, 120770, 120772, 120779, + 131072, 131072, 173782, 173782, 173824, 173824, 177972, 177972, + 177984, 177984, 178205, 178205, 194560, 195101 +]; + +var identifierStartTable = []; + +for (var i = 0; i < 128; i++) { + identifierStartTable[i] = + i === 36 || // $ + i >= 65 && i <= 90 || // A-Z + i === 95 || // _ + i >= 97 && i <= 122; // a-z +} + +var identifierPartTable = []; + +for (var i = 0; i < 128; i++) { + identifierPartTable[i] = + identifierStartTable[i] || // $, _, A-Z, a-z + i >= 48 && i <= 57; // 0-9 +} + +// Object that handles postponed lexing verifications that checks the parsed +// environment state. + +function asyncTrigger() { + var _checks = []; + + return { + push: function (fn) { + _checks.push(fn); + }, + + check: function () { + for (var check = 0; check < _checks.length; ++check) { + _checks[check](); + } + + _checks.splice(0, _checks.length); + } + }; +} + +/* + * Lexer for JSHint. + * + * This object does a char-by-char scan of the provided source code + * and produces a sequence of tokens. + * + * var lex = new Lexer("var i = 0;"); + * lex.start(); + * lex.token(); // returns the next token + * + * You have to use the token() method to move the lexer forward + * but you don't have to use its return value to get tokens. In addition + * to token() method returning the next token, the Lexer object also + * emits events. + * + * lex.on("Identifier", function (data) { + * if (data.name.indexOf("_") >= 0) { + * // Produce a warning. + * } + * }); + * + * Note that the token() method returns tokens in a JSLint-compatible + * format while the event emitter uses a slightly modified version of + * Mozilla's JavaScript Parser API. Eventually, we will move away from + * JSLint format. + */ +function Lexer(source) { + var lines = source; + + if (typeof lines === "string") { + lines = lines + .replace(/\r\n/g, "\n") + .replace(/\r/g, "\n") + .split("\n"); + } + + // If the first line is a shebang (#!), make it a blank and move on. + // Shebangs are used by Node scripts. + + if (lines[0] && lines[0].substr(0, 2) === "#!") { + lines[0] = ""; + } + + this.emitter = new events.EventEmitter(); + this.source = source; + this.setLines(lines); + this.prereg = true; + + this.line = 0; + this.char = 1; + this.from = 1; + this.input = ""; + + for (var i = 0; i < state.option.indent; i += 1) { + state.tab += " "; + } +} + +Lexer.prototype = { + _lines: [], + + getLines: function () { + this._lines = state.lines; + return this._lines; + }, + + setLines: function (val) { + this._lines = val; + state.lines = this._lines; + }, + + /* + * Return the next i character without actually moving the + * char pointer. + */ + peek: function (i) { + return this.input.charAt(i || 0); + }, + + /* + * Move the char pointer forward i times. + */ + skip: function (i) { + i = i || 1; + this.char += i; + this.input = this.input.slice(i); + }, + + /* + * Subscribe to a token event. The API for this method is similar + * Underscore.js i.e. you can subscribe to multiple events with + * one call: + * + * lex.on("Identifier Number", function (data) { + * // ... + * }); + */ + on: function (names, listener) { + names.split(" ").forEach(function (name) { + this.emitter.on(name, listener); + }.bind(this)); + }, + + /* + * Trigger a token event. All arguments will be passed to each + * listener. + */ + trigger: function () { + this.emitter.emit.apply(this.emitter, Array.prototype.slice.call(arguments)); + }, + + /* + * Postpone a token event. the checking condition is set as + * last parameter, and the trigger function is called in a + * stored callback. To be later called using the check() function + * by the parser. This avoids parser's peek() to give the lexer + * a false context. + */ + triggerAsync: function (type, args, checks, fn) { + checks.push(function () { + if (fn()) { + this.trigger(type, args); + } + }.bind(this)); + }, + + /* + * Extract a punctuator out of the next sequence of characters + * or return 'null' if its not possible. + * + * This method's implementation was heavily influenced by the + * scanPunctuator function in the Esprima parser's source code. + */ + scanPunctuator: function () { + var ch1 = this.peek(); + var ch2, ch3, ch4; + + switch (ch1) { + // Most common single-character punctuators + case ".": + if ((/^[0-9]$/).test(this.peek(1))) { + return null; + } + if (this.peek(1) === "." && this.peek(2) === ".") { + return { + type: Token.Punctuator, + value: "..." + }; + } + /* falls through */ + case "(": + case ")": + case ";": + case ",": + case "{": + case "}": + case "[": + case "]": + case ":": + case "~": + case "?": + return { + type: Token.Punctuator, + value: ch1 + }; + + // A pound sign (for Node shebangs) + case "#": + return { + type: Token.Punctuator, + value: ch1 + }; + + // We're at the end of input + case "": + return null; + } + + // Peek more characters + + ch2 = this.peek(1); + ch3 = this.peek(2); + ch4 = this.peek(3); + + // 4-character punctuator: >>>= + + if (ch1 === ">" && ch2 === ">" && ch3 === ">" && ch4 === "=") { + return { + type: Token.Punctuator, + value: ">>>=" + }; + } + + // 3-character punctuators: === !== >>> <<= >>= + + if (ch1 === "=" && ch2 === "=" && ch3 === "=") { + return { + type: Token.Punctuator, + value: "===" + }; + } + + if (ch1 === "!" && ch2 === "=" && ch3 === "=") { + return { + type: Token.Punctuator, + value: "!==" + }; + } + + if (ch1 === ">" && ch2 === ">" && ch3 === ">") { + return { + type: Token.Punctuator, + value: ">>>" + }; + } + + if (ch1 === "<" && ch2 === "<" && ch3 === "=") { + return { + type: Token.Punctuator, + value: "<<=" + }; + } + + if (ch1 === ">" && ch2 === ">" && ch3 === "=") { + return { + type: Token.Punctuator, + value: ">>=" + }; + } + + // Fat arrow punctuator + if (ch1 === "=" && ch2 === ">") { + return { + type: Token.Punctuator, + value: ch1 + ch2 + }; + } + + // 2-character punctuators: <= >= == != ++ -- << >> && || + // += -= *= %= &= |= ^= (but not /=, see below) + if (ch1 === ch2 && ("+-<>&|".indexOf(ch1) >= 0)) { + return { + type: Token.Punctuator, + value: ch1 + ch2 + }; + } + + if ("<>=!+-*%&|^".indexOf(ch1) >= 0) { + if (ch2 === "=") { + return { + type: Token.Punctuator, + value: ch1 + ch2 + }; + } + + return { + type: Token.Punctuator, + value: ch1 + }; + } + + // Special case: /=. We need to make sure that this is an + // operator and not a regular expression. + + if (ch1 === "/") { + if (ch2 === "=" && /\/=(?!(\S*\/[gim]?))/.test(this.input)) { + // /= is not a part of a regular expression, return it as a + // punctuator. + return { + type: Token.Punctuator, + value: "/=" + }; + } + + return { + type: Token.Punctuator, + value: "/" + }; + } + + return null; + }, + + /* + * Extract a comment out of the next sequence of characters and/or + * lines or return 'null' if its not possible. Since comments can + * span across multiple lines this method has to move the char + * pointer. + * + * In addition to normal JavaScript comments (// and /*) this method + * also recognizes JSHint- and JSLint-specific comments such as + * /*jshint, /*jslint, /*globals and so on. + */ + scanComments: function () { + var ch1 = this.peek(); + var ch2 = this.peek(1); + var rest = this.input.substr(2); + var startLine = this.line; + var startChar = this.char; + + // Create a comment token object and make sure it + // has all the data JSHint needs to work with special + // comments. + + function commentToken(label, body, opt) { + var special = ["jshint", "jslint", "members", "member", "globals", "global", "exported"]; + var isSpecial = false; + var value = label + body; + var commentType = "plain"; + opt = opt || {}; + + if (opt.isMultiline) { + value += "*/"; + } + + special.forEach(function (str) { + if (isSpecial) { + return; + } + + // Don't recognize any special comments other than jshint for single-line + // comments. This introduced many problems with legit comments. + if (label === "//" && str !== "jshint") { + return; + } + + if (body.substr(0, str.length) === str) { + isSpecial = true; + label = label + str; + body = body.substr(str.length); + } + + if (!isSpecial && body.charAt(0) === " " && body.substr(1, str.length) === str) { + isSpecial = true; + label = label + " " + str; + body = body.substr(str.length + 1); + } + + if (!isSpecial) { + return; + } + + switch (str) { + case "member": + commentType = "members"; + break; + case "global": + commentType = "globals"; + break; + default: + commentType = str; + } + }); + + return { + type: Token.Comment, + commentType: commentType, + value: value, + body: body, + isSpecial: isSpecial, + isMultiline: opt.isMultiline || false, + isMalformed: opt.isMalformed || false + }; + } + + // End of unbegun comment. Raise an error and skip that input. + if (ch1 === "*" && ch2 === "/") { + this.trigger("error", { + code: "E018", + line: startLine, + character: startChar + }); + + this.skip(2); + return null; + } + + // Comments must start either with // or /* + if (ch1 !== "/" || (ch2 !== "*" && ch2 !== "/")) { + return null; + } + + // One-line comment + if (ch2 === "/") { + this.skip(this.input.length); // Skip to the EOL. + return commentToken("//", rest); + } + + var body = ""; + + /* Multi-line comment */ + if (ch2 === "*") { + this.skip(2); + + while (this.peek() !== "*" || this.peek(1) !== "/") { + if (this.peek() === "") { // End of Line + body += "\n"; + + // If we hit EOF and our comment is still unclosed, + // trigger an error and end the comment implicitly. + if (!this.nextLine()) { + this.trigger("error", { + code: "E017", + line: startLine, + character: startChar + }); + + return commentToken("/*", body, { + isMultiline: true, + isMalformed: true + }); + } + } else { + body += this.peek(); + this.skip(); + } + } + + this.skip(2); + return commentToken("/*", body, { isMultiline: true }); + } + }, + + /* + * Extract a keyword out of the next sequence of characters or + * return 'null' if its not possible. + */ + scanKeyword: function () { + var result = /^[a-zA-Z_$][a-zA-Z0-9_$]*/.exec(this.input); + var keywords = [ + "if", "in", "do", "var", "for", "new", + "try", "let", "this", "else", "case", + "void", "with", "enum", "while", "break", + "catch", "throw", "const", "yield", "class", + "super", "return", "typeof", "delete", + "switch", "export", "import", "default", + "finally", "extends", "function", "continue", + "debugger", "instanceof" + ]; + + if (result && keywords.indexOf(result[0]) >= 0) { + return { + type: Token.Keyword, + value: result[0] + }; + } + + return null; + }, + + /* + * Extract a JavaScript identifier out of the next sequence of + * characters or return 'null' if its not possible. In addition, + * to Identifier this method can also produce BooleanLiteral + * (true/false) and NullLiteral (null). + */ + scanIdentifier: function () { + var id = ""; + var index = 0; + var type, char; + + // Detects any character in the Unicode categories "Uppercase + // letter (Lu)", "Lowercase letter (Ll)", "Titlecase letter + // (Lt)", "Modifier letter (Lm)", "Other letter (Lo)", or + // "Letter number (Nl)". + // + // Both approach and unicodeLetterTable were borrowed from + // Google's Traceur. + + function isUnicodeLetter(code) { + for (var i = 0; i < unicodeLetterTable.length;) { + if (code < unicodeLetterTable[i++]) { + return false; + } + + if (code <= unicodeLetterTable[i++]) { + return true; + } + } + + return false; + } + + function isHexDigit(str) { + return (/^[0-9a-fA-F]$/).test(str); + } + + var readUnicodeEscapeSequence = function () { + /*jshint validthis:true */ + index += 1; + + if (this.peek(index) !== "u") { + return null; + } + + var ch1 = this.peek(index + 1); + var ch2 = this.peek(index + 2); + var ch3 = this.peek(index + 3); + var ch4 = this.peek(index + 4); + var code; + + if (isHexDigit(ch1) && isHexDigit(ch2) && isHexDigit(ch3) && isHexDigit(ch4)) { + code = parseInt(ch1 + ch2 + ch3 + ch4, 16); + + if (isUnicodeLetter(code)) { + index += 5; + return "\\u" + ch1 + ch2 + ch3 + ch4; + } + + return null; + } + + return null; + }.bind(this); + + var getIdentifierStart = function () { + /*jshint validthis:true */ + var chr = this.peek(index); + var code = chr.charCodeAt(0); + + if (code === 92) { + return readUnicodeEscapeSequence(); + } + + if (code < 128) { + if (identifierStartTable[code]) { + index += 1; + return chr; + } + + return null; + } + + if (isUnicodeLetter(code)) { + index += 1; + return chr; + } + + return null; + }.bind(this); + + var getIdentifierPart = function () { + /*jshint validthis:true */ + var chr = this.peek(index); + var code = chr.charCodeAt(0); + + if (code === 92) { + return readUnicodeEscapeSequence(); + } + + if (code < 128) { + if (identifierPartTable[code]) { + index += 1; + return chr; + } + + return null; + } + + if (isUnicodeLetter(code)) { + index += 1; + return chr; + } + + return null; + }.bind(this); + + char = getIdentifierStart(); + if (char === null) { + return null; + } + + id = char; + for (;;) { + char = getIdentifierPart(); + + if (char === null) { + break; + } + + id += char; + } + + switch (id) { + case "true": + case "false": + type = Token.BooleanLiteral; + break; + case "null": + type = Token.NullLiteral; + break; + default: + type = Token.Identifier; + } + + return { + type: type, + value: id + }; + }, + + /* + * Extract a numeric literal out of the next sequence of + * characters or return 'null' if its not possible. This method + * supports all numeric literals described in section 7.8.3 + * of the EcmaScript 5 specification. + * + * This method's implementation was heavily influenced by the + * scanNumericLiteral function in the Esprima parser's source code. + */ + scanNumericLiteral: function () { + var index = 0; + var value = ""; + var length = this.input.length; + var char = this.peek(index); + var bad; + + function isDecimalDigit(str) { + return (/^[0-9]$/).test(str); + } + + function isOctalDigit(str) { + return (/^[0-7]$/).test(str); + } + + function isHexDigit(str) { + return (/^[0-9a-fA-F]$/).test(str); + } + + function isIdentifierStart(ch) { + return (ch === "$") || (ch === "_") || (ch === "\\") || + (ch >= "a" && ch <= "z") || (ch >= "A" && ch <= "Z"); + } + + // Numbers must start either with a decimal digit or a point. + + if (char !== "." && !isDecimalDigit(char)) { + return null; + } + + if (char !== ".") { + value = this.peek(index); + index += 1; + char = this.peek(index); + + if (value === "0") { + // Base-16 numbers. + if (char === "x" || char === "X") { + index += 1; + value += char; + + while (index < length) { + char = this.peek(index); + if (!isHexDigit(char)) { + break; + } + value += char; + index += 1; + } + + if (value.length <= 2) { // 0x + return { + type: Token.NumericLiteral, + value: value, + isMalformed: true + }; + } + + if (index < length) { + char = this.peek(index); + if (isIdentifierStart(char)) { + return null; + } + } + + return { + type: Token.NumericLiteral, + value: value, + base: 16, + isMalformed: false + }; + } + + // Base-8 numbers. + if (isOctalDigit(char)) { + index += 1; + value += char; + bad = false; + + while (index < length) { + char = this.peek(index); + + // Numbers like '019' (note the 9) are not valid octals + // but we still parse them and mark as malformed. + + if (isDecimalDigit(char)) { + bad = true; + } else if (!isOctalDigit(char)) { + break; + } + value += char; + index += 1; + } + + if (index < length) { + char = this.peek(index); + if (isIdentifierStart(char)) { + return null; + } + } + + return { + type: Token.NumericLiteral, + value: value, + base: 8, + isMalformed: false + }; + } + + // Decimal numbers that start with '0' such as '09' are illegal + // but we still parse them and return as malformed. + + if (isDecimalDigit(char)) { + index += 1; + value += char; + } + } + + while (index < length) { + char = this.peek(index); + if (!isDecimalDigit(char)) { + break; + } + value += char; + index += 1; + } + } + + // Decimal digits. + + if (char === ".") { + value += char; + index += 1; + + while (index < length) { + char = this.peek(index); + if (!isDecimalDigit(char)) { + break; + } + value += char; + index += 1; + } + } + + // Exponent part. + + if (char === "e" || char === "E") { + value += char; + index += 1; + char = this.peek(index); + + if (char === "+" || char === "-") { + value += this.peek(index); + index += 1; + } + + char = this.peek(index); + if (isDecimalDigit(char)) { + value += char; + index += 1; + + while (index < length) { + char = this.peek(index); + if (!isDecimalDigit(char)) { + break; + } + value += char; + index += 1; + } + } else { + return null; + } + } + + if (index < length) { + char = this.peek(index); + if (isIdentifierStart(char)) { + return null; + } + } + + return { + type: Token.NumericLiteral, + value: value, + base: 10, + isMalformed: !isFinite(value) + }; + }, + + /* + * Extract a string out of the next sequence of characters and/or + * lines or return 'null' if its not possible. Since strings can + * span across multiple lines this method has to move the char + * pointer. + * + * This method recognizes pseudo-multiline JavaScript strings: + * + * var str = "hello\ + * world"; + */ + scanStringLiteral: function (checks) { + /*jshint loopfunc:true */ + var quote = this.peek(); + + // String must start with a quote. + if (quote !== "\"" && quote !== "'") { + return null; + } + + // In JSON strings must always use double quotes. + this.triggerAsync("warning", { + code: "W108", + line: this.line, + character: this.char // +1? + }, checks, function () { return state.jsonMode && quote !== "\""; }); + + var value = ""; + var startLine = this.line; + var startChar = this.char; + var allowNewLine = false; + + this.skip(); + + while (this.peek() !== quote) { + while (this.peek() === "") { // End Of Line + + // If an EOL is not preceded by a backslash, show a warning + // and proceed like it was a legit multi-line string where + // author simply forgot to escape the newline symbol. + // + // Another approach is to implicitly close a string on EOL + // but it generates too many false positives. + + if (!allowNewLine) { + this.trigger("warning", { + code: "W112", + line: this.line, + character: this.char + }); + } else { + allowNewLine = false; + + // Otherwise show a warning if multistr option was not set. + // For JSON, show warning no matter what. + + this.triggerAsync("warning", { + code: "W043", + line: this.line, + character: this.char + }, checks, function () { return !state.option.multistr; }); + + this.triggerAsync("warning", { + code: "W042", + line: this.line, + character: this.char + }, checks, function () { return state.jsonMode && state.option.multistr; }); + } + + // If we get an EOF inside of an unclosed string, show an + // error and implicitly close it at the EOF point. + + if (!this.nextLine()) { + this.trigger("error", { + code: "E029", + line: startLine, + character: startChar + }); + + return { + type: Token.StringLiteral, + value: value, + isUnclosed: true, + quote: quote + }; + } + } + + allowNewLine = false; + var char = this.peek(); + var jump = 1; // A length of a jump, after we're done + // parsing this character. + + if (char < " ") { + // Warn about a control character in a string. + this.trigger("warning", { + code: "W113", + line: this.line, + character: this.char, + data: [ "" ] + }); + } + + // Special treatment for some escaped characters. + + if (char === "\\") { + this.skip(); + char = this.peek(); + + switch (char) { + case "'": + this.triggerAsync("warning", { + code: "W114", + line: this.line, + character: this.char, + data: [ "\\'" ] + }, checks, function () {return state.jsonMode; }); + break; + case "b": + char = "\b"; + break; + case "f": + char = "\f"; + break; + case "n": + char = "\n"; + break; + case "r": + char = "\r"; + break; + case "t": + char = "\t"; + break; + case "0": + char = "\0"; + + // Octal literals fail in strict mode. + // Check if the number is between 00 and 07. + var n = parseInt(this.peek(1), 10); + this.triggerAsync("warning", { + code: "W115", + line: this.line, + character: this.char + }, checks, + function () { return n >= 0 && n <= 7 && state.directive["use strict"]; }); + break; + case "u": + char = String.fromCharCode(parseInt(this.input.substr(1, 4), 16)); + jump = 5; + break; + case "v": + this.triggerAsync("warning", { + code: "W114", + line: this.line, + character: this.char, + data: [ "\\v" ] + }, checks, function () { return state.jsonMode; }); + + char = "\v"; + break; + case "x": + var x = parseInt(this.input.substr(1, 2), 16); + + this.triggerAsync("warning", { + code: "W114", + line: this.line, + character: this.char, + data: [ "\\x-" ] + }, checks, function () { return state.jsonMode; }); + + char = String.fromCharCode(x); + jump = 3; + break; + case "\\": + case "\"": + case "/": + break; + case "": + allowNewLine = true; + char = ""; + break; + case "!": + if (value.slice(value.length - 2) === "<") { + break; + } + + /*falls through */ + default: + // Weird escaping. + this.trigger("warning", { + code: "W044", + line: this.line, + character: this.char + }); + } + } + + value += char; + this.skip(jump); + } + + this.skip(); + return { + type: Token.StringLiteral, + value: value, + isUnclosed: false, + quote: quote + }; + }, + + /* + * Extract a regular expression out of the next sequence of + * characters and/or lines or return 'null' if its not possible. + * + * This method is platform dependent: it accepts almost any + * regular expression values but then tries to compile and run + * them using system's RegExp object. This means that there are + * rare edge cases where one JavaScript engine complains about + * your regular expression while others don't. + */ + scanRegExp: function () { + var index = 0; + var length = this.input.length; + var char = this.peek(); + var value = char; + var body = ""; + var flags = []; + var malformed = false; + var isCharSet = false; + var terminated; + + var scanUnexpectedChars = function () { + // Unexpected control character + if (char < " ") { + malformed = true; + this.trigger("warning", { + code: "W048", + line: this.line, + character: this.char + }); + } + + // Unexpected escaped character + if (char === "<") { + malformed = true; + this.trigger("warning", { + code: "W049", + line: this.line, + character: this.char, + data: [ char ] + }); + } + }.bind(this); + + // Regular expressions must start with '/' + if (!this.prereg || char !== "/") { + return null; + } + + index += 1; + terminated = false; + + // Try to get everything in between slashes. A couple of + // cases aside (see scanUnexpectedChars) we don't really + // care whether the resulting expression is valid or not. + // We will check that later using the RegExp object. + + while (index < length) { + char = this.peek(index); + value += char; + body += char; + + if (isCharSet) { + if (char === "]") { + if (this.peek(index - 1) !== "\\" || this.peek(index - 2) === "\\") { + isCharSet = false; + } + } + + if (char === "\\") { + index += 1; + char = this.peek(index); + body += char; + value += char; + + scanUnexpectedChars(); + } + + index += 1; + continue; + } + + if (char === "\\") { + index += 1; + char = this.peek(index); + body += char; + value += char; + + scanUnexpectedChars(); + + if (char === "/") { + index += 1; + continue; + } + + if (char === "[") { + index += 1; + continue; + } + } + + if (char === "[") { + isCharSet = true; + index += 1; + continue; + } + + if (char === "/") { + body = body.substr(0, body.length - 1); + terminated = true; + index += 1; + break; + } + + index += 1; + } + + // A regular expression that was never closed is an + // error from which we cannot recover. + + if (!terminated) { + this.trigger("error", { + code: "E015", + line: this.line, + character: this.from + }); + + return void this.trigger("fatal", { + line: this.line, + from: this.from + }); + } + + // Parse flags (if any). + + while (index < length) { + char = this.peek(index); + if (!/[gim]/.test(char)) { + break; + } + flags.push(char); + value += char; + index += 1; + } + + // Check regular expression for correctness. + + try { + new RegExp(body, flags.join("")); + } catch (err) { + malformed = true; + this.trigger("error", { + code: "E016", + line: this.line, + character: this.char, + data: [ err.message ] // Platform dependent! + }); + } + + return { + type: Token.RegExp, + value: value, + flags: flags, + isMalformed: malformed + }; + }, + + /* + * Scan for any occurence of mixed tabs and spaces. If smarttabs option + * is on, ignore tabs followed by spaces. + * + * Tabs followed by one space followed by a block comment are allowed. + */ + scanMixedSpacesAndTabs: function () { + var at, match; + + if (state.option.smarttabs) { + // Negative look-behind for "//" + match = this.input.match(/(\/\/|^\s?\*)? \t/); + at = match && !match[1] ? 0 : -1; + } else { + at = this.input.search(/ \t|\t [^\*]/); + } + + return at; + }, + + /* + * Scan for characters that get silently deleted by one or more browsers. + */ + scanUnsafeChars: function () { + return this.input.search(reg.unsafeChars); + }, + + /* + * Produce the next raw token or return 'null' if no tokens can be matched. + * This method skips over all space characters. + */ + next: function (checks) { + this.from = this.char; + + // Move to the next non-space character. + var start; + if (/\s/.test(this.peek())) { + start = this.char; + + while (/\s/.test(this.peek())) { + this.from += 1; + this.skip(); + } + + if (this.peek() === "") { // EOL + if (!/^\s*$/.test(this.getLines()[this.line - 1]) && state.option.trailing) { + this.trigger("warning", { code: "W102", line: this.line, character: start }); + } + } + } + + // Methods that work with multi-line structures and move the + // character pointer. + + var match = this.scanComments() || + this.scanStringLiteral(checks); + + if (match) { + return match; + } + + // Methods that don't move the character pointer. + + match = + this.scanRegExp() || + this.scanPunctuator() || + this.scanKeyword() || + this.scanIdentifier() || + this.scanNumericLiteral(); + + if (match) { + this.skip(match.value.length); + return match; + } + + // No token could be matched, give up. + + return null; + }, + + /* + * Switch to the next line and reset all char pointers. Once + * switched, this method also checks for mixed spaces and tabs + * and other minor warnings. + */ + nextLine: function () { + var char; + + if (this.line >= this.getLines().length) { + return false; + } + + this.input = this.getLines()[this.line]; + this.line += 1; + this.char = 1; + this.from = 1; + + char = this.scanMixedSpacesAndTabs(); + if (char >= 0) { + this.trigger("warning", { code: "W099", line: this.line, character: char + 1 }); + } + + this.input = this.input.replace(/\t/g, state.tab); + char = this.scanUnsafeChars(); + + if (char >= 0) { + this.trigger("warning", { code: "W100", line: this.line, character: char }); + } + + // If there is a limit on line length, warn when lines get too + // long. + + if (state.option.maxlen && state.option.maxlen < this.input.length) { + this.trigger("warning", { code: "W101", line: this.line, character: this.input.length }); + } + + return true; + }, + + /* + * This is simply a synonym for nextLine() method with a friendlier + * public name. + */ + start: function () { + this.nextLine(); + }, + + /* + * Produce the next token. This function is called by advance() to get + * the next token. It retuns a token in a JSLint-compatible format. + */ + token: function () { + /*jshint loopfunc:true */ + var checks = asyncTrigger(); + var token; + + + function isReserved(token, isProperty) { + if (!token.reserved) { + return false; + } + var meta = token.meta; + + if (meta && meta.isFutureReservedWord && state.option.inES5()) { + // ES3 FutureReservedWord in an ES5 environment. + if (!meta.es5) { + return false; + } + + // Some ES5 FutureReservedWord identifiers are active only + // within a strict mode environment. + if (meta.strictOnly) { + if (!state.option.strict && !state.directive["use strict"]) { + return false; + } + } + + if (isProperty) { + return false; + } + } + + return true; + } + + // Produce a token object. + var create = function (type, value, isProperty) { + /*jshint validthis:true */ + var obj; + + if (type !== "(endline)" && type !== "(end)") { + this.prereg = false; + } + + if (type === "(punctuator)") { + switch (value) { + case ".": + case ")": + case "~": + case "#": + case "]": + this.prereg = false; + break; + default: + this.prereg = true; + } + + obj = Object.create(state.syntax[value] || state.syntax["(error)"]); + } + + if (type === "(identifier)") { + if (value === "return" || value === "case" || value === "typeof") { + this.prereg = true; + } + + if (_.has(state.syntax, value)) { + obj = Object.create(state.syntax[value] || state.syntax["(error)"]); + + // If this can't be a reserved keyword, reset the object. + if (!isReserved(obj, isProperty && type === "(identifier)")) { + obj = null; + } + } + } + + if (!obj) { + obj = Object.create(state.syntax[type]); + } + + obj.identifier = (type === "(identifier)"); + obj.type = obj.type || type; + obj.value = value; + obj.line = this.line; + obj.character = this.char; + obj.from = this.from; + + if (isProperty && obj.identifier) { + obj.isProperty = isProperty; + } + + obj.check = checks.check; + + return obj; + }.bind(this); + + for (;;) { + if (!this.input.length) { + return create(this.nextLine() ? "(endline)" : "(end)", ""); + } + + token = this.next(checks); + + if (!token) { + if (this.input.length) { + // Unexpected character. + this.trigger("error", { + code: "E024", + line: this.line, + character: this.char, + data: [ this.peek() ] + }); + + this.input = ""; + } + + continue; + } + + switch (token.type) { + case Token.StringLiteral: + this.triggerAsync("String", { + line: this.line, + char: this.char, + from: this.from, + value: token.value, + quote: token.quote + }, checks, function () { return true; }); + + return create("(string)", token.value); + case Token.Identifier: + this.trigger("Identifier", { + line: this.line, + char: this.char, + from: this.form, + name: token.value, + isProperty: state.tokens.curr.id === "." + }); + + /* falls through */ + case Token.Keyword: + case Token.NullLiteral: + case Token.BooleanLiteral: + return create("(identifier)", token.value, state.tokens.curr.id === "."); + + case Token.NumericLiteral: + if (token.isMalformed) { + this.trigger("warning", { + code: "W045", + line: this.line, + character: this.char, + data: [ token.value ] + }); + } + + this.triggerAsync("warning", { + code: "W114", + line: this.line, + character: this.char, + data: [ "0x-" ] + }, checks, function () { return token.base === 16 && state.jsonMode; }); + + this.triggerAsync("warning", { + code: "W115", + line: this.line, + character: this.char + }, checks, function () { + return state.directive["use strict"] && token.base === 8; + }); + + this.trigger("Number", { + line: this.line, + char: this.char, + from: this.from, + value: token.value, + base: token.base, + isMalformed: token.malformed + }); + + return create("(number)", token.value); + + case Token.RegExp: + return create("(regexp)", token.value); + + case Token.Comment: + state.tokens.curr.comment = true; + + if (token.isSpecial) { + return { + value: token.value, + body: token.body, + type: token.commentType, + isSpecial: token.isSpecial, + line: this.line, + character: this.char, + from: this.from + }; + } + + break; + + case "": + break; + + default: + return create("(punctuator)", token.value); + } + } + } +}; + +exports.Lexer = Lexer; + +})() +},{"events":2,"./reg.js":4,"./state.js":5,"underscore":8}],10:[function(require,module,exports){ +(function(global){/*global window, global*/ +var util = require("util") +var assert = require("assert") + +var slice = Array.prototype.slice +var console +var times = {} + +if (typeof global !== "undefined" && global.console) { + console = global.console +} else if (typeof window !== "undefined" && window.console) { + console = window.console +} else { + console = window.console = {} +} + +var functions = [ + [log, "log"] + , [info, "info"] + , [warn, "warn"] + , [error, "error"] + , [time, "time"] + , [timeEnd, "timeEnd"] + , [trace, "trace"] + , [dir, "dir"] + , [assert, "assert"] +] + +for (var i = 0; i < functions.length; i++) { + var tuple = functions[i] + var f = tuple[0] + var name = tuple[1] + + if (!console[name]) { + console[name] = f + } +} + +module.exports = console + +function log() {} + +function info() { + console.log.apply(console, arguments) +} + +function warn() { + console.log.apply(console, arguments) +} + +function error() { + console.warn.apply(console, arguments) +} + +function time(label) { + times[label] = Date.now() +} + +function timeEnd(label) { + var time = times[label] + if (!time) { + throw new Error("No such label: " + label) + } + + var duration = Date.now() - time + console.log(label + ": " + duration + "ms") +} + +function trace() { + var err = new Error() + err.name = "Trace" + err.message = util.format.apply(null, arguments) + console.error(err.stack) +} + +function dir(object) { + console.log(util.inspect(object) + "\n") +} + +function assert(expression) { + if (!expression) { + var arr = slice.call(arguments, 1) + assert.ok(false, util.format.apply(null, arr)) + } +} + +})(window) +},{"util":11,"assert":12}],"jshint":[function(require,module,exports){ +module.exports=require('PeVhMp'); +},{}],"PeVhMp":[function(require,module,exports){ +(function(){/*! + * JSHint, by JSHint Community. + * + * This file (and this file only) is licensed under the same slightly modified + * MIT license that JSLint is. It stops evil-doers everywhere: + * + * Copyright (c) 2002 Douglas Crockford (www.JSLint.com) + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom + * the Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * The Software shall be used for Good, not Evil. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + */ + +/*jshint quotmark:double */ +/*global console:true */ +/*exported console */ + +var _ = require("underscore"); +var events = require("events"); +var vars = require("./vars.js"); +var messages = require("./messages.js"); +var Lexer = require("./lex.js").Lexer; +var reg = require("./reg.js"); +var state = require("./state.js").state; +var style = require("./style.js"); + +// We need this module here because environments such as IE and Rhino +// don't necessarilly expose the 'console' API and browserify uses +// it to log things. It's a sad state of affair, really. +var console = require("console-browserify"); + +// We build the application inside a function so that we produce only a singleton +// variable. That function will be invoked immediately, and its return value is +// the JSHINT function itself. + +var JSHINT = (function () { + "use strict"; + + var anonname, // The guessed name for anonymous functions. + api, // Extension API + + // These are operators that should not be used with the ! operator. + bang = { + "<" : true, + "<=" : true, + "==" : true, + "===": true, + "!==": true, + "!=" : true, + ">" : true, + ">=" : true, + "+" : true, + "-" : true, + "*" : true, + "/" : true, + "%" : true + }, + + // These are the JSHint boolean options. + boolOptions = { + asi : true, // if automatic semicolon insertion should be tolerated + bitwise : true, // if bitwise operators should not be allowed + boss : true, // if advanced usage of assignments should be allowed + browser : true, // if the standard browser globals should be predefined + camelcase : true, // if identifiers should be required in camel case + couch : true, // if CouchDB globals should be predefined + curly : true, // if curly braces around all blocks should be required + debug : true, // if debugger statements should be allowed + devel : true, // if logging globals should be predefined (console, alert, etc.) + dojo : true, // if Dojo Toolkit globals should be predefined + eqeqeq : true, // if === should be required + eqnull : true, // if == null comparisons should be tolerated + es3 : true, // if ES3 syntax should be allowed + es5 : true, // if ES5 syntax should be allowed (is now set per default) + esnext : true, // if es.next specific syntax should be allowed + moz : true, // if mozilla specific syntax should be allowed + evil : true, // if eval should be allowed + expr : true, // if ExpressionStatement should be allowed as Programs + forin : true, // if for in statements must filter + funcscope : true, // if only function scope should be used for scope tests + gcl : true, // if JSHint should be compatible with Google Closure Linter + globalstrict: true, // if global "use strict"; should be allowed (also enables 'strict') + immed : true, // if immediate invocations must be wrapped in parens + iterator : true, // if the `__iterator__` property should be allowed + jquery : true, // if jQuery globals should be predefined + lastsemic : true, // if semicolons may be ommitted for the trailing + // statements inside of a one-line blocks. + laxbreak : true, // if line breaks should not be checked + laxcomma : true, // if line breaks should not be checked around commas + loopfunc : true, // if functions should be allowed to be defined within + // loops + mootools : true, // if MooTools globals should be predefined + multistr : true, // allow multiline strings + newcap : true, // if constructor names must be capitalized + noarg : true, // if arguments.caller and arguments.callee should be + // disallowed + node : true, // if the Node.js environment globals should be + // predefined + noempty : true, // if empty blocks should be disallowed + nonew : true, // if using `new` for side-effects should be disallowed + nonstandard : true, // if non-standard (but widely adopted) globals should + // be predefined + nomen : true, // if names should be checked + onevar : true, // if only one var statement per function should be + // allowed + passfail : true, // if the scan should stop on first error + phantom : true, // if PhantomJS symbols should be allowed + plusplus : true, // if increment/decrement should not be allowed + proto : true, // if the `__proto__` property should be allowed + prototypejs : true, // if Prototype and Scriptaculous globals should be + // predefined + rhino : true, // if the Rhino environment globals should be predefined + shelljs : true, // if ShellJS globals should be predefined + typed : true, // if typed array globals should be predefined + undef : true, // if variables should be declared before used + scripturl : true, // if script-targeted URLs should be tolerated + shadow : true, // if variable shadowing should be tolerated + smarttabs : true, // if smarttabs should be tolerated + // (http://www.emacswiki.org/emacs/SmartTabs) + strict : true, // require the "use strict"; pragma + sub : true, // if all forms of subscript notation are tolerated + supernew : true, // if `new function () { ... };` and `new Object;` + // should be tolerated + trailing : true, // if trailing whitespace rules apply + validthis : true, // if 'this' inside a non-constructor function is valid. + // This is a function scoped option only. + withstmt : true, // if with statements should be allowed + white : true, // if strict whitespace rules apply + worker : true, // if Web Worker script symbols should be allowed + wsh : true, // if the Windows Scripting Host environment globals + // should be predefined + yui : true, // YUI variables should be predefined + + // Obsolete options + onecase : true, // if one case switch statements should be allowed + regexp : true, // if the . should not be allowed in regexp literals + regexdash : true // if unescaped first/last dash (-) inside brackets + // should be tolerated + }, + + // These are the JSHint options that can take any value + // (we use this object to detect invalid options) + valOptions = { + maxlen : false, + indent : false, + maxerr : false, + predef : false, + quotmark : false, //'single'|'double'|true + scope : false, + maxstatements: false, // {int} max statements per function + maxdepth : false, // {int} max nested block depth per function + maxparams : false, // {int} max params per function + maxcomplexity: false, // {int} max cyclomatic complexity per function + unused : true, // warn if variables are unused. Available options: + // false - don't check for unused variables + // true - "vars" + check last function param + // "vars" - skip checking unused function params + // "strict" - "vars" + check all function params + latedef : false // warn if the variable is used before its definition + // false - don't emit any warnings + // true - warn if any variable is used before its definition + // "nofunc" - warn for any variable but function declarations + }, + + // These are JSHint boolean options which are shared with JSLint + // where the definition in JSHint is opposite JSLint + invertedOptions = { + bitwise : true, + forin : true, + newcap : true, + nomen : true, + plusplus: true, + regexp : true, + undef : true, + white : true, + + // Inverted and renamed, use JSHint name here + eqeqeq : true, + onevar : true, + strict : true + }, + + // These are JSHint boolean options which are shared with JSLint + // where the name has been changed but the effect is unchanged + renamedOptions = { + eqeq : "eqeqeq", + vars : "onevar", + windows: "wsh", + sloppy : "strict" + }, + + declared, // Globals that were declared using /*global ... */ syntax. + exported, // Variables that are used outside of the current file. + + functionicity = [ + "closure", "exception", "global", "label", + "outer", "unused", "var" + ], + + funct, // The current function + functions, // All of the functions + + global, // The global scope + implied, // Implied globals + inblock, + indent, + lookahead, + lex, + member, + membersOnly, + noreach, + predefined, // Global variables defined by option + + scope, // The current scope + stack, + unuseds, + urls, + warnings, + + extraModules = [], + emitter = new events.EventEmitter(); + + function checkOption(name, t) { + name = name.trim(); + + if (/^[+-]W\d{3}$/g.test(name)) { + return true; + } + + if (valOptions[name] === undefined && boolOptions[name] === undefined) { + if (t.type !== "jslint") { + error("E001", t, name); + return false; + } + } + + return true; + } + + function isString(obj) { + return Object.prototype.toString.call(obj) === "[object String]"; + } + + function isIdentifier(tkn, value) { + if (!tkn) + return false; + + if (!tkn.identifier || tkn.value !== value) + return false; + + return true; + } + + function isReserved(token) { + if (!token.reserved) { + return false; + } + var meta = token.meta; + + if (meta && meta.isFutureReservedWord && state.option.inES5()) { + // ES3 FutureReservedWord in an ES5 environment. + if (!meta.es5) { + return false; + } + + // Some ES5 FutureReservedWord identifiers are active only + // within a strict mode environment. + if (meta.strictOnly) { + if (!state.option.strict && !state.directive["use strict"]) { + return false; + } + } + + if (token.isProperty) { + return false; + } + } + + return true; + } + + function supplant(str, data) { + return str.replace(/\{([^{}]*)\}/g, function (a, b) { + var r = data[b]; + return typeof r === "string" || typeof r === "number" ? r : a; + }); + } + + function combine(t, o) { + var n; + for (n in o) { + if (_.has(o, n) && !_.has(JSHINT.blacklist, n)) { + t[n] = o[n]; + } + } + } + + function updatePredefined() { + Object.keys(JSHINT.blacklist).forEach(function (key) { + delete predefined[key]; + }); + } + + function assume() { + if (state.option.es5) { + warning("I003"); + } + if (state.option.couch) { + combine(predefined, vars.couch); + } + + if (state.option.rhino) { + combine(predefined, vars.rhino); + } + + if (state.option.shelljs) { + combine(predefined, vars.shelljs); + combine(predefined, vars.node); + } + if (state.option.typed) { + combine(predefined, vars.typed); + } + + if (state.option.phantom) { + combine(predefined, vars.phantom); + } + + if (state.option.prototypejs) { + combine(predefined, vars.prototypejs); + } + + if (state.option.node) { + combine(predefined, vars.node); + combine(predefined, vars.typed); + } + + if (state.option.devel) { + combine(predefined, vars.devel); + } + + if (state.option.dojo) { + combine(predefined, vars.dojo); + } + + if (state.option.browser) { + combine(predefined, vars.browser); + combine(predefined, vars.typed); + } + + if (state.option.nonstandard) { + combine(predefined, vars.nonstandard); + } + + if (state.option.jquery) { + combine(predefined, vars.jquery); + } + + if (state.option.mootools) { + combine(predefined, vars.mootools); + } + + if (state.option.worker) { + combine(predefined, vars.worker); + } + + if (state.option.wsh) { + combine(predefined, vars.wsh); + } + + if (state.option.globalstrict && state.option.strict !== false) { + state.option.strict = true; + } + + if (state.option.yui) { + combine(predefined, vars.yui); + } + + // Let's assume that chronologically ES3 < ES5 < ES6/ESNext < Moz + + state.option.inMoz = function (strict) { + if (strict) { + return state.option.moz && !state.option.esnext; + } + return state.option.moz; + }; + + state.option.inESNext = function (strict) { + if (strict) { + return !state.option.moz && state.option.esnext; + } + return state.option.moz || state.option.esnext; + }; + + state.option.inES5 = function (/* strict */) { + return !state.option.es3; + }; + + state.option.inES3 = function (strict) { + if (strict) { + return !state.option.moz && !state.option.esnext && state.option.es3; + } + return state.option.es3; + }; + } + + // Produce an error warning. + function quit(code, line, chr) { + var percentage = Math.floor((line / state.lines.length) * 100); + var message = messages.errors[code].desc; + + throw { + name: "JSHintError", + line: line, + character: chr, + message: message + " (" + percentage + "% scanned).", + raw: message, + code: code + }; + } + + function isundef(scope, code, token, a) { + return JSHINT.undefs.push([scope, code, token, a]); + } + + function warning(code, t, a, b, c, d) { + var ch, l, w, msg; + + if (/^W\d{3}$/.test(code)) { + if (state.ignored[code]) + return; + + msg = messages.warnings[code]; + } else if (/E\d{3}/.test(code)) { + msg = messages.errors[code]; + } else if (/I\d{3}/.test(code)) { + msg = messages.info[code]; + } + + t = t || state.tokens.next; + if (t.id === "(end)") { // `~ + t = state.tokens.curr; + } + + l = t.line || 0; + ch = t.from || 0; + + w = { + id: "(error)", + raw: msg.desc, + code: msg.code, + evidence: state.lines[l - 1] || "", + line: l, + character: ch, + scope: JSHINT.scope, + a: a, + b: b, + c: c, + d: d + }; + + w.reason = supplant(msg.desc, w); + JSHINT.errors.push(w); + + if (state.option.passfail) { + quit("E042", l, ch); + } + + warnings += 1; + if (warnings >= state.option.maxerr) { + quit("E043", l, ch); + } + + return w; + } + + function warningAt(m, l, ch, a, b, c, d) { + return warning(m, { + line: l, + from: ch + }, a, b, c, d); + } + + function error(m, t, a, b, c, d) { + warning(m, t, a, b, c, d); + } + + function errorAt(m, l, ch, a, b, c, d) { + return error(m, { + line: l, + from: ch + }, a, b, c, d); + } + + // Tracking of "internal" scripts, like eval containing a static string + function addInternalSrc(elem, src) { + var i; + i = { + id: "(internal)", + elem: elem, + value: src + }; + JSHINT.internals.push(i); + return i; + } + + function addlabel(t, type, tkn, islet) { + // Define t in the current function in the current scope. + if (type === "exception") { + if (_.has(funct["(context)"], t)) { + if (funct[t] !== true && !state.option.node) { + warning("W002", state.tokens.next, t); + } + } + } + + if (_.has(funct, t) && !funct["(global)"]) { + if (funct[t] === true) { + if (state.option.latedef) { + if ((state.option.latedef === true && _.contains([funct[t], type], "unction")) || + !_.contains([funct[t], type], "unction")) { + warning("W003", state.tokens.next, t); + } + } + } else { + if (!state.option.shadow && type !== "exception" || + (funct["(blockscope)"].getlabel(t))) { + warning("W004", state.tokens.next, t); + } + } + } + + // a double definition of a let variable in same block throws a TypeError + if (funct["(blockscope)"] && funct["(blockscope)"].current.has(t)) { + error("E044", state.tokens.next, t); + } + + // if the identifier is from a let, adds it only to the current blockscope + if (islet) { + funct["(blockscope)"].current.add(t, type, state.tokens.curr); + } else { + + funct[t] = type; + + if (tkn) { + funct["(tokens)"][t] = tkn; + } + + if (funct["(global)"]) { + global[t] = funct; + if (_.has(implied, t)) { + if (state.option.latedef) { + if ((state.option.latedef === true && _.contains([funct[t], type], "unction")) || + !_.contains([funct[t], type], "unction")) { + warning("W003", state.tokens.next, t); + } + } + + delete implied[t]; + } + } else { + scope[t] = funct; + } + } + } + + function doOption() { + var nt = state.tokens.next; + var body = nt.body.split(",").map(function (s) { return s.trim(); }); + var predef = {}; + + if (nt.type === "globals") { + body.forEach(function (g) { + g = g.split(":"); + var key = (g[0] || "").trim(); + var val = (g[1] || "").trim(); + + if (key.charAt(0) === "-") { + key = key.slice(1); + val = false; + + JSHINT.blacklist[key] = key; + updatePredefined(); + } else { + predef[key] = (val === "true"); + } + }); + + combine(predefined, predef); + + for (var key in predef) { + if (_.has(predef, key)) { + declared[key] = nt; + } + } + } + + if (nt.type === "exported") { + body.forEach(function (e) { + exported[e] = true; + }); + } + + if (nt.type === "members") { + membersOnly = membersOnly || {}; + + body.forEach(function (m) { + var ch1 = m.charAt(0); + var ch2 = m.charAt(m.length - 1); + + if (ch1 === ch2 && (ch1 === "\"" || ch1 === "'")) { + m = m + .substr(1, m.length - 2) + .replace("\\b", "\b") + .replace("\\t", "\t") + .replace("\\n", "\n") + .replace("\\v", "\v") + .replace("\\f", "\f") + .replace("\\r", "\r") + .replace("\\\\", "\\") + .replace("\\\"", "\""); + } + + membersOnly[m] = false; + }); + } + + var numvals = [ + "maxstatements", + "maxparams", + "maxdepth", + "maxcomplexity", + "maxerr", + "maxlen", + "indent" + ]; + + if (nt.type === "jshint" || nt.type === "jslint") { + body.forEach(function (g) { + g = g.split(":"); + var key = (g[0] || "").trim(); + var val = (g[1] || "").trim(); + + if (!checkOption(key, nt)) { + return; + } + + if (numvals.indexOf(key) >= 0) { + + // GH988 - numeric options can be disabled by setting them to `false` + if (val !== "false") { + val = +val; + + if (typeof val !== "number" || !isFinite(val) || val <= 0 || Math.floor(val) !== val) { + error("E032", nt, g[1].trim()); + return; + } + + if (key === "indent") { + state.option["(explicitIndent)"] = true; + } + state.option[key] = val; + } else { + if (key === "indent") { + state.option["(explicitIndent)"] = false; + } else { + state.option[key] = false; + } + } + + return; + } + + if (key === "validthis") { + // `validthis` is valid only within a function scope. + if (funct["(global)"]) { + error("E009"); + } else { + if (val === "true" || val === "false") { + state.option.validthis = (val === "true"); + } else { + error("E002", nt); + } + } + return; + } + + if (key === "quotmark") { + switch (val) { + case "true": + case "false": + state.option.quotmark = (val === "true"); + break; + case "double": + case "single": + state.option.quotmark = val; + break; + default: + error("E002", nt); + } + return; + } + + if (key === "unused") { + switch (val) { + case "true": + state.option.unused = true; + break; + case "false": + state.option.unused = false; + break; + case "vars": + case "strict": + state.option.unused = val; + break; + default: + error("E002", nt); + } + return; + } + + if (key === "latedef") { + switch (val) { + case "true": + state.option.latedef = true; + break; + case "false": + state.option.latedef = false; + break; + case "nofunc": + state.option.latedef = "nofunc"; + break; + default: + error("E002", nt); + } + return; + } + + var match = /^([+-])(W\d{3})$/g.exec(key); + if (match) { + // ignore for -W..., unignore for +W... + state.ignored[match[2]] = (match[1] === "-"); + return; + } + + var tn; + if (val === "true" || val === "false") { + if (nt.type === "jslint") { + tn = renamedOptions[key] || key; + state.option[tn] = (val === "true"); + + if (invertedOptions[tn] !== undefined) { + state.option[tn] = !state.option[tn]; + } + } else { + state.option[key] = (val === "true"); + } + + if (key === "newcap") { + state.option["(explicitNewcap)"] = true; + } + return; + } + + error("E002", nt); + }); + + assume(); + } + } + + // We need a peek function. If it has an argument, it peeks that much farther + // ahead. It is used to distinguish + // for ( var i in ... + // from + // for ( var i = ... + + function peek(p) { + var i = p || 0, j = 0, t; + + while (j <= i) { + t = lookahead[j]; + if (!t) { + t = lookahead[j] = lex.token(); + } + j += 1; + } + return t; + } + + // Produce the next token. It looks for programming errors. + + function advance(id, t) { + switch (state.tokens.curr.id) { + case "(number)": + if (state.tokens.next.id === ".") { + warning("W005", state.tokens.curr); + } + break; + case "-": + if (state.tokens.next.id === "-" || state.tokens.next.id === "--") { + warning("W006"); + } + break; + case "+": + if (state.tokens.next.id === "+" || state.tokens.next.id === "++") { + warning("W007"); + } + break; + } + + if (state.tokens.curr.type === "(string)" || state.tokens.curr.identifier) { + anonname = state.tokens.curr.value; + } + + if (id && state.tokens.next.id !== id) { + if (t) { + if (state.tokens.next.id === "(end)") { + error("E019", t, t.id); + } else { + error("E020", state.tokens.next, id, t.id, t.line, state.tokens.next.value); + } + } else if (state.tokens.next.type !== "(identifier)" || state.tokens.next.value !== id) { + warning("W116", state.tokens.next, id, state.tokens.next.value); + } + } + + state.tokens.prev = state.tokens.curr; + state.tokens.curr = state.tokens.next; + for (;;) { + state.tokens.next = lookahead.shift() || lex.token(); + + if (!state.tokens.next) { // No more tokens left, give up + quit("E041", state.tokens.curr.line); + } + + if (state.tokens.next.id === "(end)" || state.tokens.next.id === "(error)") { + return; + } + + if (state.tokens.next.check) { + state.tokens.next.check(); + } + + if (state.tokens.next.isSpecial) { + doOption(); + } else { + if (state.tokens.next.id !== "(endline)") { + break; + } + } + } + } + + function isInfix(token) { + return token.infix || (!token.identifier && !!token.led); + } + + function isEndOfExpr() { + var curr = state.tokens.curr; + var next = state.tokens.next; + if (next.id === ";" || next.id === "}" || next.id === ":") { + return true; + } + if (isInfix(next) === isInfix(curr) || (curr.id === "yield" && state.option.inMoz(true))) { + return curr.line !== next.line; + } + return false; + } + + // This is the heart of JSHINT, the Pratt parser. In addition to parsing, it + // is looking for ad hoc lint patterns. We add .fud to Pratt's model, which is + // like .nud except that it is only used on the first token of a statement. + // Having .fud makes it much easier to define statement-oriented languages like + // JavaScript. I retained Pratt's nomenclature. + + // .nud Null denotation + // .fud First null denotation + // .led Left denotation + // lbp Left binding power + // rbp Right binding power + + // They are elements of the parsing method called Top Down Operator Precedence. + + function expression(rbp, initial) { + var left, isArray = false, isObject = false, isLetExpr = false; + + // if current expression is a let expression + if (!initial && state.tokens.next.value === "let" && peek(0).value === "(") { + if (!state.option.inMoz(true)) { + warning("W118", state.tokens.next, "let expressions"); + } + isLetExpr = true; + // create a new block scope we use only for the current expression + funct["(blockscope)"].stack(); + advance("let"); + advance("("); + state.syntax["let"].fud.call(state.syntax["let"].fud, false); + advance(")"); + } + + if (state.tokens.next.id === "(end)") + error("E006", state.tokens.curr); + + advance(); + + if (initial) { + anonname = "anonymous"; + funct["(verb)"] = state.tokens.curr.value; + } + + if (initial === true && state.tokens.curr.fud) { + left = state.tokens.curr.fud(); + } else { + if (state.tokens.curr.nud) { + left = state.tokens.curr.nud(); + } else { + error("E030", state.tokens.curr, state.tokens.curr.id); + } + + while (rbp < state.tokens.next.lbp && !isEndOfExpr()) { + isArray = state.tokens.curr.value === "Array"; + isObject = state.tokens.curr.value === "Object"; + + // #527, new Foo.Array(), Foo.Array(), new Foo.Object(), Foo.Object() + // Line breaks in IfStatement heads exist to satisfy the checkJSHint + // "Line too long." error. + if (left && (left.value || (left.first && left.first.value))) { + // If the left.value is not "new", or the left.first.value is a "." + // then safely assume that this is not "new Array()" and possibly + // not "new Object()"... + if (left.value !== "new" || + (left.first && left.first.value && left.first.value === ".")) { + isArray = false; + // ...In the case of Object, if the left.value and state.tokens.curr.value + // are not equal, then safely assume that this not "new Object()" + if (left.value !== state.tokens.curr.value) { + isObject = false; + } + } + } + + advance(); + + if (isArray && state.tokens.curr.id === "(" && state.tokens.next.id === ")") { + warning("W009", state.tokens.curr); + } + + if (isObject && state.tokens.curr.id === "(" && state.tokens.next.id === ")") { + warning("W010", state.tokens.curr); + } + + if (left && state.tokens.curr.led) { + left = state.tokens.curr.led(left); + } else { + error("E033", state.tokens.curr, state.tokens.curr.id); + } + } + } + if (isLetExpr) { + funct["(blockscope)"].unstack(); + } + return left; + } + + +// Functions for conformance of style. + + function adjacent(left, right) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + if (state.option.white) { + if (left.character !== right.from && left.line === right.line) { + left.from += (left.character - left.from); + warning("W011", left, left.value); + } + } + } + + function nobreak(left, right) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + if (state.option.white && (left.character !== right.from || left.line !== right.line)) { + warning("W012", right, right.value); + } + } + + function nospace(left, right) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + if (state.option.white && !left.comment) { + if (left.line === right.line) { + adjacent(left, right); + } + } + } + + function nonadjacent(left, right) { + if (state.option.white) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + + if (left.value === ";" && right.value === ";") { + return; + } + + if (left.line === right.line && left.character === right.from) { + left.from += (left.character - left.from); + warning("W013", left, left.value); + } + } + } + + function nobreaknonadjacent(left, right) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + if (!state.option.laxbreak && left.line !== right.line) { + warning("W014", right, right.value); + } else if (state.option.white) { + left = left || state.tokens.curr; + right = right || state.tokens.next; + if (left.character === right.from) { + left.from += (left.character - left.from); + warning("W013", left, left.value); + } + } + } + + function indentation(bias) { + if (!state.option.white && !state.option["(explicitIndent)"]) { + return; + } + + if (state.tokens.next.id === "(end)") { + return; + } + + var i = indent + (bias || 0); + if (state.tokens.next.from !== i) { + warning("W015", state.tokens.next, state.tokens.next.value, i, state.tokens.next.from); + } + } + + function nolinebreak(t) { + t = t || state.tokens.curr; + if (t.line !== state.tokens.next.line) { + warning("E022", t, t.value); + } + } + + function nobreakcomma(left, right) { + if (left.line !== right.line) { + if (!state.option.laxcomma) { + if (comma.first) { + warning("I001"); + comma.first = false; + } + warning("W014", left, right.value); + } + } else if (!left.comment && left.character !== right.from && state.option.white) { + left.from += (left.character - left.from); + warning("W011", left, left.value); + } + } + + function comma(opts) { + opts = opts || {}; + + if (!opts.peek) { + nobreakcomma(state.tokens.curr, state.tokens.next); + advance(","); + } else { + nobreakcomma(state.tokens.prev, state.tokens.curr); + } + + // TODO: This is a temporary solution to fight against false-positives in + // arrays and objects with trailing commas (see GH-363). The best solution + // would be to extract all whitespace rules out of parser. + + if (state.tokens.next.value !== "]" && state.tokens.next.value !== "}") { + nonadjacent(state.tokens.curr, state.tokens.next); + } + + if (state.tokens.next.identifier && !(opts.property && state.option.inES5())) { + // Keywords that cannot follow a comma operator. + switch (state.tokens.next.value) { + case "break": + case "case": + case "catch": + case "continue": + case "default": + case "do": + case "else": + case "finally": + case "for": + case "if": + case "in": + case "instanceof": + case "return": + case "switch": + case "throw": + case "try": + case "var": + case "let": + case "while": + case "with": + error("E024", state.tokens.next, state.tokens.next.value); + return false; + } + } + + if (state.tokens.next.type === "(punctuator)") { + switch (state.tokens.next.value) { + case "}": + case "]": + case ",": + if (opts.allowTrailing) { + return true; + } + + /* falls through */ + case ")": + error("E024", state.tokens.next, state.tokens.next.value); + return false; + } + } + return true; + } + + // Functional constructors for making the symbols that will be inherited by + // tokens. + + function symbol(s, p) { + var x = state.syntax[s]; + if (!x || typeof x !== "object") { + state.syntax[s] = x = { + id: s, + lbp: p, + value: s + }; + } + return x; + } + + function delim(s) { + return symbol(s, 0); + } + + function stmt(s, f) { + var x = delim(s); + x.identifier = x.reserved = true; + x.fud = f; + return x; + } + + function blockstmt(s, f) { + var x = stmt(s, f); + x.block = true; + return x; + } + + function reserveName(x) { + var c = x.id.charAt(0); + if ((c >= "a" && c <= "z") || (c >= "A" && c <= "Z")) { + x.identifier = x.reserved = true; + } + return x; + } + + function prefix(s, f) { + var x = symbol(s, 150); + reserveName(x); + x.nud = (typeof f === "function") ? f : function () { + this.right = expression(150); + this.arity = "unary"; + if (this.id === "++" || this.id === "--") { + if (state.option.plusplus) { + warning("W016", this, this.id); + } else if ((!this.right.identifier || isReserved(this.right)) && + this.right.id !== "." && this.right.id !== "[") { + warning("W017", this); + } + } + return this; + }; + return x; + } + + function type(s, f) { + var x = delim(s); + x.type = s; + x.nud = f; + return x; + } + + function reserve(name, func) { + var x = type(name, func); + x.identifier = true; + x.reserved = true; + return x; + } + + function FutureReservedWord(name, meta) { + var x = type(name, (meta && meta.nud) || function () { + return this; + }); + + meta = meta || {}; + meta.isFutureReservedWord = true; + + x.value = name; + x.identifier = true; + x.reserved = true; + x.meta = meta; + + return x; + } + + function reservevar(s, v) { + return reserve(s, function () { + if (typeof v === "function") { + v(this); + } + return this; + }); + } + + function infix(s, f, p, w) { + var x = symbol(s, p); + reserveName(x); + x.infix = true; + x.led = function (left) { + if (!w) { + nobreaknonadjacent(state.tokens.prev, state.tokens.curr); + nonadjacent(state.tokens.curr, state.tokens.next); + } + if (s === "in" && left.id === "!") { + warning("W018", left, "!"); + } + if (typeof f === "function") { + return f(left, this); + } else { + this.left = left; + this.right = expression(p); + return this; + } + }; + return x; + } + + + function application(s) { + var x = symbol(s, 42); + + x.led = function (left) { + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "arrow function syntax (=>)"); + } + + nobreaknonadjacent(state.tokens.prev, state.tokens.curr); + nonadjacent(state.tokens.curr, state.tokens.next); + + this.left = left; + this.right = doFunction(undefined, undefined, false, left); + return this; + }; + return x; + } + + function relation(s, f) { + var x = symbol(s, 100); + + x.led = function (left) { + nobreaknonadjacent(state.tokens.prev, state.tokens.curr); + nonadjacent(state.tokens.curr, state.tokens.next); + var right = expression(100); + + if (isIdentifier(left, "NaN") || isIdentifier(right, "NaN")) { + warning("W019", this); + } else if (f) { + f.apply(this, [left, right]); + } + + if (!left || !right) { + quit("E041", state.tokens.curr.line); + } + + if (left.id === "!") { + warning("W018", left, "!"); + } + + if (right.id === "!") { + warning("W018", right, "!"); + } + + this.left = left; + this.right = right; + return this; + }; + return x; + } + + function isPoorRelation(node) { + return node && + ((node.type === "(number)" && +node.value === 0) || + (node.type === "(string)" && node.value === "") || + (node.type === "null" && !state.option.eqnull) || + node.type === "true" || + node.type === "false" || + node.type === "undefined"); + } + + function assignop(s, f, p) { + var x = infix(s, typeof f === "function" ? f : function (left, that) { + that.left = left; + + if (left) { + if (predefined[left.value] === false && + scope[left.value]["(global)"] === true) { + warning("W020", left); + } else if (left["function"]) { + warning("W021", left, left.value); + } + + if (funct[left.value] === "const") { + error("E013", left, left.value); + } + + if (left.id === ".") { + if (!left.left) { + warning("E031", that); + } else if (left.left.value === "arguments" && !state.directive["use strict"]) { + warning("E031", that); + } + + that.right = expression(10); + return that; + } else if (left.id === "[") { + if (state.tokens.curr.left.first) { + state.tokens.curr.left.first.forEach(function (t) { + if (funct[t.value] === "const") { + error("E013", t, t.value); + } + }); + } else if (!left.left) { + warning("E031", that); + } else if (left.left.value === "arguments" && !state.directive["use strict"]) { + warning("E031", that); + } + that.right = expression(10); + return that; + } else if (left.identifier && !isReserved(left)) { + if (funct[left.value] === "exception") { + warning("W022", left); + } + that.right = expression(10); + return that; + } + + if (left === state.syntax["function"]) { + warning("W023", state.tokens.curr); + } + } + + error("E031", that); + }, p); + + x.exps = true; + x.assign = true; + return x; + } + + + function bitwise(s, f, p) { + var x = symbol(s, p); + reserveName(x); + x.led = (typeof f === "function") ? f : function (left) { + if (state.option.bitwise) { + warning("W016", this, this.id); + } + this.left = left; + this.right = expression(p); + return this; + }; + return x; + } + + + function bitwiseassignop(s) { + return assignop(s, function (left, that) { + if (state.option.bitwise) { + warning("W016", that, that.id); + } + nonadjacent(state.tokens.prev, state.tokens.curr); + nonadjacent(state.tokens.curr, state.tokens.next); + if (left) { + if (left.id === "." || left.id === "[" || + (left.identifier && !isReserved(left))) { + expression(10); + return that; + } + if (left === state.syntax["function"]) { + warning("W023", state.tokens.curr); + } + return that; + } + error("E031", that); + }, 20); + } + + + function suffix(s) { + var x = symbol(s, 150); + + x.led = function (left) { + if (state.option.plusplus) { + warning("W016", this, this.id); + } else if ((!left.identifier || isReserved(left)) && left.id !== "." && left.id !== "[") { + warning("W017", this); + } + + this.left = left; + return this; + }; + return x; + } + + // fnparam means that this identifier is being defined as a function + // argument (see identifier()) + // prop means that this identifier is that of an object property + + function optionalidentifier(fnparam, prop) { + if (!state.tokens.next.identifier) { + return; + } + + advance(); + + var curr = state.tokens.curr; + var val = state.tokens.curr.value; + + if (!isReserved(curr)) { + return val; + } + + if (prop) { + if (state.option.inES5()) { + return val; + } + } + + if (fnparam && val === "undefined") { + return val; + } + + // Display an info message about reserved words as properties + // and ES5 but do it only once. + if (prop && !api.getCache("displayed:I002")) { + api.setCache("displayed:I002", true); + warning("I002"); + } + + warning("W024", state.tokens.curr, state.tokens.curr.id); + return val; + } + + // fnparam means that this identifier is being defined as a function + // argument + // prop means that this identifier is that of an object property + function identifier(fnparam, prop) { + var i = optionalidentifier(fnparam, prop); + if (i) { + return i; + } + if (state.tokens.curr.id === "function" && state.tokens.next.id === "(") { + warning("W025"); + } else { + error("E030", state.tokens.next, state.tokens.next.value); + } + } + + + function reachable(s) { + var i = 0, t; + if (state.tokens.next.id !== ";" || noreach) { + return; + } + for (;;) { + t = peek(i); + if (t.reach) { + return; + } + if (t.id !== "(endline)") { + if (t.id === "function") { + if (!state.option.latedef) { + break; + } + + warning("W026", t); + break; + } + + warning("W027", t, t.value, s); + break; + } + i += 1; + } + } + + + function statement(noindent) { + var values; + var i = indent, r, s = scope, t = state.tokens.next; + + if (t.id === ";") { + advance(";"); + return; + } + + // Is this a labelled statement? + var res = isReserved(t); + + // We're being more tolerant here: if someone uses + // a FutureReservedWord as a label, we warn but proceed + // anyway. + + if (res && t.meta && t.meta.isFutureReservedWord && peek().id === ":") { + warning("W024", t, t.id); + res = false; + } + + // detect a destructuring assignment + if (_.has(["[", "{"], t.value)) { + if (lookupBlockType().isDestAssign) { + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "destructuring expression"); + } + values = destructuringExpression(); + values.forEach(function (tok) { + isundef(funct, "W117", tok.token, tok.id); + }); + advance("="); + destructuringExpressionMatch(values, expression(10, true)); + advance(";"); + return; + } + } + if (t.identifier && !res && peek().id === ":") { + advance(); + advance(":"); + scope = Object.create(s); + addlabel(t.value, "label"); + + if (!state.tokens.next.labelled && state.tokens.next.value !== "{") { + warning("W028", state.tokens.next, t.value, state.tokens.next.value); + } + + state.tokens.next.label = t.value; + t = state.tokens.next; + } + + // Is it a lonely block? + + if (t.id === "{") { + block(true, true); + return; + } + + // Parse the statement. + + if (!noindent) { + indentation(); + } + r = expression(0, true); + + // Look for the final semicolon. + + if (!t.block) { + if (!state.option.expr && (!r || !r.exps)) { + warning("W030", state.tokens.curr); + } else if (state.option.nonew && r && r.left && r.id === "(" && r.left.id === "new") { + warning("W031", t); + } + + if (state.tokens.next.id !== ";") { + if (!state.option.asi) { + // If this is the last statement in a block that ends on + // the same line *and* option lastsemic is on, ignore the warning. + // Otherwise, complain about missing semicolon. + if (!state.option.lastsemic || state.tokens.next.id !== "}" || + state.tokens.next.line !== state.tokens.curr.line) { + warningAt("W033", state.tokens.curr.line, state.tokens.curr.character); + } + } + } else { + adjacent(state.tokens.curr, state.tokens.next); + advance(";"); + nonadjacent(state.tokens.curr, state.tokens.next); + } + } + + // Restore the indentation. + + indent = i; + scope = s; + return r; + } + + + function statements(startLine) { + var a = [], p; + + while (!state.tokens.next.reach && state.tokens.next.id !== "(end)") { + if (state.tokens.next.id === ";") { + p = peek(); + + if (!p || (p.id !== "(" && p.id !== "[")) { + warning("W032"); + } + + advance(";"); + } else { + a.push(statement(startLine === state.tokens.next.line)); + } + } + return a; + } + + + /* + * read all directives + * recognizes a simple form of asi, but always + * warns, if it is used + */ + function directives() { + var i, p, pn; + + for (;;) { + if (state.tokens.next.id === "(string)") { + p = peek(0); + if (p.id === "(endline)") { + i = 1; + do { + pn = peek(i); + i = i + 1; + } while (pn.id === "(endline)"); + + if (pn.id !== ";") { + if (pn.id !== "(string)" && pn.id !== "(number)" && + pn.id !== "(regexp)" && pn.identifier !== true && + pn.id !== "}") { + break; + } + warning("W033", state.tokens.next); + } else { + p = pn; + } + } else if (p.id === "}") { + // Directive with no other statements, warn about missing semicolon + warning("W033", p); + } else if (p.id !== ";") { + break; + } + + indentation(); + advance(); + if (state.directive[state.tokens.curr.value]) { + warning("W034", state.tokens.curr, state.tokens.curr.value); + } + + if (state.tokens.curr.value === "use strict") { + if (!state.option["(explicitNewcap)"]) + state.option.newcap = true; + state.option.undef = true; + } + + // there's no directive negation, so always set to true + state.directive[state.tokens.curr.value] = true; + + if (p.id === ";") { + advance(";"); + } + continue; + } + break; + } + } + + + /* + * Parses a single block. A block is a sequence of statements wrapped in + * braces. + * + * ordinary - true for everything but function bodies and try blocks. + * stmt - true if block can be a single statement (e.g. in if/for/while). + * isfunc - true if block is a function body + */ + function block(ordinary, stmt, isfunc, isfatarrow) { + var a, + b = inblock, + old_indent = indent, + m, + s = scope, + t, + line, + d; + + inblock = ordinary; + + if (!ordinary || !state.option.funcscope) + scope = Object.create(scope); + + nonadjacent(state.tokens.curr, state.tokens.next); + t = state.tokens.next; + + var metrics = funct["(metrics)"]; + metrics.nestedBlockDepth += 1; + metrics.verifyMaxNestedBlockDepthPerFunction(); + + if (state.tokens.next.id === "{") { + advance("{"); + + // create a new block scope + funct["(blockscope)"].stack(); + + line = state.tokens.curr.line; + if (state.tokens.next.id !== "}") { + indent += state.option.indent; + while (!ordinary && state.tokens.next.from > indent) { + indent += state.option.indent; + } + + if (isfunc) { + m = {}; + for (d in state.directive) { + if (_.has(state.directive, d)) { + m[d] = state.directive[d]; + } + } + directives(); + + if (state.option.strict && funct["(context)"]["(global)"]) { + if (!m["use strict"] && !state.directive["use strict"]) { + warning("E007"); + } + } + } + + a = statements(line); + + metrics.statementCount += a.length; + + if (isfunc) { + state.directive = m; + } + + indent -= state.option.indent; + if (line !== state.tokens.next.line) { + indentation(); + } + } else if (line !== state.tokens.next.line) { + indentation(); + } + advance("}", t); + + funct["(blockscope)"].unstack(); + + indent = old_indent; + } else if (!ordinary) { + if (isfunc) { + m = {}; + if (stmt && !isfatarrow && !state.option.inMoz(true)) { + error("W118", state.tokens.curr, "function closure expressions"); + } + + if (!stmt) { + for (d in state.directive) { + if (_.has(state.directive, d)) { + m[d] = state.directive[d]; + } + } + } + expression(10); + + if (state.option.strict && funct["(context)"]["(global)"]) { + if (!m["use strict"] && !state.directive["use strict"]) { + warning("E007"); + } + } + } else { + error("E021", state.tokens.next, "{", state.tokens.next.value); + } + } else { + + // check to avoid let declaration not within a block + funct["(nolet)"] = true; + + if (!stmt || state.option.curly) { + warning("W116", state.tokens.next, "{", state.tokens.next.value); + } + + noreach = true; + indent += state.option.indent; + // test indentation only if statement is in new line + a = [statement(state.tokens.next.line === state.tokens.curr.line)]; + indent -= state.option.indent; + noreach = false; + + delete funct["(nolet)"]; + } + funct["(verb)"] = null; + if (!ordinary || !state.option.funcscope) scope = s; + inblock = b; + if (ordinary && state.option.noempty && (!a || a.length === 0)) { + warning("W035"); + } + metrics.nestedBlockDepth -= 1; + return a; + } + + + function countMember(m) { + if (membersOnly && typeof membersOnly[m] !== "boolean") { + warning("W036", state.tokens.curr, m); + } + if (typeof member[m] === "number") { + member[m] += 1; + } else { + member[m] = 1; + } + } + + + function note_implied(tkn) { + var name = tkn.value, line = tkn.line, a = implied[name]; + if (typeof a === "function") { + a = false; + } + + if (!a) { + a = [line]; + implied[name] = a; + } else if (a[a.length - 1] !== line) { + a.push(line); + } + } + + + // Build the syntax table by declaring the syntactic elements of the language. + + type("(number)", function () { + return this; + }); + + type("(string)", function () { + return this; + }); + + state.syntax["(identifier)"] = { + type: "(identifier)", + lbp: 0, + identifier: true, + nud: function () { + var v = this.value, + s = scope[v], + f; + + if (typeof s === "function") { + // Protection against accidental inheritance. + s = undefined; + } else if (typeof s === "boolean") { + f = funct; + funct = functions[0]; + addlabel(v, "var"); + s = funct; + funct = f; + } + var block; + if (_.has(funct, "(blockscope)")) { + block = funct["(blockscope)"].getlabel(v); + } + + // The name is in scope and defined in the current function. + if (funct === s || block) { + // Change 'unused' to 'var', and reject labels. + // the name is in a block scope + switch (block ? block[v]["(type)"] : funct[v]) { + case "unused": + if (block) block[v]["(type)"] = "var"; + else funct[v] = "var"; + break; + case "unction": + if (block) block[v]["(type)"] = "function"; + else funct[v] = "function"; + this["function"] = true; + break; + case "function": + this["function"] = true; + break; + case "label": + warning("W037", state.tokens.curr, v); + break; + } + } else if (funct["(global)"]) { + // The name is not defined in the function. If we are in the global + // scope, then we have an undefined variable. + // + // Operators typeof and delete do not raise runtime errors even if + // the base object of a reference is null so no need to display warning + // if we're inside of typeof or delete. + + if (typeof predefined[v] !== "boolean") { + // Attempting to subscript a null reference will throw an + // error, even within the typeof and delete operators + if (!(anonname === "typeof" || anonname === "delete") || + (state.tokens.next && (state.tokens.next.value === "." || + state.tokens.next.value === "["))) { + + // if we're in a list comprehension, variables are declared + // locally and used before being defined. So we check + // the presence of the given variable in the comp array + // before declaring it undefined. + + if (!funct["(comparray)"].check(v)) { + isundef(funct, "W117", state.tokens.curr, v); + } + } + } + + note_implied(state.tokens.curr); + } else { + // If the name is already defined in the current + // function, but not as outer, then there is a scope error. + + switch (funct[v]) { + case "closure": + case "function": + case "var": + case "unused": + warning("W038", state.tokens.curr, v); + break; + case "label": + warning("W037", state.tokens.curr, v); + break; + case "outer": + case "global": + break; + default: + // If the name is defined in an outer function, make an outer entry, + // and if it was unused, make it var. + if (s === true) { + funct[v] = true; + } else if (s === null) { + warning("W039", state.tokens.curr, v); + note_implied(state.tokens.curr); + } else if (typeof s !== "object") { + // Operators typeof and delete do not raise runtime errors even + // if the base object of a reference is null so no need to + // + // display warning if we're inside of typeof or delete. + // Attempting to subscript a null reference will throw an + // error, even within the typeof and delete operators + if (!(anonname === "typeof" || anonname === "delete") || + (state.tokens.next && + (state.tokens.next.value === "." || state.tokens.next.value === "["))) { + + isundef(funct, "W117", state.tokens.curr, v); + } + funct[v] = true; + note_implied(state.tokens.curr); + } else { + switch (s[v]) { + case "function": + case "unction": + this["function"] = true; + s[v] = "closure"; + funct[v] = s["(global)"] ? "global" : "outer"; + break; + case "var": + case "unused": + s[v] = "closure"; + funct[v] = s["(global)"] ? "global" : "outer"; + break; + case "closure": + funct[v] = s["(global)"] ? "global" : "outer"; + break; + case "label": + warning("W037", state.tokens.curr, v); + } + } + } + } + return this; + }, + led: function () { + error("E033", state.tokens.next, state.tokens.next.value); + } + }; + + type("(regexp)", function () { + return this; + }); + + // ECMAScript parser + + delim("(endline)"); + delim("(begin)"); + delim("(end)").reach = true; + delim("(error)").reach = true; + delim("}").reach = true; + delim(")"); + delim("]"); + delim("\"").reach = true; + delim("'").reach = true; + delim(";"); + delim(":").reach = true; + delim("#"); + + reserve("else"); + reserve("case").reach = true; + reserve("catch"); + reserve("default").reach = true; + reserve("finally"); + reservevar("arguments", function (x) { + if (state.directive["use strict"] && funct["(global)"]) { + warning("E008", x); + } + }); + reservevar("eval"); + reservevar("false"); + reservevar("Infinity"); + reservevar("null"); + reservevar("this", function (x) { + if (state.directive["use strict"] && !state.option.validthis && ((funct["(statement)"] && + funct["(name)"].charAt(0) > "Z") || funct["(global)"])) { + warning("W040", x); + } + }); + reservevar("true"); + reservevar("undefined"); + + assignop("=", "assign", 20); + assignop("+=", "assignadd", 20); + assignop("-=", "assignsub", 20); + assignop("*=", "assignmult", 20); + assignop("/=", "assigndiv", 20).nud = function () { + error("E014"); + }; + assignop("%=", "assignmod", 20); + + bitwiseassignop("&=", "assignbitand", 20); + bitwiseassignop("|=", "assignbitor", 20); + bitwiseassignop("^=", "assignbitxor", 20); + bitwiseassignop("<<=", "assignshiftleft", 20); + bitwiseassignop(">>=", "assignshiftright", 20); + bitwiseassignop(">>>=", "assignshiftrightunsigned", 20); + infix(",", function (left, that) { + var expr; + that.exprs = [left]; + if (!comma({peek: true})) { + return that; + } + while (true) { + if (!(expr = expression(10))) { + break; + } + that.exprs.push(expr); + if (state.tokens.next.value !== "," || !comma()) { + break; + } + } + return that; + }, 10, true); + + infix("?", function (left, that) { + increaseComplexityCount(); + that.left = left; + that.right = expression(10); + advance(":"); + that["else"] = expression(10); + return that; + }, 30); + + var orPrecendence = 40; + infix("||", function (left, that) { + increaseComplexityCount(); + that.left = left; + that.right = expression(orPrecendence); + return that; + }, orPrecendence); + infix("&&", "and", 50); + bitwise("|", "bitor", 70); + bitwise("^", "bitxor", 80); + bitwise("&", "bitand", 90); + relation("==", function (left, right) { + var eqnull = state.option.eqnull && (left.value === "null" || right.value === "null"); + + if (!eqnull && state.option.eqeqeq) + warning("W116", this, "===", "=="); + else if (isPoorRelation(left)) + warning("W041", this, "===", left.value); + else if (isPoorRelation(right)) + warning("W041", this, "===", right.value); + + return this; + }); + relation("==="); + relation("!=", function (left, right) { + var eqnull = state.option.eqnull && + (left.value === "null" || right.value === "null"); + + if (!eqnull && state.option.eqeqeq) { + warning("W116", this, "!==", "!="); + } else if (isPoorRelation(left)) { + warning("W041", this, "!==", left.value); + } else if (isPoorRelation(right)) { + warning("W041", this, "!==", right.value); + } + return this; + }); + relation("!=="); + relation("<"); + relation(">"); + relation("<="); + relation(">="); + bitwise("<<", "shiftleft", 120); + bitwise(">>", "shiftright", 120); + bitwise(">>>", "shiftrightunsigned", 120); + infix("in", "in", 120); + infix("instanceof", "instanceof", 120); + infix("+", function (left, that) { + var right = expression(130); + if (left && right && left.id === "(string)" && right.id === "(string)") { + left.value += right.value; + left.character = right.character; + if (!state.option.scripturl && reg.javascriptURL.test(left.value)) { + warning("W050", left); + } + return left; + } + that.left = left; + that.right = right; + return that; + }, 130); + prefix("+", "num"); + prefix("+++", function () { + warning("W007"); + this.right = expression(150); + this.arity = "unary"; + return this; + }); + infix("+++", function (left) { + warning("W007"); + this.left = left; + this.right = expression(130); + return this; + }, 130); + infix("-", "sub", 130); + prefix("-", "neg"); + prefix("---", function () { + warning("W006"); + this.right = expression(150); + this.arity = "unary"; + return this; + }); + infix("---", function (left) { + warning("W006"); + this.left = left; + this.right = expression(130); + return this; + }, 130); + infix("*", "mult", 140); + infix("/", "div", 140); + infix("%", "mod", 140); + + suffix("++", "postinc"); + prefix("++", "preinc"); + state.syntax["++"].exps = true; + + suffix("--", "postdec"); + prefix("--", "predec"); + state.syntax["--"].exps = true; + prefix("delete", function () { + var p = expression(10); + if (!p || (p.id !== "." && p.id !== "[")) { + warning("W051"); + } + this.first = p; + return this; + }).exps = true; + + prefix("~", function () { + if (state.option.bitwise) { + warning("W052", this, "~"); + } + expression(150); + return this; + }); + + prefix("...", function () { + if (!state.option.inESNext()) { + warning("W104", this, "spread/rest operator"); + } + if (!state.tokens.next.identifier) { + error("E030", state.tokens.next, state.tokens.next.value); + } + expression(150); + return this; + }); + + prefix("!", function () { + this.right = expression(150); + this.arity = "unary"; + + if (!this.right) { // '!' followed by nothing? Give up. + quit("E041", this.line || 0); + } + + if (bang[this.right.id] === true) { + warning("W018", this, "!"); + } + return this; + }); + + prefix("typeof", "typeof"); + prefix("new", function () { + var c = expression(155), i; + if (c && c.id !== "function") { + if (c.identifier) { + c["new"] = true; + switch (c.value) { + case "Number": + case "String": + case "Boolean": + case "Math": + case "JSON": + warning("W053", state.tokens.prev, c.value); + break; + case "Function": + if (!state.option.evil) { + warning("W054"); + } + break; + case "Date": + case "RegExp": + break; + default: + if (c.id !== "function") { + i = c.value.substr(0, 1); + if (state.option.newcap && (i < "A" || i > "Z") && !_.has(global, c.value)) { + warning("W055", state.tokens.curr); + } + } + } + } else { + if (c.id !== "." && c.id !== "[" && c.id !== "(") { + warning("W056", state.tokens.curr); + } + } + } else { + if (!state.option.supernew) + warning("W057", this); + } + adjacent(state.tokens.curr, state.tokens.next); + if (state.tokens.next.id !== "(" && !state.option.supernew) { + warning("W058", state.tokens.curr, state.tokens.curr.value); + } + this.first = c; + return this; + }); + state.syntax["new"].exps = true; + + prefix("void").exps = true; + + infix(".", function (left, that) { + adjacent(state.tokens.prev, state.tokens.curr); + nobreak(); + var m = identifier(false, true); + + if (typeof m === "string") { + countMember(m); + } + + that.left = left; + that.right = m; + + if (m && m === "hasOwnProperty" && state.tokens.next.value === "=") { + warning("W001"); + } + + if (left && left.value === "arguments" && (m === "callee" || m === "caller")) { + if (state.option.noarg) + warning("W059", left, m); + else if (state.directive["use strict"]) + error("E008"); + } else if (!state.option.evil && left && left.value === "document" && + (m === "write" || m === "writeln")) { + warning("W060", left); + } + + if (!state.option.evil && (m === "eval" || m === "execScript")) { + warning("W061"); + } + + return that; + }, 160, true); + + infix("(", function (left, that) { + if (state.tokens.prev.id !== "}" && state.tokens.prev.id !== ")") { + nobreak(state.tokens.prev, state.tokens.curr); + } + + nospace(); + if (state.option.immed && left && !left.immed && left.id === "function") { + warning("W062"); + } + + var n = 0; + var p = []; + + if (left) { + if (left.type === "(identifier)") { + if (left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)) { + if ("Number String Boolean Date Object".indexOf(left.value) === -1) { + if (left.value === "Math") { + warning("W063", left); + } else if (state.option.newcap) { + warning("W064", left); + } + } + } + } + } + + if (state.tokens.next.id !== ")") { + for (;;) { + p[p.length] = expression(10); + n += 1; + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + } + + advance(")"); + nospace(state.tokens.prev, state.tokens.curr); + + if (typeof left === "object") { + if (left.value === "parseInt" && n === 1) { + warning("W065", state.tokens.curr); + } + if (!state.option.evil) { + if (left.value === "eval" || left.value === "Function" || + left.value === "execScript") { + warning("W061", left); + + if (p[0] && [0].id === "(string)") { + addInternalSrc(left, p[0].value); + } + } else if (p[0] && p[0].id === "(string)" && + (left.value === "setTimeout" || + left.value === "setInterval")) { + warning("W066", left); + addInternalSrc(left, p[0].value); + + // window.setTimeout/setInterval + } else if (p[0] && p[0].id === "(string)" && + left.value === "." && + left.left.value === "window" && + (left.right === "setTimeout" || + left.right === "setInterval")) { + warning("W066", left); + addInternalSrc(left, p[0].value); + } + } + if (!left.identifier && left.id !== "." && left.id !== "[" && + left.id !== "(" && left.id !== "&&" && left.id !== "||" && + left.id !== "?") { + warning("W067", left); + } + } + + that.left = left; + return that; + }, 155, true).exps = true; + + prefix("(", function () { + nospace(); + var bracket, brackets = []; + var pn, pn1, i = 0; + var ret; + + do { + pn = peek(i); + i += 1; + pn1 = peek(i); + i += 1; + } while (pn.value !== ")" && pn1.value !== "=>" && pn1.value !== ";" && pn1.type !== "(end)"); + + if (state.tokens.next.id === "function") { + state.tokens.next.immed = true; + } + + var exprs = []; + + if (state.tokens.next.id !== ")") { + for (;;) { + if (pn1.value === "=>" && state.tokens.next.value === "{") { + bracket = state.tokens.next; + bracket.left = destructuringExpression(); + brackets.push(bracket); + for (var t in bracket.left) { + exprs.push(bracket.left[t].token); + } + } else { + exprs.push(expression(10)); + } + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + } + + advance(")", this); + nospace(state.tokens.prev, state.tokens.curr); + if (state.option.immed && exprs[0] && exprs[0].id === "function") { + if (state.tokens.next.id !== "(" && + (state.tokens.next.id !== "." || (peek().value !== "call" && peek().value !== "apply"))) { + warning("W068", this); + } + } + + if (state.tokens.next.value === "=>") { + return exprs; + } + if (!exprs.length) { + return; + } + if (exprs.length > 1) { + ret = Object.create(state.syntax[","]); + ret.exprs = exprs; + } else { + ret = exprs[0]; + } + if (ret) { + ret.paren = true; + } + return ret; + }); + + application("=>"); + + infix("[", function (left, that) { + nobreak(state.tokens.prev, state.tokens.curr); + nospace(); + var e = expression(10), s; + if (e && e.type === "(string)") { + if (!state.option.evil && (e.value === "eval" || e.value === "execScript")) { + warning("W061", that); + } + + countMember(e.value); + if (!state.option.sub && reg.identifier.test(e.value)) { + s = state.syntax[e.value]; + if (!s || !isReserved(s)) { + warning("W069", state.tokens.prev, e.value); + } + } + } + advance("]", that); + + if (e && e.value === "hasOwnProperty" && state.tokens.next.value === "=") { + warning("W001"); + } + + nospace(state.tokens.prev, state.tokens.curr); + that.left = left; + that.right = e; + return that; + }, 160, true); + + function comprehensiveArrayExpression() { + var res = {}; + res.exps = true; + funct["(comparray)"].stack(); + + // Handle reversed for expressions, used in spidermonkey + var reversed = false; + if (state.tokens.next.value !== "for") { + reversed = true; + if (!state.option.inMoz(true)) { + warning("W116", state.tokens.next, "for", state.tokens.next.value); + } + funct["(comparray)"].setState("use"); + res.right = expression(10); + } + + advance("for"); + if (state.tokens.next.value === "each") { + advance("each"); + if (!state.option.inMoz(true)) { + warning("W118", state.tokens.curr, "for each"); + } + } + advance("("); + funct["(comparray)"].setState("define"); + res.left = expression(130); + if (_.contains(["in", "of"], state.tokens.next.value)) { + advance(); + } else { + error("E045", state.tokens.curr); + } + funct["(comparray)"].setState("generate"); + expression(10); + + advance(")"); + if (state.tokens.next.value === "if") { + advance("if"); + advance("("); + funct["(comparray)"].setState("filter"); + res.filter = expression(10); + advance(")"); + } + + if (!reversed) { + funct["(comparray)"].setState("use"); + res.right = expression(10); + } + + advance("]"); + funct["(comparray)"].unstack(); + return res; + } + + prefix("[", function () { + var blocktype = lookupBlockType(true); + if (blocktype.isCompArray) { + if (!state.option.inESNext()) { + warning("W119", state.tokens.curr, "array comprehension"); + } + return comprehensiveArrayExpression(); + } else if (blocktype.isDestAssign && !state.option.inESNext()) { + warning("W104", state.tokens.curr, "destructuring assignment"); + } + var b = state.tokens.curr.line !== state.tokens.next.line; + this.first = []; + if (b) { + indent += state.option.indent; + if (state.tokens.next.from === indent + state.option.indent) { + indent += state.option.indent; + } + } + while (state.tokens.next.id !== "(end)") { + while (state.tokens.next.id === ",") { + if (!state.option.inES5()) + warning("W070"); + advance(","); + } + if (state.tokens.next.id === "]") { + break; + } + if (b && state.tokens.curr.line !== state.tokens.next.line) { + indentation(); + } + this.first.push(expression(10)); + if (state.tokens.next.id === ",") { + comma({ allowTrailing: true }); + if (state.tokens.next.id === "]" && !state.option.inES5(true)) { + warning("W070", state.tokens.curr); + break; + } + } else { + break; + } + } + if (b) { + indent -= state.option.indent; + indentation(); + } + advance("]", this); + return this; + }, 160); + + + function property_name() { + var id = optionalidentifier(false, true); + + if (!id) { + if (state.tokens.next.id === "(string)") { + id = state.tokens.next.value; + advance(); + } else if (state.tokens.next.id === "(number)") { + id = state.tokens.next.value.toString(); + advance(); + } + } + + if (id === "hasOwnProperty") { + warning("W001"); + } + + return id; + } + + + function functionparams(parsed) { + var curr, next; + var params = []; + var ident; + var tokens = []; + var t; + var pastDefault = false; + + if (parsed) { + if (parsed instanceof Array) { + for (var i in parsed) { + curr = parsed[i]; + if (_.contains(["{", "["], curr.id)) { + for (t in curr.left) { + t = tokens[t]; + if (t.id) { + params.push(t.id); + addlabel(t.id, "unused", t.token); + } + } + } else if (curr.value === "...") { + if (!state.option.inESNext()) { + warning("W104", curr, "spread/rest operator"); + } + continue; + } else { + addlabel(curr.value, "unused", curr); + } + } + return params; + } else { + if (parsed.identifier === true) { + addlabel(parsed.value, "unused", parsed); + return [parsed]; + } + } + } + + next = state.tokens.next; + + advance("("); + nospace(); + + if (state.tokens.next.id === ")") { + advance(")"); + return; + } + + for (;;) { + if (_.contains(["{", "["], state.tokens.next.id)) { + tokens = destructuringExpression(); + for (t in tokens) { + t = tokens[t]; + if (t.id) { + params.push(t.id); + addlabel(t.id, "unused", t.token); + } + } + } else if (state.tokens.next.value === "...") { + if (!state.option.inESNext()) { + warning("W104", state.tokens.next, "spread/rest operator"); + } + advance("..."); + nospace(); + ident = identifier(true); + params.push(ident); + addlabel(ident, "unused", state.tokens.curr); + } else { + ident = identifier(true); + params.push(ident); + addlabel(ident, "unused", state.tokens.curr); + } + + // it is a syntax error to have a regular argument after a default argument + if (pastDefault) { + if (state.tokens.next.id !== "=") { + error("E051", state.tokens.current); + } + } + if (state.tokens.next.id === "=") { + if (!state.option.inESNext()) { + warning("W119", state.tokens.next, "default parameters"); + } + advance("="); + pastDefault = true; + expression(10); + } + if (state.tokens.next.id === ",") { + comma(); + } else { + advance(")", next); + nospace(state.tokens.prev, state.tokens.curr); + return params; + } + } + } + + + function doFunction(name, statement, generator, fatarrowparams) { + var f; + var oldOption = state.option; + var oldIgnored = state.ignored; + var oldScope = scope; + + state.option = Object.create(state.option); + state.ignored = Object.create(state.ignored); + scope = Object.create(scope); + + funct = { + "(name)" : name || "\"" + anonname + "\"", + "(line)" : state.tokens.next.line, + "(character)" : state.tokens.next.character, + "(context)" : funct, + "(breakage)" : 0, + "(loopage)" : 0, + "(metrics)" : createMetrics(state.tokens.next), + "(scope)" : scope, + "(statement)" : statement, + "(tokens)" : {}, + "(blockscope)": funct["(blockscope)"], + "(comparray)" : funct["(comparray)"] + }; + + if (generator) { + funct["(generator)"] = true; + } + + f = funct; + state.tokens.curr.funct = funct; + + functions.push(funct); + + if (name) { + addlabel(name, "function"); + } + + funct["(params)"] = functionparams(fatarrowparams); + + funct["(metrics)"].verifyMaxParametersPerFunction(funct["(params)"]); + + block(false, true, true, fatarrowparams ? true:false); + + if (generator && funct["(generator)"] !== "yielded") { + error("E047", state.tokens.curr); + } + + funct["(metrics)"].verifyMaxStatementsPerFunction(); + funct["(metrics)"].verifyMaxComplexityPerFunction(); + funct["(unusedOption)"] = state.option.unused; + + scope = oldScope; + state.option = oldOption; + state.ignored = oldIgnored; + funct["(last)"] = state.tokens.curr.line; + funct["(lastcharacter)"] = state.tokens.curr.character; + funct = funct["(context)"]; + + return f; + } + + function createMetrics(functionStartToken) { + return { + statementCount: 0, + nestedBlockDepth: -1, + ComplexityCount: 1, + verifyMaxStatementsPerFunction: function () { + if (state.option.maxstatements && + this.statementCount > state.option.maxstatements) { + warning("W071", functionStartToken, this.statementCount); + } + }, + + verifyMaxParametersPerFunction: function (params) { + params = params || []; + + if (state.option.maxparams && params.length > state.option.maxparams) { + warning("W072", functionStartToken, params.length); + } + }, + + verifyMaxNestedBlockDepthPerFunction: function () { + if (state.option.maxdepth && + this.nestedBlockDepth > 0 && + this.nestedBlockDepth === state.option.maxdepth + 1) { + warning("W073", null, this.nestedBlockDepth); + } + }, + + verifyMaxComplexityPerFunction: function () { + var max = state.option.maxcomplexity; + var cc = this.ComplexityCount; + if (max && cc > max) { + warning("W074", functionStartToken, cc); + } + } + }; + } + + function increaseComplexityCount() { + funct["(metrics)"].ComplexityCount += 1; + } + + // Parse assignments that were found instead of conditionals. + // For example: if (a = 1) { ... } + + function checkCondAssignment(expr) { + var id, paren; + if (expr) { + id = expr.id; + paren = expr.paren; + if (id === "," && (expr = expr.exprs[expr.exprs.length - 1])) { + id = expr.id; + paren = paren || expr.paren; + } + } + switch (id) { + case "=": + case "+=": + case "-=": + case "*=": + case "%=": + case "&=": + case "|=": + case "^=": + case "/=": + if (!paren && !state.option.boss) { + warning("W084"); + } + } + } + + + (function (x) { + x.nud = function (isclassdef) { + var b, f, i, p, t, g; + var props = {}; // All properties, including accessors + var tag = ""; + + function saveProperty(name, tkn) { + if (props[name] && _.has(props, name)) + warning("W075", state.tokens.next, i); + else + props[name] = {}; + + props[name].basic = true; + props[name].basictkn = tkn; + } + + function saveSetter(name, tkn) { + if (props[name] && _.has(props, name)) { + if (props[name].basic || props[name].setter) + warning("W075", state.tokens.next, i); + } else { + props[name] = {}; + } + + props[name].setter = true; + props[name].setterToken = tkn; + } + + function saveGetter(name) { + if (props[name] && _.has(props, name)) { + if (props[name].basic || props[name].getter) + warning("W075", state.tokens.next, i); + } else { + props[name] = {}; + } + + props[name].getter = true; + props[name].getterToken = state.tokens.curr; + } + + b = state.tokens.curr.line !== state.tokens.next.line; + if (b) { + indent += state.option.indent; + if (state.tokens.next.from === indent + state.option.indent) { + indent += state.option.indent; + } + } + + for (;;) { + if (state.tokens.next.id === "}") { + break; + } + + if (b) { + indentation(); + } + + if (isclassdef && state.tokens.next.value === "static") { + advance("static"); + tag = "static "; + } + + if (state.tokens.next.value === "get" && peek().id !== ":") { + advance("get"); + + if (!state.option.inES5(!isclassdef)) { + error("E034"); + } + + i = property_name(); + if (!i) { + error("E035"); + } + + // It is a Syntax Error if PropName of MethodDefinition is + // "constructor" and SpecialMethod of MethodDefinition is true. + if (isclassdef && i === "constructor") { + error("E049", state.tokens.next, "class getter method", i); + } + + saveGetter(tag + i); + t = state.tokens.next; + adjacent(state.tokens.curr, state.tokens.next); + f = doFunction(); + p = f["(params)"]; + + if (p) { + warning("W076", t, p[0], i); + } + + adjacent(state.tokens.curr, state.tokens.next); + } else if (state.tokens.next.value === "set" && peek().id !== ":") { + advance("set"); + + if (!state.option.inES5(!isclassdef)) { + error("E034"); + } + + i = property_name(); + if (!i) { + error("E035"); + } + + // It is a Syntax Error if PropName of MethodDefinition is + // "constructor" and SpecialMethod of MethodDefinition is true. + if (isclassdef && i === "constructor") { + error("E049", state.tokens.next, "class setter method", i); + } + + saveSetter(tag + i, state.tokens.next); + t = state.tokens.next; + adjacent(state.tokens.curr, state.tokens.next); + f = doFunction(); + p = f["(params)"]; + + if (!p || p.length !== 1) { + warning("W077", t, i); + } + } else { + g = false; + if (state.tokens.next.value === "*" && state.tokens.next.type === "(punctuator)") { + if (!state.option.inESNext()) { + warning("W104", state.tokens.next, "generator functions"); + } + advance("*"); + g = true; + } + i = property_name(); + saveProperty(tag + i, state.tokens.next); + + if (typeof i !== "string") { + break; + } + + if (state.tokens.next.value === "(") { + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "concise methods"); + } + doFunction(i, undefined, g); + } else if (!isclassdef) { + advance(":"); + nonadjacent(state.tokens.curr, state.tokens.next); + expression(10); + } + } + // It is a Syntax Error if PropName of MethodDefinition is "prototype". + if (isclassdef && i === "prototype") { + error("E049", state.tokens.next, "class method", i); + } + + countMember(i); + if (isclassdef) { + tag = ""; + continue; + } + if (state.tokens.next.id === ",") { + comma({ allowTrailing: true, property: true }); + if (state.tokens.next.id === ",") { + warning("W070", state.tokens.curr); + } else if (state.tokens.next.id === "}" && !state.option.inES5(true)) { + warning("W070", state.tokens.curr); + } + } else { + break; + } + } + if (b) { + indent -= state.option.indent; + indentation(); + } + advance("}", this); + + // Check for lonely setters if in the ES5 mode. + if (state.option.inES5()) { + for (var name in props) { + if (_.has(props, name) && props[name].setter && !props[name].getter) { + warning("W078", props[name].setterToken); + } + } + } + return this; + }; + x.fud = function () { + error("E036", state.tokens.curr); + }; + }(delim("{"))); + + function destructuringExpression() { + var id, ids; + var identifiers = []; + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "destructuring expression"); + } + var nextInnerDE = function () { + var ident; + if (_.contains(["[", "{"], state.tokens.next.value)) { + ids = destructuringExpression(); + for (var id in ids) { + id = ids[id]; + identifiers.push({ id: id.id, token: id.token }); + } + } else if (state.tokens.next.value === ",") { + identifiers.push({ id: null, token: state.tokens.curr }); + } else { + ident = identifier(); + if (ident) + identifiers.push({ id: ident, token: state.tokens.curr }); + } + }; + if (state.tokens.next.value === "[") { + advance("["); + nextInnerDE(); + while (state.tokens.next.value !== "]") { + advance(","); + nextInnerDE(); + } + advance("]"); + } else if (state.tokens.next.value === "{") { + advance("{"); + id = identifier(); + if (state.tokens.next.value === ":") { + advance(":"); + nextInnerDE(); + } else { + identifiers.push({ id: id, token: state.tokens.curr }); + } + while (state.tokens.next.value !== "}") { + advance(","); + id = identifier(); + if (state.tokens.next.value === ":") { + advance(":"); + nextInnerDE(); + } else { + identifiers.push({ id: id, token: state.tokens.curr }); + } + } + advance("}"); + } + return identifiers; + } + function destructuringExpressionMatch(tokens, value) { + if (value.first) { + _.zip(tokens, value.first).forEach(function (val) { + var token = val[0]; + var value = val[1]; + if (token && value) { + token.first = value; + } else if (token && token.first && !value) { + warning("W080", token.first, token.first.value); + } /* else { + XXX value is discarded: wouldn't it need a warning ? + } */ + }); + } + } + + var conststatement = stmt("const", function (prefix) { + var tokens, value; + // state variable to know if it is a lone identifier, or a destructuring statement. + var lone; + + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "const"); + } + + this.first = []; + for (;;) { + var names = []; + nonadjacent(state.tokens.curr, state.tokens.next); + if (_.contains(["{", "["], state.tokens.next.value)) { + tokens = destructuringExpression(); + lone = false; + } else { + tokens = [ { id: identifier(), token: state.tokens.curr } ]; + lone = true; + } + for (var t in tokens) { + t = tokens[t]; + if (funct[t.id] === "const") { + warning("E011", null, t.id); + } + if (funct["(global)"] && predefined[t.id] === false) { + warning("W079", t.token, t.id); + } + if (t.id) { + addlabel(t.id, "const"); + names.push(t.token); + } + } + if (prefix) { + break; + } + + this.first = this.first.concat(names); + + if (state.tokens.next.id !== "=") { + warning("E012", state.tokens.curr, state.tokens.curr.value); + } + + if (state.tokens.next.id === "=") { + nonadjacent(state.tokens.curr, state.tokens.next); + advance("="); + nonadjacent(state.tokens.curr, state.tokens.next); + if (state.tokens.next.id === "undefined") { + warning("W080", state.tokens.prev, state.tokens.prev.value); + } + if (peek(0).id === "=" && state.tokens.next.identifier) { + warning("W120", state.tokens.next, state.tokens.next.value); + } + value = expression(10); + if (lone) { + tokens[0].first = value; + } else { + destructuringExpressionMatch(names, value); + } + } + + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + return this; + }); + conststatement.exps = true; + var varstatement = stmt("var", function (prefix) { + // JavaScript does not have block scope. It only has function scope. So, + // declaring a variable in a block can have unexpected consequences. + var tokens, lone, value; + + if (funct["(onevar)"] && state.option.onevar) { + warning("W081"); + } else if (!funct["(global)"]) { + funct["(onevar)"] = true; + } + + this.first = []; + for (;;) { + var names = []; + nonadjacent(state.tokens.curr, state.tokens.next); + if (_.contains(["{", "["], state.tokens.next.value)) { + tokens = destructuringExpression(); + lone = false; + } else { + tokens = [ { id: identifier(), token: state.tokens.curr } ]; + lone = true; + } + for (var t in tokens) { + t = tokens[t]; + if (state.option.inESNext() && funct[t.id] === "const") { + warning("E011", null, t.id); + } + if (funct["(global)"] && predefined[t.id] === false) { + warning("W079", t.token, t.id); + } + if (t.id) { + addlabel(t.id, "unused", t.token); + names.push(t.token); + } + } + if (prefix) { + break; + } + + this.first = this.first.concat(names); + + if (state.tokens.next.id === "=") { + nonadjacent(state.tokens.curr, state.tokens.next); + advance("="); + nonadjacent(state.tokens.curr, state.tokens.next); + if (state.tokens.next.id === "undefined") { + warning("W080", state.tokens.prev, state.tokens.prev.value); + } + if (peek(0).id === "=" && state.tokens.next.identifier) { + warning("W120", state.tokens.next, state.tokens.next.value); + } + value = expression(10); + if (lone) { + tokens[0].first = value; + } else { + destructuringExpressionMatch(names, value); + } + } + + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + return this; + }); + varstatement.exps = true; + var letstatement = stmt("let", function (prefix) { + var tokens, lone, value, letblock; + + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "let"); + } + + if (state.tokens.next.value === "(") { + if (!state.option.inMoz(true)) { + warning("W118", state.tokens.next, "let block"); + } + advance("("); + funct["(blockscope)"].stack(); + letblock = true; + } else if (funct["(nolet)"]) { + error("E048", state.tokens.curr); + } + + if (funct["(onevar)"] && state.option.onevar) { + warning("W081"); + } else if (!funct["(global)"]) { + funct["(onevar)"] = true; + } + + this.first = []; + for (;;) { + var names = []; + nonadjacent(state.tokens.curr, state.tokens.next); + if (_.contains(["{", "["], state.tokens.next.value)) { + tokens = destructuringExpression(); + lone = false; + } else { + tokens = [ { id: identifier(), token: state.tokens.curr.value } ]; + lone = true; + } + for (var t in tokens) { + t = tokens[t]; + if (state.option.inESNext() && funct[t.id] === "const") { + warning("E011", null, t.id); + } + if (funct["(global)"] && predefined[t.id] === false) { + warning("W079", t.token, t.id); + } + if (t.id && !funct["(nolet)"]) { + addlabel(t.id, "unused", t.token, true); + names.push(t.token); + } + } + if (prefix) { + break; + } + + this.first = this.first.concat(names); + + if (state.tokens.next.id === "=") { + nonadjacent(state.tokens.curr, state.tokens.next); + advance("="); + nonadjacent(state.tokens.curr, state.tokens.next); + if (state.tokens.next.id === "undefined") { + warning("W080", state.tokens.prev, state.tokens.prev.value); + } + if (peek(0).id === "=" && state.tokens.next.identifier) { + warning("W120", state.tokens.next, state.tokens.next.value); + } + value = expression(10); + if (lone) { + tokens[0].first = value; + } else { + destructuringExpressionMatch(names, value); + } + } + + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + if (letblock) { + advance(")"); + block(true, true); + this.block = true; + funct["(blockscope)"].unstack(); + } + + return this; + }); + letstatement.exps = true; + + blockstmt("class", function () { + return classdef.call(this, true); + }); + + function classdef(stmt) { + /*jshint validthis:true */ + if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "class"); + } + if (stmt) { + // BindingIdentifier + this.name = identifier(); + addlabel(this.name, "unused", state.tokens.curr); + } else if (state.tokens.next.identifier && state.tokens.next.value !== "extends") { + // BindingIdentifier(opt) + this.name = identifier(); + } + classtail(this); + return this; + } + + function classtail(c) { + var strictness = state.directive["use strict"]; + + // ClassHeritage(opt) + if (state.tokens.next.value === "extends") { + advance("extends"); + c.heritage = expression(10); + } + + // A ClassBody is always strict code. + state.directive["use strict"] = true; + advance("{"); + // ClassBody(opt) + c.body = state.syntax["{"].nud(true); + state.directive["use strict"] = strictness; + } + + blockstmt("function", function () { + var generator = false; + if (state.tokens.next.value === "*") { + advance("*"); + if (state.option.inESNext(true)) { + generator = true; + } else { + warning("W119", state.tokens.curr, "function*"); + } + } + if (inblock) { + warning("W082", state.tokens.curr); + + } + var i = identifier(); + if (funct[i] === "const") { + warning("E011", null, i); + } + adjacent(state.tokens.curr, state.tokens.next); + addlabel(i, "unction", state.tokens.curr); + + doFunction(i, { statement: true }, generator); + if (state.tokens.next.id === "(" && state.tokens.next.line === state.tokens.curr.line) { + error("E039"); + } + return this; + }); + + prefix("function", function () { + var generator = false; + if (state.tokens.next.value === "*") { + if (!state.option.inESNext()) { + warning("W119", state.tokens.curr, "function*"); + } + advance("*"); + generator = true; + } + var i = optionalidentifier(); + if (i || state.option.gcl) { + adjacent(state.tokens.curr, state.tokens.next); + } else { + nonadjacent(state.tokens.curr, state.tokens.next); + } + doFunction(i, undefined, generator); + if (!state.option.loopfunc && funct["(loopage)"]) { + warning("W083"); + } + return this; + }); + + blockstmt("if", function () { + var t = state.tokens.next; + increaseComplexityCount(); + state.condition = true; + advance("("); + nonadjacent(this, t); + nospace(); + checkCondAssignment(expression(0)); + advance(")", t); + state.condition = false; + nospace(state.tokens.prev, state.tokens.curr); + block(true, true); + if (state.tokens.next.id === "else") { + nonadjacent(state.tokens.curr, state.tokens.next); + advance("else"); + if (state.tokens.next.id === "if" || state.tokens.next.id === "switch") { + statement(true); + } else { + block(true, true); + } + } + return this; + }); + + blockstmt("try", function () { + var b; + + function doCatch() { + var oldScope = scope; + var e; + + advance("catch"); + nonadjacent(state.tokens.curr, state.tokens.next); + advance("("); + + scope = Object.create(oldScope); + + e = state.tokens.next.value; + if (state.tokens.next.type !== "(identifier)") { + e = null; + warning("E030", state.tokens.next, e); + } + + advance(); + + funct = { + "(name)" : "(catch)", + "(line)" : state.tokens.next.line, + "(character)": state.tokens.next.character, + "(context)" : funct, + "(breakage)" : funct["(breakage)"], + "(loopage)" : funct["(loopage)"], + "(scope)" : scope, + "(statement)": false, + "(metrics)" : createMetrics(state.tokens.next), + "(catch)" : true, + "(tokens)" : {}, + "(blockscope)": funct["(blockscope)"], + "(comparray)": funct["(comparray)"] + }; + + if (e) { + addlabel(e, "exception"); + } + + if (state.tokens.next.value === "if") { + if (!state.option.inMoz(true)) { + warning("W118", state.tokens.curr, "catch filter"); + } + advance("if"); + expression(0); + } + + advance(")"); + + state.tokens.curr.funct = funct; + functions.push(funct); + + block(false); + + scope = oldScope; + + funct["(last)"] = state.tokens.curr.line; + funct["(lastcharacter)"] = state.tokens.curr.character; + funct = funct["(context)"]; + } + + block(false); + + while (state.tokens.next.id === "catch") { + increaseComplexityCount(); + if (b && (!state.option.inMoz(true))) { + warning("W118", state.tokens.next, "multiple catch blocks"); + } + doCatch(); + b = true; + } + + if (state.tokens.next.id === "finally") { + advance("finally"); + block(false); + return; + } + + if (!b) { + error("E021", state.tokens.next, "catch", state.tokens.next.value); + } + + return this; + }); + + blockstmt("while", function () { + var t = state.tokens.next; + funct["(breakage)"] += 1; + funct["(loopage)"] += 1; + increaseComplexityCount(); + advance("("); + nonadjacent(this, t); + nospace(); + checkCondAssignment(expression(0)); + advance(")", t); + nospace(state.tokens.prev, state.tokens.curr); + block(true, true); + funct["(breakage)"] -= 1; + funct["(loopage)"] -= 1; + return this; + }).labelled = true; + + blockstmt("with", function () { + var t = state.tokens.next; + if (state.directive["use strict"]) { + error("E010", state.tokens.curr); + } else if (!state.option.withstmt) { + warning("W085", state.tokens.curr); + } + + advance("("); + nonadjacent(this, t); + nospace(); + expression(0); + advance(")", t); + nospace(state.tokens.prev, state.tokens.curr); + block(true, true); + + return this; + }); + + blockstmt("switch", function () { + var t = state.tokens.next, + g = false; + funct["(breakage)"] += 1; + advance("("); + nonadjacent(this, t); + nospace(); + checkCondAssignment(expression(0)); + advance(")", t); + nospace(state.tokens.prev, state.tokens.curr); + nonadjacent(state.tokens.curr, state.tokens.next); + t = state.tokens.next; + advance("{"); + nonadjacent(state.tokens.curr, state.tokens.next); + indent += state.option.indent; + this.cases = []; + + for (;;) { + switch (state.tokens.next.id) { + case "case": + switch (funct["(verb)"]) { + case "yield": + case "break": + case "case": + case "continue": + case "return": + case "switch": + case "throw": + break; + default: + // You can tell JSHint that you don't use break intentionally by + // adding a comment /* falls through */ on a line just before + // the next `case`. + if (!reg.fallsThrough.test(state.lines[state.tokens.next.line - 2])) { + warning("W086", state.tokens.curr, "case"); + } + } + indentation(-state.option.indent); + advance("case"); + this.cases.push(expression(20)); + increaseComplexityCount(); + g = true; + advance(":"); + funct["(verb)"] = "case"; + break; + case "default": + switch (funct["(verb)"]) { + case "yield": + case "break": + case "continue": + case "return": + case "throw": + break; + default: + // Do not display a warning if 'default' is the first statement or if + // there is a special /* falls through */ comment. + if (this.cases.length) { + if (!reg.fallsThrough.test(state.lines[state.tokens.next.line - 2])) { + warning("W086", state.tokens.curr, "default"); + } + } + } + indentation(-state.option.indent); + advance("default"); + g = true; + advance(":"); + break; + case "}": + indent -= state.option.indent; + indentation(); + advance("}", t); + funct["(breakage)"] -= 1; + funct["(verb)"] = undefined; + return; + case "(end)": + error("E023", state.tokens.next, "}"); + return; + default: + if (g) { + switch (state.tokens.curr.id) { + case ",": + error("E040"); + return; + case ":": + g = false; + statements(); + break; + default: + error("E025", state.tokens.curr); + return; + } + } else { + if (state.tokens.curr.id === ":") { + advance(":"); + error("E024", state.tokens.curr, ":"); + statements(); + } else { + error("E021", state.tokens.next, "case", state.tokens.next.value); + return; + } + } + } + } + }).labelled = true; + + stmt("debugger", function () { + if (!state.option.debug) { + warning("W087", this); + } + return this; + }).exps = true; + + (function () { + var x = stmt("do", function () { + funct["(breakage)"] += 1; + funct["(loopage)"] += 1; + increaseComplexityCount(); + + this.first = block(true, true); + advance("while"); + var t = state.tokens.next; + nonadjacent(state.tokens.curr, t); + advance("("); + nospace(); + checkCondAssignment(expression(0)); + advance(")", t); + nospace(state.tokens.prev, state.tokens.curr); + funct["(breakage)"] -= 1; + funct["(loopage)"] -= 1; + return this; + }); + x.labelled = true; + x.exps = true; + }()); + + blockstmt("for", function () { + var s, t = state.tokens.next; + var letscope = false; + var foreachtok = null; + + if (t.value === "each") { + foreachtok = t; + advance("each"); + if (!state.option.inMoz(true)) { + warning("W118", state.tokens.curr, "for each"); + } + } + + funct["(breakage)"] += 1; + funct["(loopage)"] += 1; + increaseComplexityCount(); + advance("("); + nonadjacent(this, t); + nospace(); + + // what kind of for(…) statement it is? for(…of…)? for(…in…)? for(…;…;…)? + var nextop; // contains the token of the "in" or "of" operator + var i = 0; + var inof = ["in", "of"]; + do { + nextop = peek(i); + ++i; + } while (!_.contains(inof, nextop.value) && nextop.value !== ";" && + nextop.type !== "(end)"); + + // if we're in a for (… in|of …) statement + if (_.contains(inof, nextop.value)) { + if (!state.option.inESNext() && nextop.value === "of") { + error("W104", nextop, "for of"); + } + if (state.tokens.next.id === "var") { + advance("var"); + state.syntax["var"].fud.call(state.syntax["var"].fud, true); + } else if (state.tokens.next.id === "let") { + advance("let"); + // create a new block scope + letscope = true; + funct["(blockscope)"].stack(); + state.syntax["let"].fud.call(state.syntax["let"].fud, true); + } else { + switch (funct[state.tokens.next.value]) { + case "unused": + funct[state.tokens.next.value] = "var"; + break; + case "var": + break; + default: + if (!funct["(blockscope)"].getlabel(state.tokens.next.value)) + warning("W088", state.tokens.next, state.tokens.next.value); + } + advance(); + } + advance(nextop.value); + expression(20); + advance(")", t); + s = block(true, true); + if (state.option.forin && s && (s.length > 1 || typeof s[0] !== "object" || + s[0].value !== "if")) { + warning("W089", this); + } + funct["(breakage)"] -= 1; + funct["(loopage)"] -= 1; + } else { + if (foreachtok) { + error("E045", foreachtok); + } + if (state.tokens.next.id !== ";") { + if (state.tokens.next.id === "var") { + advance("var"); + state.syntax["var"].fud.call(state.syntax["var"].fud); + } else if (state.tokens.next.id === "let") { + advance("let"); + // create a new block scope + letscope = true; + funct["(blockscope)"].stack(); + state.syntax["let"].fud.call(state.syntax["let"].fud); + } else { + for (;;) { + expression(0, "for"); + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + } + } + nolinebreak(state.tokens.curr); + advance(";"); + if (state.tokens.next.id !== ";") { + checkCondAssignment(expression(0)); + } + nolinebreak(state.tokens.curr); + advance(";"); + if (state.tokens.next.id === ";") { + error("E021", state.tokens.next, ")", ";"); + } + if (state.tokens.next.id !== ")") { + for (;;) { + expression(0, "for"); + if (state.tokens.next.id !== ",") { + break; + } + comma(); + } + } + advance(")", t); + nospace(state.tokens.prev, state.tokens.curr); + block(true, true); + funct["(breakage)"] -= 1; + funct["(loopage)"] -= 1; + + } + // unstack loop blockscope + if (letscope) { + funct["(blockscope)"].unstack(); + } + return this; + }).labelled = true; + + + stmt("break", function () { + var v = state.tokens.next.value; + + if (funct["(breakage)"] === 0) + warning("W052", state.tokens.next, this.value); + + if (!state.option.asi) + nolinebreak(this); + + if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { + if (state.tokens.curr.line === state.tokens.next.line) { + if (funct[v] !== "label") { + warning("W090", state.tokens.next, v); + } else if (scope[v] !== funct) { + warning("W091", state.tokens.next, v); + } + this.first = state.tokens.next; + advance(); + } + } + reachable("break"); + return this; + }).exps = true; + + + stmt("continue", function () { + var v = state.tokens.next.value; + + if (funct["(breakage)"] === 0) + warning("W052", state.tokens.next, this.value); + + if (!state.option.asi) + nolinebreak(this); + + if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { + if (state.tokens.curr.line === state.tokens.next.line) { + if (funct[v] !== "label") { + warning("W090", state.tokens.next, v); + } else if (scope[v] !== funct) { + warning("W091", state.tokens.next, v); + } + this.first = state.tokens.next; + advance(); + } + } else if (!funct["(loopage)"]) { + warning("W052", state.tokens.next, this.value); + } + reachable("continue"); + return this; + }).exps = true; + + + stmt("return", function () { + if (this.line === state.tokens.next.line) { + if (state.tokens.next.id === "(regexp)") + warning("W092"); + + if (state.tokens.next.id !== ";" && !state.tokens.next.reach) { + nonadjacent(state.tokens.curr, state.tokens.next); + this.first = expression(0); + + if (this.first && + this.first.type === "(punctuator)" && this.first.value === "=" && !state.option.boss) { + warningAt("W093", this.first.line, this.first.character); + } + } + } else { + if (state.tokens.next.type === "(punctuator)" && + ["[", "{", "+", "-"].indexOf(state.tokens.next.value) > -1) { + nolinebreak(this); // always warn (Line breaking error) + } + } + reachable("return"); + return this; + }).exps = true; + + (function (x) { + x.exps = true; + x.lbp = 25; + }(prefix("yield", function () { + var prev = state.tokens.prev; + if (state.option.inESNext(true) && !funct["(generator)"]) { + error("E046", state.tokens.curr, "yield"); + } else if (!state.option.inESNext()) { + warning("W104", state.tokens.curr, "yield"); + } + funct["(generator)"] = "yielded"; + if (this.line === state.tokens.next.line || !state.option.inMoz(true)) { + if (state.tokens.next.id === "(regexp)") + warning("W092"); + + if (state.tokens.next.id !== ";" && !state.tokens.next.reach && state.tokens.next.nud) { + nobreaknonadjacent(state.tokens.curr, state.tokens.next); + this.first = expression(10); + + if (this.first.type === "(punctuator)" && this.first.value === "=" && !state.option.boss) { + warningAt("W093", this.first.line, this.first.character); + } + } + + if (state.option.inMoz(true) && state.tokens.next.id !== ")" && + (prev.lbp > 30 || (!prev.assign && !isEndOfExpr()) || prev.id === "yield")) { + error("E050", this); + } + } else if (!state.option.asi) { + nolinebreak(this); // always warn (Line breaking error) + } + return this; + }))); + + + stmt("throw", function () { + nolinebreak(this); + nonadjacent(state.tokens.curr, state.tokens.next); + this.first = expression(20); + reachable("throw"); + return this; + }).exps = true; + + stmt("import", function () { + if (!state.option.inESNext()) { + warning("W119", state.tokens.curr, "import"); + } + + if (state.tokens.next.identifier) { + this.name = identifier(); + addlabel(this.name, "unused", state.tokens.curr); + } else { + advance("{"); + for (;;) { + var importName; + if (state.tokens.next.type === "default") { + importName = "default"; + advance("default"); + } else { + importName = identifier(); + } + if (state.tokens.next.value === "as") { + advance("as"); + importName = identifier(); + } + addlabel(importName, "unused", state.tokens.curr); + + if (state.tokens.next.value === ",") { + advance(","); + } else if (state.tokens.next.value === "}") { + advance("}"); + break; + } else { + error("E024", state.tokens.next, state.tokens.next.value); + break; + } + } + } + + advance("from"); + advance("(string)"); + return this; + }).exps = true; + + stmt("export", function () { + if (!state.option.inESNext()) { + warning("W119", state.tokens.curr, "export"); + } + + if (state.tokens.next.type === "default") { + advance("default"); + if (state.tokens.next.id === "function" || state.tokens.next.id === "class") { + this.block = true; + } + this.exportee = expression(10); + + return this; + } + + if (state.tokens.next.value === "{") { + advance("{"); + for (;;) { + identifier(); + + if (state.tokens.next.value === ",") { + advance(","); + } else if (state.tokens.next.value === "}") { + advance("}"); + break; + } else { + error("E024", state.tokens.next, state.tokens.next.value); + break; + } + } + return this; + } + + if (state.tokens.next.id === "var") { + advance("var"); + state.syntax["var"].fud.call(state.syntax["var"].fud); + } else if (state.tokens.next.id === "let") { + advance("let"); + state.syntax["let"].fud.call(state.syntax["let"].fud); + } else if (state.tokens.next.id === "const") { + advance("const"); + state.syntax["const"].fud.call(state.syntax["const"].fud); + } else if (state.tokens.next.id === "function") { + this.block = true; + advance("function"); + state.syntax["function"].fud(); + } else if (state.tokens.next.id === "class") { + this.block = true; + advance("class"); + state.syntax["class"].fud(); + } else { + error("E024", state.tokens.next, state.tokens.next.value); + } + + return this; + }).exps = true; + + // Future Reserved Words + + FutureReservedWord("abstract"); + FutureReservedWord("boolean"); + FutureReservedWord("byte"); + FutureReservedWord("char"); + FutureReservedWord("class", { es5: true, nud: classdef }); + FutureReservedWord("double"); + FutureReservedWord("enum", { es5: true }); + FutureReservedWord("export", { es5: true }); + FutureReservedWord("extends", { es5: true }); + FutureReservedWord("final"); + FutureReservedWord("float"); + FutureReservedWord("goto"); + FutureReservedWord("implements", { es5: true, strictOnly: true }); + FutureReservedWord("import", { es5: true }); + FutureReservedWord("int"); + FutureReservedWord("interface", { es5: true, strictOnly: true }); + FutureReservedWord("long"); + FutureReservedWord("native"); + FutureReservedWord("package", { es5: true, strictOnly: true }); + FutureReservedWord("private", { es5: true, strictOnly: true }); + FutureReservedWord("protected", { es5: true, strictOnly: true }); + FutureReservedWord("public", { es5: true, strictOnly: true }); + FutureReservedWord("short"); + FutureReservedWord("static", { es5: true, strictOnly: true }); + FutureReservedWord("super", { es5: true }); + FutureReservedWord("synchronized"); + FutureReservedWord("throws"); + FutureReservedWord("transient"); + FutureReservedWord("volatile"); + + // this function is used to determine wether a squarebracket or a curlybracket + // expression is a comprehension array, destructuring assignment or a json value. + + var lookupBlockType = function () { + var pn, pn1; + var i = -1; + var bracketStack = 0; + var ret = {}; + if (_.contains(["[", "{"], state.tokens.curr.value)) + bracketStack += 1; + do { + pn = (i === -1) ? state.tokens.next : peek(i); + pn1 = peek(i + 1); + i = i + 1; + if (_.contains(["[", "{"], pn.value)) { + bracketStack += 1; + } else if (_.contains(["]", "}"], pn.value)) { + bracketStack -= 1; + } + if (pn.identifier && pn.value === "for" && bracketStack === 1) { + ret.isCompArray = true; + ret.notJson = true; + break; + } + if (_.contains(["}", "]"], pn.value) && pn1.value === "=" && bracketStack === 0) { + ret.isDestAssign = true; + ret.notJson = true; + break; + } + if (pn.value === ";") { + ret.isBlock = true; + ret.notJson = true; + } + } while (bracketStack > 0 && pn.id !== "(end)" && i < 15); + return ret; + }; + + // Check whether this function has been reached for a destructuring assign with undeclared values + function destructuringAssignOrJsonValue() { + // lookup for the assignment (esnext only) + // if it has semicolons, it is a block, so go parse it as a block + // or it's not a block, but there are assignments, check for undeclared variables + + var block = lookupBlockType(); + if (block.notJson) { + if (!state.option.inESNext() && block.isDestAssign) { + warning("W104", state.tokens.curr, "destructuring assignment"); + } + statements(); + // otherwise parse json value + } else { + state.option.laxbreak = true; + state.jsonMode = true; + jsonValue(); + } + } + + // array comprehension parsing function + // parses and defines the three states of the list comprehension in order + // to avoid defining global variables, but keeping them to the list comprehension scope + // only. The order of the states are as follows: + // * "use" which will be the returned iterative part of the list comprehension + // * "define" which will define the variables local to the list comprehension + // * "filter" which will help filter out values + + var arrayComprehension = function () { + var CompArray = function () { + this.mode = "use"; + this.variables = []; + }; + var _carrays = []; + var _current; + function declare(v) { + var l = _current.variables.filter(function (elt) { + // if it has, change its undef state + if (elt.value === v) { + elt.undef = false; + return v; + } + }).length; + return l !== 0; + } + function use(v) { + var l = _current.variables.filter(function (elt) { + // and if it has been defined + if (elt.value === v && !elt.undef) { + if (elt.unused === true) { + elt.unused = false; + } + return v; + } + }).length; + // otherwise we warn about it + return (l === 0); + } + return {stack: function () { + _current = new CompArray(); + _carrays.push(_current); + }, + unstack: function () { + _current.variables.filter(function (v) { + if (v.unused) + warning("W098", v.token, v.value); + if (v.undef) + isundef(v.funct, "W117", v.token, v.value); + }); + _carrays.splice(-1, 1); + _current = _carrays[_carrays.length - 1]; + }, + setState: function (s) { + if (_.contains(["use", "define", "generate", "filter"], s)) + _current.mode = s; + }, + check: function (v) { + if (!_current) { + return; + } + // When we are in "use" state of the list comp, we enqueue that var + if (_current && _current.mode === "use") { + if (use(v)) { + _current.variables.push({ + funct: funct, + token: state.tokens.curr, + value: v, + undef: true, + unused: false + }); + } + return true; + // When we are in "define" state of the list comp, + } else if (_current && _current.mode === "define") { + // check if the variable has been used previously + if (!declare(v)) { + _current.variables.push({ + funct: funct, + token: state.tokens.curr, + value: v, + undef: false, + unused: true + }); + } + return true; + // When we are in the "generate" state of the list comp, + } else if (_current && _current.mode === "generate") { + isundef(funct, "W117", state.tokens.curr, v); + return true; + // When we are in "filter" state, + } else if (_current && _current.mode === "filter") { + // we check whether current variable has been declared + if (use(v)) { + // if not we warn about it + isundef(funct, "W117", state.tokens.curr, v); + } + return true; + } + return false; + } + }; + }; + + + // Parse JSON + + function jsonValue() { + + function jsonObject() { + var o = {}, t = state.tokens.next; + advance("{"); + if (state.tokens.next.id !== "}") { + for (;;) { + if (state.tokens.next.id === "(end)") { + error("E026", state.tokens.next, t.line); + } else if (state.tokens.next.id === "}") { + warning("W094", state.tokens.curr); + break; + } else if (state.tokens.next.id === ",") { + error("E028", state.tokens.next); + } else if (state.tokens.next.id !== "(string)") { + warning("W095", state.tokens.next, state.tokens.next.value); + } + if (o[state.tokens.next.value] === true) { + warning("W075", state.tokens.next, state.tokens.next.value); + } else if ((state.tokens.next.value === "__proto__" && + !state.option.proto) || (state.tokens.next.value === "__iterator__" && + !state.option.iterator)) { + warning("W096", state.tokens.next, state.tokens.next.value); + } else { + o[state.tokens.next.value] = true; + } + advance(); + advance(":"); + jsonValue(); + if (state.tokens.next.id !== ",") { + break; + } + advance(","); + } + } + advance("}"); + } + + function jsonArray() { + var t = state.tokens.next; + advance("["); + if (state.tokens.next.id !== "]") { + for (;;) { + if (state.tokens.next.id === "(end)") { + error("E027", state.tokens.next, t.line); + } else if (state.tokens.next.id === "]") { + warning("W094", state.tokens.curr); + break; + } else if (state.tokens.next.id === ",") { + error("E028", state.tokens.next); + } + jsonValue(); + if (state.tokens.next.id !== ",") { + break; + } + advance(","); + } + } + advance("]"); + } + + switch (state.tokens.next.id) { + case "{": + jsonObject(); + break; + case "[": + jsonArray(); + break; + case "true": + case "false": + case "null": + case "(number)": + case "(string)": + advance(); + break; + case "-": + advance("-"); + if (state.tokens.curr.character !== state.tokens.next.from) { + warning("W011", state.tokens.curr); + } + adjacent(state.tokens.curr, state.tokens.next); + advance("(number)"); + break; + default: + error("E003", state.tokens.next); + } + } + + var blockScope = function () { + var _current = {}; + var _variables = [_current]; + + function _checkBlockLabels() { + for (var t in _current) { + if (_current[t]["(type)"] === "unused") { + if (state.option.unused) { + var tkn = _current[t]["(token)"]; + var line = tkn.line; + var chr = tkn.character; + warningAt("W098", line, chr, t); + } + } + } + } + + return { + stack: function () { + _current = {}; + _variables.push(_current); + }, + + unstack: function () { + _checkBlockLabels(); + _variables.splice(_variables.length - 1, 1); + _current = _.last(_variables); + }, + + getlabel: function (l) { + for (var i = _variables.length - 1 ; i >= 0; --i) { + if (_.has(_variables[i], l)) { + return _variables[i]; + } + } + }, + + current: { + has: function (t) { + return _.has(_current, t); + }, + add: function (t, type, tok) { + _current[t] = { "(type)" : type, + "(token)": tok }; + } + } + }; + }; + + // The actual JSHINT function itself. + var itself = function (s, o, g) { + var i, k, x; + var optionKeys; + var newOptionObj = {}; + var newIgnoredObj = {}; + + state.reset(); + + if (o && o.scope) { + JSHINT.scope = o.scope; + } else { + JSHINT.errors = []; + JSHINT.undefs = []; + JSHINT.internals = []; + JSHINT.blacklist = {}; + JSHINT.scope = "(main)"; + } + + predefined = Object.create(null); + combine(predefined, vars.ecmaIdentifiers); + combine(predefined, vars.reservedVars); + + combine(predefined, g || {}); + + declared = Object.create(null); + exported = Object.create(null); + + function each(obj, cb) { + if (!obj) + return; + + if (!Array.isArray(obj) && typeof obj === "object") + obj = Object.keys(obj); + + obj.forEach(cb); + } + + if (o) { + each(o.predef || null, function (item) { + var slice, prop; + + if (item[0] === "-") { + slice = item.slice(1); + JSHINT.blacklist[slice] = slice; + } else { + prop = Object.getOwnPropertyDescriptor(o.predef, item); + predefined[item] = prop ? prop.value : false; + } + }); + + each(o.exported || null, function (item) { + exported[item] = true; + }); + + delete o.predef; + delete o.exported; + + optionKeys = Object.keys(o); + for (x = 0; x < optionKeys.length; x++) { + if (/^-W\d{3}$/g.test(optionKeys[x])) { + newIgnoredObj[optionKeys[x].slice(1)] = true; + } else { + newOptionObj[optionKeys[x]] = o[optionKeys[x]]; + + if (optionKeys[x] === "newcap" && o[optionKeys[x]] === false) + newOptionObj["(explicitNewcap)"] = true; + + if (optionKeys[x] === "indent") + newOptionObj["(explicitIndent)"] = o[optionKeys[x]] === false ? false : true; + } + } + } + + state.option = newOptionObj; + state.ignored = newIgnoredObj; + + state.option.indent = state.option.indent || 4; + state.option.maxerr = state.option.maxerr || 50; + + indent = 1; + global = Object.create(predefined); + scope = global; + funct = { + "(global)": true, + "(name)": "(global)", + "(scope)": scope, + "(breakage)": 0, + "(loopage)": 0, + "(tokens)": {}, + "(metrics)": createMetrics(state.tokens.next), + "(blockscope)": blockScope(), + "(comparray)": arrayComprehension() + }; + functions = [funct]; + urls = []; + stack = null; + member = {}; + membersOnly = null; + implied = {}; + inblock = false; + lookahead = []; + warnings = 0; + unuseds = []; + + if (!isString(s) && !Array.isArray(s)) { + errorAt("E004", 0); + return false; + } + + api = { + get isJSON() { + return state.jsonMode; + }, + + getOption: function (name) { + return state.option[name] || null; + }, + + getCache: function (name) { + return state.cache[name]; + }, + + setCache: function (name, value) { + state.cache[name] = value; + }, + + warn: function (code, data) { + warningAt.apply(null, [ code, data.line, data.char ].concat(data.data)); + }, + + on: function (names, listener) { + names.split(" ").forEach(function (name) { + emitter.on(name, listener); + }.bind(this)); + } + }; + + emitter.removeAllListeners(); + (extraModules || []).forEach(function (func) { + func(api); + }); + + state.tokens.prev = state.tokens.curr = state.tokens.next = state.syntax["(begin)"]; + + lex = new Lexer(s); + + lex.on("warning", function (ev) { + warningAt.apply(null, [ ev.code, ev.line, ev.character].concat(ev.data)); + }); + + lex.on("error", function (ev) { + errorAt.apply(null, [ ev.code, ev.line, ev.character ].concat(ev.data)); + }); + + lex.on("fatal", function (ev) { + quit("E041", ev.line, ev.from); + }); + + lex.on("Identifier", function (ev) { + emitter.emit("Identifier", ev); + }); + + lex.on("String", function (ev) { + emitter.emit("String", ev); + }); + + lex.on("Number", function (ev) { + emitter.emit("Number", ev); + }); + + lex.start(); + + // Check options + for (var name in o) { + if (_.has(o, name)) { + checkOption(name, state.tokens.curr); + } + } + + assume(); + + // combine the passed globals after we've assumed all our options + combine(predefined, g || {}); + + //reset values + comma.first = true; + + try { + advance(); + switch (state.tokens.next.id) { + case "{": + case "[": + destructuringAssignOrJsonValue(); + break; + default: + directives(); + + if (state.directive["use strict"]) { + if (!state.option.globalstrict && !(state.option.node || state.option.phantom)) { + warning("W097", state.tokens.prev); + } + } + + statements(); + } + advance((state.tokens.next && state.tokens.next.value !== ".") ? "(end)" : undefined); + funct["(blockscope)"].unstack(); + + var markDefined = function (name, context) { + do { + if (typeof context[name] === "string") { + // JSHINT marks unused variables as 'unused' and + // unused function declaration as 'unction'. This + // code changes such instances back 'var' and + // 'closure' so that the code in JSHINT.data() + // doesn't think they're unused. + + if (context[name] === "unused") + context[name] = "var"; + else if (context[name] === "unction") + context[name] = "closure"; + + return true; + } + + context = context["(context)"]; + } while (context); + + return false; + }; + + var clearImplied = function (name, line) { + if (!implied[name]) + return; + + var newImplied = []; + for (var i = 0; i < implied[name].length; i += 1) { + if (implied[name][i] !== line) + newImplied.push(implied[name][i]); + } + + if (newImplied.length === 0) + delete implied[name]; + else + implied[name] = newImplied; + }; + + var warnUnused = function (name, tkn, type, unused_opt) { + var line = tkn.line; + var chr = tkn.character; + + if (unused_opt === undefined) { + unused_opt = state.option.unused; + } + + if (unused_opt === true) { + unused_opt = "last-param"; + } + + var warnable_types = { + "vars": ["var"], + "last-param": ["var", "param"], + "strict": ["var", "param", "last-param"] + }; + + if (unused_opt) { + if (warnable_types[unused_opt] && warnable_types[unused_opt].indexOf(type) !== -1) { + warningAt("W098", line, chr, name); + } + } + + unuseds.push({ + name: name, + line: line, + character: chr + }); + }; + + var checkUnused = function (func, key) { + var type = func[key]; + var tkn = func["(tokens)"][key]; + + if (key.charAt(0) === "(") + return; + + if (type !== "unused" && type !== "unction") + return; + + // Params are checked separately from other variables. + if (func["(params)"] && func["(params)"].indexOf(key) !== -1) + return; + + // Variable is in global scope and defined as exported. + if (func["(global)"] && _.has(exported, key)) { + return; + } + + warnUnused(key, tkn, "var"); + }; + + // Check queued 'x is not defined' instances to see if they're still undefined. + for (i = 0; i < JSHINT.undefs.length; i += 1) { + k = JSHINT.undefs[i].slice(0); + + if (markDefined(k[2].value, k[0])) { + clearImplied(k[2].value, k[2].line); + } else if (state.option.undef) { + warning.apply(warning, k.slice(1)); + } + } + + functions.forEach(function (func) { + if (func["(unusedOption)"] === false) { + return; + } + + for (var key in func) { + if (_.has(func, key)) { + checkUnused(func, key); + } + } + + if (!func["(params)"]) + return; + + var params = func["(params)"].slice(); + var param = params.pop(); + var type, unused_opt; + + while (param) { + type = func[param]; + unused_opt = func["(unusedOption)"] || state.option.unused; + unused_opt = unused_opt === true ? "last-param" : unused_opt; + + // 'undefined' is a special case for (function (window, undefined) { ... })(); + // patterns. + + if (param === "undefined") + return; + + if (type === "unused" || type === "unction") { + warnUnused(param, func["(tokens)"][param], "param", func["(unusedOption)"]); + } else if (unused_opt === "last-param") { + return; + } + + param = params.pop(); + } + }); + + for (var key in declared) { + if (_.has(declared, key) && !_.has(global, key)) { + warnUnused(key, declared[key], "var"); + } + } + + } catch (err) { + if (err && err.name === "JSHintError") { + var nt = state.tokens.next || {}; + JSHINT.errors.push({ + scope : "(main)", + raw : err.raw, + code : err.code, + reason : err.message, + line : err.line || nt.line, + character : err.character || nt.from + }, null); + } else { + throw err; + } + } + + // Loop over the listed "internals", and check them as well. + + if (JSHINT.scope === "(main)") { + o = o || {}; + + for (i = 0; i < JSHINT.internals.length; i += 1) { + k = JSHINT.internals[i]; + o.scope = k.elem; + itself(k.value, o, g); + } + } + + return JSHINT.errors.length === 0; + }; + + // Modules. + itself.addModule = function (func) { + extraModules.push(func); + }; + + itself.addModule(style.register); + + // Data summary. + itself.data = function () { + var data = { + functions: [], + options: state.option + }; + var implieds = []; + var members = []; + var fu, f, i, j, n, globals; + + if (itself.errors.length) { + data.errors = itself.errors; + } + + if (state.jsonMode) { + data.json = true; + } + + for (n in implied) { + if (_.has(implied, n)) { + implieds.push({ + name: n, + line: implied[n] + }); + } + } + + if (implieds.length > 0) { + data.implieds = implieds; + } + + if (urls.length > 0) { + data.urls = urls; + } + + globals = Object.keys(scope); + if (globals.length > 0) { + data.globals = globals; + } + + for (i = 1; i < functions.length; i += 1) { + f = functions[i]; + fu = {}; + + for (j = 0; j < functionicity.length; j += 1) { + fu[functionicity[j]] = []; + } + + for (j = 0; j < functionicity.length; j += 1) { + if (fu[functionicity[j]].length === 0) { + delete fu[functionicity[j]]; + } + } + + fu.name = f["(name)"]; + fu.param = f["(params)"]; + fu.line = f["(line)"]; + fu.character = f["(character)"]; + fu.last = f["(last)"]; + fu.lastcharacter = f["(lastcharacter)"]; + data.functions.push(fu); + } + + if (unuseds.length > 0) { + data.unused = unuseds; + } + + members = []; + for (n in member) { + if (typeof member[n] === "number") { + data.member = member; + break; + } + } + + return data; + }; + + itself.jshint = itself; + + return itself; +}()); + +// Make JSHINT a Node module, if possible. +if (typeof exports === "object" && exports) { + exports.JSHINT = JSHINT; +} + +})() +},{"events":2,"./vars.js":3,"./messages.js":7,"./lex.js":9,"./reg.js":4,"./state.js":5,"./style.js":6,"console-browserify":10,"underscore":8}],8:[function(require,module,exports){ +(function(){// Underscore.js 1.4.4 +// http://underscorejs.org +// (c) 2009-2013 Jeremy Ashkenas, DocumentCloud Inc. +// Underscore may be freely distributed under the MIT license. + +(function() { + + // Baseline setup + // -------------- + + // Establish the root object, `window` in the browser, or `global` on the server. + var root = this; + + // Save the previous value of the `_` variable. + var previousUnderscore = root._; + + // Establish the object that gets returned to break out of a loop iteration. + var breaker = {}; + + // Save bytes in the minified (but not gzipped) version: + var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype; + + // Create quick reference variables for speed access to core prototypes. + var push = ArrayProto.push, + slice = ArrayProto.slice, + concat = ArrayProto.concat, + toString = ObjProto.toString, + hasOwnProperty = ObjProto.hasOwnProperty; + + // All **ECMAScript 5** native function implementations that we hope to use + // are declared here. + var + nativeForEach = ArrayProto.forEach, + nativeMap = ArrayProto.map, + nativeReduce = ArrayProto.reduce, + nativeReduceRight = ArrayProto.reduceRight, + nativeFilter = ArrayProto.filter, + nativeEvery = ArrayProto.every, + nativeSome = ArrayProto.some, + nativeIndexOf = ArrayProto.indexOf, + nativeLastIndexOf = ArrayProto.lastIndexOf, + nativeIsArray = Array.isArray, + nativeKeys = Object.keys, + nativeBind = FuncProto.bind; + + // Create a safe reference to the Underscore object for use below. + var _ = function(obj) { + if (obj instanceof _) return obj; + if (!(this instanceof _)) return new _(obj); + this._wrapped = obj; + }; + + // Export the Underscore object for **Node.js**, with + // backwards-compatibility for the old `require()` API. If we're in + // the browser, add `_` as a global object via a string identifier, + // for Closure Compiler "advanced" mode. + if (typeof exports !== 'undefined') { + if (typeof module !== 'undefined' && module.exports) { + exports = module.exports = _; + } + exports._ = _; + } else { + root._ = _; + } + + // Current version. + _.VERSION = '1.4.4'; + + // Collection Functions + // -------------------- + + // The cornerstone, an `each` implementation, aka `forEach`. + // Handles objects with the built-in `forEach`, arrays, and raw objects. + // Delegates to **ECMAScript 5**'s native `forEach` if available. + var each = _.each = _.forEach = function(obj, iterator, context) { + if (obj == null) return; + if (nativeForEach && obj.forEach === nativeForEach) { + obj.forEach(iterator, context); + } else if (obj.length === +obj.length) { + for (var i = 0, l = obj.length; i < l; i++) { + if (iterator.call(context, obj[i], i, obj) === breaker) return; + } + } else { + for (var key in obj) { + if (_.has(obj, key)) { + if (iterator.call(context, obj[key], key, obj) === breaker) return; + } + } + } + }; + + // Return the results of applying the iterator to each element. + // Delegates to **ECMAScript 5**'s native `map` if available. + _.map = _.collect = function(obj, iterator, context) { + var results = []; + if (obj == null) return results; + if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context); + each(obj, function(value, index, list) { + results[results.length] = iterator.call(context, value, index, list); + }); + return results; + }; + + var reduceError = 'Reduce of empty array with no initial value'; + + // **Reduce** builds up a single result from a list of values, aka `inject`, + // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available. + _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) { + var initial = arguments.length > 2; + if (obj == null) obj = []; + if (nativeReduce && obj.reduce === nativeReduce) { + if (context) iterator = _.bind(iterator, context); + return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator); + } + each(obj, function(value, index, list) { + if (!initial) { + memo = value; + initial = true; + } else { + memo = iterator.call(context, memo, value, index, list); + } + }); + if (!initial) throw new TypeError(reduceError); + return memo; + }; + + // The right-associative version of reduce, also known as `foldr`. + // Delegates to **ECMAScript 5**'s native `reduceRight` if available. + _.reduceRight = _.foldr = function(obj, iterator, memo, context) { + var initial = arguments.length > 2; + if (obj == null) obj = []; + if (nativeReduceRight && obj.reduceRight === nativeReduceRight) { + if (context) iterator = _.bind(iterator, context); + return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator); + } + var length = obj.length; + if (length !== +length) { + var keys = _.keys(obj); + length = keys.length; + } + each(obj, function(value, index, list) { + index = keys ? keys[--length] : --length; + if (!initial) { + memo = obj[index]; + initial = true; + } else { + memo = iterator.call(context, memo, obj[index], index, list); + } + }); + if (!initial) throw new TypeError(reduceError); + return memo; + }; + + // Return the first value which passes a truth test. Aliased as `detect`. + _.find = _.detect = function(obj, iterator, context) { + var result; + any(obj, function(value, index, list) { + if (iterator.call(context, value, index, list)) { + result = value; + return true; + } + }); + return result; + }; + + // Return all the elements that pass a truth test. + // Delegates to **ECMAScript 5**'s native `filter` if available. + // Aliased as `select`. + _.filter = _.select = function(obj, iterator, context) { + var results = []; + if (obj == null) return results; + if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context); + each(obj, function(value, index, list) { + if (iterator.call(context, value, index, list)) results[results.length] = value; + }); + return results; + }; + + // Return all the elements for which a truth test fails. + _.reject = function(obj, iterator, context) { + return _.filter(obj, function(value, index, list) { + return !iterator.call(context, value, index, list); + }, context); + }; + + // Determine whether all of the elements match a truth test. + // Delegates to **ECMAScript 5**'s native `every` if available. + // Aliased as `all`. + _.every = _.all = function(obj, iterator, context) { + iterator || (iterator = _.identity); + var result = true; + if (obj == null) return result; + if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context); + each(obj, function(value, index, list) { + if (!(result = result && iterator.call(context, value, index, list))) return breaker; + }); + return !!result; + }; + + // Determine if at least one element in the object matches a truth test. + // Delegates to **ECMAScript 5**'s native `some` if available. + // Aliased as `any`. + var any = _.some = _.any = function(obj, iterator, context) { + iterator || (iterator = _.identity); + var result = false; + if (obj == null) return result; + if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context); + each(obj, function(value, index, list) { + if (result || (result = iterator.call(context, value, index, list))) return breaker; + }); + return !!result; + }; + + // Determine if the array or object contains a given value (using `===`). + // Aliased as `include`. + _.contains = _.include = function(obj, target) { + if (obj == null) return false; + if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1; + return any(obj, function(value) { + return value === target; + }); + }; + + // Invoke a method (with arguments) on every item in a collection. + _.invoke = function(obj, method) { + var args = slice.call(arguments, 2); + var isFunc = _.isFunction(method); + return _.map(obj, function(value) { + return (isFunc ? method : value[method]).apply(value, args); + }); + }; + + // Convenience version of a common use case of `map`: fetching a property. + _.pluck = function(obj, key) { + return _.map(obj, function(value){ return value[key]; }); + }; + + // Convenience version of a common use case of `filter`: selecting only objects + // containing specific `key:value` pairs. + _.where = function(obj, attrs, first) { + if (_.isEmpty(attrs)) return first ? null : []; + return _[first ? 'find' : 'filter'](obj, function(value) { + for (var key in attrs) { + if (attrs[key] !== value[key]) return false; + } + return true; + }); + }; + + // Convenience version of a common use case of `find`: getting the first object + // containing specific `key:value` pairs. + _.findWhere = function(obj, attrs) { + return _.where(obj, attrs, true); + }; + + // Return the maximum element or (element-based computation). + // Can't optimize arrays of integers longer than 65,535 elements. + // See: https://bugs.webkit.org/show_bug.cgi?id=80797 + _.max = function(obj, iterator, context) { + if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) { + return Math.max.apply(Math, obj); + } + if (!iterator && _.isEmpty(obj)) return -Infinity; + var result = {computed : -Infinity, value: -Infinity}; + each(obj, function(value, index, list) { + var computed = iterator ? iterator.call(context, value, index, list) : value; + computed >= result.computed && (result = {value : value, computed : computed}); + }); + return result.value; + }; + + // Return the minimum element (or element-based computation). + _.min = function(obj, iterator, context) { + if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) { + return Math.min.apply(Math, obj); + } + if (!iterator && _.isEmpty(obj)) return Infinity; + var result = {computed : Infinity, value: Infinity}; + each(obj, function(value, index, list) { + var computed = iterator ? iterator.call(context, value, index, list) : value; + computed < result.computed && (result = {value : value, computed : computed}); + }); + return result.value; + }; + + // Shuffle an array. + _.shuffle = function(obj) { + var rand; + var index = 0; + var shuffled = []; + each(obj, function(value) { + rand = _.random(index++); + shuffled[index - 1] = shuffled[rand]; + shuffled[rand] = value; + }); + return shuffled; + }; + + // An internal function to generate lookup iterators. + var lookupIterator = function(value) { + return _.isFunction(value) ? value : function(obj){ return obj[value]; }; + }; + + // Sort the object's values by a criterion produced by an iterator. + _.sortBy = function(obj, value, context) { + var iterator = lookupIterator(value); + return _.pluck(_.map(obj, function(value, index, list) { + return { + value : value, + index : index, + criteria : iterator.call(context, value, index, list) + }; + }).sort(function(left, right) { + var a = left.criteria; + var b = right.criteria; + if (a !== b) { + if (a > b || a === void 0) return 1; + if (a < b || b === void 0) return -1; + } + return left.index < right.index ? -1 : 1; + }), 'value'); + }; + + // An internal function used for aggregate "group by" operations. + var group = function(obj, value, context, behavior) { + var result = {}; + var iterator = lookupIterator(value || _.identity); + each(obj, function(value, index) { + var key = iterator.call(context, value, index, obj); + behavior(result, key, value); + }); + return result; + }; + + // Groups the object's values by a criterion. Pass either a string attribute + // to group by, or a function that returns the criterion. + _.groupBy = function(obj, value, context) { + return group(obj, value, context, function(result, key, value) { + (_.has(result, key) ? result[key] : (result[key] = [])).push(value); + }); + }; + + // Counts instances of an object that group by a certain criterion. Pass + // either a string attribute to count by, or a function that returns the + // criterion. + _.countBy = function(obj, value, context) { + return group(obj, value, context, function(result, key) { + if (!_.has(result, key)) result[key] = 0; + result[key]++; + }); + }; + + // Use a comparator function to figure out the smallest index at which + // an object should be inserted so as to maintain order. Uses binary search. + _.sortedIndex = function(array, obj, iterator, context) { + iterator = iterator == null ? _.identity : lookupIterator(iterator); + var value = iterator.call(context, obj); + var low = 0, high = array.length; + while (low < high) { + var mid = (low + high) >>> 1; + iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid; + } + return low; + }; + + // Safely convert anything iterable into a real, live array. + _.toArray = function(obj) { + if (!obj) return []; + if (_.isArray(obj)) return slice.call(obj); + if (obj.length === +obj.length) return _.map(obj, _.identity); + return _.values(obj); + }; + + // Return the number of elements in an object. + _.size = function(obj) { + if (obj == null) return 0; + return (obj.length === +obj.length) ? obj.length : _.keys(obj).length; + }; + + // Array Functions + // --------------- + + // Get the first element of an array. Passing **n** will return the first N + // values in the array. Aliased as `head` and `take`. The **guard** check + // allows it to work with `_.map`. + _.first = _.head = _.take = function(array, n, guard) { + if (array == null) return void 0; + return (n != null) && !guard ? slice.call(array, 0, n) : array[0]; + }; + + // Returns everything but the last entry of the array. Especially useful on + // the arguments object. Passing **n** will return all the values in + // the array, excluding the last N. The **guard** check allows it to work with + // `_.map`. + _.initial = function(array, n, guard) { + return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n)); + }; + + // Get the last element of an array. Passing **n** will return the last N + // values in the array. The **guard** check allows it to work with `_.map`. + _.last = function(array, n, guard) { + if (array == null) return void 0; + if ((n != null) && !guard) { + return slice.call(array, Math.max(array.length - n, 0)); + } else { + return array[array.length - 1]; + } + }; + + // Returns everything but the first entry of the array. Aliased as `tail` and `drop`. + // Especially useful on the arguments object. Passing an **n** will return + // the rest N values in the array. The **guard** + // check allows it to work with `_.map`. + _.rest = _.tail = _.drop = function(array, n, guard) { + return slice.call(array, (n == null) || guard ? 1 : n); + }; + + // Trim out all falsy values from an array. + _.compact = function(array) { + return _.filter(array, _.identity); + }; + + // Internal implementation of a recursive `flatten` function. + var flatten = function(input, shallow, output) { + each(input, function(value) { + if (_.isArray(value)) { + shallow ? push.apply(output, value) : flatten(value, shallow, output); + } else { + output.push(value); + } + }); + return output; + }; + + // Return a completely flattened version of an array. + _.flatten = function(array, shallow) { + return flatten(array, shallow, []); + }; + + // Return a version of the array that does not contain the specified value(s). + _.without = function(array) { + return _.difference(array, slice.call(arguments, 1)); + }; + + // Produce a duplicate-free version of the array. If the array has already + // been sorted, you have the option of using a faster algorithm. + // Aliased as `unique`. + _.uniq = _.unique = function(array, isSorted, iterator, context) { + if (_.isFunction(isSorted)) { + context = iterator; + iterator = isSorted; + isSorted = false; + } + var initial = iterator ? _.map(array, iterator, context) : array; + var results = []; + var seen = []; + each(initial, function(value, index) { + if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) { + seen.push(value); + results.push(array[index]); + } + }); + return results; + }; + + // Produce an array that contains the union: each distinct element from all of + // the passed-in arrays. + _.union = function() { + return _.uniq(concat.apply(ArrayProto, arguments)); + }; + + // Produce an array that contains every item shared between all the + // passed-in arrays. + _.intersection = function(array) { + var rest = slice.call(arguments, 1); + return _.filter(_.uniq(array), function(item) { + return _.every(rest, function(other) { + return _.indexOf(other, item) >= 0; + }); + }); + }; + + // Take the difference between one array and a number of other arrays. + // Only the elements present in just the first array will remain. + _.difference = function(array) { + var rest = concat.apply(ArrayProto, slice.call(arguments, 1)); + return _.filter(array, function(value){ return !_.contains(rest, value); }); + }; + + // Zip together multiple lists into a single array -- elements that share + // an index go together. + _.zip = function() { + var args = slice.call(arguments); + var length = _.max(_.pluck(args, 'length')); + var results = new Array(length); + for (var i = 0; i < length; i++) { + results[i] = _.pluck(args, "" + i); + } + return results; + }; + + // Converts lists into objects. Pass either a single array of `[key, value]` + // pairs, or two parallel arrays of the same length -- one of keys, and one of + // the corresponding values. + _.object = function(list, values) { + if (list == null) return {}; + var result = {}; + for (var i = 0, l = list.length; i < l; i++) { + if (values) { + result[list[i]] = values[i]; + } else { + result[list[i][0]] = list[i][1]; + } + } + return result; + }; + + // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**), + // we need this function. Return the position of the first occurrence of an + // item in an array, or -1 if the item is not included in the array. + // Delegates to **ECMAScript 5**'s native `indexOf` if available. + // If the array is large and already in sort order, pass `true` + // for **isSorted** to use binary search. + _.indexOf = function(array, item, isSorted) { + if (array == null) return -1; + var i = 0, l = array.length; + if (isSorted) { + if (typeof isSorted == 'number') { + i = (isSorted < 0 ? Math.max(0, l + isSorted) : isSorted); + } else { + i = _.sortedIndex(array, item); + return array[i] === item ? i : -1; + } + } + if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted); + for (; i < l; i++) if (array[i] === item) return i; + return -1; + }; + + // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available. + _.lastIndexOf = function(array, item, from) { + if (array == null) return -1; + var hasIndex = from != null; + if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) { + return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item); + } + var i = (hasIndex ? from : array.length); + while (i--) if (array[i] === item) return i; + return -1; + }; + + // Generate an integer Array containing an arithmetic progression. A port of + // the native Python `range()` function. See + // [the Python documentation](http://docs.python.org/library/functions.html#range). + _.range = function(start, stop, step) { + if (arguments.length <= 1) { + stop = start || 0; + start = 0; + } + step = arguments[2] || 1; + + var len = Math.max(Math.ceil((stop - start) / step), 0); + var idx = 0; + var range = new Array(len); + + while(idx < len) { + range[idx++] = start; + start += step; + } + + return range; + }; + + // Function (ahem) Functions + // ------------------ + + // Create a function bound to a given object (assigning `this`, and arguments, + // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if + // available. + _.bind = function(func, context) { + if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1)); + var args = slice.call(arguments, 2); + return function() { + return func.apply(context, args.concat(slice.call(arguments))); + }; + }; + + // Partially apply a function by creating a version that has had some of its + // arguments pre-filled, without changing its dynamic `this` context. + _.partial = function(func) { + var args = slice.call(arguments, 1); + return function() { + return func.apply(this, args.concat(slice.call(arguments))); + }; + }; + + // Bind all of an object's methods to that object. Useful for ensuring that + // all callbacks defined on an object belong to it. + _.bindAll = function(obj) { + var funcs = slice.call(arguments, 1); + if (funcs.length === 0) funcs = _.functions(obj); + each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); }); + return obj; + }; + + // Memoize an expensive function by storing its results. + _.memoize = function(func, hasher) { + var memo = {}; + hasher || (hasher = _.identity); + return function() { + var key = hasher.apply(this, arguments); + return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments)); + }; + }; + + // Delays a function for the given number of milliseconds, and then calls + // it with the arguments supplied. + _.delay = function(func, wait) { + var args = slice.call(arguments, 2); + return setTimeout(function(){ return func.apply(null, args); }, wait); + }; + + // Defers a function, scheduling it to run after the current call stack has + // cleared. + _.defer = function(func) { + return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1))); + }; + + // Returns a function, that, when invoked, will only be triggered at most once + // during a given window of time. + _.throttle = function(func, wait) { + var context, args, timeout, result; + var previous = 0; + var later = function() { + previous = new Date; + timeout = null; + result = func.apply(context, args); + }; + return function() { + var now = new Date; + var remaining = wait - (now - previous); + context = this; + args = arguments; + if (remaining <= 0) { + clearTimeout(timeout); + timeout = null; + previous = now; + result = func.apply(context, args); + } else if (!timeout) { + timeout = setTimeout(later, remaining); + } + return result; + }; + }; + + // Returns a function, that, as long as it continues to be invoked, will not + // be triggered. The function will be called after it stops being called for + // N milliseconds. If `immediate` is passed, trigger the function on the + // leading edge, instead of the trailing. + _.debounce = function(func, wait, immediate) { + var timeout, result; + return function() { + var context = this, args = arguments; + var later = function() { + timeout = null; + if (!immediate) result = func.apply(context, args); + }; + var callNow = immediate && !timeout; + clearTimeout(timeout); + timeout = setTimeout(later, wait); + if (callNow) result = func.apply(context, args); + return result; + }; + }; + + // Returns a function that will be executed at most one time, no matter how + // often you call it. Useful for lazy initialization. + _.once = function(func) { + var ran = false, memo; + return function() { + if (ran) return memo; + ran = true; + memo = func.apply(this, arguments); + func = null; + return memo; + }; + }; + + // Returns the first function passed as an argument to the second, + // allowing you to adjust arguments, run code before and after, and + // conditionally execute the original function. + _.wrap = function(func, wrapper) { + return function() { + var args = [func]; + push.apply(args, arguments); + return wrapper.apply(this, args); + }; + }; + + // Returns a function that is the composition of a list of functions, each + // consuming the return value of the function that follows. + _.compose = function() { + var funcs = arguments; + return function() { + var args = arguments; + for (var i = funcs.length - 1; i >= 0; i--) { + args = [funcs[i].apply(this, args)]; + } + return args[0]; + }; + }; + + // Returns a function that will only be executed after being called N times. + _.after = function(times, func) { + if (times <= 0) return func(); + return function() { + if (--times < 1) { + return func.apply(this, arguments); + } + }; + }; + + // Object Functions + // ---------------- + + // Retrieve the names of an object's properties. + // Delegates to **ECMAScript 5**'s native `Object.keys` + _.keys = nativeKeys || function(obj) { + if (obj !== Object(obj)) throw new TypeError('Invalid object'); + var keys = []; + for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key; + return keys; + }; + + // Retrieve the values of an object's properties. + _.values = function(obj) { + var values = []; + for (var key in obj) if (_.has(obj, key)) values.push(obj[key]); + return values; + }; + + // Convert an object into a list of `[key, value]` pairs. + _.pairs = function(obj) { + var pairs = []; + for (var key in obj) if (_.has(obj, key)) pairs.push([key, obj[key]]); + return pairs; + }; + + // Invert the keys and values of an object. The values must be serializable. + _.invert = function(obj) { + var result = {}; + for (var key in obj) if (_.has(obj, key)) result[obj[key]] = key; + return result; + }; + + // Return a sorted list of the function names available on the object. + // Aliased as `methods` + _.functions = _.methods = function(obj) { + var names = []; + for (var key in obj) { + if (_.isFunction(obj[key])) names.push(key); + } + return names.sort(); + }; + + // Extend a given object with all the properties in passed-in object(s). + _.extend = function(obj) { + each(slice.call(arguments, 1), function(source) { + if (source) { + for (var prop in source) { + obj[prop] = source[prop]; + } + } + }); + return obj; + }; + + // Return a copy of the object only containing the whitelisted properties. + _.pick = function(obj) { + var copy = {}; + var keys = concat.apply(ArrayProto, slice.call(arguments, 1)); + each(keys, function(key) { + if (key in obj) copy[key] = obj[key]; + }); + return copy; + }; + + // Return a copy of the object without the blacklisted properties. + _.omit = function(obj) { + var copy = {}; + var keys = concat.apply(ArrayProto, slice.call(arguments, 1)); + for (var key in obj) { + if (!_.contains(keys, key)) copy[key] = obj[key]; + } + return copy; + }; + + // Fill in a given object with default properties. + _.defaults = function(obj) { + each(slice.call(arguments, 1), function(source) { + if (source) { + for (var prop in source) { + if (obj[prop] == null) obj[prop] = source[prop]; + } + } + }); + return obj; + }; + + // Create a (shallow-cloned) duplicate of an object. + _.clone = function(obj) { + if (!_.isObject(obj)) return obj; + return _.isArray(obj) ? obj.slice() : _.extend({}, obj); + }; + + // Invokes interceptor with the obj, and then returns obj. + // The primary purpose of this method is to "tap into" a method chain, in + // order to perform operations on intermediate results within the chain. + _.tap = function(obj, interceptor) { + interceptor(obj); + return obj; + }; + + // Internal recursive comparison function for `isEqual`. + var eq = function(a, b, aStack, bStack) { + // Identical objects are equal. `0 === -0`, but they aren't identical. + // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal. + if (a === b) return a !== 0 || 1 / a == 1 / b; + // A strict comparison is necessary because `null == undefined`. + if (a == null || b == null) return a === b; + // Unwrap any wrapped objects. + if (a instanceof _) a = a._wrapped; + if (b instanceof _) b = b._wrapped; + // Compare `[[Class]]` names. + var className = toString.call(a); + if (className != toString.call(b)) return false; + switch (className) { + // Strings, numbers, dates, and booleans are compared by value. + case '[object String]': + // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is + // equivalent to `new String("5")`. + return a == String(b); + case '[object Number]': + // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for + // other numeric values. + return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b); + case '[object Date]': + case '[object Boolean]': + // Coerce dates and booleans to numeric primitive values. Dates are compared by their + // millisecond representations. Note that invalid dates with millisecond representations + // of `NaN` are not equivalent. + return +a == +b; + // RegExps are compared by their source patterns and flags. + case '[object RegExp]': + return a.source == b.source && + a.global == b.global && + a.multiline == b.multiline && + a.ignoreCase == b.ignoreCase; + } + if (typeof a != 'object' || typeof b != 'object') return false; + // Assume equality for cyclic structures. The algorithm for detecting cyclic + // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`. + var length = aStack.length; + while (length--) { + // Linear search. Performance is inversely proportional to the number of + // unique nested structures. + if (aStack[length] == a) return bStack[length] == b; + } + // Add the first object to the stack of traversed objects. + aStack.push(a); + bStack.push(b); + var size = 0, result = true; + // Recursively compare objects and arrays. + if (className == '[object Array]') { + // Compare array lengths to determine if a deep comparison is necessary. + size = a.length; + result = size == b.length; + if (result) { + // Deep compare the contents, ignoring non-numeric properties. + while (size--) { + if (!(result = eq(a[size], b[size], aStack, bStack))) break; + } + } + } else { + // Objects with different constructors are not equivalent, but `Object`s + // from different frames are. + var aCtor = a.constructor, bCtor = b.constructor; + if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) && + _.isFunction(bCtor) && (bCtor instanceof bCtor))) { + return false; + } + // Deep compare objects. + for (var key in a) { + if (_.has(a, key)) { + // Count the expected number of properties. + size++; + // Deep compare each member. + if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break; + } + } + // Ensure that both objects contain the same number of properties. + if (result) { + for (key in b) { + if (_.has(b, key) && !(size--)) break; + } + result = !size; + } + } + // Remove the first object from the stack of traversed objects. + aStack.pop(); + bStack.pop(); + return result; + }; + + // Perform a deep comparison to check if two objects are equal. + _.isEqual = function(a, b) { + return eq(a, b, [], []); + }; + + // Is a given array, string, or object empty? + // An "empty" object has no enumerable own-properties. + _.isEmpty = function(obj) { + if (obj == null) return true; + if (_.isArray(obj) || _.isString(obj)) return obj.length === 0; + for (var key in obj) if (_.has(obj, key)) return false; + return true; + }; + + // Is a given value a DOM element? + _.isElement = function(obj) { + return !!(obj && obj.nodeType === 1); + }; + + // Is a given value an array? + // Delegates to ECMA5's native Array.isArray + _.isArray = nativeIsArray || function(obj) { + return toString.call(obj) == '[object Array]'; + }; + + // Is a given variable an object? + _.isObject = function(obj) { + return obj === Object(obj); + }; + + // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp. + each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) { + _['is' + name] = function(obj) { + return toString.call(obj) == '[object ' + name + ']'; + }; + }); + + // Define a fallback version of the method in browsers (ahem, IE), where + // there isn't any inspectable "Arguments" type. + if (!_.isArguments(arguments)) { + _.isArguments = function(obj) { + return !!(obj && _.has(obj, 'callee')); + }; + } + + // Optimize `isFunction` if appropriate. + if (typeof (/./) !== 'function') { + _.isFunction = function(obj) { + return typeof obj === 'function'; + }; + } + + // Is a given object a finite number? + _.isFinite = function(obj) { + return isFinite(obj) && !isNaN(parseFloat(obj)); + }; + + // Is the given value `NaN`? (NaN is the only number which does not equal itself). + _.isNaN = function(obj) { + return _.isNumber(obj) && obj != +obj; + }; + + // Is a given value a boolean? + _.isBoolean = function(obj) { + return obj === true || obj === false || toString.call(obj) == '[object Boolean]'; + }; + + // Is a given value equal to null? + _.isNull = function(obj) { + return obj === null; + }; + + // Is a given variable undefined? + _.isUndefined = function(obj) { + return obj === void 0; + }; + + // Shortcut function for checking if an object has a given property directly + // on itself (in other words, not on a prototype). + _.has = function(obj, key) { + return hasOwnProperty.call(obj, key); + }; + + // Utility Functions + // ----------------- + + // Run Underscore.js in *noConflict* mode, returning the `_` variable to its + // previous owner. Returns a reference to the Underscore object. + _.noConflict = function() { + root._ = previousUnderscore; + return this; + }; + + // Keep the identity function around for default iterators. + _.identity = function(value) { + return value; + }; + + // Run a function **n** times. + _.times = function(n, iterator, context) { + var accum = Array(n); + for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i); + return accum; + }; + + // Return a random integer between min and max (inclusive). + _.random = function(min, max) { + if (max == null) { + max = min; + min = 0; + } + return min + Math.floor(Math.random() * (max - min + 1)); + }; + + // List of HTML entities for escaping. + var entityMap = { + escape: { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''', + '/': '/' + } + }; + entityMap.unescape = _.invert(entityMap.escape); + + // Regexes containing the keys and values listed immediately above. + var entityRegexes = { + escape: new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'), + unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g') + }; + + // Functions for escaping and unescaping strings to/from HTML interpolation. + _.each(['escape', 'unescape'], function(method) { + _[method] = function(string) { + if (string == null) return ''; + return ('' + string).replace(entityRegexes[method], function(match) { + return entityMap[method][match]; + }); + }; + }); + + // If the value of the named property is a function then invoke it; + // otherwise, return it. + _.result = function(object, property) { + if (object == null) return null; + var value = object[property]; + return _.isFunction(value) ? value.call(object) : value; + }; + + // Add your own custom functions to the Underscore object. + _.mixin = function(obj) { + each(_.functions(obj), function(name){ + var func = _[name] = obj[name]; + _.prototype[name] = function() { + var args = [this._wrapped]; + push.apply(args, arguments); + return result.call(this, func.apply(_, args)); + }; + }); + }; + + // Generate a unique integer id (unique within the entire client session). + // Useful for temporary DOM ids. + var idCounter = 0; + _.uniqueId = function(prefix) { + var id = ++idCounter + ''; + return prefix ? prefix + id : id; + }; + + // By default, Underscore uses ERB-style template delimiters, change the + // following template settings to use alternative delimiters. + _.templateSettings = { + evaluate : /<%([\s\S]+?)%>/g, + interpolate : /<%=([\s\S]+?)%>/g, + escape : /<%-([\s\S]+?)%>/g + }; + + // When customizing `templateSettings`, if you don't want to define an + // interpolation, evaluation or escaping regex, we need one that is + // guaranteed not to match. + var noMatch = /(.)^/; + + // Certain characters need to be escaped so that they can be put into a + // string literal. + var escapes = { + "'": "'", + '\\': '\\', + '\r': 'r', + '\n': 'n', + '\t': 't', + '\u2028': 'u2028', + '\u2029': 'u2029' + }; + + var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g; + + // JavaScript micro-templating, similar to John Resig's implementation. + // Underscore templating handles arbitrary delimiters, preserves whitespace, + // and correctly escapes quotes within interpolated code. + _.template = function(text, data, settings) { + var render; + settings = _.defaults({}, settings, _.templateSettings); + + // Combine delimiters into one regular expression via alternation. + var matcher = new RegExp([ + (settings.escape || noMatch).source, + (settings.interpolate || noMatch).source, + (settings.evaluate || noMatch).source + ].join('|') + '|$', 'g'); + + // Compile the template source, escaping string literals appropriately. + var index = 0; + var source = "__p+='"; + text.replace(matcher, function(match, escape, interpolate, evaluate, offset) { + source += text.slice(index, offset) + .replace(escaper, function(match) { return '\\' + escapes[match]; }); + + if (escape) { + source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'"; + } + if (interpolate) { + source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'"; + } + if (evaluate) { + source += "';\n" + evaluate + "\n__p+='"; + } + index = offset + match.length; + return match; + }); + source += "';\n"; + + // If a variable is not specified, place data values in local scope. + if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n'; + + source = "var __t,__p='',__j=Array.prototype.join," + + "print=function(){__p+=__j.call(arguments,'');};\n" + + source + "return __p;\n"; + + try { + render = new Function(settings.variable || 'obj', '_', source); + } catch (e) { + e.source = source; + throw e; + } + + if (data) return render(data, _); + var template = function(data) { + return render.call(this, data, _); + }; + + // Provide the compiled function source as a convenience for precompilation. + template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}'; + + return template; + }; + + // Add a "chain" function, which will delegate to the wrapper. + _.chain = function(obj) { + return _(obj).chain(); + }; + + // OOP + // --------------- + // If Underscore is called as a function, it returns a wrapped object that + // can be used OO-style. This wrapper holds altered versions of all the + // underscore functions. Wrapped objects may be chained. + + // Helper function to continue chaining intermediate results. + var result = function(obj) { + return this._chain ? _(obj).chain() : obj; + }; + + // Add all of the Underscore functions to the wrapper object. + _.mixin(_); + + // Add all mutator Array functions to the wrapper. + each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) { + var method = ArrayProto[name]; + _.prototype[name] = function() { + var obj = this._wrapped; + method.apply(obj, arguments); + if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0]; + return result.call(this, obj); + }; + }); + + // Add all accessor Array functions to the wrapper. + each(['concat', 'join', 'slice'], function(name) { + var method = ArrayProto[name]; + _.prototype[name] = function() { + return result.call(this, method.apply(this._wrapped, arguments)); + }; + }); + + _.extend(_.prototype, { + + // Start chaining a wrapped Underscore object. + chain: function() { + this._chain = true; + return this; + }, + + // Extracts the result from a wrapped and chained object. + value: function() { + return this._wrapped; + } + + }); + +}).call(this); + +})() +},{}],11:[function(require,module,exports){ +var events = require('events'); + +exports.isArray = isArray; +exports.isDate = function(obj){return Object.prototype.toString.call(obj) === '[object Date]'}; +exports.isRegExp = function(obj){return Object.prototype.toString.call(obj) === '[object RegExp]'}; + + +exports.print = function () {}; +exports.puts = function () {}; +exports.debug = function() {}; + +exports.inspect = function(obj, showHidden, depth, colors) { + var seen = []; + + var stylize = function(str, styleType) { + // http://en.wikipedia.org/wiki/ANSI_escape_code#graphics + var styles = + { 'bold' : [1, 22], + 'italic' : [3, 23], + 'underline' : [4, 24], + 'inverse' : [7, 27], + 'white' : [37, 39], + 'grey' : [90, 39], + 'black' : [30, 39], + 'blue' : [34, 39], + 'cyan' : [36, 39], + 'green' : [32, 39], + 'magenta' : [35, 39], + 'red' : [31, 39], + 'yellow' : [33, 39] }; + + var style = + { 'special': 'cyan', + 'number': 'blue', + 'boolean': 'yellow', + 'undefined': 'grey', + 'null': 'bold', + 'string': 'green', + 'date': 'magenta', + // "name": intentionally not styling + 'regexp': 'red' }[styleType]; + + if (style) { + return '\033[' + styles[style][0] + 'm' + str + + '\033[' + styles[style][1] + 'm'; + } else { + return str; + } + }; + if (! colors) { + stylize = function(str, styleType) { return str; }; + } + + function format(value, recurseTimes) { + // Provide a hook for user-specified inspect functions. + // Check that value is an object with an inspect function on it + if (value && typeof value.inspect === 'function' && + // Filter out the util module, it's inspect function is special + value !== exports && + // Also filter out any prototype objects using the circular check. + !(value.constructor && value.constructor.prototype === value)) { + return value.inspect(recurseTimes); + } + + // Primitive types cannot have properties + switch (typeof value) { + case 'undefined': + return stylize('undefined', 'undefined'); + + case 'string': + var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') + .replace(/'/g, "\\'") + .replace(/\\"/g, '"') + '\''; + return stylize(simple, 'string'); + + case 'number': + return stylize('' + value, 'number'); + + case 'boolean': + return stylize('' + value, 'boolean'); + } + // For some reason typeof null is "object", so special case here. + if (value === null) { + return stylize('null', 'null'); + } + + // Look up the keys of the object. + var visible_keys = Object_keys(value); + var keys = showHidden ? Object_getOwnPropertyNames(value) : visible_keys; + + // Functions without properties can be shortcutted. + if (typeof value === 'function' && keys.length === 0) { + if (isRegExp(value)) { + return stylize('' + value, 'regexp'); + } else { + var name = value.name ? ': ' + value.name : ''; + return stylize('[Function' + name + ']', 'special'); + } + } + + // Dates without properties can be shortcutted + if (isDate(value) && keys.length === 0) { + return stylize(value.toUTCString(), 'date'); + } + + var base, type, braces; + // Determine the object type + if (isArray(value)) { + type = 'Array'; + braces = ['[', ']']; + } else { + type = 'Object'; + braces = ['{', '}']; + } + + // Make functions say that they are functions + if (typeof value === 'function') { + var n = value.name ? ': ' + value.name : ''; + base = (isRegExp(value)) ? ' ' + value : ' [Function' + n + ']'; + } else { + base = ''; + } + + // Make dates with properties first say the date + if (isDate(value)) { + base = ' ' + value.toUTCString(); + } + + if (keys.length === 0) { + return braces[0] + base + braces[1]; + } + + if (recurseTimes < 0) { + if (isRegExp(value)) { + return stylize('' + value, 'regexp'); + } else { + return stylize('[Object]', 'special'); + } + } + + seen.push(value); + + var output = keys.map(function(key) { + var name, str; + if (value.__lookupGetter__) { + if (value.__lookupGetter__(key)) { + if (value.__lookupSetter__(key)) { + str = stylize('[Getter/Setter]', 'special'); + } else { + str = stylize('[Getter]', 'special'); + } + } else { + if (value.__lookupSetter__(key)) { + str = stylize('[Setter]', 'special'); + } + } + } + if (visible_keys.indexOf(key) < 0) { + name = '[' + key + ']'; + } + if (!str) { + if (seen.indexOf(value[key]) < 0) { + if (recurseTimes === null) { + str = format(value[key]); + } else { + str = format(value[key], recurseTimes - 1); + } + if (str.indexOf('\n') > -1) { + if (isArray(value)) { + str = str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n').substr(2); + } else { + str = '\n' + str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n'); + } + } + } else { + str = stylize('[Circular]', 'special'); + } + } + if (typeof name === 'undefined') { + if (type === 'Array' && key.match(/^\d+$/)) { + return str; + } + name = JSON.stringify('' + key); + if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { + name = name.substr(1, name.length - 2); + name = stylize(name, 'name'); + } else { + name = name.replace(/'/g, "\\'") + .replace(/\\"/g, '"') + .replace(/(^"|"$)/g, "'"); + name = stylize(name, 'string'); + } + } + + return name + ': ' + str; + }); + + seen.pop(); + + var numLinesEst = 0; + var length = output.reduce(function(prev, cur) { + numLinesEst++; + if (cur.indexOf('\n') >= 0) numLinesEst++; + return prev + cur.length + 1; + }, 0); + + if (length > 50) { + output = braces[0] + + (base === '' ? '' : base + '\n ') + + ' ' + + output.join(',\n ') + + ' ' + + braces[1]; + + } else { + output = braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; + } + + return output; + } + return format(obj, (typeof depth === 'undefined' ? 2 : depth)); +}; + + +function isArray(ar) { + return ar instanceof Array || + Array.isArray(ar) || + (ar && ar !== Object.prototype && isArray(ar.__proto__)); +} + + +function isRegExp(re) { + return re instanceof RegExp || + (typeof re === 'object' && Object.prototype.toString.call(re) === '[object RegExp]'); +} + + +function isDate(d) { + if (d instanceof Date) return true; + if (typeof d !== 'object') return false; + var properties = Date.prototype && Object_getOwnPropertyNames(Date.prototype); + var proto = d.__proto__ && Object_getOwnPropertyNames(d.__proto__); + return JSON.stringify(proto) === JSON.stringify(properties); +} + +function pad(n) { + return n < 10 ? '0' + n.toString(10) : n.toString(10); +} + +var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', + 'Oct', 'Nov', 'Dec']; + +// 26 Feb 16:19:34 +function timestamp() { + var d = new Date(); + var time = [pad(d.getHours()), + pad(d.getMinutes()), + pad(d.getSeconds())].join(':'); + return [d.getDate(), months[d.getMonth()], time].join(' '); +} + +exports.log = function (msg) {}; + +exports.pump = null; + +var Object_keys = Object.keys || function (obj) { + var res = []; + for (var key in obj) res.push(key); + return res; +}; + +var Object_getOwnPropertyNames = Object.getOwnPropertyNames || function (obj) { + var res = []; + for (var key in obj) { + if (Object.hasOwnProperty.call(obj, key)) res.push(key); + } + return res; +}; + +var Object_create = Object.create || function (prototype, properties) { + // from es5-shim + var object; + if (prototype === null) { + object = { '__proto__' : null }; + } + else { + if (typeof prototype !== 'object') { + throw new TypeError( + 'typeof prototype[' + (typeof prototype) + '] != \'object\'' + ); + } + var Type = function () {}; + Type.prototype = prototype; + object = new Type(); + object.__proto__ = prototype; + } + if (typeof properties !== 'undefined' && Object.defineProperties) { + Object.defineProperties(object, properties); + } + return object; +}; + +exports.inherits = function(ctor, superCtor) { + ctor.super_ = superCtor; + ctor.prototype = Object_create(superCtor.prototype, { + constructor: { + value: ctor, + enumerable: false, + writable: true, + configurable: true + } + }); +}; + +var formatRegExp = /%[sdj%]/g; +exports.format = function(f) { + if (typeof f !== 'string') { + var objects = []; + for (var i = 0; i < arguments.length; i++) { + objects.push(exports.inspect(arguments[i])); + } + return objects.join(' '); + } + + var i = 1; + var args = arguments; + var len = args.length; + var str = String(f).replace(formatRegExp, function(x) { + if (x === '%%') return '%'; + if (i >= len) return x; + switch (x) { + case '%s': return String(args[i++]); + case '%d': return Number(args[i++]); + case '%j': return JSON.stringify(args[i++]); + default: + return x; + } + }); + for(var x = args[i]; i < len; x = args[++i]){ + if (x === null || typeof x !== 'object') { + str += ' ' + x; + } else { + str += ' ' + exports.inspect(x); + } + } + return str; +}; + +},{"events":2}],12:[function(require,module,exports){ +(function(){// UTILITY +var util = require('util'); +var Buffer = require("buffer").Buffer; +var pSlice = Array.prototype.slice; + +function objectKeys(object) { + if (Object.keys) return Object.keys(object); + var result = []; + for (var name in object) { + if (Object.prototype.hasOwnProperty.call(object, name)) { + result.push(name); + } + } + return result; +} + +// 1. The assert module provides functions that throw +// AssertionError's when particular conditions are not met. The +// assert module must conform to the following interface. + +var assert = module.exports = ok; + +// 2. The AssertionError is defined in assert. +// new assert.AssertionError({ message: message, +// actual: actual, +// expected: expected }) + +assert.AssertionError = function AssertionError(options) { + this.name = 'AssertionError'; + this.message = options.message; + this.actual = options.actual; + this.expected = options.expected; + this.operator = options.operator; + var stackStartFunction = options.stackStartFunction || fail; + + if (Error.captureStackTrace) { + Error.captureStackTrace(this, stackStartFunction); + } +}; +util.inherits(assert.AssertionError, Error); + +function replacer(key, value) { + if (value === undefined) { + return '' + value; + } + if (typeof value === 'number' && (isNaN(value) || !isFinite(value))) { + return value.toString(); + } + if (typeof value === 'function' || value instanceof RegExp) { + return value.toString(); + } + return value; +} + +function truncate(s, n) { + if (typeof s == 'string') { + return s.length < n ? s : s.slice(0, n); + } else { + return s; + } +} + +assert.AssertionError.prototype.toString = function() { + if (this.message) { + return [this.name + ':', this.message].join(' '); + } else { + return [ + this.name + ':', + truncate(JSON.stringify(this.actual, replacer), 128), + this.operator, + truncate(JSON.stringify(this.expected, replacer), 128) + ].join(' '); + } +}; + +// assert.AssertionError instanceof Error + +assert.AssertionError.__proto__ = Error.prototype; + +// At present only the three keys mentioned above are used and +// understood by the spec. Implementations or sub modules can pass +// other keys to the AssertionError's constructor - they will be +// ignored. + +// 3. All of the following functions must throw an AssertionError +// when a corresponding condition is not met, with a message that +// may be undefined if not provided. All assertion methods provide +// both the actual and expected values to the assertion error for +// display purposes. + +function fail(actual, expected, message, operator, stackStartFunction) { + throw new assert.AssertionError({ + message: message, + actual: actual, + expected: expected, + operator: operator, + stackStartFunction: stackStartFunction + }); +} + +// EXTENSION! allows for well behaved errors defined elsewhere. +assert.fail = fail; + +// 4. Pure assertion tests whether a value is truthy, as determined +// by !!guard. +// assert.ok(guard, message_opt); +// This statement is equivalent to assert.equal(true, guard, +// message_opt);. To test strictly for the value true, use +// assert.strictEqual(true, guard, message_opt);. + +function ok(value, message) { + if (!!!value) fail(value, true, message, '==', assert.ok); +} +assert.ok = ok; + +// 5. The equality assertion tests shallow, coercive equality with +// ==. +// assert.equal(actual, expected, message_opt); + +assert.equal = function equal(actual, expected, message) { + if (actual != expected) fail(actual, expected, message, '==', assert.equal); +}; + +// 6. The non-equality assertion tests for whether two objects are not equal +// with != assert.notEqual(actual, expected, message_opt); + +assert.notEqual = function notEqual(actual, expected, message) { + if (actual == expected) { + fail(actual, expected, message, '!=', assert.notEqual); + } +}; + +// 7. The equivalence assertion tests a deep equality relation. +// assert.deepEqual(actual, expected, message_opt); + +assert.deepEqual = function deepEqual(actual, expected, message) { + if (!_deepEqual(actual, expected)) { + fail(actual, expected, message, 'deepEqual', assert.deepEqual); + } +}; + +function _deepEqual(actual, expected) { + // 7.1. All identical values are equivalent, as determined by ===. + if (actual === expected) { + return true; + + } else if (Buffer.isBuffer(actual) && Buffer.isBuffer(expected)) { + if (actual.length != expected.length) return false; + + for (var i = 0; i < actual.length; i++) { + if (actual[i] !== expected[i]) return false; + } + + return true; + + // 7.2. If the expected value is a Date object, the actual value is + // equivalent if it is also a Date object that refers to the same time. + } else if (actual instanceof Date && expected instanceof Date) { + return actual.getTime() === expected.getTime(); + + // 7.3. Other pairs that do not both pass typeof value == 'object', + // equivalence is determined by ==. + } else if (typeof actual != 'object' && typeof expected != 'object') { + return actual == expected; + + // 7.4. For all other Object pairs, including Array objects, equivalence is + // determined by having the same number of owned properties (as verified + // with Object.prototype.hasOwnProperty.call), the same set of keys + // (although not necessarily the same order), equivalent values for every + // corresponding key, and an identical 'prototype' property. Note: this + // accounts for both named and indexed properties on Arrays. + } else { + return objEquiv(actual, expected); + } +} + +function isUndefinedOrNull(value) { + return value === null || value === undefined; +} + +function isArguments(object) { + return Object.prototype.toString.call(object) == '[object Arguments]'; +} + +function objEquiv(a, b) { + if (isUndefinedOrNull(a) || isUndefinedOrNull(b)) + return false; + // an identical 'prototype' property. + if (a.prototype !== b.prototype) return false; + //~~~I've managed to break Object.keys through screwy arguments passing. + // Converting to array solves the problem. + if (isArguments(a)) { + if (!isArguments(b)) { + return false; + } + a = pSlice.call(a); + b = pSlice.call(b); + return _deepEqual(a, b); + } + try { + var ka = objectKeys(a), + kb = objectKeys(b), + key, i; + } catch (e) {//happens when one is a string literal and the other isn't + return false; + } + // having the same number of owned properties (keys incorporates + // hasOwnProperty) + if (ka.length != kb.length) + return false; + //the same set of keys (although not necessarily the same order), + ka.sort(); + kb.sort(); + //~~~cheap key test + for (i = ka.length - 1; i >= 0; i--) { + if (ka[i] != kb[i]) + return false; + } + //equivalent values for every corresponding key, and + //~~~possibly expensive deep test + for (i = ka.length - 1; i >= 0; i--) { + key = ka[i]; + if (!_deepEqual(a[key], b[key])) return false; + } + return true; +} + +// 8. The non-equivalence assertion tests for any deep inequality. +// assert.notDeepEqual(actual, expected, message_opt); + +assert.notDeepEqual = function notDeepEqual(actual, expected, message) { + if (_deepEqual(actual, expected)) { + fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual); + } +}; + +// 9. The strict equality assertion tests strict equality, as determined by ===. +// assert.strictEqual(actual, expected, message_opt); + +assert.strictEqual = function strictEqual(actual, expected, message) { + if (actual !== expected) { + fail(actual, expected, message, '===', assert.strictEqual); + } +}; + +// 10. The strict non-equality assertion tests for strict inequality, as +// determined by !==. assert.notStrictEqual(actual, expected, message_opt); + +assert.notStrictEqual = function notStrictEqual(actual, expected, message) { + if (actual === expected) { + fail(actual, expected, message, '!==', assert.notStrictEqual); + } +}; + +function expectedException(actual, expected) { + if (!actual || !expected) { + return false; + } + + if (expected instanceof RegExp) { + return expected.test(actual); + } else if (actual instanceof expected) { + return true; + } else if (expected.call({}, actual) === true) { + return true; + } + + return false; +} + +function _throws(shouldThrow, block, expected, message) { + var actual; + + if (typeof expected === 'string') { + message = expected; + expected = null; + } + + try { + block(); + } catch (e) { + actual = e; + } + + message = (expected && expected.name ? ' (' + expected.name + ').' : '.') + + (message ? ' ' + message : '.'); + + if (shouldThrow && !actual) { + fail('Missing expected exception' + message); + } + + if (!shouldThrow && expectedException(actual, expected)) { + fail('Got unwanted exception' + message); + } + + if ((shouldThrow && actual && expected && + !expectedException(actual, expected)) || (!shouldThrow && actual)) { + throw actual; + } +} + +// 11. Expected to throw an error: +// assert.throws(block, Error_opt, message_opt); + +assert.throws = function(block, /*optional*/error, /*optional*/message) { + _throws.apply(this, [true].concat(pSlice.call(arguments))); +}; + +// EXTENSION! This is annoying to write outside this module. +assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) { + _throws.apply(this, [false].concat(pSlice.call(arguments))); +}; + +assert.ifError = function(err) { if (err) {throw err;}}; + +})() +},{"util":11,"buffer":13}],14:[function(require,module,exports){ +exports.readIEEE754 = function(buffer, offset, isBE, mLen, nBytes) { + var e, m, + eLen = nBytes * 8 - mLen - 1, + eMax = (1 << eLen) - 1, + eBias = eMax >> 1, + nBits = -7, + i = isBE ? 0 : (nBytes - 1), + d = isBE ? 1 : -1, + s = buffer[offset + i]; + + i += d; + + e = s & ((1 << (-nBits)) - 1); + s >>= (-nBits); + nBits += eLen; + for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8); + + m = e & ((1 << (-nBits)) - 1); + e >>= (-nBits); + nBits += mLen; + for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8); + + if (e === 0) { + e = 1 - eBias; + } else if (e === eMax) { + return m ? NaN : ((s ? -1 : 1) * Infinity); + } else { + m = m + Math.pow(2, mLen); + e = e - eBias; + } + return (s ? -1 : 1) * m * Math.pow(2, e - mLen); +}; + +exports.writeIEEE754 = function(buffer, value, offset, isBE, mLen, nBytes) { + var e, m, c, + eLen = nBytes * 8 - mLen - 1, + eMax = (1 << eLen) - 1, + eBias = eMax >> 1, + rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0), + i = isBE ? (nBytes - 1) : 0, + d = isBE ? -1 : 1, + s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0; + + value = Math.abs(value); + + if (isNaN(value) || value === Infinity) { + m = isNaN(value) ? 1 : 0; + e = eMax; + } else { + e = Math.floor(Math.log(value) / Math.LN2); + if (value * (c = Math.pow(2, -e)) < 1) { + e--; + c *= 2; + } + if (e + eBias >= 1) { + value += rt / c; + } else { + value += rt * Math.pow(2, 1 - eBias); + } + if (value * c >= 2) { + e++; + c /= 2; + } + + if (e + eBias >= eMax) { + m = 0; + e = eMax; + } else if (e + eBias >= 1) { + m = (value * c - 1) * Math.pow(2, mLen); + e = e + eBias; + } else { + m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen); + e = 0; + } + } + + for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8); + + e = (e << mLen) | m; + eLen += mLen; + for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8); + + buffer[offset + i - d] |= s * 128; +}; + +},{}],13:[function(require,module,exports){ +(function(){function SlowBuffer (size) { + this.length = size; +}; + +var assert = require('assert'); + +exports.INSPECT_MAX_BYTES = 50; + + +function toHex(n) { + if (n < 16) return '0' + n.toString(16); + return n.toString(16); +} + +function utf8ToBytes(str) { + var byteArray = []; + for (var i = 0; i < str.length; i++) + if (str.charCodeAt(i) <= 0x7F) + byteArray.push(str.charCodeAt(i)); + else { + var h = encodeURIComponent(str.charAt(i)).substr(1).split('%'); + for (var j = 0; j < h.length; j++) + byteArray.push(parseInt(h[j], 16)); + } + + return byteArray; +} + +function asciiToBytes(str) { + var byteArray = [] + for (var i = 0; i < str.length; i++ ) + // Node's code seems to be doing this and not & 0x7F.. + byteArray.push( str.charCodeAt(i) & 0xFF ); + + return byteArray; +} + +function base64ToBytes(str) { + return require("base64-js").toByteArray(str); +} + +SlowBuffer.byteLength = function (str, encoding) { + switch (encoding || "utf8") { + case 'hex': + return str.length / 2; + + case 'utf8': + case 'utf-8': + return utf8ToBytes(str).length; + + case 'ascii': + case 'binary': + return str.length; + + case 'base64': + return base64ToBytes(str).length; + + default: + throw new Error('Unknown encoding'); + } +}; + +function blitBuffer(src, dst, offset, length) { + var pos, i = 0; + while (i < length) { + if ((i+offset >= dst.length) || (i >= src.length)) + break; + + dst[i + offset] = src[i]; + i++; + } + return i; +} + +SlowBuffer.prototype.utf8Write = function (string, offset, length) { + var bytes, pos; + return SlowBuffer._charsWritten = blitBuffer(utf8ToBytes(string), this, offset, length); +}; + +SlowBuffer.prototype.asciiWrite = function (string, offset, length) { + var bytes, pos; + return SlowBuffer._charsWritten = blitBuffer(asciiToBytes(string), this, offset, length); +}; + +SlowBuffer.prototype.binaryWrite = SlowBuffer.prototype.asciiWrite; + +SlowBuffer.prototype.base64Write = function (string, offset, length) { + var bytes, pos; + return SlowBuffer._charsWritten = blitBuffer(base64ToBytes(string), this, offset, length); +}; + +SlowBuffer.prototype.base64Slice = function (start, end) { + var bytes = Array.prototype.slice.apply(this, arguments) + return require("base64-js").fromByteArray(bytes); +} + +function decodeUtf8Char(str) { + try { + return decodeURIComponent(str); + } catch (err) { + return String.fromCharCode(0xFFFD); // UTF 8 invalid char + } +} + +SlowBuffer.prototype.utf8Slice = function () { + var bytes = Array.prototype.slice.apply(this, arguments); + var res = ""; + var tmp = ""; + var i = 0; + while (i < bytes.length) { + if (bytes[i] <= 0x7F) { + res += decodeUtf8Char(tmp) + String.fromCharCode(bytes[i]); + tmp = ""; + } else + tmp += "%" + bytes[i].toString(16); + + i++; + } + + return res + decodeUtf8Char(tmp); +} + +SlowBuffer.prototype.asciiSlice = function () { + var bytes = Array.prototype.slice.apply(this, arguments); + var ret = ""; + for (var i = 0; i < bytes.length; i++) + ret += String.fromCharCode(bytes[i]); + return ret; +} + +SlowBuffer.prototype.binarySlice = SlowBuffer.prototype.asciiSlice; + +SlowBuffer.prototype.inspect = function() { + var out = [], + len = this.length; + for (var i = 0; i < len; i++) { + out[i] = toHex(this[i]); + if (i == exports.INSPECT_MAX_BYTES) { + out[i + 1] = '...'; + break; + } + } + return ''; +}; + + +SlowBuffer.prototype.hexSlice = function(start, end) { + var len = this.length; + + if (!start || start < 0) start = 0; + if (!end || end < 0 || end > len) end = len; + + var out = ''; + for (var i = start; i < end; i++) { + out += toHex(this[i]); + } + return out; +}; + + +SlowBuffer.prototype.toString = function(encoding, start, end) { + encoding = String(encoding || 'utf8').toLowerCase(); + start = +start || 0; + if (typeof end == 'undefined') end = this.length; + + // Fastpath empty strings + if (+end == start) { + return ''; + } + + switch (encoding) { + case 'hex': + return this.hexSlice(start, end); + + case 'utf8': + case 'utf-8': + return this.utf8Slice(start, end); + + case 'ascii': + return this.asciiSlice(start, end); + + case 'binary': + return this.binarySlice(start, end); + + case 'base64': + return this.base64Slice(start, end); + + case 'ucs2': + case 'ucs-2': + return this.ucs2Slice(start, end); + + default: + throw new Error('Unknown encoding'); + } +}; + + +SlowBuffer.prototype.hexWrite = function(string, offset, length) { + offset = +offset || 0; + var remaining = this.length - offset; + if (!length) { + length = remaining; + } else { + length = +length; + if (length > remaining) { + length = remaining; + } + } + + // must be an even number of digits + var strLen = string.length; + if (strLen % 2) { + throw new Error('Invalid hex string'); + } + if (length > strLen / 2) { + length = strLen / 2; + } + for (var i = 0; i < length; i++) { + var byte = parseInt(string.substr(i * 2, 2), 16); + if (isNaN(byte)) throw new Error('Invalid hex string'); + this[offset + i] = byte; + } + SlowBuffer._charsWritten = i * 2; + return i; +}; + + +SlowBuffer.prototype.write = function(string, offset, length, encoding) { + // Support both (string, offset, length, encoding) + // and the legacy (string, encoding, offset, length) + if (isFinite(offset)) { + if (!isFinite(length)) { + encoding = length; + length = undefined; + } + } else { // legacy + var swap = encoding; + encoding = offset; + offset = length; + length = swap; + } + + offset = +offset || 0; + var remaining = this.length - offset; + if (!length) { + length = remaining; + } else { + length = +length; + if (length > remaining) { + length = remaining; + } + } + encoding = String(encoding || 'utf8').toLowerCase(); + + switch (encoding) { + case 'hex': + return this.hexWrite(string, offset, length); + + case 'utf8': + case 'utf-8': + return this.utf8Write(string, offset, length); + + case 'ascii': + return this.asciiWrite(string, offset, length); + + case 'binary': + return this.binaryWrite(string, offset, length); + + case 'base64': + return this.base64Write(string, offset, length); + + case 'ucs2': + case 'ucs-2': + return this.ucs2Write(string, offset, length); + + default: + throw new Error('Unknown encoding'); + } +}; + + +// slice(start, end) +SlowBuffer.prototype.slice = function(start, end) { + if (end === undefined) end = this.length; + + if (end > this.length) { + throw new Error('oob'); + } + if (start > end) { + throw new Error('oob'); + } + + return new Buffer(this, end - start, +start); +}; + +SlowBuffer.prototype.copy = function(target, targetstart, sourcestart, sourceend) { + var temp = []; + for (var i=sourcestart; i this.length) { + throw new Error('oob'); + } + if (start > end) { + throw new Error('oob'); + } + + for (var i = start; i < end; i++) { + this[i] = value; + } +} + +function coerce(length) { + // Coerce length to a number (possibly NaN), round up + // in case it's fractional (e.g. 123.456) then do a + // double negate to coerce a NaN to 0. Easy, right? + length = ~~Math.ceil(+length); + return length < 0 ? 0 : length; +} + + +// Buffer + +function Buffer(subject, encoding, offset) { + if (!(this instanceof Buffer)) { + return new Buffer(subject, encoding, offset); + } + + var type; + + // Are we slicing? + if (typeof offset === 'number') { + this.length = coerce(encoding); + this.parent = subject; + this.offset = offset; + } else { + // Find the length + switch (type = typeof subject) { + case 'number': + this.length = coerce(subject); + break; + + case 'string': + this.length = Buffer.byteLength(subject, encoding); + break; + + case 'object': // Assume object is an array + this.length = coerce(subject.length); + break; + + default: + throw new Error('First argument needs to be a number, ' + + 'array or string.'); + } + + if (this.length > Buffer.poolSize) { + // Big buffer, just alloc one. + this.parent = new SlowBuffer(this.length); + this.offset = 0; + + } else { + // Small buffer. + if (!pool || pool.length - pool.used < this.length) allocPool(); + this.parent = pool; + this.offset = pool.used; + pool.used += this.length; + } + + // Treat array-ish objects as a byte array. + if (isArrayIsh(subject)) { + for (var i = 0; i < this.length; i++) { + if (subject instanceof Buffer) { + this.parent[i + this.offset] = subject.readUInt8(i); + } + else { + this.parent[i + this.offset] = subject[i]; + } + } + } else if (type == 'string') { + // We are a string + this.length = this.write(subject, 0, encoding); + } + } + +} + +function isArrayIsh(subject) { + return Array.isArray(subject) || Buffer.isBuffer(subject) || + subject && typeof subject === 'object' && + typeof subject.length === 'number'; +} + +exports.SlowBuffer = SlowBuffer; +exports.Buffer = Buffer; + +Buffer.poolSize = 8 * 1024; +var pool; + +function allocPool() { + pool = new SlowBuffer(Buffer.poolSize); + pool.used = 0; +} + + +// Static methods +Buffer.isBuffer = function isBuffer(b) { + return b instanceof Buffer || b instanceof SlowBuffer; +}; + +Buffer.concat = function (list, totalLength) { + if (!Array.isArray(list)) { + throw new Error("Usage: Buffer.concat(list, [totalLength])\n \ + list should be an Array."); + } + + if (list.length === 0) { + return new Buffer(0); + } else if (list.length === 1) { + return list[0]; + } + + if (typeof totalLength !== 'number') { + totalLength = 0; + for (var i = 0; i < list.length; i++) { + var buf = list[i]; + totalLength += buf.length; + } + } + + var buffer = new Buffer(totalLength); + var pos = 0; + for (var i = 0; i < list.length; i++) { + var buf = list[i]; + buf.copy(buffer, pos); + pos += buf.length; + } + return buffer; +}; + +// Inspect +Buffer.prototype.inspect = function inspect() { + var out = [], + len = this.length; + + for (var i = 0; i < len; i++) { + out[i] = toHex(this.parent[i + this.offset]); + if (i == exports.INSPECT_MAX_BYTES) { + out[i + 1] = '...'; + break; + } + } + + return ''; +}; + + +Buffer.prototype.get = function get(i) { + if (i < 0 || i >= this.length) throw new Error('oob'); + return this.parent[this.offset + i]; +}; + + +Buffer.prototype.set = function set(i, v) { + if (i < 0 || i >= this.length) throw new Error('oob'); + return this.parent[this.offset + i] = v; +}; + + +// write(string, offset = 0, length = buffer.length-offset, encoding = 'utf8') +Buffer.prototype.write = function(string, offset, length, encoding) { + // Support both (string, offset, length, encoding) + // and the legacy (string, encoding, offset, length) + if (isFinite(offset)) { + if (!isFinite(length)) { + encoding = length; + length = undefined; + } + } else { // legacy + var swap = encoding; + encoding = offset; + offset = length; + length = swap; + } + + offset = +offset || 0; + var remaining = this.length - offset; + if (!length) { + length = remaining; + } else { + length = +length; + if (length > remaining) { + length = remaining; + } + } + encoding = String(encoding || 'utf8').toLowerCase(); + + var ret; + switch (encoding) { + case 'hex': + ret = this.parent.hexWrite(string, this.offset + offset, length); + break; + + case 'utf8': + case 'utf-8': + ret = this.parent.utf8Write(string, this.offset + offset, length); + break; + + case 'ascii': + ret = this.parent.asciiWrite(string, this.offset + offset, length); + break; + + case 'binary': + ret = this.parent.binaryWrite(string, this.offset + offset, length); + break; + + case 'base64': + // Warning: maxLength not taken into account in base64Write + ret = this.parent.base64Write(string, this.offset + offset, length); + break; + + case 'ucs2': + case 'ucs-2': + ret = this.parent.ucs2Write(string, this.offset + offset, length); + break; + + default: + throw new Error('Unknown encoding'); + } + + Buffer._charsWritten = SlowBuffer._charsWritten; + + return ret; +}; + + +// toString(encoding, start=0, end=buffer.length) +Buffer.prototype.toString = function(encoding, start, end) { + encoding = String(encoding || 'utf8').toLowerCase(); + + if (typeof start == 'undefined' || start < 0) { + start = 0; + } else if (start > this.length) { + start = this.length; + } + + if (typeof end == 'undefined' || end > this.length) { + end = this.length; + } else if (end < 0) { + end = 0; + } + + start = start + this.offset; + end = end + this.offset; + + switch (encoding) { + case 'hex': + return this.parent.hexSlice(start, end); + + case 'utf8': + case 'utf-8': + return this.parent.utf8Slice(start, end); + + case 'ascii': + return this.parent.asciiSlice(start, end); + + case 'binary': + return this.parent.binarySlice(start, end); + + case 'base64': + return this.parent.base64Slice(start, end); + + case 'ucs2': + case 'ucs-2': + return this.parent.ucs2Slice(start, end); + + default: + throw new Error('Unknown encoding'); + } +}; + + +// byteLength +Buffer.byteLength = SlowBuffer.byteLength; + + +// fill(value, start=0, end=buffer.length) +Buffer.prototype.fill = function fill(value, start, end) { + value || (value = 0); + start || (start = 0); + end || (end = this.length); + + if (typeof value === 'string') { + value = value.charCodeAt(0); + } + if (!(typeof value === 'number') || isNaN(value)) { + throw new Error('value is not a number'); + } + + if (end < start) throw new Error('end < start'); + + // Fill 0 bytes; we're done + if (end === start) return 0; + if (this.length == 0) return 0; + + if (start < 0 || start >= this.length) { + throw new Error('start out of bounds'); + } + + if (end < 0 || end > this.length) { + throw new Error('end out of bounds'); + } + + return this.parent.fill(value, + start + this.offset, + end + this.offset); +}; + + +// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length) +Buffer.prototype.copy = function(target, target_start, start, end) { + var source = this; + start || (start = 0); + end || (end = this.length); + target_start || (target_start = 0); + + if (end < start) throw new Error('sourceEnd < sourceStart'); + + // Copy 0 bytes; we're done + if (end === start) return 0; + if (target.length == 0 || source.length == 0) return 0; + + if (target_start < 0 || target_start >= target.length) { + throw new Error('targetStart out of bounds'); + } + + if (start < 0 || start >= source.length) { + throw new Error('sourceStart out of bounds'); + } + + if (end < 0 || end > source.length) { + throw new Error('sourceEnd out of bounds'); + } + + // Are we oob? + if (end > this.length) { + end = this.length; + } + + if (target.length - target_start < end - start) { + end = target.length - target_start + start; + } + + return this.parent.copy(target.parent, + target_start + target.offset, + start + this.offset, + end + this.offset); +}; + + +// slice(start, end) +Buffer.prototype.slice = function(start, end) { + if (end === undefined) end = this.length; + if (end > this.length) throw new Error('oob'); + if (start > end) throw new Error('oob'); + + return new Buffer(this.parent, end - start, +start + this.offset); +}; + + +// Legacy methods for backwards compatibility. + +Buffer.prototype.utf8Slice = function(start, end) { + return this.toString('utf8', start, end); +}; + +Buffer.prototype.binarySlice = function(start, end) { + return this.toString('binary', start, end); +}; + +Buffer.prototype.asciiSlice = function(start, end) { + return this.toString('ascii', start, end); +}; + +Buffer.prototype.utf8Write = function(string, offset) { + return this.write(string, offset, 'utf8'); +}; + +Buffer.prototype.binaryWrite = function(string, offset) { + return this.write(string, offset, 'binary'); +}; + +Buffer.prototype.asciiWrite = function(string, offset) { + return this.write(string, offset, 'ascii'); +}; + +Buffer.prototype.readUInt8 = function(offset, noAssert) { + var buffer = this; + + if (!noAssert) { + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset < buffer.length, + 'Trying to read beyond buffer length'); + } + + if (offset >= buffer.length) return; + + return buffer.parent[buffer.offset + offset]; +}; + +function readUInt16(buffer, offset, isBigEndian, noAssert) { + var val = 0; + + + if (!noAssert) { + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset + 1 < buffer.length, + 'Trying to read beyond buffer length'); + } + + if (offset >= buffer.length) return 0; + + if (isBigEndian) { + val = buffer.parent[buffer.offset + offset] << 8; + if (offset + 1 < buffer.length) { + val |= buffer.parent[buffer.offset + offset + 1]; + } + } else { + val = buffer.parent[buffer.offset + offset]; + if (offset + 1 < buffer.length) { + val |= buffer.parent[buffer.offset + offset + 1] << 8; + } + } + + return val; +} + +Buffer.prototype.readUInt16LE = function(offset, noAssert) { + return readUInt16(this, offset, false, noAssert); +}; + +Buffer.prototype.readUInt16BE = function(offset, noAssert) { + return readUInt16(this, offset, true, noAssert); +}; + +function readUInt32(buffer, offset, isBigEndian, noAssert) { + var val = 0; + + if (!noAssert) { + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset + 3 < buffer.length, + 'Trying to read beyond buffer length'); + } + + if (offset >= buffer.length) return 0; + + if (isBigEndian) { + if (offset + 1 < buffer.length) + val = buffer.parent[buffer.offset + offset + 1] << 16; + if (offset + 2 < buffer.length) + val |= buffer.parent[buffer.offset + offset + 2] << 8; + if (offset + 3 < buffer.length) + val |= buffer.parent[buffer.offset + offset + 3]; + val = val + (buffer.parent[buffer.offset + offset] << 24 >>> 0); + } else { + if (offset + 2 < buffer.length) + val = buffer.parent[buffer.offset + offset + 2] << 16; + if (offset + 1 < buffer.length) + val |= buffer.parent[buffer.offset + offset + 1] << 8; + val |= buffer.parent[buffer.offset + offset]; + if (offset + 3 < buffer.length) + val = val + (buffer.parent[buffer.offset + offset + 3] << 24 >>> 0); + } + + return val; +} + +Buffer.prototype.readUInt32LE = function(offset, noAssert) { + return readUInt32(this, offset, false, noAssert); +}; + +Buffer.prototype.readUInt32BE = function(offset, noAssert) { + return readUInt32(this, offset, true, noAssert); +}; + + +/* + * Signed integer types, yay team! A reminder on how two's complement actually + * works. The first bit is the signed bit, i.e. tells us whether or not the + * number should be positive or negative. If the two's complement value is + * positive, then we're done, as it's equivalent to the unsigned representation. + * + * Now if the number is positive, you're pretty much done, you can just leverage + * the unsigned translations and return those. Unfortunately, negative numbers + * aren't quite that straightforward. + * + * At first glance, one might be inclined to use the traditional formula to + * translate binary numbers between the positive and negative values in two's + * complement. (Though it doesn't quite work for the most negative value) + * Mainly: + * - invert all the bits + * - add one to the result + * + * Of course, this doesn't quite work in Javascript. Take for example the value + * of -128. This could be represented in 16 bits (big-endian) as 0xff80. But of + * course, Javascript will do the following: + * + * > ~0xff80 + * -65409 + * + * Whoh there, Javascript, that's not quite right. But wait, according to + * Javascript that's perfectly correct. When Javascript ends up seeing the + * constant 0xff80, it has no notion that it is actually a signed number. It + * assumes that we've input the unsigned value 0xff80. Thus, when it does the + * binary negation, it casts it into a signed value, (positive 0xff80). Then + * when you perform binary negation on that, it turns it into a negative number. + * + * Instead, we're going to have to use the following general formula, that works + * in a rather Javascript friendly way. I'm glad we don't support this kind of + * weird numbering scheme in the kernel. + * + * (BIT-MAX - (unsigned)val + 1) * -1 + * + * The astute observer, may think that this doesn't make sense for 8-bit numbers + * (really it isn't necessary for them). However, when you get 16-bit numbers, + * you do. Let's go back to our prior example and see how this will look: + * + * (0xffff - 0xff80 + 1) * -1 + * (0x007f + 1) * -1 + * (0x0080) * -1 + */ +Buffer.prototype.readInt8 = function(offset, noAssert) { + var buffer = this; + var neg; + + if (!noAssert) { + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset < buffer.length, + 'Trying to read beyond buffer length'); + } + + if (offset >= buffer.length) return; + + neg = buffer.parent[buffer.offset + offset] & 0x80; + if (!neg) { + return (buffer.parent[buffer.offset + offset]); + } + + return ((0xff - buffer.parent[buffer.offset + offset] + 1) * -1); +}; + +function readInt16(buffer, offset, isBigEndian, noAssert) { + var neg, val; + + if (!noAssert) { + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset + 1 < buffer.length, + 'Trying to read beyond buffer length'); + } + + val = readUInt16(buffer, offset, isBigEndian, noAssert); + neg = val & 0x8000; + if (!neg) { + return val; + } + + return (0xffff - val + 1) * -1; +} + +Buffer.prototype.readInt16LE = function(offset, noAssert) { + return readInt16(this, offset, false, noAssert); +}; + +Buffer.prototype.readInt16BE = function(offset, noAssert) { + return readInt16(this, offset, true, noAssert); +}; + +function readInt32(buffer, offset, isBigEndian, noAssert) { + var neg, val; + + if (!noAssert) { + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset + 3 < buffer.length, + 'Trying to read beyond buffer length'); + } + + val = readUInt32(buffer, offset, isBigEndian, noAssert); + neg = val & 0x80000000; + if (!neg) { + return (val); + } + + return (0xffffffff - val + 1) * -1; +} + +Buffer.prototype.readInt32LE = function(offset, noAssert) { + return readInt32(this, offset, false, noAssert); +}; + +Buffer.prototype.readInt32BE = function(offset, noAssert) { + return readInt32(this, offset, true, noAssert); +}; + +function readFloat(buffer, offset, isBigEndian, noAssert) { + if (!noAssert) { + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset + 3 < buffer.length, + 'Trying to read beyond buffer length'); + } + + return require('./buffer_ieee754').readIEEE754(buffer, offset, isBigEndian, + 23, 4); +} + +Buffer.prototype.readFloatLE = function(offset, noAssert) { + return readFloat(this, offset, false, noAssert); +}; + +Buffer.prototype.readFloatBE = function(offset, noAssert) { + return readFloat(this, offset, true, noAssert); +}; + +function readDouble(buffer, offset, isBigEndian, noAssert) { + if (!noAssert) { + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset + 7 < buffer.length, + 'Trying to read beyond buffer length'); + } + + return require('./buffer_ieee754').readIEEE754(buffer, offset, isBigEndian, + 52, 8); +} + +Buffer.prototype.readDoubleLE = function(offset, noAssert) { + return readDouble(this, offset, false, noAssert); +}; + +Buffer.prototype.readDoubleBE = function(offset, noAssert) { + return readDouble(this, offset, true, noAssert); +}; + + +/* + * We have to make sure that the value is a valid integer. This means that it is + * non-negative. It has no fractional component and that it does not exceed the + * maximum allowed value. + * + * value The number to check for validity + * + * max The maximum value + */ +function verifuint(value, max) { + assert.ok(typeof (value) == 'number', + 'cannot write a non-number as a number'); + + assert.ok(value >= 0, + 'specified a negative value for writing an unsigned value'); + + assert.ok(value <= max, 'value is larger than maximum value for type'); + + assert.ok(Math.floor(value) === value, 'value has a fractional component'); +} + +Buffer.prototype.writeUInt8 = function(value, offset, noAssert) { + var buffer = this; + + if (!noAssert) { + assert.ok(value !== undefined && value !== null, + 'missing value'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset < buffer.length, + 'trying to write beyond buffer length'); + + verifuint(value, 0xff); + } + + if (offset < buffer.length) { + buffer.parent[buffer.offset + offset] = value; + } +}; + +function writeUInt16(buffer, value, offset, isBigEndian, noAssert) { + if (!noAssert) { + assert.ok(value !== undefined && value !== null, + 'missing value'); + + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset + 1 < buffer.length, + 'trying to write beyond buffer length'); + + verifuint(value, 0xffff); + } + + for (var i = 0; i < Math.min(buffer.length - offset, 2); i++) { + buffer.parent[buffer.offset + offset + i] = + (value & (0xff << (8 * (isBigEndian ? 1 - i : i)))) >>> + (isBigEndian ? 1 - i : i) * 8; + } + +} + +Buffer.prototype.writeUInt16LE = function(value, offset, noAssert) { + writeUInt16(this, value, offset, false, noAssert); +}; + +Buffer.prototype.writeUInt16BE = function(value, offset, noAssert) { + writeUInt16(this, value, offset, true, noAssert); +}; + +function writeUInt32(buffer, value, offset, isBigEndian, noAssert) { + if (!noAssert) { + assert.ok(value !== undefined && value !== null, + 'missing value'); + + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset + 3 < buffer.length, + 'trying to write beyond buffer length'); + + verifuint(value, 0xffffffff); + } + + for (var i = 0; i < Math.min(buffer.length - offset, 4); i++) { + buffer.parent[buffer.offset + offset + i] = + (value >>> (isBigEndian ? 3 - i : i) * 8) & 0xff; + } +} + +Buffer.prototype.writeUInt32LE = function(value, offset, noAssert) { + writeUInt32(this, value, offset, false, noAssert); +}; + +Buffer.prototype.writeUInt32BE = function(value, offset, noAssert) { + writeUInt32(this, value, offset, true, noAssert); +}; + + +/* + * We now move onto our friends in the signed number category. Unlike unsigned + * numbers, we're going to have to worry a bit more about how we put values into + * arrays. Since we are only worrying about signed 32-bit values, we're in + * slightly better shape. Unfortunately, we really can't do our favorite binary + * & in this system. It really seems to do the wrong thing. For example: + * + * > -32 & 0xff + * 224 + * + * What's happening above is really: 0xe0 & 0xff = 0xe0. However, the results of + * this aren't treated as a signed number. Ultimately a bad thing. + * + * What we're going to want to do is basically create the unsigned equivalent of + * our representation and pass that off to the wuint* functions. To do that + * we're going to do the following: + * + * - if the value is positive + * we can pass it directly off to the equivalent wuint + * - if the value is negative + * we do the following computation: + * mb + val + 1, where + * mb is the maximum unsigned value in that byte size + * val is the Javascript negative integer + * + * + * As a concrete value, take -128. In signed 16 bits this would be 0xff80. If + * you do out the computations: + * + * 0xffff - 128 + 1 + * 0xffff - 127 + * 0xff80 + * + * You can then encode this value as the signed version. This is really rather + * hacky, but it should work and get the job done which is our goal here. + */ + +/* + * A series of checks to make sure we actually have a signed 32-bit number + */ +function verifsint(value, max, min) { + assert.ok(typeof (value) == 'number', + 'cannot write a non-number as a number'); + + assert.ok(value <= max, 'value larger than maximum allowed value'); + + assert.ok(value >= min, 'value smaller than minimum allowed value'); + + assert.ok(Math.floor(value) === value, 'value has a fractional component'); +} + +function verifIEEE754(value, max, min) { + assert.ok(typeof (value) == 'number', + 'cannot write a non-number as a number'); + + assert.ok(value <= max, 'value larger than maximum allowed value'); + + assert.ok(value >= min, 'value smaller than minimum allowed value'); +} + +Buffer.prototype.writeInt8 = function(value, offset, noAssert) { + var buffer = this; + + if (!noAssert) { + assert.ok(value !== undefined && value !== null, + 'missing value'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset < buffer.length, + 'Trying to write beyond buffer length'); + + verifsint(value, 0x7f, -0x80); + } + + if (value >= 0) { + buffer.writeUInt8(value, offset, noAssert); + } else { + buffer.writeUInt8(0xff + value + 1, offset, noAssert); + } +}; + +function writeInt16(buffer, value, offset, isBigEndian, noAssert) { + if (!noAssert) { + assert.ok(value !== undefined && value !== null, + 'missing value'); + + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset + 1 < buffer.length, + 'Trying to write beyond buffer length'); + + verifsint(value, 0x7fff, -0x8000); + } + + if (value >= 0) { + writeUInt16(buffer, value, offset, isBigEndian, noAssert); + } else { + writeUInt16(buffer, 0xffff + value + 1, offset, isBigEndian, noAssert); + } +} + +Buffer.prototype.writeInt16LE = function(value, offset, noAssert) { + writeInt16(this, value, offset, false, noAssert); +}; + +Buffer.prototype.writeInt16BE = function(value, offset, noAssert) { + writeInt16(this, value, offset, true, noAssert); +}; + +function writeInt32(buffer, value, offset, isBigEndian, noAssert) { + if (!noAssert) { + assert.ok(value !== undefined && value !== null, + 'missing value'); + + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset + 3 < buffer.length, + 'Trying to write beyond buffer length'); + + verifsint(value, 0x7fffffff, -0x80000000); + } + + if (value >= 0) { + writeUInt32(buffer, value, offset, isBigEndian, noAssert); + } else { + writeUInt32(buffer, 0xffffffff + value + 1, offset, isBigEndian, noAssert); + } +} + +Buffer.prototype.writeInt32LE = function(value, offset, noAssert) { + writeInt32(this, value, offset, false, noAssert); +}; + +Buffer.prototype.writeInt32BE = function(value, offset, noAssert) { + writeInt32(this, value, offset, true, noAssert); +}; + +function writeFloat(buffer, value, offset, isBigEndian, noAssert) { + if (!noAssert) { + assert.ok(value !== undefined && value !== null, + 'missing value'); + + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset + 3 < buffer.length, + 'Trying to write beyond buffer length'); + + verifIEEE754(value, 3.4028234663852886e+38, -3.4028234663852886e+38); + } + + require('./buffer_ieee754').writeIEEE754(buffer, value, offset, isBigEndian, + 23, 4); +} + +Buffer.prototype.writeFloatLE = function(value, offset, noAssert) { + writeFloat(this, value, offset, false, noAssert); +}; + +Buffer.prototype.writeFloatBE = function(value, offset, noAssert) { + writeFloat(this, value, offset, true, noAssert); +}; + +function writeDouble(buffer, value, offset, isBigEndian, noAssert) { + if (!noAssert) { + assert.ok(value !== undefined && value !== null, + 'missing value'); + + assert.ok(typeof (isBigEndian) === 'boolean', + 'missing or invalid endian'); + + assert.ok(offset !== undefined && offset !== null, + 'missing offset'); + + assert.ok(offset + 7 < buffer.length, + 'Trying to write beyond buffer length'); + + verifIEEE754(value, 1.7976931348623157E+308, -1.7976931348623157E+308); + } + + require('./buffer_ieee754').writeIEEE754(buffer, value, offset, isBigEndian, + 52, 8); +} + +Buffer.prototype.writeDoubleLE = function(value, offset, noAssert) { + writeDouble(this, value, offset, false, noAssert); +}; + +Buffer.prototype.writeDoubleBE = function(value, offset, noAssert) { + writeDouble(this, value, offset, true, noAssert); +}; + +SlowBuffer.prototype.readUInt8 = Buffer.prototype.readUInt8; +SlowBuffer.prototype.readUInt16LE = Buffer.prototype.readUInt16LE; +SlowBuffer.prototype.readUInt16BE = Buffer.prototype.readUInt16BE; +SlowBuffer.prototype.readUInt32LE = Buffer.prototype.readUInt32LE; +SlowBuffer.prototype.readUInt32BE = Buffer.prototype.readUInt32BE; +SlowBuffer.prototype.readInt8 = Buffer.prototype.readInt8; +SlowBuffer.prototype.readInt16LE = Buffer.prototype.readInt16LE; +SlowBuffer.prototype.readInt16BE = Buffer.prototype.readInt16BE; +SlowBuffer.prototype.readInt32LE = Buffer.prototype.readInt32LE; +SlowBuffer.prototype.readInt32BE = Buffer.prototype.readInt32BE; +SlowBuffer.prototype.readFloatLE = Buffer.prototype.readFloatLE; +SlowBuffer.prototype.readFloatBE = Buffer.prototype.readFloatBE; +SlowBuffer.prototype.readDoubleLE = Buffer.prototype.readDoubleLE; +SlowBuffer.prototype.readDoubleBE = Buffer.prototype.readDoubleBE; +SlowBuffer.prototype.writeUInt8 = Buffer.prototype.writeUInt8; +SlowBuffer.prototype.writeUInt16LE = Buffer.prototype.writeUInt16LE; +SlowBuffer.prototype.writeUInt16BE = Buffer.prototype.writeUInt16BE; +SlowBuffer.prototype.writeUInt32LE = Buffer.prototype.writeUInt32LE; +SlowBuffer.prototype.writeUInt32BE = Buffer.prototype.writeUInt32BE; +SlowBuffer.prototype.writeInt8 = Buffer.prototype.writeInt8; +SlowBuffer.prototype.writeInt16LE = Buffer.prototype.writeInt16LE; +SlowBuffer.prototype.writeInt16BE = Buffer.prototype.writeInt16BE; +SlowBuffer.prototype.writeInt32LE = Buffer.prototype.writeInt32LE; +SlowBuffer.prototype.writeInt32BE = Buffer.prototype.writeInt32BE; +SlowBuffer.prototype.writeFloatLE = Buffer.prototype.writeFloatLE; +SlowBuffer.prototype.writeFloatBE = Buffer.prototype.writeFloatBE; +SlowBuffer.prototype.writeDoubleLE = Buffer.prototype.writeDoubleLE; +SlowBuffer.prototype.writeDoubleBE = Buffer.prototype.writeDoubleBE; + +})() +},{"assert":12,"./buffer_ieee754":14,"base64-js":15}],15:[function(require,module,exports){ +(function (exports) { + 'use strict'; + + var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; + + function b64ToByteArray(b64) { + var i, j, l, tmp, placeHolders, arr; + + if (b64.length % 4 > 0) { + throw 'Invalid string. Length must be a multiple of 4'; + } + + // the number of equal signs (place holders) + // if there are two placeholders, than the two characters before it + // represent one byte + // if there is only one, then the three characters before it represent 2 bytes + // this is just a cheap hack to not do indexOf twice + placeHolders = b64.indexOf('='); + placeHolders = placeHolders > 0 ? b64.length - placeHolders : 0; + + // base64 is 4/3 + up to two characters of the original data + arr = [];//new Uint8Array(b64.length * 3 / 4 - placeHolders); + + // if there are placeholders, only get up to the last complete 4 chars + l = placeHolders > 0 ? b64.length - 4 : b64.length; + + for (i = 0, j = 0; i < l; i += 4, j += 3) { + tmp = (lookup.indexOf(b64[i]) << 18) | (lookup.indexOf(b64[i + 1]) << 12) | (lookup.indexOf(b64[i + 2]) << 6) | lookup.indexOf(b64[i + 3]); + arr.push((tmp & 0xFF0000) >> 16); + arr.push((tmp & 0xFF00) >> 8); + arr.push(tmp & 0xFF); + } + + if (placeHolders === 2) { + tmp = (lookup.indexOf(b64[i]) << 2) | (lookup.indexOf(b64[i + 1]) >> 4); + arr.push(tmp & 0xFF); + } else if (placeHolders === 1) { + tmp = (lookup.indexOf(b64[i]) << 10) | (lookup.indexOf(b64[i + 1]) << 4) | (lookup.indexOf(b64[i + 2]) >> 2); + arr.push((tmp >> 8) & 0xFF); + arr.push(tmp & 0xFF); + } + + return arr; + } + + function uint8ToBase64(uint8) { + var i, + extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes + output = "", + temp, length; + + function tripletToBase64 (num) { + return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]; + }; + + // go through the array every three bytes, we'll deal with trailing stuff later + for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) { + temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2]); + output += tripletToBase64(temp); + } + + // pad the end with zeros, but make sure to not forget the extra bytes + switch (extraBytes) { + case 1: + temp = uint8[uint8.length - 1]; + output += lookup[temp >> 2]; + output += lookup[(temp << 4) & 0x3F]; + output += '=='; + break; + case 2: + temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1]); + output += lookup[temp >> 10]; + output += lookup[(temp >> 4) & 0x3F]; + output += lookup[(temp << 2) & 0x3F]; + output += '='; + break; + } + + return output; + } + + module.exports.toByteArray = b64ToByteArray; + module.exports.fromByteArray = uint8ToBase64; +}()); + +},{}]},{},["PeVhMp"]) +; +JSHINT = require('jshint').JSHINT; +}()); \ No newline at end of file