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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
|
|
||
| func add($a,$b) { | ||
| return $a + $b | ||
| } | ||
|
|
||
| $res = add(1,2) | ||
|
|
||
| print($res) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| "use strict"; | ||
| Object.defineProperty(exports, "__esModule", { value: true }); | ||
| exports.parseExpression = void 0; | ||
| const lexer1_1 = require("../lexer1"); | ||
| const parser_1 = require("../parser"); | ||
| const Assignment_1 = require("./Assignment"); | ||
| function parseExpression(lexer) { | ||
| const ExpressionStatement = { | ||
| type: "ExpressionStatement", | ||
| expression: { | ||
| type: "CallExpression", | ||
| callee: { | ||
| type: "Identifier", | ||
| }, | ||
| arguments: [] | ||
| } | ||
| }; | ||
| const IdentifierName = parser_1.parseName(lexer); | ||
| ExpressionStatement.expression.callee.name = IdentifierName; | ||
| lexer.NextTokenIs(lexer1_1.TOKEN_LEFT_PAREN); // ( | ||
| const params = []; | ||
| const tokenType = lexer.LookAhead().tokenType; | ||
| while (tokenType !== lexer1_1.TOKEN_RIGHT_PAREN) { | ||
| let p; | ||
| // $ | ||
| if (tokenType === lexer1_1.TOKEN_VAR_PREFIX) { | ||
| p = parser_1.parseVariable(lexer); | ||
| params.push(new Assignment_1.Identifier(p)); | ||
| } | ||
| else if (tokenType === lexer1_1.NUMBER) { | ||
| p = parser_1.parseNumber(lexer); | ||
| params.push(new Assignment_1.Literal(p)); | ||
| } | ||
| if (lexer.nextTokenType === lexer1_1.TOKEN_RIGHT_PAREN) { | ||
| break; | ||
| } | ||
| lexer.NextTokenIs(lexer1_1.TOKEN_FUNC_PARAMS_DIV); // , | ||
| } | ||
| lexer.NextTokenIs(lexer1_1.TOKEN_RIGHT_PAREN); // ) | ||
| lexer.LookAheadAndSkip(lexer1_1.TOKEN_IGNORED); // 空格 | ||
| ExpressionStatement.expression.arguments = params; | ||
| return ExpressionStatement; | ||
| } | ||
| exports.parseExpression = parseExpression; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| "use strict"; | ||
| Object.defineProperty(exports, "__esModule", { value: true }); | ||
| exports.paseReturnStatement = exports.paseBlock = exports.parseFunction = void 0; | ||
| const lexer1_1 = require("../lexer1"); | ||
| const parser_1 = require("../parser"); | ||
| const Assignment_1 = require("./Assignment"); | ||
| function parseFunction(lexer) { | ||
| const FunctionDeclaration = { | ||
| type: "FunctionDeclaration", | ||
| id: { | ||
| type: "Identifier", | ||
| }, | ||
| params: [ | ||
| // { | ||
| // type: "Identifier", | ||
| // name: "" | ||
| // } | ||
| ], | ||
| body: { | ||
| type: "BlockStatement", | ||
| body: [ | ||
| // { | ||
| // type: "ReturnStatement", | ||
| // argument: { | ||
| // type: "BinaryExpression", | ||
| // left: { | ||
| // }, | ||
| // operator: '+', | ||
| // right: { | ||
| // } | ||
| // } | ||
| // } | ||
| ] | ||
| } | ||
| }; | ||
| lexer.NextTokenIs(lexer1_1.TOKEN_FUNC); | ||
| lexer.LookAheadAndSkip(lexer1_1.TOKEN_IGNORED); // 空格 | ||
| const Identifier = parser_1.parseName(lexer); | ||
| FunctionDeclaration.id.name = Identifier; | ||
| lexer.NextTokenIs(lexer1_1.TOKEN_LEFT_PAREN); // ( | ||
| const params = []; | ||
| while (lexer.LookAhead().tokenType !== lexer1_1.TOKEN_RIGHT_PAREN) { | ||
| const p = parser_1.parseVariable(lexer); | ||
| params.push(p); | ||
| if (lexer.nextTokenType === lexer1_1.TOKEN_RIGHT_PAREN) { | ||
| break; | ||
| } | ||
| lexer.NextTokenIs(lexer1_1.TOKEN_FUNC_PARAMS_DIV); | ||
| } | ||
| for (let item of params) { | ||
| FunctionDeclaration.params.push({ | ||
| type: "Identifier", | ||
| name: item.Name | ||
| }); | ||
| } | ||
| lexer.NextTokenIs(lexer1_1.TOKEN_RIGHT_PAREN); // ) | ||
| lexer.LookAheadAndSkip(lexer1_1.TOKEN_IGNORED); // 去除空格回车等 | ||
| lexer.NextTokenIs(lexer1_1.BLOCK_START); | ||
| lexer.LookAheadAndSkip(lexer1_1.TOKEN_IGNORED); // 去除空格回车等 | ||
| const block = paseBlock(lexer); | ||
| FunctionDeclaration.body.body.push({ | ||
| type: "ReturnStatement", | ||
| argument: block.declarations[0].init | ||
| }); | ||
| lexer.NextTokenIs(lexer1_1.BLOCK_END); | ||
| lexer.LookAheadAndSkip(lexer1_1.TOKEN_IGNORED); | ||
| return FunctionDeclaration; | ||
| } | ||
| exports.parseFunction = parseFunction; | ||
| function paseBlock(lexer) { | ||
| const ahead = lexer.LookAhead(); | ||
| if (ahead.tokenType === lexer1_1.TOKEN_RETURN) { | ||
| lexer.NextTokenIs(lexer1_1.TOKEN_RETURN); | ||
| lexer.LookAheadAndSkip(lexer1_1.TOKEN_IGNORED); | ||
| return paseReturnStatement(lexer); | ||
| } | ||
| } | ||
| exports.paseBlock = paseBlock; | ||
| function paseReturnStatement(lexer) { | ||
| let assignment = new Assignment_1.Assignment(); | ||
| assignment.LineNum = lexer.GetLineNum(); | ||
| assignment.declarations = []; | ||
| let VariableDeclarator = { type: "VariableDeclarator" }; | ||
| VariableDeclarator.id = { type: "Identifier" }; | ||
| const tokenType = lexer.LookAhead().tokenType; | ||
| console.log(tokenType, 'lexer.LookAhead().tokenType'); | ||
| // 如果后面仍是$ | ||
| if (tokenType === lexer1_1.TOKEN_VAR_PREFIX) { | ||
| const Variable = parser_1.parseVariable(lexer); // 标识符,这里面会把邻近的空格回车删掉 | ||
| console.log(Variable, 'Variable'); | ||
| const identifier = new Assignment_1.Identifier(Variable.Name); | ||
| VariableDeclarator.init = identifier; | ||
| assignment.type = "VariableDeclaration"; | ||
| assignment.declarations.push(VariableDeclarator); // 一行只允许声明和初始化一个变量 | ||
| let ahead = lexer.LookAhead(); | ||
| console.log(ahead, 'parseAssignment Variable ahead'); | ||
| if (ahead.tokenType !== lexer1_1.Operator) { | ||
| return assignment; | ||
| } | ||
| else { | ||
| lexer.NextTokenIs(lexer1_1.Operator); // +-*/ | ||
| // lexer.LookAheadAndSkip(TOKEN_IGNORED) // 空格 | ||
| lexer.isIgnored(); | ||
| const idAndinit = assignment.declarations.pop(); | ||
| return Assignment_1.parseBinaryExpression(lexer, idAndinit, assignment, "Identifier"); | ||
| } | ||
| } | ||
| else { | ||
| if (tokenType === lexer1_1.NUMBER) { | ||
| // console.log('parseNumber start') | ||
| const literial = new Assignment_1.Literal(parser_1.parseNumber(lexer)); // 这里面会把邻近的空格回车删掉 | ||
| VariableDeclarator.init = literial; | ||
| assignment.type = "VariableDeclaration"; | ||
| // console.log('parseNumber end') | ||
| } | ||
| else { | ||
| const literial = new Assignment_1.Literal(parser_1.parseString(lexer)); // 这里面会把邻近的空格回车删掉 | ||
| VariableDeclarator.init = literial; | ||
| assignment.type = "VariableDeclaration"; | ||
| } | ||
| assignment.declarations.push(VariableDeclarator); // 一行只允许声明和初始化一个变量 | ||
| let ahead = lexer.LookAhead(); | ||
| console.log(ahead, 'parseAssignment not Variable ahead'); | ||
| if (ahead.tokenType !== lexer1_1.Operator) { | ||
| return assignment; | ||
| } | ||
| else { | ||
| lexer.NextTokenIs(lexer1_1.Operator); // +-*/ | ||
| // lexer.LookAheadAndSkip(TOKEN_IGNORED); // 空格 | ||
| lexer.isIgnored(); | ||
| const idAndinit = assignment.declarations.pop(); | ||
| return Assignment_1.parseBinaryExpression(lexer, idAndinit, assignment, "Literal"); | ||
| } | ||
| } | ||
| } | ||
| exports.paseReturnStatement = paseReturnStatement; |
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