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sly.el
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;;; sly.el --- Sylvester the Cat's Common Lisp IDE -*-lexical-binding:t-*-
;; Version: 1.0.0-beta-2
;; URL: https://github.com/joaotavora/sly
;; Package-Requires: ((emacs "24.3"))
;; Keywords: languages, lisp, sly
;; Copyright (C) 2003 Eric Marsden, Luke Gorrie, Helmut Eller
;; Copyright (C) 2004,2005,2006 Luke Gorrie, Helmut Eller
;; Copyright (C) 2007,2008,2009 Helmut Eller, Tobias C. Rittweiler
;; Copyright (C) 2014 João Távora
;; For a detailed list of contributors, see the manual.
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; _____ __ __ __
;; / ___/ / / \ \/ / |\ _,,,---,,_
;; \__ \ / / \ / /,`.-'`' -. ;-;;,_
;; ___/ / / /___ / / |,4- ) )-,_..;\ ( `'-'
;; /____/ /_____/ /_/ '---''(_/--' `-'\_)
;;
;;
;; SLY is Sylvester the Cat's Common Lisp IDE.
;;
;; SLY is a direct fork of SLIME, and contains the following
;; improvements over it:
;;
;; * Completely redesigned REPL based on Emacs's own full-featured
;; `comint.el`
;; * Live code annotations via a new `sly-stickers` contrib
;; * Consistent interactive button interface. Everything can be
;; copied to the REPL.
;; * Multiple inspectors with independent history
;; * Regexp-capable M-x sly-apropos
;; * Contribs are first class SLY citizens and enabled by default
;; * Use ASDF to loads contribs on demand.
;;
;; SLY tracks SLIME's bugfixes and all its familar features (debugger,
;; inspector, xref, etc...) are still available, but with better
;; integration.
;;
;; See the NEWS.md file (should be sitting alongside this file) for a
;; complete list of features.
;;; Code:
(require 'cl-lib)
(eval-and-compile
(if (version< emacs-version "24.3")
(error "Sly requires at least Emacs 24.3")))
(eval-and-compile
(or (require 'hyperspec nil t)
(require 'hyperspec "lib/hyperspec")))
(require 'thingatpt)
(require 'comint)
(require 'pp)
(require 'easymenu)
(require 'outline)
(require 'arc-mode)
(require 'etags)
(require 'apropos)
(require 'bytecomp) ;; for `byte-compile-current-file' and
;; `sly-byte-compile-hotspots'.
(require 'sly-common "lib/sly-common")
(require 'sly-messages "lib/sly-messages")
(require 'sly-buttons "lib/sly-buttons")
(require 'sly-completion "lib/sly-completion")
(require 'gv) ; for gv--defsetter
(eval-when-compile
(require 'compile)
(require 'gud))
(defvar sly-path nil
"Directory containing the SLY package.
This is used to load the supporting Common Lisp library, Slynk.
The default value is automatically computed from the location of the
Emacs Lisp package.")
;; Determine `sly-path' at load time, regardless of filename (.el or
;; .elc) being loaded.
;;
(setq sly-path
(if load-file-name
(file-name-directory load-file-name)
(error "[sly] fatal: impossible to determine sly-path")))
(defun sly-slynk-path ()
"Path where the bundled Slynk server is located."
(expand-file-name "slynk/" sly-path))
;;;###autoload
(define-obsolete-variable-alias 'sly-setup-contribs
'sly-contribs "2.3.2")
;;;###autoload
(defvar sly-contribs '(sly-fancy)
"A list of contrib packages to load with SLY.")
(defun sly-setup (&optional contribs)
"Have SLY load and use extension modules CONTRIBS.
CONTRIBS defaults to `sly-contribs' and is a list (LIB1 LIB2...)
symbols of `provide'd and `require'd Elisp libraries.
If CONTRIBS is nil, `sly-contribs' is *not* affected, otherwise
it is set to CONTRIBS.
However, after `require'ing LIB1, LIB2 ..., this command invokes
additional initialization steps associated with each element
LIB1, LIB2, which can theoretically be reverted by
`sly-disable-contrib.'
Notably, one of the extra initialization steps is affecting the
value of `sly-required-modules' (which see) thus affecting the
libraries loaded in the Slynk servers.
If SLY is currently connected to a Slynk and a contrib in
CONTRIBS has never been loaded, that Slynk is told to load the
associated Slynk extension module.
To ensure that a particular contrib is loaded, use
`sly-enable-contrib' instead."
;; FIXME: The contract should be like some hypothetical
;; `sly-refresh-contribs'
;;
(interactive)
(when contribs
(setq sly-contribs contribs))
(sly--setup-contribs))
(defvaralias 'sly-required-modules 'sly-contrib--required-slynk-modules)
(defvar sly-contrib--required-slynk-modules '()
"Alist of (MODULE . (WHERE CONTRIB)) for slynk-provided features.
MODULE is a symbol naming a specific Slynk feature, WHERE is
the full pathname to the directory where the file(s)
providing the feature are found and CONTRIB is a symbol as found
in `sly-contribs.'")
(cl-defmacro sly--contrib-safe (contrib &body body)
"Run BODY catching and resignalling any errors for CONTRIB"
(declare (indent 1))
`(condition-case e
(progn
,@body)
(error (sly-error "There's an error in %s: %s"
,contrib
e))))
(defun sly--setup-contribs ()
"Load and initialize contribs."
;; active != enabled
;; ^ ^
;; | |
;; v v
;; forgotten != disabled
(add-to-list 'load-path (expand-file-name "contrib" sly-path))
(mapc (lambda (c)
(sly--contrib-safe c (require c)))
sly-contribs)
(let* ((all-active-contribs
;; these are the contribs the user chose to activate
;;
(mapcar #'sly-contrib--find-contrib
(cl-reduce #'append (mapcar #'sly-contrib--all-dependencies
sly-contribs))))
(defined-but-forgotten-contribs
;; "forgotten contribs" are the ones the chose not to
;; activate but whose definitions we have seen
;;
(cl-remove-if #'(lambda (contrib)
(memq contrib all-active-contribs))
(sly-contrib--all-contribs))))
;; Disable any forgotten contribs that are enabled right now.
;;
(cl-loop for to-disable in defined-but-forgotten-contribs
when (sly--contrib-safe to-disable
(sly-contrib--enabled-p to-disable))
do (funcall (sly-contrib--disable to-disable)))
;; Enable any active contrib that is *not* enabled right now.
;;
(cl-loop for to-enable in all-active-contribs
unless (sly--contrib-safe to-enable
(sly-contrib--enabled-p to-enable))
do (funcall (sly-contrib--enable to-enable)))
;; Some contribs add stuff to `sly-mode-hook' or
;; `sly-editing-hook', so make sure we re-run those hooks now.
(when all-active-contribs
(cl-loop for buffer in (buffer-list)
do (with-current-buffer buffer
(when sly-editing-mode (sly-editing-mode 1)))))))
(eval-and-compile
(defun sly-version (&optional interactive file)
"Read SLY's version of its own sly.el file.
If FILE is passed use that instead to discover the version."
(interactive "p")
(let ((version
(with-temp-buffer
(insert-file-contents
(or file
(expand-file-name "sly.el" sly-path))
nil 0 200)
(and (search-forward-regexp
";;[[:space:]]*Version:[[:space:]]*\\(.*\\)$" nil t)
(match-string 1)))))
(if interactive
(sly-message "SLY %s" version)
version))))
(defvar sly-protocol-version nil)
(setq sly-protocol-version
;; Compile the version string into the generated .elc file, but
;; don't actualy affect `sly-protocol-version' until load-time.
;;
(eval-when-compile (sly-version nil (or load-file-name
byte-compile-current-file))))
;;;; Customize groups
;;
;;;;; sly
(defgroup sly nil
"Interaction with the Superior Lisp Environment."
:prefix "sly-"
:group 'applications)
;;;;; sly-ui
(defgroup sly-ui nil
"Interaction with the Superior Lisp Environment."
:prefix "sly-"
:group 'sly)
(defcustom sly-truncate-lines t
"Set `truncate-lines' in popup buffers.
This applies to buffers that present lines as rows of data, such as
debugger backtraces and apropos listings."
:type 'boolean
:group 'sly-ui)
(defcustom sly-kill-without-query-p nil
"If non-nil, kill SLY processes without query when quitting Emacs.
This applies to the *inferior-lisp* buffer and the network connections."
:type 'boolean
:group 'sly-ui)
;;;;; sly-lisp
(defgroup sly-lisp nil
"Lisp server configuration."
:prefix "sly-"
:group 'sly)
(defcustom sly-ignore-protocol-mismatches nil
"If non-nil, ignore protocol mismatches between SLY and Slynk.
Programatically, this variable can be let-bound around calls to
`sly' or `sly-connect'."
:type 'boolean
:group 'sly)
(defcustom sly-init-function 'sly-init-using-asdf
"Function bootstrapping slynk on the remote.
Value is a function of two arguments: SLYNK-PORTFILE and an
ingored argument for backward compatibility. Function should
return a string issuing very first commands issued by Sly to
the remote-connection process. Some time after this there should
be a port number ready in SLYNK-PORTFILE."
:type '(choice (const :tag "Use ASDF"
sly-init-using-asdf)
(const :tag "Use legacy slynk-loader.lisp"
sly-init-using-slynk-loader))
:group 'sly-lisp)
(define-obsolete-variable-alias 'sly-backend
'sly-slynk-loader-backend "3.0")
(defcustom sly-slynk-loader-backend "slynk-loader.lisp"
"The name of the slynk-loader that loads the Slynk server.
Only applicable if `sly-init-function' is set to
`sly-init-using-slynk-loader'. This name is interpreted
relative to the directory containing sly.el, but could also be
set to an absolute filename."
:type 'string
:group 'sly-lisp)
(defcustom sly-connected-hook nil
"List of functions to call when SLY connects to Lisp."
:type 'hook
:group 'sly-lisp)
(defcustom sly-enable-evaluate-in-emacs nil
"*If non-nil, the inferior Lisp can evaluate arbitrary forms in Emacs.
The default is nil, as this feature can be a security risk."
:type '(boolean)
:group 'sly-lisp)
(defcustom sly-lisp-host "localhost"
"The default hostname (or IP address) to connect to."
:type 'string
:group 'sly-lisp)
(defcustom sly-port 4005
"Port to use as the default for `sly-connect'."
:type 'integer
:group 'sly-lisp)
(defvar sly-connect-host-history (list sly-lisp-host))
(defvar sly-connect-port-history (list (prin1-to-string sly-port)))
(defvar sly-net-valid-coding-systems
'((iso-latin-1-unix nil "iso-latin-1-unix")
(iso-8859-1-unix nil "iso-latin-1-unix")
(binary nil "iso-latin-1-unix")
(utf-8-unix t "utf-8-unix")
(emacs-mule-unix t "emacs-mule-unix")
(euc-jp-unix t "euc-jp-unix"))
"A list of valid coding systems.
Each element is of the form: (NAME MULTIBYTEP CL-NAME)")
(defun sly-find-coding-system (name)
"Return the coding system for the symbol NAME.
The result is either an element in `sly-net-valid-coding-systems'
of nil."
(let ((probe (assq name sly-net-valid-coding-systems)))
(when (and probe (if (fboundp 'check-coding-system)
(ignore-errors (check-coding-system (car probe)))
(eq (car probe) 'binary)))
probe)))
(defcustom sly-net-coding-system
(car (cl-find-if 'sly-find-coding-system
sly-net-valid-coding-systems :key 'car))
"Coding system used for network connections.
See also `sly-net-valid-coding-systems'."
:type (cons 'choice
(mapcar (lambda (x)
(list 'const (car x)))
sly-net-valid-coding-systems))
:group 'sly-lisp)
;;;;; sly-mode
(defgroup sly-mode nil
"Settings for sly-mode Lisp source buffers."
:prefix "sly-"
:group 'sly)
;;;;; sly-mode-faces
(defgroup sly-mode-faces nil
"Faces in sly-mode source code buffers."
:prefix "sly-"
:group 'sly-mode)
(defface sly-error-face
`((((class color) (background light))
(:underline "tomato"))
(((class color) (background dark))
(:underline "tomato"))
(t (:underline t)))
"Face for errors from the compiler."
:group 'sly-mode-faces)
(defface sly-warning-face
`((((class color) (background light))
(:underline "orange"))
(((class color) (background dark))
(:underline "coral"))
(t (:underline t)))
"Face for warnings from the compiler."
:group 'sly-mode-faces)
(defface sly-style-warning-face
`((((class color) (background light))
(:underline "olive drab"))
(((class color) (background dark))
(:underline "khaki"))
(t (:underline t)))
"Face for style-warnings from the compiler."
:group 'sly-mode-faces)
(defface sly-note-face
`((((class color) (background light))
(:underline "brown3"))
(((class color) (background dark))
(:underline "light goldenrod"))
(t (:underline t)))
"Face for notes from the compiler."
:group 'sly-mode-faces)
;;;;; sly-db
(defgroup sly-debugger nil
"Backtrace options and fontification."
:prefix "sly-db-"
:group 'sly)
(defmacro define-sly-db-faces (&rest faces)
"Define the set of SLY-DB faces.
Each face specifiation is (NAME DESCRIPTION &optional PROPERTIES).
NAME is a symbol; the face will be called sly-db-NAME-face.
DESCRIPTION is a one-liner for the customization buffer.
PROPERTIES specifies any default face properties."
`(progn ,@(cl-loop for face in faces
collect `(define-sly-db-face ,@face))))
(defmacro define-sly-db-face (name description &optional default)
(let ((facename (intern (format "sly-db-%s-face" (symbol-name name)))))
`(defface ,facename
(list (list t ,default))
,(format "Face for %s." description)
:group 'sly-debugger)))
(define-sly-db-faces
(topline "the top line describing the error")
(condition "the condition class" '(:inherit error))
(section "the labels of major sections in the debugger buffer"
'(:inherit header-line))
(frame-label "backtrace frame numbers"
'(:inherit shadow))
(restart "restart descriptions")
(restart-number "restart numbers (correspond to keystrokes to invoke)"
'(:inherit shadow))
(frame-line "function names and arguments in the backtrace")
(restartable-frame-line
"frames which are surely restartable"
'(:inherit font-lock-constant-face))
(non-restartable-frame-line
"frames which are surely not restartable")
(local-name "local variable names")
(catch-tag "catch tags"))
;;;;; Key bindings
(defvar sly-doc-map
(let ((map (make-sparse-keymap)))
(define-key map (kbd "C-a") 'sly-apropos)
(define-key map (kbd "C-z") 'sly-apropos-all)
(define-key map (kbd "C-p") 'sly-apropos-package)
(define-key map (kbd "C-d") 'sly-describe-symbol)
(define-key map (kbd "C-f") 'sly-describe-function)
(define-key map (kbd "C-h") 'sly-documentation-lookup)
(define-key map (kbd "~") 'common-lisp-hyperspec-format)
(define-key map (kbd "C-g") 'common-lisp-hyperspec-glossary-term)
(define-key map (kbd "#") 'common-lisp-hyperspec-lookup-reader-macro)
map))
(defvar sly-who-map
(let ((map (make-sparse-keymap)))
(define-key map (kbd "C-c") 'sly-who-calls)
(define-key map (kbd "C-w") 'sly-calls-who)
(define-key map (kbd "C-r") 'sly-who-references)
(define-key map (kbd "C-b") 'sly-who-binds)
(define-key map (kbd "C-s") 'sly-who-sets)
(define-key map (kbd "C-m") 'sly-who-macroexpands)
(define-key map (kbd "C-a") 'sly-who-specializes)
map))
(defvar sly-selector-map (let ((map (make-sparse-keymap)))
(define-key map "c" 'sly-list-connections)
(define-key map "t" 'sly-list-threads)
(define-key map "d" 'sly-db-pop-to-debugger-maybe)
(define-key map "e" 'sly-pop-to-events-buffer)
(define-key map "i" 'sly-inferior-lisp-buffer)
(define-key map "l" 'sly-switch-to-most-recent)
map)
"A keymap for frequently used SLY shortcuts.
Access to this keymap can be installed in in
`sly-mode-map', using something like
(global-set-key (kbd \"C-z\") sly-selector-map)
This will bind C-z to this prefix map, one keystroke away from
the available shortcuts:
\\{sly-selector-map}
As usual, users or extensions can plug in
any command into it using
(define-key sly-selector-map (kbd \"k\") 'sly-command)
Where \"k\" is the key to bind and \"sly-command\" is any
interactive command.\".")
(defvar sly-prefix-map
(let ((map (make-sparse-keymap)))
(define-key map (kbd "C-r") 'sly-eval-region)
(define-key map (kbd ":") 'sly-interactive-eval)
(define-key map (kbd "C-e") 'sly-interactive-eval)
(define-key map (kbd "E") 'sly-edit-value)
(define-key map (kbd "C-l") 'sly-load-file)
(define-key map (kbd "C-b") 'sly-interrupt)
(define-key map (kbd "M-d") 'sly-disassemble-symbol)
(define-key map (kbd "C-t") 'sly-toggle-trace-fdefinition)
(define-key map (kbd "I") 'sly-inspect)
(define-key map (kbd "C-x t") 'sly-list-threads)
(define-key map (kbd "C-x n") 'sly-next-connection)
(define-key map (kbd "C-x c") 'sly-list-connections)
(define-key map (kbd "C-x p") 'sly-prev-connection)
(define-key map (kbd "<") 'sly-list-callers)
(define-key map (kbd ">") 'sly-list-callees)
;; Include DOC keys...
(define-key map (kbd "C-d") sly-doc-map)
;; Include XREF WHO-FOO keys...
(define-key map (kbd "C-w") sly-who-map)
;; `sly-selector-map' used to be bound to "C-c C-s" by default,
;; but sly-stickers has a better binding for that.
;;
;; (define-key map (kbd "C-s") sly-selector-map)
map))
(defvar sly-mode-map
(let ((map (make-sparse-keymap)))
;; These used to be a `sly-parent-map'
(define-key map (kbd "M-.") 'sly-edit-definition)
(define-key map (kbd "M-,") 'sly-pop-find-definition-stack)
(define-key map (kbd "M-_") 'sly-edit-uses) ; for German layout
(define-key map (kbd "M-?") 'sly-edit-uses) ; for USian layout
(define-key map (kbd "C-x 4 .") 'sly-edit-definition-other-window)
(define-key map (kbd "C-x 5 .") 'sly-edit-definition-other-frame)
(define-key map (kbd "C-x C-e") 'sly-eval-last-expression)
(define-key map (kbd "C-M-x") 'sly-eval-defun)
;; Include PREFIX keys...
(define-key map (kbd "C-c") sly-prefix-map)
;; Completion
(define-key map (kbd "C-c TAB") 'completion-at-point)
;; Evaluating
(define-key map (kbd "C-c C-p") 'sly-pprint-eval-last-expression)
;; Macroexpand
(define-key map (kbd "C-c C-m") 'sly-expand-1)
(define-key map (kbd "C-c M-m") 'sly-macroexpand-all)
;; Misc
(define-key map (kbd "C-c C-u") 'sly-undefine-function)
map))
(defvar sly-editing-mode-map
(let ((map (make-sparse-keymap)))
(define-key map (kbd "M-p") 'sly-previous-note)
(define-key map (kbd "M-n") 'sly-next-note)
(define-key map (kbd "C-c M-c") 'sly-remove-notes)
(define-key map (kbd "C-c C-k") 'sly-compile-and-load-file)
(define-key map (kbd "C-c M-k") 'sly-compile-file)
(define-key map (kbd "C-c C-c") 'sly-compile-defun)
map))
(defvar sly-popup-buffer-mode-map
(let ((map (make-sparse-keymap)))
(define-key map (kbd "q") 'quit-window)
map))
;;;; Minor modes
;;;;; sly-mode
(defvar sly-buffer-connection)
(defvar sly-dispatching-connection)
(defvar sly-current-thread)
;; exceptional forward decl
(defvar company-tooltip-align-annotations)
;;;###autoload
(define-minor-mode sly-mode
"Minor mode for horizontal SLY functionality."
nil nil nil
;; Company-mode should have this by default
;; See gh#166
(set (make-local-variable 'company-tooltip-align-annotations) t))
;;;###autoload
(define-minor-mode sly-editing-mode
"Minor mode for editing `lisp-mode' buffers."
nil nil nil
(sly-mode 1)
(set (make-local-variable 'lisp-indent-function)
'common-lisp-indent-function))
(define-minor-mode sly-popup-buffer-mode
"Minor mode for all read-only SLY buffers"
nil nil nil
(sly-mode 1)
(sly-interactive-buttons-mode 1)
(setq buffer-read-only t))
;;;;;; Mode-Line
(defface sly-mode-line
'((t (:inherit font-lock-constant-face
:weight bold)))
"Face for package-name in SLY's mode line."
:group 'sly)
(defvar sly--mode-line-format `(:eval (sly--mode-line-format)))
(put 'sly--mode-line-format 'risky-local-variable t)
(defvar sly-menu) ;; forward referenced
(defvar sly-extra-mode-line-constructs nil
"A list of mode-line constructs to add to SLY's mode-line.
Each construct is separated by a \"/\" and may be a regular
mode-line construct or a symbol naming a function of no arguments
that returns one such construct.")
(defun sly--mode-line-format ()
(let* ((conn (sly-current-connection))
(conn (and (process-live-p conn) conn))
(name (or (and conn
(sly-connection-name conn))
"*"))
(pkg (sly-current-package))
(format-number (lambda (n) (cond ((and n (not (zerop n)))
(format "%d" n))
(n "-")
(t "*"))))
(package-name (and pkg
(sly--pretty-package-name pkg)))
(pending (and conn
(length (sly-rex-continuations conn))))
(sly-dbs (and conn (length (sly-db-buffers conn)))))
`((:propertize "sly"
face sly-mode-line
keymap ,(let ((map (make-sparse-keymap)))
(define-key map [mode-line down-mouse-1]
sly-menu)
map)
mouse-face mode-line-highlight
help-echo "mouse-1: pop-up SLY menu"
)
" "
(:propertize ,name
face sly-mode-line
keymap ,(let ((map (make-sparse-keymap)))
(define-key map [mode-line mouse-1] 'sly-prev-connection)
(define-key map [mode-line mouse-2] 'sly-list-connections)
(define-key map [mode-line mouse-3] 'sly-next-connection)
map)
mouse-face mode-line-highlight
help-echo ,(concat "mouse-1: previous connection\n"
"mouse-2: list connections\n"
"mouse-3: next connection"))
"/"
,(or package-name "*")
"/"
(:propertize ,(funcall format-number pending)
help-echo ,(if conn (format "%s pending events outgoing\n%s"
pending
(concat "mouse-1: go to *sly-events* buffer"
"mouse-3: forget pending continuations"))
"No current connection")
mouse-face mode-line-highlight
face ,(cond ((and pending (cl-plusp pending))
'warning)
(t
'sly-mode-line))
keymap ,(let ((map (make-sparse-keymap)))
(define-key map [mode-line mouse-1] 'sly-pop-to-events-buffer)
(define-key map [mode-line mouse-3] 'sly-forget-pending-events)
map))
"/"
(:propertize ,(funcall format-number sly-dbs)
help-echo ,(if conn (format "%s SLY-DB buffers waiting\n%s"
pending
"mouse-1: go to first one")
"No current connection")
mouse-face mode-line-highlight
face ,(cond ((and sly-dbs (cl-plusp sly-dbs))
'warning)
(t
'sly-mode-line))
keymap ,(let ((map (make-sparse-keymap)))
(define-key map [mode-line mouse-1] 'sly-db-pop-to-debugger)
map))
,@(cl-loop for construct in sly-extra-mode-line-constructs
collect "/"
collect (if (and (symbolp construct)
(fboundp construct))
(condition-case _oops
(funcall construct)
(error "*sly-invalid*"))
construct)))))
(defun sly--refresh-mode-line ()
(force-mode-line-update t))
(defun sly--pretty-package-name (name)
"Return a pretty version of a package name NAME."
(cond ((string-match "^#?:\\(.*\\)$" name)
(match-string 1 name))
((string-match "^\"\\(.*\\)\"$" name)
(match-string 1 name))
(t name)))
(add-to-list 'mode-line-misc-info
`(sly-mode (" [" sly--mode-line-format "] ")))
;;;; Framework'ey bits
;;;
;;; This section contains some standard SLY idioms: basic macros,
;;; ways of showing messages to the user, etc. All the code in this
;;; file should use these functions when applicable.
;;;
;;;;; Syntactic sugar
(cl-defmacro sly--when-let ((var value) &rest body)
"Evaluate VALUE, if the result is non-nil bind it to VAR and eval BODY.
\(fn (VAR VALUE) &rest BODY)"
(declare (indent 1))
`(let ((,var ,value))
(when ,var ,@body)))
(cl-defmacro sly--when-let* (bindings &rest body)
"Same as `sly--when-let', but for multiple BINDINGS"
(declare (indent 1))
(if bindings
`(sly--when-let ,(car bindings)
(sly--when-let* ,(cdr bindings) ,@body))
`(progn ,@body)))
(defmacro sly-dcase (value &rest patterns)
(declare (indent 1)
(debug (sexp &rest (sexp &rest form))))
"Dispatch VALUE to one of PATTERNS.
A cross between `case' and `destructuring-bind'.
The pattern syntax is:
((HEAD . ARGS) . BODY)
The list of patterns is searched for a HEAD `eq' to the car of
VALUE. If one is found, the BODY is executed with ARGS bound to the
corresponding values in the CDR of VALUE."
(let ((operator (cl-gensym "op-"))
(operands (cl-gensym "rand-"))
(tmp (cl-gensym "tmp-")))
`(let* ((,tmp ,value)
(,operator (car ,tmp))
(,operands (cdr ,tmp)))
(cl-case ,operator
,@(mapcar (lambda (clause)
(if (eq (car clause) t)
`(t ,@(cdr clause))
(cl-destructuring-bind ((op &rest rands) &rest body)
clause
`(,op (cl-destructuring-bind ,rands ,operands
. ,(or body
'((ignore)) ; suppress some warnings
))))))
patterns)
,@(if (eq (caar (last patterns)) t)
'()
`((t (sly-error "Elisp sly-dcase failed: %S" ,tmp))))))))
;;;;; Very-commonly-used functions
;; Interface
(cl-defun sly-buffer-name (type &key connection hidden suffix)
(cl-assert (keywordp type))
(mapconcat #'identity
`(,@(if hidden `(" "))
"*sly-"
,(downcase (substring (symbol-name type) 1))
,@(if connection
`(" for "
,(sly-connection-name
(if (eq connection t)
(sly-current-connection)
connection))))
,@(if suffix
`(" ("
,suffix
")"))
"*")
""))
(defun sly-recenter (target &optional move-point)
"Make the region between point and TARGET visible.
Minimize window motion if possible. If MOVE-POINT allow point to
move to make TARGET visible."
(unless (pos-visible-in-window-p target)
(redisplay)
(let ((screen-line (- (line-number-at-pos)
(line-number-at-pos (window-start))))
(window-end (line-number-at-pos (window-end)))
(window-start (line-number-at-pos (window-start)))
(target-line (line-number-at-pos target))
recenter-arg)
(cond ((> (point) target)
(setq recenter-arg (+ screen-line (- window-start target-line)))
(if (or (not move-point)
(<= recenter-arg (window-height)))
(recenter recenter-arg)
(goto-char target)
(recenter -1)
(move-to-window-line -1)))
((<= (point) target)
(setq recenter-arg (- screen-line (- target-line window-end)))
(if (or (not move-point)
(> recenter-arg 0))
(recenter (max recenter-arg 0))
(goto-char target)
(recenter 0)
(move-to-window-line 0)))))))
;; Interface
(defun sly-set-truncate-lines ()
"Apply `sly-truncate-lines' to the current buffer."
(when sly-truncate-lines
(set (make-local-variable 'truncate-lines) t)))
;; Interface
(defun sly-read-package-name (prompt &optional initial-value allow-blank)
"Read a package name from the minibuffer, prompting with PROMPT.
If ALLOW-BLANK may return nil to signal no particular package
selected."
(let* ((completion-ignore-case t)
(res (sly-completing-read
(concat "[sly] " prompt)
(sly-eval
`(slynk:list-all-package-names t))
nil (not allow-blank) initial-value)))
(unless (zerop (length res))
res)))
;; Interface
(defmacro sly-propertize-region (props &rest body)
"Execute BODY and add PROPS to all the text it inserts.
More precisely, PROPS are added to the region between the point's
positions before and after executing BODY."
(declare (indent 1) (debug (sexp &rest form)))
(let ((start (cl-gensym)))
`(let ((,start (point)))
(prog1 (progn ,@body)
(add-text-properties ,start (point) ,props)))))
(defun sly-add-face (face string)
(declare (indent 1))
(add-text-properties 0 (length string) (list 'face face) string)
string)
;; Interface
(defsubst sly-insert-propertized (props &rest args)
"Insert all ARGS and then add text-PROPS to the inserted text."
(sly-propertize-region props (apply #'insert args)))
(defmacro sly-with-rigid-indentation (level &rest body)
"Execute BODY and then rigidly indent its text insertions.
Assumes all insertions are made at point."
(declare (indent 1))
(let ((start (cl-gensym)) (l (cl-gensym)))
`(let ((,start (point)) (,l ,(or level '(current-column))))
(prog1 (progn ,@body)
(sly-indent-rigidly ,start (point) ,l)))))
(defun sly-indent-rigidly (start end column)
;; Similar to `indent-rigidly' but doesn't inherit text props.
(let ((indent (make-string column ?\ )))
(save-excursion
(goto-char end)
(beginning-of-line)
(while (and (<= start (point))
(progn
(insert-before-markers indent)
(zerop (forward-line -1))))))))
(defun sly-insert-indented (&rest strings)
"Insert all arguments rigidly indented."
(sly-with-rigid-indentation nil
(apply #'insert strings)))
(defun sly-compose (&rest functions)
"Compose unary FUNCTIONS right-associatively, returning a function"
#'(lambda (x)
(cl-reduce #'funcall functions :initial-value x :from-end t)))
(defun sly-curry (fun &rest args)
"Partially apply FUN to ARGS. The result is a new function."
(lambda (&rest more) (apply fun (append args more))))
(defun sly-rcurry (fun &rest args)
"Like `sly-curry' but ARGS on the right are applied."
(lambda (&rest more) (apply fun (append more args))))
;;;;; Temporary popup buffers
;; keep compiler quiet
(defvar sly-buffer-package)
(defvar sly-buffer-connection)
;; Interface
(cl-defmacro sly-with-popup-buffer ((name &key package connection select
same-window-p
mode)
&body body)
"Similar to `with-output-to-temp-buffer'.
Bind standard-output and initialize some buffer-local variables.
Restore window configuration when closed. NAME is the name of
the buffer to be created. PACKAGE is the value
`sly-buffer-package'. CONNECTION is the value for
`sly-buffer-connection', if nil, no explicit connection is
associated with the buffer. If t, the current connection is
taken. MODE is the name of a major mode which will be enabled.
Non-nil SELECT indicates the buffer should be switched to, unless
it is `:hidden' meaning the buffer should not even be
displayed. SELECT can also be `:raise' meaning the buffer should
be switched to and the frame raised. SAME-WINDOW-P is a form
indicating if the popup *can* happen in the same window. The
forms SELECT and SAME-WINDOW-P are evaluated at runtime, not
macroexpansion time.
"
(declare (indent 1)
(debug (sexp &rest form)))
(let* ((package-sym (cl-gensym "package-"))
(connection-sym (cl-gensym "connection-"))
(select-sym (cl-gensym "select"))
(major-mode-sym (cl-gensym "select")))
`(let ((,package-sym ,(if (eq package t)
`(sly-current-package)
package))
(,connection-sym ,(if (eq connection t)
`(sly-current-connection)
connection))
(,major-mode-sym major-mode)
(,select-sym ,select)
(view-read-only nil))
(with-current-buffer (get-buffer-create ,name)
(let ((inhibit-read-only t)
(standard-output (current-buffer)))
(erase-buffer)
,@(cond (mode
`((funcall ,mode)))
(t
`((sly-popup-buffer-mode 1))))
(setq sly-buffer-package ,package-sym
sly-buffer-connection ,connection-sym)
(set-syntax-table lisp-mode-syntax-table)
,@body
(unless (eq ,select-sym :hidden)
(let ((window (display-buffer
(current-buffer)
(if ,(cond (same-window-p same-window-p)
(mode `(eq ,major-mode-sym ,mode)))
nil
t))))
(when ,select-sym
(if window
(select-window window t))))
(if (eq ,select-sym :raise) (raise-frame)))
(current-buffer))))))
;;;;; Filename translation
;;;
;;; Filenames passed between Emacs and Lisp should be translated using
;;; these functions. This way users who run Emacs and Lisp on separate
;;; machines have a chance to integrate file operations somehow.
(defvar sly-to-lisp-filename-function #'convert-standard-filename
"Function to translate Emacs filenames to CL namestrings.")
(defvar sly-from-lisp-filename-function #'identity
"Function to translate CL namestrings to Emacs filenames.")
(defun sly-to-lisp-filename (filename)
"Translate the string FILENAME to a Lisp filename."
(funcall sly-to-lisp-filename-function filename))
(defun sly-from-lisp-filename (filename)
"Translate the Lisp filename FILENAME to an Emacs filename."
(funcall sly-from-lisp-filename-function filename))
;;;; Starting SLY
;;;
;;; This section covers starting an inferior-lisp, compiling and
;;; starting the server, initiating a network connection.
;;;;; Entry points
;; We no longer load inf-lisp, but we use this variable for backward