mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-24 10:38:38 +00:00
1441 lines
57 KiB
EmacsLisp
1441 lines
57 KiB
EmacsLisp
;;; lisp-mode.el --- Lisp mode, and its idiosyncratic commands
|
|
|
|
;; Copyright (C) 1985, 1986, 1999, 2000, 2001, 2002, 2003, 2004,
|
|
;; 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
|
|
|
|
;; Maintainer: FSF
|
|
;; Keywords: lisp, languages
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs 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.
|
|
|
|
;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; The base major mode for editing Lisp code (used also for Emacs Lisp).
|
|
;; This mode is documented in the Emacs manual.
|
|
|
|
;;; Code:
|
|
|
|
(defvar font-lock-comment-face)
|
|
(defvar font-lock-doc-face)
|
|
(defvar font-lock-keywords-case-fold-search)
|
|
(defvar font-lock-string-face)
|
|
|
|
(defvar lisp-mode-abbrev-table nil)
|
|
|
|
(define-abbrev-table 'lisp-mode-abbrev-table ())
|
|
|
|
(defvar emacs-lisp-mode-syntax-table
|
|
(let ((table (make-syntax-table)))
|
|
(let ((i 0))
|
|
(while (< i ?0)
|
|
(modify-syntax-entry i "_ " table)
|
|
(setq i (1+ i)))
|
|
(setq i (1+ ?9))
|
|
(while (< i ?A)
|
|
(modify-syntax-entry i "_ " table)
|
|
(setq i (1+ i)))
|
|
(setq i (1+ ?Z))
|
|
(while (< i ?a)
|
|
(modify-syntax-entry i "_ " table)
|
|
(setq i (1+ i)))
|
|
(setq i (1+ ?z))
|
|
(while (< i 128)
|
|
(modify-syntax-entry i "_ " table)
|
|
(setq i (1+ i)))
|
|
(modify-syntax-entry ?\s " " table)
|
|
;; Non-break space acts as whitespace.
|
|
(modify-syntax-entry ?\x8a0 " " table)
|
|
(modify-syntax-entry ?\t " " table)
|
|
(modify-syntax-entry ?\f " " table)
|
|
(modify-syntax-entry ?\n "> " table)
|
|
;; This is probably obsolete since nowadays such features use overlays.
|
|
;; ;; Give CR the same syntax as newline, for selective-display.
|
|
;; (modify-syntax-entry ?\^m "> " table)
|
|
(modify-syntax-entry ?\; "< " table)
|
|
(modify-syntax-entry ?` "' " table)
|
|
(modify-syntax-entry ?' "' " table)
|
|
(modify-syntax-entry ?, "' " table)
|
|
(modify-syntax-entry ?@ "' " table)
|
|
;; Used to be singlequote; changed for flonums.
|
|
(modify-syntax-entry ?. "_ " table)
|
|
(modify-syntax-entry ?# "' " table)
|
|
(modify-syntax-entry ?\" "\" " table)
|
|
(modify-syntax-entry ?\\ "\\ " table)
|
|
(modify-syntax-entry ?\( "() " table)
|
|
(modify-syntax-entry ?\) ")( " table)
|
|
(modify-syntax-entry ?\[ "(] " table)
|
|
(modify-syntax-entry ?\] ")[ " table))
|
|
table))
|
|
|
|
(defvar lisp-mode-syntax-table
|
|
(let ((table (copy-syntax-table emacs-lisp-mode-syntax-table)))
|
|
(modify-syntax-entry ?\[ "_ " table)
|
|
(modify-syntax-entry ?\] "_ " table)
|
|
(modify-syntax-entry ?# "' 14b" table)
|
|
(modify-syntax-entry ?| "\" 23bn" table)
|
|
table))
|
|
|
|
(defvar lisp-imenu-generic-expression
|
|
(list
|
|
(list nil
|
|
(purecopy (concat "^\\s-*("
|
|
(eval-when-compile
|
|
(regexp-opt
|
|
'("defun" "defun*" "defsubst" "defmacro"
|
|
"defadvice" "define-skeleton"
|
|
"define-minor-mode" "define-global-minor-mode"
|
|
"define-globalized-minor-mode"
|
|
"define-derived-mode" "define-generic-mode"
|
|
"define-compiler-macro" "define-modify-macro"
|
|
"defsetf" "define-setf-expander"
|
|
"define-method-combination"
|
|
"defgeneric" "defmethod") t))
|
|
"\\s-+\\(\\(\\sw\\|\\s_\\)+\\)"))
|
|
2)
|
|
(list (purecopy "Variables")
|
|
(purecopy (concat "^\\s-*("
|
|
(eval-when-compile
|
|
(regexp-opt
|
|
'("defvar" "defconst" "defconstant" "defcustom"
|
|
"defparameter" "define-symbol-macro") t))
|
|
"\\s-+\\(\\(\\sw\\|\\s_\\)+\\)"))
|
|
2)
|
|
(list (purecopy "Types")
|
|
(purecopy (concat "^\\s-*("
|
|
(eval-when-compile
|
|
(regexp-opt
|
|
'("defgroup" "deftheme" "deftype" "defstruct"
|
|
"defclass" "define-condition" "define-widget"
|
|
"defface" "defpackage") t))
|
|
"\\s-+'?\\(\\(\\sw\\|\\s_\\)+\\)"))
|
|
2))
|
|
|
|
"Imenu generic expression for Lisp mode. See `imenu-generic-expression'.")
|
|
|
|
;; This was originally in autoload.el and is still used there.
|
|
(put 'autoload 'doc-string-elt 3)
|
|
(put 'defun 'doc-string-elt 3)
|
|
(put 'defun* 'doc-string-elt 3)
|
|
(put 'defvar 'doc-string-elt 3)
|
|
(put 'defcustom 'doc-string-elt 3)
|
|
(put 'deftheme 'doc-string-elt 2)
|
|
(put 'defconst 'doc-string-elt 3)
|
|
(put 'defmacro 'doc-string-elt 3)
|
|
(put 'defmacro* 'doc-string-elt 3)
|
|
(put 'defsubst 'doc-string-elt 3)
|
|
(put 'defstruct 'doc-string-elt 2)
|
|
(put 'define-skeleton 'doc-string-elt 2)
|
|
(put 'define-derived-mode 'doc-string-elt 4)
|
|
(put 'define-compilation-mode 'doc-string-elt 3)
|
|
(put 'easy-mmode-define-minor-mode 'doc-string-elt 2)
|
|
(put 'define-minor-mode 'doc-string-elt 2)
|
|
(put 'easy-mmode-define-global-mode 'doc-string-elt 2)
|
|
(put 'define-global-minor-mode 'doc-string-elt 2)
|
|
(put 'define-globalized-minor-mode 'doc-string-elt 2)
|
|
(put 'define-generic-mode 'doc-string-elt 7)
|
|
(put 'define-ibuffer-filter 'doc-string-elt 2)
|
|
(put 'define-ibuffer-op 'doc-string-elt 3)
|
|
(put 'define-ibuffer-sorter 'doc-string-elt 2)
|
|
(put 'lambda 'doc-string-elt 2)
|
|
(put 'defalias 'doc-string-elt 3)
|
|
(put 'defvaralias 'doc-string-elt 3)
|
|
(put 'define-category 'doc-string-elt 2)
|
|
|
|
(defvar lisp-doc-string-elt-property 'doc-string-elt
|
|
"The symbol property that holds the docstring position info.")
|
|
|
|
(defun lisp-font-lock-syntactic-face-function (state)
|
|
(if (nth 3 state)
|
|
;; This might be a (doc)string or a |...| symbol.
|
|
(let ((startpos (nth 8 state)))
|
|
(if (eq (char-after startpos) ?|)
|
|
;; This is not a string, but a |...| symbol.
|
|
nil
|
|
(let* ((listbeg (nth 1 state))
|
|
(firstsym (and listbeg
|
|
(save-excursion
|
|
(goto-char listbeg)
|
|
(and (looking-at "([ \t\n]*\\(\\(\\sw\\|\\s_\\)+\\)")
|
|
(match-string 1)))))
|
|
(docelt (and firstsym (get (intern-soft firstsym)
|
|
lisp-doc-string-elt-property))))
|
|
(if (and docelt
|
|
;; It's a string in a form that can have a docstring.
|
|
;; Check whether it's in docstring position.
|
|
(save-excursion
|
|
(when (functionp docelt)
|
|
(goto-char (match-end 1))
|
|
(setq docelt (funcall docelt)))
|
|
(goto-char listbeg)
|
|
(forward-char 1)
|
|
(condition-case nil
|
|
(while (and (> docelt 0) (< (point) startpos)
|
|
(progn (forward-sexp 1) t))
|
|
(setq docelt (1- docelt)))
|
|
(error nil))
|
|
(and (zerop docelt) (<= (point) startpos)
|
|
(progn (forward-comment (point-max)) t)
|
|
(= (point) (nth 8 state)))))
|
|
font-lock-doc-face
|
|
font-lock-string-face))))
|
|
font-lock-comment-face))
|
|
|
|
(defun lisp-mode-variables (&optional lisp-syntax keywords-case-insensitive)
|
|
"Common initialization routine for lisp modes.
|
|
The LISP-SYNTAX argument is used by code in inf-lisp.el and is
|
|
(uselessly) passed from pp.el, chistory.el, gnus-kill.el and score-mode.el
|
|
KEYWORDS-CASE-INSENSITIVE means that for font-lock keywords will not
|
|
be case sensitive."
|
|
(when lisp-syntax
|
|
(set-syntax-table lisp-mode-syntax-table))
|
|
(setq local-abbrev-table lisp-mode-abbrev-table)
|
|
(make-local-variable 'paragraph-ignore-fill-prefix)
|
|
(setq paragraph-ignore-fill-prefix t)
|
|
(make-local-variable 'fill-paragraph-function)
|
|
(setq fill-paragraph-function 'lisp-fill-paragraph)
|
|
;; Adaptive fill mode gets the fill wrong for a one-line paragraph made of
|
|
;; a single docstring. Let's fix it here.
|
|
(set (make-local-variable 'adaptive-fill-function)
|
|
(lambda () (if (looking-at "\\s-+\"[^\n\"]+\"\\s-*$") "")))
|
|
;; Adaptive fill mode gets in the way of auto-fill,
|
|
;; and should make no difference for explicit fill
|
|
;; because lisp-fill-paragraph should do the job.
|
|
;; I believe that newcomment's auto-fill code properly deals with it -stef
|
|
;;(set (make-local-variable 'adaptive-fill-mode) nil)
|
|
(make-local-variable 'indent-line-function)
|
|
(setq indent-line-function 'lisp-indent-line)
|
|
(make-local-variable 'parse-sexp-ignore-comments)
|
|
(setq parse-sexp-ignore-comments t)
|
|
(make-local-variable 'outline-regexp)
|
|
(setq outline-regexp ";;;\\(;* [^ \t\n]\\|###autoload\\)\\|(")
|
|
(make-local-variable 'outline-level)
|
|
(setq outline-level 'lisp-outline-level)
|
|
(make-local-variable 'comment-start)
|
|
(setq comment-start ";")
|
|
(make-local-variable 'comment-start-skip)
|
|
;; Look within the line for a ; following an even number of backslashes
|
|
;; after either a non-backslash or the line beginning.
|
|
(setq comment-start-skip "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+ *")
|
|
(make-local-variable 'font-lock-comment-start-skip)
|
|
;; Font lock mode uses this only when it KNOWS a comment is starting.
|
|
(setq font-lock-comment-start-skip ";+ *")
|
|
(make-local-variable 'comment-add)
|
|
(setq comment-add 1) ;default to `;;' in comment-region
|
|
(make-local-variable 'comment-column)
|
|
(setq comment-column 40)
|
|
;; Don't get confused by `;' in doc strings when paragraph-filling.
|
|
(set (make-local-variable 'comment-use-global-state) t)
|
|
(make-local-variable 'imenu-generic-expression)
|
|
(setq imenu-generic-expression lisp-imenu-generic-expression)
|
|
(make-local-variable 'multibyte-syntax-as-symbol)
|
|
(setq multibyte-syntax-as-symbol t)
|
|
(set (make-local-variable 'syntax-begin-function) 'beginning-of-defun)
|
|
(setq font-lock-defaults
|
|
`((lisp-font-lock-keywords
|
|
lisp-font-lock-keywords-1 lisp-font-lock-keywords-2)
|
|
nil ,keywords-case-insensitive (("+-*/.<>=!?$%_&~^:@" . "w")) nil
|
|
(font-lock-mark-block-function . mark-defun)
|
|
(font-lock-syntactic-face-function
|
|
. lisp-font-lock-syntactic-face-function))))
|
|
|
|
(defun lisp-outline-level ()
|
|
"Lisp mode `outline-level' function."
|
|
(let ((len (- (match-end 0) (match-beginning 0))))
|
|
(if (looking-at "(\\|;;;###autoload")
|
|
1000
|
|
len)))
|
|
|
|
(defvar lisp-mode-shared-map
|
|
(let ((map (make-sparse-keymap)))
|
|
(define-key map "\e\C-q" 'indent-sexp)
|
|
(define-key map "\177" 'backward-delete-char-untabify)
|
|
;; This gets in the way when viewing a Lisp file in view-mode. As
|
|
;; long as [backspace] is mapped into DEL via the
|
|
;; function-key-map, this should remain disabled!!
|
|
;;;(define-key map [backspace] 'backward-delete-char-untabify)
|
|
map)
|
|
"Keymap for commands shared by all sorts of Lisp modes.")
|
|
|
|
(defvar emacs-lisp-mode-map
|
|
(let ((map (make-sparse-keymap "Emacs-Lisp"))
|
|
(menu-map (make-sparse-keymap "Emacs-Lisp"))
|
|
(prof-map (make-sparse-keymap))
|
|
(tracing-map (make-sparse-keymap)))
|
|
(set-keymap-parent map lisp-mode-shared-map)
|
|
(define-key map "\e\t" 'lisp-complete-symbol)
|
|
(define-key map "\e\C-x" 'eval-defun)
|
|
(define-key map "\e\C-q" 'indent-pp-sexp)
|
|
(define-key map [menu-bar emacs-lisp] (cons "Emacs-Lisp" menu-map))
|
|
(define-key menu-map [eldoc]
|
|
'(menu-item "Auto-Display Documentation Strings" eldoc-mode
|
|
:button (:toggle . (bound-and-true-p eldoc-mode))
|
|
:help "Display the documentation string for the item under cursor"))
|
|
(define-key menu-map [checkdoc]
|
|
'(menu-item "Check Documentation Strings" checkdoc
|
|
:help "Check documentation strings for style requirements"))
|
|
(define-key menu-map [re-builder]
|
|
'(menu-item "Construct Regexp" re-builder
|
|
:help "Construct a regexp interactively"))
|
|
(define-key menu-map [tracing] (cons "Tracing" tracing-map))
|
|
(define-key tracing-map [tr-a]
|
|
'(menu-item "Untrace all" untrace-all
|
|
:help "Untrace all currently traced functions"))
|
|
(define-key tracing-map [tr-uf]
|
|
'(menu-item "Untrace function..." untrace-function
|
|
:help "Untrace function, and possibly activate all remaining advice"))
|
|
(define-key tracing-map [tr-sep] '("--"))
|
|
(define-key tracing-map [tr-q]
|
|
'(menu-item "Trace function quietly..." trace-function-background
|
|
:help "Trace the function with trace output going quietly to a buffer"))
|
|
(define-key tracing-map [tr-f]
|
|
'(menu-item "Trace function..." trace-function
|
|
:help "Trace the function given as an argument"))
|
|
(define-key menu-map [profiling] (cons "Profiling" prof-map))
|
|
(define-key prof-map [prof-restall]
|
|
'(menu-item "Remove Instrumentation for All Functions" elp-restore-all
|
|
:help "Restore the original definitions of all functions being profiled"))
|
|
(define-key prof-map [prof-restfunc]
|
|
'(menu-item "Remove Instrumentation for Function..." elp-restore-function
|
|
:help "Restore an instrumented function to its original definition"))
|
|
|
|
(define-key prof-map [sep-rem] '("--"))
|
|
(define-key prof-map [prof-resall]
|
|
'(menu-item "Reset Counters for All Functions" elp-reset-all
|
|
:help "Reset the profiling information for all functions being profiled"))
|
|
(define-key prof-map [prof-resfunc]
|
|
'(menu-item "Reset Counters for Function..." elp-reset-function
|
|
:help "Reset the profiling information for a function"))
|
|
(define-key prof-map [prof-res]
|
|
'(menu-item "Show Profiling Results" elp-results
|
|
:help "Display current profiling results"))
|
|
(define-key prof-map [prof-pack]
|
|
'(menu-item "Instrument Package..." elp-instrument-package
|
|
:help "Instrument for profiling all function that start with a prefix"))
|
|
(define-key prof-map [prof-func]
|
|
'(menu-item "Instrument Function..." elp-instrument-function
|
|
:help "Instrument a function for profiling"))
|
|
(define-key menu-map [edebug-defun]
|
|
'(menu-item "Instrument Function for Debugging" edebug-defun
|
|
:help "Evaluate the top level form point is in, stepping through with Edebug"
|
|
:keys "C-u C-M-x"))
|
|
(define-key menu-map [separator-byte] '("--"))
|
|
(define-key menu-map [disas]
|
|
'(menu-item "Disassemble byte compiled object..." disassemble
|
|
:help "Print disassembled code for OBJECT in a buffer"))
|
|
(define-key menu-map [byte-recompile]
|
|
'(menu-item "Byte-recompile Directory..." byte-recompile-directory
|
|
:help "Recompile every `.el' file in DIRECTORY that needs recompilation"))
|
|
(define-key menu-map [emacs-byte-compile-and-load]
|
|
'(menu-item "Byte-compile And Load" emacs-lisp-byte-compile-and-load
|
|
:help "Byte-compile the current file (if it has changed), then load compiled code"))
|
|
(define-key menu-map [byte-compile]
|
|
'(menu-item "Byte-compile This File" emacs-lisp-byte-compile
|
|
:help "Byte compile the file containing the current buffer"))
|
|
(define-key menu-map [separator-eval] '("--"))
|
|
(define-key menu-map [ielm]
|
|
'(menu-item "Interactive Expression Evaluation" ielm
|
|
:help "Interactively evaluate Emacs Lisp expressions"))
|
|
(define-key menu-map [eval-buffer]
|
|
'(menu-item "Evaluate Buffer" eval-buffer
|
|
:help "Execute the current buffer as Lisp code"))
|
|
(define-key menu-map [eval-region]
|
|
'(menu-item "Evaluate Region" eval-region
|
|
:help "Execute the region as Lisp code"
|
|
:enable mark-active))
|
|
(define-key menu-map [eval-sexp]
|
|
'(menu-item "Evaluate Last S-expression" eval-last-sexp
|
|
:help "Evaluate sexp before point; print value in minibuffer"))
|
|
(define-key menu-map [separator-format] '("--"))
|
|
(define-key menu-map [comment-region]
|
|
'(menu-item "Comment Out Region" comment-region
|
|
:help "Comment or uncomment each line in the region"
|
|
:enable mark-active))
|
|
(define-key menu-map [indent-region]
|
|
'(menu-item "Indent Region" indent-region
|
|
:help "Indent each nonblank line in the region"
|
|
:enable mark-active))
|
|
(define-key menu-map [indent-line] '("Indent Line" . lisp-indent-line))
|
|
map)
|
|
"Keymap for Emacs Lisp mode.
|
|
All commands in `lisp-mode-shared-map' are inherited by this map.")
|
|
|
|
(defun emacs-lisp-byte-compile ()
|
|
"Byte compile the file containing the current buffer."
|
|
(interactive)
|
|
(if buffer-file-name
|
|
(byte-compile-file buffer-file-name)
|
|
(error "The buffer must be saved in a file first")))
|
|
|
|
(defun emacs-lisp-byte-compile-and-load ()
|
|
"Byte-compile the current file (if it has changed), then load compiled code."
|
|
(interactive)
|
|
(or buffer-file-name
|
|
(error "The buffer must be saved in a file first"))
|
|
(require 'bytecomp)
|
|
;; Recompile if file or buffer has changed since last compilation.
|
|
(if (and (buffer-modified-p)
|
|
(y-or-n-p (format "Save buffer %s first? " (buffer-name))))
|
|
(save-buffer))
|
|
(let ((compiled-file-name (byte-compile-dest-file buffer-file-name)))
|
|
(if (file-newer-than-file-p compiled-file-name buffer-file-name)
|
|
(load-file compiled-file-name)
|
|
(byte-compile-file buffer-file-name t))))
|
|
|
|
(defcustom emacs-lisp-mode-hook nil
|
|
"Hook run when entering Emacs Lisp mode."
|
|
:options '(turn-on-eldoc-mode imenu-add-menubar-index checkdoc-minor-mode)
|
|
:type 'hook
|
|
:group 'lisp)
|
|
|
|
(defcustom lisp-mode-hook nil
|
|
"Hook run when entering Lisp mode."
|
|
:options '(imenu-add-menubar-index)
|
|
:type 'hook
|
|
:group 'lisp)
|
|
|
|
(defcustom lisp-interaction-mode-hook nil
|
|
"Hook run when entering Lisp Interaction mode."
|
|
:options '(turn-on-eldoc-mode)
|
|
:type 'hook
|
|
:group 'lisp)
|
|
|
|
(defun emacs-lisp-mode ()
|
|
"Major mode for editing Lisp code to run in Emacs.
|
|
Commands:
|
|
Delete converts tabs to spaces as it moves back.
|
|
Blank lines separate paragraphs. Semicolons start comments.
|
|
|
|
\\{emacs-lisp-mode-map}
|
|
Entry to this mode calls the value of `emacs-lisp-mode-hook'
|
|
if that value is non-nil."
|
|
(interactive)
|
|
(kill-all-local-variables)
|
|
(use-local-map emacs-lisp-mode-map)
|
|
(set-syntax-table emacs-lisp-mode-syntax-table)
|
|
(setq major-mode 'emacs-lisp-mode)
|
|
(setq mode-name "Emacs-Lisp")
|
|
(lisp-mode-variables)
|
|
(setq imenu-case-fold-search nil)
|
|
(run-mode-hooks 'emacs-lisp-mode-hook))
|
|
(put 'emacs-lisp-mode 'custom-mode-group 'lisp)
|
|
|
|
(defvar lisp-mode-map
|
|
(let ((map (make-sparse-keymap))
|
|
(menu-map (make-sparse-keymap "Lisp")))
|
|
(set-keymap-parent map lisp-mode-shared-map)
|
|
(define-key map "\e\C-x" 'lisp-eval-defun)
|
|
(define-key map "\C-c\C-z" 'run-lisp)
|
|
(define-key map [menu-bar lisp] (cons "Lisp" menu-map))
|
|
(define-key menu-map [run-lisp]
|
|
'(menu-item "Run inferior Lisp" run-lisp
|
|
:help "Run an inferior Lisp process, input and output via buffer `*inferior-lisp*'"))
|
|
(define-key menu-map [ev-def]
|
|
'(menu-item "Eval defun" lisp-eval-defun
|
|
:help "Send the current defun to the Lisp process made by M-x run-lisp"))
|
|
(define-key menu-map [ind-sexp]
|
|
'(menu-item "Indent sexp" indent-sexp
|
|
:help "Indent each line of the list starting just after point"))
|
|
map)
|
|
"Keymap for ordinary Lisp mode.
|
|
All commands in `lisp-mode-shared-map' are inherited by this map.")
|
|
|
|
(defun lisp-mode ()
|
|
"Major mode for editing Lisp code for Lisps other than GNU Emacs Lisp.
|
|
Commands:
|
|
Delete converts tabs to spaces as it moves back.
|
|
Blank lines separate paragraphs. Semicolons start comments.
|
|
|
|
\\{lisp-mode-map}
|
|
Note that `run-lisp' may be used either to start an inferior Lisp job
|
|
or to switch back to an existing one.
|
|
|
|
Entry to this mode calls the value of `lisp-mode-hook'
|
|
if that value is non-nil."
|
|
(interactive)
|
|
(kill-all-local-variables)
|
|
(use-local-map lisp-mode-map)
|
|
(setq major-mode 'lisp-mode)
|
|
(setq mode-name "Lisp")
|
|
(lisp-mode-variables nil t)
|
|
(make-local-variable 'comment-start-skip)
|
|
(setq comment-start-skip
|
|
"\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\)\\(;+\\|#|\\) *")
|
|
(setq imenu-case-fold-search t)
|
|
(set-syntax-table lisp-mode-syntax-table)
|
|
(run-mode-hooks 'lisp-mode-hook))
|
|
(put 'lisp-mode 'find-tag-default-function 'lisp-find-tag-default)
|
|
|
|
(defun lisp-find-tag-default ()
|
|
(let ((default (find-tag-default)))
|
|
(when (stringp default)
|
|
(if (string-match ":+" default)
|
|
(substring default (match-end 0))
|
|
default))))
|
|
|
|
;; Used in old LispM code.
|
|
(defalias 'common-lisp-mode 'lisp-mode)
|
|
|
|
;; This will do unless inf-lisp.el is loaded.
|
|
(defun lisp-eval-defun (&optional and-go)
|
|
"Send the current defun to the Lisp process made by \\[run-lisp]."
|
|
(interactive)
|
|
(error "Process lisp does not exist"))
|
|
|
|
(defvar lisp-interaction-mode-map
|
|
(let ((map (make-sparse-keymap))
|
|
(menu-map (make-sparse-keymap "Lisp-Interaction")))
|
|
(set-keymap-parent map lisp-mode-shared-map)
|
|
(define-key map "\e\C-x" 'eval-defun)
|
|
(define-key map "\e\C-q" 'indent-pp-sexp)
|
|
(define-key map "\e\t" 'lisp-complete-symbol)
|
|
(define-key map "\n" 'eval-print-last-sexp)
|
|
(define-key map [menu-bar lisp-interaction] (cons "Lisp-Interaction" menu-map))
|
|
(define-key menu-map [eval-defun]
|
|
'(menu-item "Evaluate Defun" eval-defun
|
|
:help "Evaluate the top-level form containing point, or after point"))
|
|
(define-key menu-map [eval-print-last-sexp]
|
|
'(menu-item "Evaluate and print" eval-print-last-sexp
|
|
:help "Evaluate sexp before point; print value into current buffer"))
|
|
(define-key menu-map [edebug-defun-lisp-interaction]
|
|
'(menu-item "Instrument Function for Debugging" edebug-defun
|
|
:help "Evaluate the top level form point is in, stepping through with Edebug"
|
|
:keys "C-u C-M-x"))
|
|
(define-key menu-map [indent-pp-sexp]
|
|
'(menu-item "Indent or Pretty-Print" indent-pp-sexp
|
|
:help "Indent each line of the list starting just after point, or prettyprint it"))
|
|
(define-key menu-map [lisp-complete-symbol]
|
|
'(menu-item "Complete Lisp Symbol" lisp-complete-symbol
|
|
:help "Perform completion on Lisp symbol preceding point"))
|
|
map)
|
|
"Keymap for Lisp Interaction mode.
|
|
All commands in `lisp-mode-shared-map' are inherited by this map.")
|
|
|
|
(defvar lisp-interaction-mode-abbrev-table lisp-mode-abbrev-table)
|
|
(define-derived-mode lisp-interaction-mode emacs-lisp-mode "Lisp Interaction"
|
|
"Major mode for typing and evaluating Lisp forms.
|
|
Like Lisp mode except that \\[eval-print-last-sexp] evals the Lisp expression
|
|
before point, and prints its value into the buffer, advancing point.
|
|
Note that printing is controlled by `eval-expression-print-length'
|
|
and `eval-expression-print-level'.
|
|
|
|
Commands:
|
|
Delete converts tabs to spaces as it moves back.
|
|
Paragraphs are separated only by blank lines.
|
|
Semicolons start comments.
|
|
|
|
\\{lisp-interaction-mode-map}
|
|
Entry to this mode calls the value of `lisp-interaction-mode-hook'
|
|
if that value is non-nil.")
|
|
|
|
(defun eval-print-last-sexp ()
|
|
"Evaluate sexp before point; print value into current buffer.
|
|
|
|
If `eval-expression-debug-on-error' is non-nil, which is the default,
|
|
this command arranges for all errors to enter the debugger.
|
|
|
|
Note that printing the result is controlled by the variables
|
|
`eval-expression-print-length' and `eval-expression-print-level',
|
|
which see."
|
|
(interactive)
|
|
(let ((standard-output (current-buffer)))
|
|
(terpri)
|
|
(eval-last-sexp t)
|
|
(terpri)))
|
|
|
|
|
|
(defun last-sexp-setup-props (beg end value alt1 alt2)
|
|
"Set up text properties for the output of `eval-last-sexp-1'.
|
|
BEG and END are the start and end of the output in current-buffer.
|
|
VALUE is the Lisp value printed, ALT1 and ALT2 are strings for the
|
|
alternative printed representations that can be displayed."
|
|
(let ((map (make-sparse-keymap)))
|
|
(define-key map "\C-m" 'last-sexp-toggle-display)
|
|
(define-key map [down-mouse-2] 'mouse-set-point)
|
|
(define-key map [mouse-2] 'last-sexp-toggle-display)
|
|
(add-text-properties
|
|
beg end
|
|
`(printed-value (,value ,alt1 ,alt2)
|
|
mouse-face highlight
|
|
keymap ,map
|
|
help-echo "RET, mouse-2: toggle abbreviated display"
|
|
rear-nonsticky (mouse-face keymap help-echo
|
|
printed-value)))))
|
|
|
|
|
|
(defun last-sexp-toggle-display (&optional arg)
|
|
"Toggle between abbreviated and unabbreviated printed representations."
|
|
(interactive "P")
|
|
(save-restriction
|
|
(widen)
|
|
(let ((value (get-text-property (point) 'printed-value)))
|
|
(when value
|
|
(let ((beg (or (previous-single-property-change (min (point-max) (1+ (point)))
|
|
'printed-value)
|
|
(point)))
|
|
(end (or (next-single-char-property-change (point) 'printed-value) (point)))
|
|
(standard-output (current-buffer))
|
|
(point (point)))
|
|
(delete-region beg end)
|
|
(insert (nth 1 value))
|
|
(or (= beg point)
|
|
(setq point (1- (point))))
|
|
(last-sexp-setup-props beg (point)
|
|
(nth 0 value)
|
|
(nth 2 value)
|
|
(nth 1 value))
|
|
(goto-char (min (point-max) point)))))))
|
|
|
|
(defun prin1-char (char)
|
|
"Return a string representing CHAR as a character rather than as an integer.
|
|
If CHAR is not a character, return nil."
|
|
(and (integerp char)
|
|
(eventp char)
|
|
(let ((c (event-basic-type char))
|
|
(mods (event-modifiers char))
|
|
string)
|
|
;; Prevent ?A from turning into ?\S-a.
|
|
(if (and (memq 'shift mods)
|
|
(zerop (logand char ?\S-\^@))
|
|
(not (let ((case-fold-search nil))
|
|
(char-equal c (upcase c)))))
|
|
(setq c (upcase c) mods nil))
|
|
;; What string are we considering using?
|
|
(condition-case nil
|
|
(setq string
|
|
(concat
|
|
"?"
|
|
(mapconcat
|
|
(lambda (modif)
|
|
(cond ((eq modif 'super) "\\s-")
|
|
(t (string ?\\ (upcase (aref (symbol-name modif) 0)) ?-))))
|
|
mods "")
|
|
(cond
|
|
((memq c '(?\; ?\( ?\) ?\{ ?\} ?\[ ?\] ?\" ?\' ?\\)) (string ?\\ c))
|
|
((eq c 127) "\\C-?")
|
|
(t
|
|
(string c)))))
|
|
(error nil))
|
|
;; Verify the string reads a CHAR, not to some other character.
|
|
;; If it doesn't, return nil instead.
|
|
(and string
|
|
(= (car (read-from-string string)) char)
|
|
string))))
|
|
|
|
|
|
(defun preceding-sexp ()
|
|
"Return sexp before the point."
|
|
(let ((opoint (point))
|
|
ignore-quotes
|
|
expr)
|
|
(save-excursion
|
|
(with-syntax-table emacs-lisp-mode-syntax-table
|
|
;; If this sexp appears to be enclosed in `...'
|
|
;; then ignore the surrounding quotes.
|
|
(setq ignore-quotes
|
|
(or (eq (following-char) ?\')
|
|
(eq (preceding-char) ?\')))
|
|
(forward-sexp -1)
|
|
;; If we were after `?\e' (or similar case),
|
|
;; use the whole thing, not just the `e'.
|
|
(when (eq (preceding-char) ?\\)
|
|
(forward-char -1)
|
|
(when (eq (preceding-char) ??)
|
|
(forward-char -1)))
|
|
|
|
;; Skip over `#N='s.
|
|
(when (eq (preceding-char) ?=)
|
|
(let (labeled-p)
|
|
(save-excursion
|
|
(skip-chars-backward "0-9#=")
|
|
(setq labeled-p (looking-at "\\(#[0-9]+=\\)+")))
|
|
(when labeled-p
|
|
(forward-sexp -1))))
|
|
|
|
(save-restriction
|
|
;; vladimir@cs.ualberta.ca 30-Jul-1997: skip ` in
|
|
;; `variable' so that the value is returned, not the
|
|
;; name
|
|
(if (and ignore-quotes
|
|
(eq (following-char) ?`))
|
|
(forward-char))
|
|
(narrow-to-region (point-min) opoint)
|
|
(setq expr (read (current-buffer)))
|
|
;; If it's an (interactive ...) form, it's more
|
|
;; useful to show how an interactive call would
|
|
;; use it.
|
|
(and (consp expr)
|
|
(eq (car expr) 'interactive)
|
|
(setq expr
|
|
(list 'call-interactively
|
|
(list 'quote
|
|
(list 'lambda
|
|
'(&rest args)
|
|
expr
|
|
'args)))))
|
|
expr)))))
|
|
|
|
|
|
(defun eval-last-sexp-1 (eval-last-sexp-arg-internal)
|
|
"Evaluate sexp before point; print value in minibuffer.
|
|
With argument, print output into current buffer."
|
|
(let ((standard-output (if eval-last-sexp-arg-internal (current-buffer) t)))
|
|
(eval-last-sexp-print-value (eval (preceding-sexp)))))
|
|
|
|
|
|
(defun eval-last-sexp-print-value (value)
|
|
(let ((unabbreviated (let ((print-length nil) (print-level nil))
|
|
(prin1-to-string value)))
|
|
(print-length eval-expression-print-length)
|
|
(print-level eval-expression-print-level)
|
|
(beg (point))
|
|
end)
|
|
(prog1
|
|
(prin1 value)
|
|
(let ((str (eval-expression-print-format value)))
|
|
(if str (princ str)))
|
|
(setq end (point))
|
|
(when (and (bufferp standard-output)
|
|
(or (not (null print-length))
|
|
(not (null print-level)))
|
|
(not (string= unabbreviated
|
|
(buffer-substring-no-properties beg end))))
|
|
(last-sexp-setup-props beg end value
|
|
unabbreviated
|
|
(buffer-substring-no-properties beg end))
|
|
))))
|
|
|
|
|
|
(defvar eval-last-sexp-fake-value (make-symbol "t"))
|
|
|
|
(defun eval-last-sexp (eval-last-sexp-arg-internal)
|
|
"Evaluate sexp before point; print value in minibuffer.
|
|
Interactively, with prefix argument, print output into current buffer.
|
|
|
|
If `eval-expression-debug-on-error' is non-nil, which is the default,
|
|
this command arranges for all errors to enter the debugger."
|
|
(interactive "P")
|
|
(if (null eval-expression-debug-on-error)
|
|
(eval-last-sexp-1 eval-last-sexp-arg-internal)
|
|
(let ((value
|
|
(let ((debug-on-error eval-last-sexp-fake-value))
|
|
(cons (eval-last-sexp-1 eval-last-sexp-arg-internal)
|
|
debug-on-error))))
|
|
(unless (eq (cdr value) eval-last-sexp-fake-value)
|
|
(setq debug-on-error (cdr value)))
|
|
(car value))))
|
|
|
|
(defun eval-defun-1 (form)
|
|
"Treat some expressions specially.
|
|
Reset the `defvar' and `defcustom' variables to the initial value.
|
|
Reinitialize the face according to the `defface' specification."
|
|
;; The code in edebug-defun should be consistent with this, but not
|
|
;; the same, since this gets a macroexpended form.
|
|
(cond ((not (listp form))
|
|
form)
|
|
((and (eq (car form) 'defvar)
|
|
(cdr-safe (cdr-safe form))
|
|
(boundp (cadr form)))
|
|
;; Force variable to be re-set.
|
|
`(progn (defvar ,(nth 1 form) nil ,@(nthcdr 3 form))
|
|
(setq-default ,(nth 1 form) ,(nth 2 form))))
|
|
;; `defcustom' is now macroexpanded to
|
|
;; `custom-declare-variable' with a quoted value arg.
|
|
((and (eq (car form) 'custom-declare-variable)
|
|
(default-boundp (eval (nth 1 form))))
|
|
;; Force variable to be bound.
|
|
(set-default (eval (nth 1 form)) (eval (nth 1 (nth 2 form))))
|
|
form)
|
|
;; `defface' is macroexpanded to `custom-declare-face'.
|
|
((eq (car form) 'custom-declare-face)
|
|
;; Reset the face.
|
|
(setq face-new-frame-defaults
|
|
(assq-delete-all (eval (nth 1 form)) face-new-frame-defaults))
|
|
(put (eval (nth 1 form)) 'face-defface-spec nil)
|
|
;; Setting `customized-face' to the new spec after calling
|
|
;; the form, but preserving the old saved spec in `saved-face',
|
|
;; imitates the situation when the new face spec is set
|
|
;; temporarily for the current session in the customize
|
|
;; buffer, thus allowing `face-user-default-spec' to use the
|
|
;; new customized spec instead of the saved spec.
|
|
;; Resetting `saved-face' temporarily to nil is needed to let
|
|
;; `defface' change the spec, regardless of a saved spec.
|
|
(prog1 `(prog1 ,form
|
|
(put ,(nth 1 form) 'saved-face
|
|
',(get (eval (nth 1 form)) 'saved-face))
|
|
(put ,(nth 1 form) 'customized-face
|
|
,(nth 2 form)))
|
|
(put (eval (nth 1 form)) 'saved-face nil)))
|
|
((eq (car form) 'progn)
|
|
(cons 'progn (mapcar 'eval-defun-1 (cdr form))))
|
|
(t form)))
|
|
|
|
(defun eval-defun-2 ()
|
|
"Evaluate defun that point is in or before.
|
|
The value is displayed in the minibuffer.
|
|
If the current defun is actually a call to `defvar',
|
|
then reset the variable using the initial value expression
|
|
even if the variable already has some other value.
|
|
\(Normally `defvar' does not change the variable's value
|
|
if it already has a value.\)
|
|
|
|
With argument, insert value in current buffer after the defun.
|
|
Return the result of evaluation."
|
|
(interactive "P")
|
|
;; FIXME: the print-length/level bindings should only be applied while
|
|
;; printing, not while evaluating.
|
|
(let ((debug-on-error eval-expression-debug-on-error)
|
|
(print-length eval-expression-print-length)
|
|
(print-level eval-expression-print-level))
|
|
(save-excursion
|
|
;; Arrange for eval-region to "read" the (possibly) altered form.
|
|
;; eval-region handles recording which file defines a function or
|
|
;; variable. Re-written using `apply' to avoid capturing
|
|
;; variables like `end'.
|
|
(apply
|
|
#'eval-region
|
|
(let ((standard-output t)
|
|
beg end form)
|
|
;; Read the form from the buffer, and record where it ends.
|
|
(save-excursion
|
|
(end-of-defun)
|
|
(beginning-of-defun)
|
|
(setq beg (point))
|
|
(setq form (read (current-buffer)))
|
|
(setq end (point)))
|
|
;; Alter the form if necessary.
|
|
(setq form (eval-defun-1 (macroexpand form)))
|
|
(list beg end standard-output
|
|
`(lambda (ignore)
|
|
;; Skipping to the end of the specified region
|
|
;; will make eval-region return.
|
|
(goto-char ,end)
|
|
',form))))))
|
|
;; The result of evaluation has been put onto VALUES. So return it.
|
|
(car values))
|
|
|
|
(defun eval-defun (edebug-it)
|
|
"Evaluate the top-level form containing point, or after point.
|
|
|
|
If the current defun is actually a call to `defvar' or `defcustom',
|
|
evaluating it this way resets the variable using its initial value
|
|
expression even if the variable already has some other value.
|
|
\(Normally `defvar' and `defcustom' do not alter the value if there
|
|
already is one.) In an analogous way, evaluating a `defface'
|
|
overrides any customizations of the face, so that it becomes
|
|
defined exactly as the `defface' expression says.
|
|
|
|
If `eval-expression-debug-on-error' is non-nil, which is the default,
|
|
this command arranges for all errors to enter the debugger.
|
|
|
|
With a prefix argument, instrument the code for Edebug.
|
|
|
|
If acting on a `defun' for FUNCTION, and the function was
|
|
instrumented, `Edebug: FUNCTION' is printed in the minibuffer. If not
|
|
instrumented, just FUNCTION is printed.
|
|
|
|
If not acting on a `defun', the result of evaluation is displayed in
|
|
the minibuffer. This display is controlled by the variables
|
|
`eval-expression-print-length' and `eval-expression-print-level',
|
|
which see."
|
|
(interactive "P")
|
|
(cond (edebug-it
|
|
(require 'edebug)
|
|
(eval-defun (not edebug-all-defs)))
|
|
(t
|
|
(if (null eval-expression-debug-on-error)
|
|
(eval-defun-2)
|
|
(let ((old-value (make-symbol "t")) new-value value)
|
|
(let ((debug-on-error old-value))
|
|
(setq value (eval-defun-2))
|
|
(setq new-value debug-on-error))
|
|
(unless (eq old-value new-value)
|
|
(setq debug-on-error new-value))
|
|
value)))))
|
|
|
|
;; May still be used by some external Lisp-mode variant.
|
|
(define-obsolete-function-alias 'lisp-comment-indent
|
|
'comment-indent-default "22.1")
|
|
(define-obsolete-function-alias 'lisp-mode-auto-fill 'do-auto-fill "23.1")
|
|
|
|
(defcustom lisp-indent-offset nil
|
|
"If non-nil, indent second line of expressions that many more columns."
|
|
:group 'lisp
|
|
:type '(choice (const nil) integer))
|
|
(put 'lisp-body-indent 'safe-local-variable
|
|
(lambda (x) (or (null x) (integerp x))))
|
|
|
|
(defvar lisp-indent-function 'lisp-indent-function)
|
|
|
|
(defun lisp-indent-line (&optional whole-exp)
|
|
"Indent current line as Lisp code.
|
|
With argument, indent any additional lines of the same expression
|
|
rigidly along with this one."
|
|
(interactive "P")
|
|
(let ((indent (calculate-lisp-indent)) shift-amt end
|
|
(pos (- (point-max) (point)))
|
|
(beg (progn (beginning-of-line) (point))))
|
|
(skip-chars-forward " \t")
|
|
(if (or (null indent) (looking-at "\\s<\\s<\\s<"))
|
|
;; Don't alter indentation of a ;;; comment line
|
|
;; or a line that starts in a string.
|
|
(goto-char (- (point-max) pos))
|
|
(if (and (looking-at "\\s<") (not (looking-at "\\s<\\s<")))
|
|
;; Single-semicolon comment lines should be indented
|
|
;; as comment lines, not as code.
|
|
(progn (indent-for-comment) (forward-char -1))
|
|
(if (listp indent) (setq indent (car indent)))
|
|
(setq shift-amt (- indent (current-column)))
|
|
(if (zerop shift-amt)
|
|
nil
|
|
(delete-region beg (point))
|
|
(indent-to indent)))
|
|
;; If initial point was within line's indentation,
|
|
;; position after the indentation. Else stay at same point in text.
|
|
(if (> (- (point-max) pos) (point))
|
|
(goto-char (- (point-max) pos)))
|
|
;; If desired, shift remaining lines of expression the same amount.
|
|
(and whole-exp (not (zerop shift-amt))
|
|
(save-excursion
|
|
(goto-char beg)
|
|
(forward-sexp 1)
|
|
(setq end (point))
|
|
(goto-char beg)
|
|
(forward-line 1)
|
|
(setq beg (point))
|
|
(> end beg))
|
|
(indent-code-rigidly beg end shift-amt)))))
|
|
|
|
(defvar calculate-lisp-indent-last-sexp)
|
|
|
|
(defun calculate-lisp-indent (&optional parse-start)
|
|
"Return appropriate indentation for current line as Lisp code.
|
|
In usual case returns an integer: the column to indent to.
|
|
If the value is nil, that means don't change the indentation
|
|
because the line starts inside a string.
|
|
|
|
The value can also be a list of the form (COLUMN CONTAINING-SEXP-START).
|
|
This means that following lines at the same level of indentation
|
|
should not necessarily be indented the same as this line.
|
|
Then COLUMN is the column to indent to, and CONTAINING-SEXP-START
|
|
is the buffer position of the start of the containing expression."
|
|
(save-excursion
|
|
(beginning-of-line)
|
|
(let ((indent-point (point))
|
|
state paren-depth
|
|
;; setting this to a number inhibits calling hook
|
|
(desired-indent nil)
|
|
(retry t)
|
|
calculate-lisp-indent-last-sexp containing-sexp)
|
|
(if parse-start
|
|
(goto-char parse-start)
|
|
(beginning-of-defun))
|
|
;; Find outermost containing sexp
|
|
(while (< (point) indent-point)
|
|
(setq state (parse-partial-sexp (point) indent-point 0)))
|
|
;; Find innermost containing sexp
|
|
(while (and retry
|
|
state
|
|
(> (setq paren-depth (elt state 0)) 0))
|
|
(setq retry nil)
|
|
(setq calculate-lisp-indent-last-sexp (elt state 2))
|
|
(setq containing-sexp (elt state 1))
|
|
;; Position following last unclosed open.
|
|
(goto-char (1+ containing-sexp))
|
|
;; Is there a complete sexp since then?
|
|
(if (and calculate-lisp-indent-last-sexp
|
|
(> calculate-lisp-indent-last-sexp (point)))
|
|
;; Yes, but is there a containing sexp after that?
|
|
(let ((peek (parse-partial-sexp calculate-lisp-indent-last-sexp
|
|
indent-point 0)))
|
|
(if (setq retry (car (cdr peek))) (setq state peek)))))
|
|
(if retry
|
|
nil
|
|
;; Innermost containing sexp found
|
|
(goto-char (1+ containing-sexp))
|
|
(if (not calculate-lisp-indent-last-sexp)
|
|
;; indent-point immediately follows open paren.
|
|
;; Don't call hook.
|
|
(setq desired-indent (current-column))
|
|
;; Find the start of first element of containing sexp.
|
|
(parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
|
|
(cond ((looking-at "\\s(")
|
|
;; First element of containing sexp is a list.
|
|
;; Indent under that list.
|
|
)
|
|
((> (save-excursion (forward-line 1) (point))
|
|
calculate-lisp-indent-last-sexp)
|
|
;; This is the first line to start within the containing sexp.
|
|
;; It's almost certainly a function call.
|
|
(if (= (point) calculate-lisp-indent-last-sexp)
|
|
;; Containing sexp has nothing before this line
|
|
;; except the first element. Indent under that element.
|
|
nil
|
|
;; Skip the first element, find start of second (the first
|
|
;; argument of the function call) and indent under.
|
|
(progn (forward-sexp 1)
|
|
(parse-partial-sexp (point)
|
|
calculate-lisp-indent-last-sexp
|
|
0 t)))
|
|
(backward-prefix-chars))
|
|
(t
|
|
;; Indent beneath first sexp on same line as
|
|
;; `calculate-lisp-indent-last-sexp'. Again, it's
|
|
;; almost certainly a function call.
|
|
(goto-char calculate-lisp-indent-last-sexp)
|
|
(beginning-of-line)
|
|
(parse-partial-sexp (point) calculate-lisp-indent-last-sexp
|
|
0 t)
|
|
(backward-prefix-chars)))))
|
|
;; Point is at the point to indent under unless we are inside a string.
|
|
;; Call indentation hook except when overridden by lisp-indent-offset
|
|
;; or if the desired indentation has already been computed.
|
|
(let ((normal-indent (current-column)))
|
|
(cond ((elt state 3)
|
|
;; Inside a string, don't change indentation.
|
|
nil)
|
|
((and (integerp lisp-indent-offset) containing-sexp)
|
|
;; Indent by constant offset
|
|
(goto-char containing-sexp)
|
|
(+ (current-column) lisp-indent-offset))
|
|
;; in this case calculate-lisp-indent-last-sexp is not nil
|
|
(calculate-lisp-indent-last-sexp
|
|
(or
|
|
;; try to align the parameters of a known function
|
|
(and lisp-indent-function
|
|
(not retry)
|
|
(funcall lisp-indent-function indent-point state))
|
|
;; If the function has no special alignment
|
|
;; or it does not apply to this argument,
|
|
;; try to align a constant-symbol under the last
|
|
;; preceding constant symbol, if there is such one of
|
|
;; the last 2 preceding symbols, in the previous
|
|
;; uncommented line.
|
|
(and (save-excursion
|
|
(goto-char indent-point)
|
|
(skip-chars-forward " \t")
|
|
(looking-at ":"))
|
|
;; The last sexp may not be at the indentation
|
|
;; where it begins, so find that one, instead.
|
|
(save-excursion
|
|
(goto-char calculate-lisp-indent-last-sexp)
|
|
;; Handle prefix characters and whitespace
|
|
;; following an open paren. (Bug#1012)
|
|
(backward-prefix-chars)
|
|
(while (and (not (looking-back "^[ \t]*\\|([ \t]+"))
|
|
(or (not containing-sexp)
|
|
(< (1+ containing-sexp) (point))))
|
|
(forward-sexp -1)
|
|
(backward-prefix-chars))
|
|
(setq calculate-lisp-indent-last-sexp (point)))
|
|
(> calculate-lisp-indent-last-sexp
|
|
(save-excursion
|
|
(goto-char (1+ containing-sexp))
|
|
(parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
|
|
(point)))
|
|
(let ((parse-sexp-ignore-comments t)
|
|
indent)
|
|
(goto-char calculate-lisp-indent-last-sexp)
|
|
(or (and (looking-at ":")
|
|
(setq indent (current-column)))
|
|
(and (< (save-excursion (beginning-of-line) (point))
|
|
(prog2 (backward-sexp) (point)))
|
|
(looking-at ":")
|
|
(setq indent (current-column))))
|
|
indent))
|
|
;; another symbols or constants not preceded by a constant
|
|
;; as defined above.
|
|
normal-indent))
|
|
;; in this case calculate-lisp-indent-last-sexp is nil
|
|
(desired-indent)
|
|
(t
|
|
normal-indent))))))
|
|
|
|
(defun lisp-indent-function (indent-point state)
|
|
"This function is the normal value of the variable `lisp-indent-function'.
|
|
It is used when indenting a line within a function call, to see if the
|
|
called function says anything special about how to indent the line.
|
|
|
|
INDENT-POINT is the position where the user typed TAB, or equivalent.
|
|
Point is located at the point to indent under (for default indentation);
|
|
STATE is the `parse-partial-sexp' state for that position.
|
|
|
|
If the current line is in a call to a Lisp function
|
|
which has a non-nil property `lisp-indent-function',
|
|
that specifies how to do the indentation. The property value can be
|
|
* `defun', meaning indent `defun'-style;
|
|
* an integer N, meaning indent the first N arguments specially
|
|
like ordinary function arguments and then indent any further
|
|
arguments like a body;
|
|
* a function to call just as this function was called.
|
|
If that function returns nil, that means it doesn't specify
|
|
the indentation.
|
|
|
|
This function also returns nil meaning don't specify the indentation."
|
|
(let ((normal-indent (current-column)))
|
|
(goto-char (1+ (elt state 1)))
|
|
(parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
|
|
(if (and (elt state 2)
|
|
(not (looking-at "\\sw\\|\\s_")))
|
|
;; car of form doesn't seem to be a symbol
|
|
(progn
|
|
(if (not (> (save-excursion (forward-line 1) (point))
|
|
calculate-lisp-indent-last-sexp))
|
|
(progn (goto-char calculate-lisp-indent-last-sexp)
|
|
(beginning-of-line)
|
|
(parse-partial-sexp (point)
|
|
calculate-lisp-indent-last-sexp 0 t)))
|
|
;; Indent under the list or under the first sexp on the same
|
|
;; line as calculate-lisp-indent-last-sexp. Note that first
|
|
;; thing on that line has to be complete sexp since we are
|
|
;; inside the innermost containing sexp.
|
|
(backward-prefix-chars)
|
|
(current-column))
|
|
(let ((function (buffer-substring (point)
|
|
(progn (forward-sexp 1) (point))))
|
|
method)
|
|
(setq method (or (get (intern-soft function) 'lisp-indent-function)
|
|
(get (intern-soft function) 'lisp-indent-hook)))
|
|
(cond ((or (eq method 'defun)
|
|
(and (null method)
|
|
(> (length function) 3)
|
|
(string-match "\\`def" function)))
|
|
(lisp-indent-defform state indent-point))
|
|
((integerp method)
|
|
(lisp-indent-specform method state
|
|
indent-point normal-indent))
|
|
(method
|
|
(funcall method indent-point state)))))))
|
|
|
|
(defcustom lisp-body-indent 2
|
|
"Number of columns to indent the second line of a `(def...)' form."
|
|
:group 'lisp
|
|
:type 'integer)
|
|
(put 'lisp-body-indent 'safe-local-variable 'integerp)
|
|
|
|
(defun lisp-indent-specform (count state indent-point normal-indent)
|
|
(let ((containing-form-start (elt state 1))
|
|
(i count)
|
|
body-indent containing-form-column)
|
|
;; Move to the start of containing form, calculate indentation
|
|
;; to use for non-distinguished forms (> count), and move past the
|
|
;; function symbol. lisp-indent-function guarantees that there is at
|
|
;; least one word or symbol character following open paren of containing
|
|
;; form.
|
|
(goto-char containing-form-start)
|
|
(setq containing-form-column (current-column))
|
|
(setq body-indent (+ lisp-body-indent containing-form-column))
|
|
(forward-char 1)
|
|
(forward-sexp 1)
|
|
;; Now find the start of the last form.
|
|
(parse-partial-sexp (point) indent-point 1 t)
|
|
(while (and (< (point) indent-point)
|
|
(condition-case ()
|
|
(progn
|
|
(setq count (1- count))
|
|
(forward-sexp 1)
|
|
(parse-partial-sexp (point) indent-point 1 t))
|
|
(error nil))))
|
|
;; Point is sitting on first character of last (or count) sexp.
|
|
(if (> count 0)
|
|
;; A distinguished form. If it is the first or second form use double
|
|
;; lisp-body-indent, else normal indent. With lisp-body-indent bound
|
|
;; to 2 (the default), this just happens to work the same with if as
|
|
;; the older code, but it makes unwind-protect, condition-case,
|
|
;; with-output-to-temp-buffer, et. al. much more tasteful. The older,
|
|
;; less hacked, behavior can be obtained by replacing below with
|
|
;; (list normal-indent containing-form-start).
|
|
(if (<= (- i count) 1)
|
|
(list (+ containing-form-column (* 2 lisp-body-indent))
|
|
containing-form-start)
|
|
(list normal-indent containing-form-start))
|
|
;; A non-distinguished form. Use body-indent if there are no
|
|
;; distinguished forms and this is the first undistinguished form,
|
|
;; or if this is the first undistinguished form and the preceding
|
|
;; distinguished form has indentation at least as great as body-indent.
|
|
(if (or (and (= i 0) (= count 0))
|
|
(and (= count 0) (<= body-indent normal-indent)))
|
|
body-indent
|
|
normal-indent))))
|
|
|
|
(defun lisp-indent-defform (state indent-point)
|
|
(goto-char (car (cdr state)))
|
|
(forward-line 1)
|
|
(if (> (point) (car (cdr (cdr state))))
|
|
(progn
|
|
(goto-char (car (cdr state)))
|
|
(+ lisp-body-indent (current-column)))))
|
|
|
|
|
|
;; (put 'progn 'lisp-indent-function 0), say, causes progn to be indented
|
|
;; like defun if the first form is placed on the next line, otherwise
|
|
;; it is indented like any other form (i.e. forms line up under first).
|
|
|
|
(put 'lambda 'lisp-indent-function 'defun)
|
|
(put 'autoload 'lisp-indent-function 'defun)
|
|
(put 'progn 'lisp-indent-function 0)
|
|
(put 'prog1 'lisp-indent-function 1)
|
|
(put 'prog2 'lisp-indent-function 2)
|
|
(put 'save-excursion 'lisp-indent-function 0)
|
|
(put 'save-window-excursion 'lisp-indent-function 0)
|
|
(put 'save-selected-window 'lisp-indent-function 0)
|
|
(put 'save-restriction 'lisp-indent-function 0)
|
|
(put 'save-match-data 'lisp-indent-function 0)
|
|
(put 'save-current-buffer 'lisp-indent-function 0)
|
|
(put 'with-current-buffer 'lisp-indent-function 1)
|
|
(put 'combine-after-change-calls 'lisp-indent-function 0)
|
|
(put 'with-output-to-string 'lisp-indent-function 0)
|
|
(put 'with-temp-file 'lisp-indent-function 1)
|
|
(put 'with-temp-buffer 'lisp-indent-function 0)
|
|
(put 'with-temp-message 'lisp-indent-function 1)
|
|
(put 'with-syntax-table 'lisp-indent-function 1)
|
|
(put 'let 'lisp-indent-function 1)
|
|
(put 'let* 'lisp-indent-function 1)
|
|
(put 'while 'lisp-indent-function 1)
|
|
(put 'if 'lisp-indent-function 2)
|
|
(put 'read-if 'lisp-indent-function 2)
|
|
(put 'catch 'lisp-indent-function 1)
|
|
(put 'condition-case 'lisp-indent-function 2)
|
|
(put 'unwind-protect 'lisp-indent-function 1)
|
|
(put 'with-output-to-temp-buffer 'lisp-indent-function 1)
|
|
(put 'eval-after-load 'lisp-indent-function 1)
|
|
(put 'dolist 'lisp-indent-function 1)
|
|
(put 'dotimes 'lisp-indent-function 1)
|
|
(put 'when 'lisp-indent-function 1)
|
|
(put 'unless 'lisp-indent-function 1)
|
|
|
|
(defun indent-sexp (&optional endpos)
|
|
"Indent each line of the list starting just after point.
|
|
If optional arg ENDPOS is given, indent each line, stopping when
|
|
ENDPOS is encountered."
|
|
(interactive)
|
|
(let ((indent-stack (list nil))
|
|
(next-depth 0)
|
|
;; If ENDPOS is non-nil, use nil as STARTING-POINT
|
|
;; so that calculate-lisp-indent will find the beginning of
|
|
;; the defun we are in.
|
|
;; If ENDPOS is nil, it is safe not to scan before point
|
|
;; since every line we indent is more deeply nested than point is.
|
|
(starting-point (if endpos nil (point)))
|
|
(last-point (point))
|
|
last-depth bol outer-loop-done inner-loop-done state this-indent)
|
|
(or endpos
|
|
;; Get error now if we don't have a complete sexp after point.
|
|
(save-excursion (forward-sexp 1)))
|
|
(save-excursion
|
|
(setq outer-loop-done nil)
|
|
(while (if endpos (< (point) endpos)
|
|
(not outer-loop-done))
|
|
(setq last-depth next-depth
|
|
inner-loop-done nil)
|
|
;; Parse this line so we can learn the state
|
|
;; to indent the next line.
|
|
;; This inner loop goes through only once
|
|
;; unless a line ends inside a string.
|
|
(while (and (not inner-loop-done)
|
|
(not (setq outer-loop-done (eobp))))
|
|
(setq state (parse-partial-sexp (point) (progn (end-of-line) (point))
|
|
nil nil state))
|
|
(setq next-depth (car state))
|
|
;; If the line contains a comment other than the sort
|
|
;; that is indented like code,
|
|
;; indent it now with indent-for-comment.
|
|
;; Comments indented like code are right already.
|
|
;; In any case clear the in-comment flag in the state
|
|
;; because parse-partial-sexp never sees the newlines.
|
|
(if (car (nthcdr 4 state))
|
|
(progn (indent-for-comment)
|
|
(end-of-line)
|
|
(setcar (nthcdr 4 state) nil)))
|
|
;; If this line ends inside a string,
|
|
;; go straight to next line, remaining within the inner loop,
|
|
;; and turn off the \-flag.
|
|
(if (car (nthcdr 3 state))
|
|
(progn
|
|
(forward-line 1)
|
|
(setcar (nthcdr 5 state) nil))
|
|
(setq inner-loop-done t)))
|
|
(and endpos
|
|
(<= next-depth 0)
|
|
(progn
|
|
(setq indent-stack (nconc indent-stack
|
|
(make-list (- next-depth) nil))
|
|
last-depth (- last-depth next-depth)
|
|
next-depth 0)))
|
|
(forward-line 1)
|
|
;; Decide whether to exit.
|
|
(if endpos
|
|
;; If we have already reached the specified end,
|
|
;; give up and do not reindent this line.
|
|
(if (<= endpos (point))
|
|
(setq outer-loop-done t))
|
|
;; If no specified end, we are done if we have finished one sexp.
|
|
(if (<= next-depth 0)
|
|
(setq outer-loop-done t)))
|
|
(unless outer-loop-done
|
|
(while (> last-depth next-depth)
|
|
(setq indent-stack (cdr indent-stack)
|
|
last-depth (1- last-depth)))
|
|
(while (< last-depth next-depth)
|
|
(setq indent-stack (cons nil indent-stack)
|
|
last-depth (1+ last-depth)))
|
|
;; Now indent the next line according
|
|
;; to what we learned from parsing the previous one.
|
|
(setq bol (point))
|
|
(skip-chars-forward " \t")
|
|
;; But not if the line is blank, or just a comment
|
|
;; (except for double-semi comments; indent them as usual).
|
|
(if (or (eobp) (looking-at "\\s<\\|\n"))
|
|
nil
|
|
(if (and (car indent-stack)
|
|
(>= (car indent-stack) 0))
|
|
(setq this-indent (car indent-stack))
|
|
(let ((val (calculate-lisp-indent
|
|
(if (car indent-stack) (- (car indent-stack))
|
|
starting-point))))
|
|
(if (null val)
|
|
(setq this-indent val)
|
|
(if (integerp val)
|
|
(setcar indent-stack
|
|
(setq this-indent val))
|
|
(setcar indent-stack (- (car (cdr val))))
|
|
(setq this-indent (car val))))))
|
|
(if (and this-indent (/= (current-column) this-indent))
|
|
(progn (delete-region bol (point))
|
|
(indent-to this-indent)))))
|
|
(or outer-loop-done
|
|
(setq outer-loop-done (= (point) last-point))
|
|
(setq last-point (point)))))))
|
|
|
|
(defun lisp-indent-region (start end)
|
|
"Indent every line whose first char is between START and END inclusive."
|
|
(save-excursion
|
|
(let ((endmark (copy-marker end)))
|
|
(goto-char start)
|
|
(and (bolp) (not (eolp))
|
|
(lisp-indent-line))
|
|
(indent-sexp endmark)
|
|
(set-marker endmark nil))))
|
|
|
|
(defun indent-pp-sexp (&optional arg)
|
|
"Indent each line of the list starting just after point, or prettyprint it.
|
|
A prefix argument specifies pretty-printing."
|
|
(interactive "P")
|
|
(if arg
|
|
(save-excursion
|
|
(save-restriction
|
|
(narrow-to-region (point) (progn (forward-sexp 1) (point)))
|
|
(pp-buffer)
|
|
(goto-char (point-max))
|
|
(if (eq (char-before) ?\n)
|
|
(delete-char -1)))))
|
|
(indent-sexp))
|
|
|
|
;;;; Lisp paragraph filling commands.
|
|
|
|
(defcustom emacs-lisp-docstring-fill-column 65
|
|
"Value of `fill-column' to use when filling a docstring.
|
|
Any non-integer value means do not use a different value of
|
|
`fill-column' when filling docstrings."
|
|
:type '(choice (integer)
|
|
(const :tag "Use the current `fill-column'" t))
|
|
:group 'lisp)
|
|
|
|
(defun lisp-fill-paragraph (&optional justify)
|
|
"Like \\[fill-paragraph], but handle Emacs Lisp comments and docstrings.
|
|
If any of the current line is a comment, fill the comment or the
|
|
paragraph of it that point is in, preserving the comment's indentation
|
|
and initial semicolons."
|
|
(interactive "P")
|
|
(or (fill-comment-paragraph justify)
|
|
;; Since fill-comment-paragraph returned nil, that means we're not in
|
|
;; a comment: Point is on a program line; we are interested
|
|
;; particularly in docstring lines.
|
|
;;
|
|
;; We bind `paragraph-start' and `paragraph-separate' temporarily. They
|
|
;; are buffer-local, but we avoid changing them so that they can be set
|
|
;; to make `forward-paragraph' and friends do something the user wants.
|
|
;;
|
|
;; `paragraph-start': The `(' in the character alternative and the
|
|
;; left-singlequote plus `(' sequence after the \\| alternative prevent
|
|
;; sexps and backquoted sexps that follow a docstring from being filled
|
|
;; with the docstring. This setting has the consequence of inhibiting
|
|
;; filling many program lines that are not docstrings, which is sensible,
|
|
;; because the user probably asked to fill program lines by accident, or
|
|
;; expecting indentation (perhaps we should try to do indenting in that
|
|
;; case). The `;' and `:' stop the paragraph being filled at following
|
|
;; comment lines and at keywords (e.g., in `defcustom'). Left parens are
|
|
;; escaped to keep font-locking, filling, & paren matching in the source
|
|
;; file happy.
|
|
;;
|
|
;; `paragraph-separate': A clever regexp distinguishes the first line of
|
|
;; a docstring and identifies it as a paragraph separator, so that it
|
|
;; won't be filled. (Since the first line of documentation stands alone
|
|
;; in some contexts, filling should not alter the contents the author has
|
|
;; chosen.) Only the first line of a docstring begins with whitespace
|
|
;; and a quotation mark and ends with a period or (rarely) a comma.
|
|
;;
|
|
;; The `fill-column' is temporarily bound to
|
|
;; `emacs-lisp-docstring-fill-column' if that value is an integer.
|
|
(let ((paragraph-start (concat paragraph-start
|
|
"\\|\\s-*\\([(;:\"]\\|`(\\|#'(\\)"))
|
|
(paragraph-separate
|
|
(concat paragraph-separate "\\|\\s-*\".*[,\\.]$"))
|
|
(fill-column (if (and (integerp emacs-lisp-docstring-fill-column)
|
|
(derived-mode-p 'emacs-lisp-mode))
|
|
emacs-lisp-docstring-fill-column
|
|
fill-column)))
|
|
(fill-paragraph justify))
|
|
;; Never return nil.
|
|
t))
|
|
|
|
(defun indent-code-rigidly (start end arg &optional nochange-regexp)
|
|
"Indent all lines of code, starting in the region, sideways by ARG columns.
|
|
Does not affect lines starting inside comments or strings, assuming that
|
|
the start of the region is not inside them.
|
|
|
|
Called from a program, takes args START, END, COLUMNS and NOCHANGE-REGEXP.
|
|
The last is a regexp which, if matched at the beginning of a line,
|
|
means don't indent that line."
|
|
(interactive "r\np")
|
|
(let (state)
|
|
(save-excursion
|
|
(goto-char end)
|
|
(setq end (point-marker))
|
|
(goto-char start)
|
|
(or (bolp)
|
|
(setq state (parse-partial-sexp (point)
|
|
(progn
|
|
(forward-line 1) (point))
|
|
nil nil state)))
|
|
(while (< (point) end)
|
|
(or (car (nthcdr 3 state))
|
|
(and nochange-regexp
|
|
(looking-at nochange-regexp))
|
|
;; If line does not start in string, indent it
|
|
(let ((indent (current-indentation)))
|
|
(delete-region (point) (progn (skip-chars-forward " \t") (point)))
|
|
(or (eolp)
|
|
(indent-to (max 0 (+ indent arg)) 0))))
|
|
(setq state (parse-partial-sexp (point)
|
|
(progn
|
|
(forward-line 1) (point))
|
|
nil nil state))))))
|
|
|
|
(provide 'lisp-mode)
|
|
|
|
;; arch-tag: 414c7f93-c245-4b77-8ed5-ed05ef7ff1bf
|
|
;;; lisp-mode.el ends here
|