1 ;;; cc-menus.el --- imenu support for CC Mode
3 ;; Copyright (C) 1985, 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
4 ;; 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
5 ;; Free Software Foundation, Inc.
7 ;; Authors: 1998- Martin Stjernholm
8 ;; 1992-1999 Barry A. Warsaw
10 ;; 1987 Stewart Clamen
11 ;; 1985 Richard M. Stallman
12 ;; Maintainer: bug-cc-mode@gnu.org
13 ;; Created: 22-Apr-1997 (split from cc-mode.el)
14 ;; Version: See cc-mode.el
15 ;; Keywords: c languages oop
17 ;; This file is part of GNU Emacs.
19 ;; GNU Emacs is free software: you can redistribute it and/or modify
20 ;; it under the terms of the GNU General Public License as published by
21 ;; the Free Software Foundation, either version 3 of the License, or
22 ;; (at your option) any later version.
24 ;; GNU Emacs is distributed in the hope that it will be useful,
25 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
26 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 ;; GNU General Public License for more details.
29 ;; You should have received a copy of the GNU General Public License
30 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
38 (if (and (boundp 'byte-compile-dest-file)
39 (stringp byte-compile-dest-file))
40 (cons (file-name-directory byte-compile-dest-file) load-path)
42 (load "cc-bytecomp" nil t)))
46 ;; The things referenced in imenu, which we don't require.
47 (cc-bytecomp-defvar imenu-case-fold-search)
48 (cc-bytecomp-defvar imenu-generic-expression)
49 (cc-bytecomp-defvar imenu-create-index-function)
53 (defvar cc-imenu-c-prototype-macro-regexp nil
54 "RE matching macro names used to conditionally specify function prototypes.
61 #define _P(x) /*nothing*/
64 int main _P( (int argc, char *argv[]) )
66 A sample value might look like: `\\(_P\\|_PROTO\\)'.")
68 (defvar cc-imenu-c++-generic-expression
70 ;; Try to match ::operator definitions first. Otherwise `X::operator new ()'
71 ;; will be incorrectly recognised as function `new ()' because the regexps
72 ;; work by backtracking from the end of the definition.
76 "[^" c-alnum "_:<>~]" ; match any non-identifier char
77 ; (note: this can be `\n')
79 "\\([" c-alnum "_:<>~]*::\\)?" ; match an operator
81 "\\(()\\|[^(]*\\)" ; special case for `()' operator
84 "[ \t]*([^)]*)[ \t]*[^ \t;]" ; followed by ws, arg list,
85 ; require something other than
86 ; a `;' after the (...) to
87 ; avoid prototypes. Can't
88 ; catch cases with () inside
89 ; the parentheses surrounding
90 ; the parameters. e.g.:
91 ; `int foo(int a=bar()) {...}'
93 ;; Special case to match a line like `main() {}'
94 ;; e.g. no return type, not even on the previous line.
98 "\\([" c-alpha "_][" c-alnum "_:<>~]*\\)" ; match function name
99 "[ \t]*(" ; see above, BUT
100 "[ \t]*\\([^ \t(*][^)]*\\)?)" ; the arg list must not start
101 "[ \t]*[^ \t;(]" ; with an asterisk or parentheses
103 ;; General function name regexp
106 "^\\<" ; line MUST start with word char
107 ;; \n added to prevent overflow in regexp matcher.
108 ;; http://lists.gnu.org/archive/html/emacs-pretest-bug/2007-02/msg00021.html
109 "[^()\n]*" ; no parentheses before
110 "[^" c-alnum "_:<>~]" ; match any non-identifier char
111 "\\([" c-alpha "_][" c-alnum "_:<>~]*\\)" ; match function name
112 "\\([ \t\n]\\|\\\\\n\\)*(" ; see above, BUT the arg list
113 "\\([ \t\n]\\|\\\\\n\\)*\\([^ \t\n(*][^)]*\\)?)" ; must not start
114 "\\([ \t\n]\\|\\\\\n\\)*[^ \t\n;(]" ; with an asterisk or parentheses
116 ;; Special case for definitions using phony prototype macros like:
117 ;; `int main _PROTO( (int argc,char *argv[]) )'.
118 ;; This case is only included if cc-imenu-c-prototype-macro-regexp is set.
119 ;; Only supported in c-code, so no `:<>~' chars in function name!
120 ,@(if cc-imenu-c-prototype-macro-regexp
123 "^\\<.*" ; line MUST start with word char
124 "[^" c-alnum "_]" ; match any non-identifier char
125 "\\([" c-alpha "_][" c-alnum "_]*\\)" ; match function name
126 "[ \t]*" ; whitespace before macro name
127 cc-imenu-c-prototype-macro-regexp
128 "[ \t]*(" ; ws followed by first paren.
129 "[ \t]*([^)]*)[ \t]*)[ \t]*[^ \t;]" ; see above
134 "^" ; beginning of line is required
135 "\\(template[ \t]*<[^>]+>[ \t]*\\)?" ; there may be a `template <...>'
136 "\\(class\\|struct\\)[ \t]+"
137 "\\(" ; the string we want to get
138 "[" c-alnum "_]+" ; class name
139 "\\(<[^>]+>\\)?" ; possibly explicitly specialized
141 "\\([ \t\n]\\|\\\\\n\\)*[:{]"
143 "Imenu generic expression for C++ mode. See `imenu-generic-expression'.")
145 (defvar cc-imenu-c-generic-expression
146 cc-imenu-c++-generic-expression
147 "Imenu generic expression for C mode. See `imenu-generic-expression'.")
149 (defvar cc-imenu-java-generic-expression
152 "[" c-alpha "_][\]\[." c-alnum "_]+[ \t\n\r]+" ; type spec
153 "\\([" c-alpha "_][" c-alnum "_]+\\)" ; method name
155 ;; An argument list that is either empty or contains at least
156 ;; two identifiers with only space between them. This avoids
157 ;; matching e.g. "else if (foo)".
158 (concat "([ \t\n\r]*"
159 "\\([\]\[.," c-alnum "_]+"
161 "[\]\[.," c-alnum "_]"
162 "[\]\[.," c-alnum "_ \t\n\r]*"
164 "[.," c-alnum "_ \t\n\r]*"
167 "Imenu generic expression for Java mode. See `imenu-generic-expression'.")
169 ;; *Warning for cc-mode developers*
171 ;; `cc-imenu-objc-generic-expression' elements depend on
172 ;; `cc-imenu-c++-generic-expression'. So if you change this
173 ;; expression, you need to change following variables,
174 ;; `cc-imenu-objc-generic-expression-*-index',
175 ;; too. `cc-imenu-objc-function' uses these *-index variables, in
176 ;; order to know where the each regexp *group \\(foobar\\)* elements
179 ;; *-index variables are initialized during `cc-imenu-objc-generic-expression'
180 ;; being initialized.
183 ;; Internal variables
184 (defvar cc-imenu-objc-generic-expression-noreturn-index nil)
185 (defvar cc-imenu-objc-generic-expression-general-func-index nil)
186 (defvar cc-imenu-objc-generic-expression-proto-index nil)
187 (defvar cc-imenu-objc-generic-expression-objc-base-index nil)
189 (defvar cc-imenu-objc-generic-expression
194 ;; > Special case to match a line like `main() {}'
195 ;; > e.g. no return type, not even on the previous line.
196 ;; Pick a token by (match-string 1)
197 (car (cdr (nth 1 cc-imenu-c++-generic-expression))) ; -> index += 2
198 (prog2 (setq cc-imenu-objc-generic-expression-noreturn-index 1) "")
200 ;; > General function name regexp
201 ;; Pick a token by (match-string 3)
202 (car (cdr (nth 2 cc-imenu-c++-generic-expression))) ; -> index += 5
203 (prog2 (setq cc-imenu-objc-generic-expression-general-func-index 3) "")
204 ;; > Special case for definitions using phony prototype macros like:
205 ;; > `int main _PROTO( (int argc,char *argv[]) )'.
206 ;; Pick a token by (match-string 8)
207 (if cc-imenu-c-prototype-macro-regexp
210 (car (cdr (nth 3 cc-imenu-c++-generic-expression))) ; -> index += 1
211 (prog2 (setq cc-imenu-objc-generic-expression-objc-base-index 9) "")
213 (prog2 (setq cc-imenu-objc-generic-expression-objc-base-index 8) "")
215 (prog2 (setq cc-imenu-objc-generic-expression-proto-index 8) "")
218 ;; Pick a token by (match-string 8 or 9)
221 "^[-+][:" c-alnum "()*_<>\n\t ]*[;{]" ; Methods
223 "^@interface[\t ]+[" c-alnum "_]+[\t ]*:"
225 "^@interface[\t ]+[" c-alnum "_]+[\t ]*([" c-alnum "_]+)"
227 ;; For NSObject, NSProxy and Object... They don't have super class.
228 "^@interface[\t ]+[" c-alnum "_]+[\t ]*.*$"
230 "^@implementation[\t ]+[" c-alnum "_]+[\t ]*([" c-alnum "_]+)"
232 "^@implementation[\t ]+[" c-alnum "_]+"
234 "^@protocol[\t ]+[" c-alnum "_]+" "\\)")
235 "Imenu generic expression for ObjC mode. See `imenu-generic-expression'.")
238 ;; Imenu support for objective-c uses functions.
239 (defsubst cc-imenu-objc-method-to-selector (method)
240 "Return the objc selector style string of METHOD.
242 - perform: (SEL)aSelector withObject: object1 withObject: object2; /* METHOD */
244 -perform:withObject:withObject:withObject: /* selector */"
245 (let ((return "") ; String to be returned
246 (p 0) ; Current scanning position in METHOD
247 (pmax (length method)) ;
248 char ; Current scanning target
249 (betweenparen 0) ; CHAR is in parentheses.
250 argreq ; An argument is required.
251 inargvar) ; position of CHAR is in an argument variable.
253 (setq char (aref method p)
256 ;; Is CHAR part of a objc token?
257 ((and (not inargvar) ; Ignore if CHAR is part of an argument variable.
258 (eq 0 betweenparen) ; Ignore if CHAR is in parentheses.
259 (or (and (<= ?a char) (<= char ?z))
260 (and (<= ?A char) (<= char ?Z))
261 (and (<= ?0 char) (<= char ?9))
266 (setq return (concat return (char-to-string char)))))
268 ((and inargvar (or (eq ?\ char) (eq ?\n char))
269 (setq inargvar nil)))
270 ;; Or a method separator?
271 ;; If a method separator, the next token will be an argument variable.
274 return (concat return (char-to-string char))))
275 ;; Or an open parentheses?
277 (setq betweenparen (1+ betweenparen)))
278 ;; Or a close parentheses?
280 (setq betweenparen (1- betweenparen)))))
283 (defun cc-imenu-objc-remove-white-space (str)
284 "Remove all spaces and tabs from STR."
290 (setq char (aref str p))
292 (if (or (= char ?\ ) (= char ?\t))
294 (setq return (concat return (char-to-string char)))))
297 (defun cc-imenu-objc-function ()
298 "Imenu support for Objective C mode."
302 ;; OBJC, Cnoreturn, Cgeneralfunc, Cproto are constants.
304 ;; *Warning for developers*
305 ;; These constants depend on `cc-imenu-c++-generic-expression'.
307 (OBJC cc-imenu-objc-generic-expression-objc-base-index)
308 ;; Special case to match a line like `main() {}'
309 (Cnoreturn cc-imenu-objc-generic-expression-noreturn-index)
310 ;; General function name regexp
311 (Cgeneralfunc cc-imenu-objc-generic-expression-general-func-index)
312 ;; Special case for definitions using phony prototype macros like:
313 (Cproto cc-imenu-objc-generic-expression-proto-index)
320 (intflen (length "@interface"))
321 (implen (length "@implementation"))
322 (prtlen (length "@protocol"))
325 ;; Does this emacs have buffer-substring-no-properties?
327 (if (fboundp 'buffer-substring-no-properties)
328 'buffer-substring-no-properties
330 (goto-char (point-max))
332 (while (re-search-backward cc-imenu-objc-generic-expression nil t)
333 (setq langnum (if (match-beginning OBJC)
336 ((match-beginning Cproto) Cproto)
337 ((match-beginning Cgeneralfunc) Cgeneralfunc)
338 ((match-beginning Cnoreturn) Cnoreturn))))
339 (setq str (funcall func (match-beginning langnum) (match-end langnum)))
345 ((not (eq langnum OBJC))
346 (setq clist (cons (cons str (match-beginning langnum)) clist)))
350 ;; An instance Method
351 ((eq (aref str 0) ?-)
352 (setq str (concat "-" (cc-imenu-objc-method-to-selector str)))
353 (setq methodlist (cons (cons str
354 (match-beginning langnum))
357 ((eq (aref str 0) ?+)
358 (setq str (concat "+" (cc-imenu-objc-method-to-selector str)))
359 (setq methodlist (cons (cons str
360 (match-beginning langnum))
362 ;; Interface or implementation or protocol
363 ((eq (aref str 0) ?@)
364 (setq classcount (1+ classcount))
366 ((and (> (length str) implen)
367 (string= (substring str 0 implen) "@implementation"))
368 (setq str (substring str implen)
369 str2 "@implementation"))
370 ((string= (substring str 0 intflen) "@interface")
371 (setq str (substring str intflen)
373 ((string= (substring str 0 prtlen) "@protocol")
374 (setq str (substring str prtlen)
376 (setq str (cc-imenu-objc-remove-white-space str))
377 (setq methodlist (cons (cons str2
378 (match-beginning langnum))
380 (setq toplist (cons nil (cons (cons str
381 methodlist) toplist))
384 (if (eq (car toplist) nil)
385 (setq toplist (cdr toplist)))
387 ;; In this buffer, there is only one or zero @{interface|implementation|protocol}.
389 (let ((classname (car (car toplist)))
390 (p (cdr (car (cdr (car toplist)))))
392 (setq toplist (cons (cons classname p) (cdr (cdr (car toplist)))))
398 (setq last (cdr last)))
399 (setcdr last clist))))
400 ;; Add C lang tokens as a sub menu
402 (setq toplist (cons (cons "C" clist) toplist))))
407 ;(defvar cc-imenu-pike-generic-expression
409 ; FIXME: Please contribute one!
411 (defun cc-imenu-init (mode-generic-expression
412 &optional mode-create-index-function)
413 (setq imenu-generic-expression mode-generic-expression
414 imenu-case-fold-search nil)
415 (when mode-create-index-function
416 (setq imenu-create-index-function mode-create-index-function)))
419 (cc-provide 'cc-menus)
421 ;; arch-tag: f6b60933-91f0-4145-ab44-70ca6d1b919b
422 ;;; cc-menus.el ends here