unofficial mirror of emacs-devel@gnu.org 
 help / color / mirror / code / Atom feed
blob 0ff6efb7d373bd93a505ce40e2f87bd3bdbf79be 17571 bytes (raw)
name: lisp/progmodes/cc-menus.el 	 # note: path name is non-authoritative(*)

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
 
;;; cc-menus.el --- imenu support for CC Mode

;; Copyright (C) 1985, 1987, 1992-2021 Free Software Foundation, Inc.

;; Authors:    1998- Martin Stjernholm
;;             1992-1999 Barry A. Warsaw
;;             1987 Dave Detlefs
;;             1987 Stewart Clamen
;;             1985 Richard M. Stallman
;; Maintainer: bug-cc-mode@gnu.org
;; Created:    22-Apr-1997 (split from cc-mode.el)
;; Keywords:   c languages
;; Package:    cc-mode

;; 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 <https://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

(eval-when-compile
  (let ((load-path
	 (if (and (boundp 'byte-compile-dest-file)
		  (stringp byte-compile-dest-file))
	     (cons (file-name-directory byte-compile-dest-file) load-path)
	   load-path)))
    (load "cc-bytecomp" nil t)))

(cc-require 'cc-defs)

;; The things referenced in imenu, which we don't require.
(cc-bytecomp-defvar imenu-case-fold-search)
(cc-bytecomp-defvar imenu-generic-expression)
(cc-bytecomp-defvar imenu-create-index-function)
(cc-bytecomp-defun c-literal-limits)

\f
;; imenu integration
(defvar cc-imenu-c-prototype-macro-regexp nil
  "RE matching macro names used to conditionally specify function prototypes.

For example:

    #ifdef __STDC__
      #define _P(x) x
    #else
      #define _P(x) /*nothing*/
    #endif

    int main _P( (int argc, char *argv[]) )

A sample value might look like: `\\(_P\\|_PROTO\\)'.")

;;			  *Warning for cc-mode developers*
;;
;; `cc-imenu-objc-generic-expression' elements depend on
;; `cc-imenu-c++-generic-expression'. So if you change this
;; expression, you need to change following variables,
;; `cc-imenu-objc-generic-expression-*-index',
;; too. `cc-imenu-objc-function' uses these *-index variables, in
;; order to know where the each regexp *group \\(foobar\\)* elements
;; are started.
;;
;; *-index variables are initialized during `cc-imenu-objc-generic-expression'
;; being initialized.
;;

(defvar cc-imenu-c++-generic-expression
  `(
    ;; Try to match ::operator definitions first. Otherwise `X::operator new ()'
    ;; will be incorrectly recognized as function `new ()' because the regexps
    ;; work by backtracking from the end of the definition.
    (nil
     ,(concat
       "^\\<.*"
       "[^" c-alnum "_:<>~]"                  ; match any non-identifier char
                                              ; (note: this can be `\n')
       "\\("
	  "\\([" c-alnum "_:<>~]*::\\)?"      ; match an operator
          "operator\\>[ \t]*"
          "\\(()\\|[^(]*\\)"                  ; special case for `()' operator
       "\\)"

       "[ \t]*([^)]*)[ \t]*[^ \t;]"           ; followed by ws, arg list,
                                              ; require something other than
                                              ; a `;' after the (...) to
                                              ; avoid prototypes.  Can't
                                              ; catch cases with () inside
                                              ; the parentheses surrounding
                                              ; the parameters.  e.g.:
                                              ; `int foo(int a=bar()) {...}'
       ) 1)
    ;; Special case to match a line like `main() {}'
    ;; e.g. no return type, not even on the previous line.
    (nil
     ,(concat
       "^"
       "\\([" c-alpha "_][" c-alnum "_:<>~]*\\)" ; match function name
       "[ \t]*("			      ; see above, BUT
       "[ \t]*\\([^ \t(*][^)]*\\)?)"          ; the arg list must not start
       "[ \t]*[^ \t;(]"                       ; with an asterisk or parentheses
       ) 1)
    ;; General function name regexp
    (nil
     ,(concat
       "^\\<"                                 ; line MUST start with word char
       ;; \n added to prevent overflow in regexp matcher.
       ;; https://lists.gnu.org/r/emacs-pretest-bug/2007-02/msg00021.html
       "[^()\n]*"                             ; no parentheses before
       "[^" c-alnum "_:<>~]"                  ; match any non-identifier char
       "\\([" c-alpha "_][" c-alnum "_:<>~]*\\)" ; match function name
       "\\([ \t\n]\\|\\\\\n\\)*("	      ; see above, BUT the arg list
       "\\([ \t\n]\\|\\\\\n\\)*"	      ; must not start
       "\\([^ \t\n(*]"			      ; with an asterisk or parentheses
       "[^()]*\\(([^()]*)[^()]*\\)*"	      ; Maybe function pointer arguments
       "\\)?)"
       "\\([ \t\n]\\|\\\\\n\\)*[^ \t\n;(]"
       ) 1)
    ;; Special case for definitions using phony prototype macros like:
    ;; `int main _PROTO( (int argc,char *argv[]) )'.
    ;; This case is only included if cc-imenu-c-prototype-macro-regexp is set.
    ;; Only supported in c-code, so no `:<>~' chars in function name!
    ,@(if cc-imenu-c-prototype-macro-regexp
            `((nil
                 ,(concat
                   "^\\<.*"                   ; line MUST start with word char
		   "[^" c-alnum "_]"          ; match any non-identifier char
		   "\\([" c-alpha "_][" c-alnum "_]*\\)" ; match function name
                   "[ \t]*"                   ; whitespace before macro name
                   cc-imenu-c-prototype-macro-regexp
                   "[ \t]*("                  ; ws followed by first paren.
                   "[ \t]*([^)]*)[ \t]*)[ \t]*[^ \t;]" ; see above
                   ) 1)))
    ;; Class definitions
    ("Class"
     ,(concat
         "^"                                  ; beginning of line is required
         "\\(template[ \t]*<[^>]+>[ \t]*\\)?" ; there may be a `template <...>'
         "\\(class\\|struct\\)[ \t]+"
         "\\("                                ; the string we want to get
	 "[" c-alnum "_]+"                    ; class name
         "\\(<[^>]+>\\)?"                     ; possibly explicitly specialized
         "\\)"
         "\\([ \t\n]\\|\\\\\n\\)*[:{]"
         ) 3))
  "Imenu generic expression for C++ mode.  See `imenu-generic-expression'.")

(defvar cc-imenu-c-generic-expression
  cc-imenu-c++-generic-expression
  "Imenu generic expression for C mode.  See `imenu-generic-expression'.")


;; Auxiliary regexps for Java try to match their trailing whitespace where
;; appropriate, but _not_ starting whitespace.

(defconst cc-imenu-java-ellipsis-regexp
  (concat
   "\\.\\{3\\}"
   "[ \t\n\r]*"))

(defun cc-imenu-java-build-type-args-regex (depth)
  "Builds regexp for type arguments list with DEPTH allowed
nested angle brackets constructs."
  (if (> depth 0)
      (concat "<"
		"[][.," c-alnum "_? \t\n\r]+"
		(if (> depth 1)
		    "\\(")
		(cc-imenu-java-build-type-args-regex (1- depth))
		(if (> depth 1)
		  (concat "[][.," c-alnum "_? \t\n\r]*"
			  "\\)*"))
	      ">")))

(defconst cc-imenu-java-type-spec-regexp
  (concat
   ;; zero or more identifiers followed by a dot
   "\\("
     "[" c-alpha "_][" c-alnum "_]*\\."
   "\\)*"
   ;; a single mandatory identifier without a dot
   "[" c-alpha "_][" c-alnum "_]*"
   ;; then choice:
   "\\("
   ;; (option 1) type arguments list which _may_ be followed with brackets
   ;; and/or spaces, then optional variable arity
     "[ \t\n\r]*"
     (cc-imenu-java-build-type-args-regex 3)
     "[][ \t\n\r]*"
     "\\(" cc-imenu-java-ellipsis-regexp "\\)?"
   "\\|"
   ;; (option 2) just brackets and/or spaces (there should be at least one),
   ;; then optional variable arity
     "[][ \t\n\r]+"
     "\\(" cc-imenu-java-ellipsis-regexp "\\)?"
   "\\|"
   ;; (option 3) just variable arity
     cc-imenu-java-ellipsis-regexp
   "\\)"))

(defconst cc-imenu-java-comment-regexp
  (concat
   "/"
   "\\("
   ;; a traditional comment
     "\\*"
     "\\("
       "[^*]"
     "\\|"
       "\\*+[^/*]"
     "\\)*"
     "\\*+/"
   "\\|"
   ;; an end-of-line comment
     "/[^\n\r]*[\n\r]"
   "\\)"
  "[ \t\n\r]*"
   ))

;; Comments are allowed before the argument, after any of the
;; modifiers and after the identifier.
(defconst cc-imenu-java-method-arg-regexp
  (concat
   "\\(" cc-imenu-java-comment-regexp "\\)*"
   ;; optional modifiers
   "\\("
     ;; a modifier is either an annotation or "final"
     "\\("
       "@[" c-alpha "_]"
       "[" c-alnum "._]*"
       ;; TODO support element-value pairs!
     "\\|"
       "final"
     "\\)"
     ;; a modifier ends with comments and/or ws
     "\\("
       "\\(" cc-imenu-java-comment-regexp "\\)+"
     "\\|"
       "[ \t\n\r]+"
       "\\(" cc-imenu-java-comment-regexp "\\)*"
     "\\)"
   "\\)*"
   ;; type spec
   cc-imenu-java-type-spec-regexp
   ;; identifier
   "[" c-alpha "_]"
   "[" c-alnum "_]*"
   ;; optional comments and/or ws
   "[ \t\n\r]*"
   "\\(" cc-imenu-java-comment-regexp "\\)*"
   ))

(defconst cc-imenu-java-generic-expression
  `((nil
     ,(concat
       cc-imenu-java-type-spec-regexp
       "\\("				      ; method name which gets captured
					      ; into index
         "[" c-alpha "_]"
	 "[" c-alnum "_]*"
       "\\)"
       "[ \t\n\r]*"
       ;; An argument list that contains zero or more arguments.
       (concat
	"("
	"[ \t\n\r]*"
	"\\("
	  "\\(" cc-imenu-java-method-arg-regexp ",[ \t\n\r]*\\)*"
	  cc-imenu-java-method-arg-regexp
	"\\)?"
	")"
	"[.,_" c-alnum " \t\n\r]*"	      ; throws etc.
	"{"
	)) 7))
  "Imenu generic expression for Java mode.  See `imenu-generic-expression'.")


;; Internal variables
(defvar cc-imenu-objc-generic-expression-noreturn-index nil)
(defvar cc-imenu-objc-generic-expression-general-func-index nil)
(defvar cc-imenu-objc-generic-expression-proto-index nil)
(defvar cc-imenu-objc-generic-expression-objc-base-index nil)

(defvar cc-imenu-objc-generic-expression
  (concat
   ;;
   ;; For C
   ;;
   ;; > Special case to match a line like `main() {}'
   ;; > e.g. no return type, not even on the previous line.
   ;; Pick a token by (match-string 1)
   (car (cdr (nth 1 cc-imenu-c++-generic-expression))) ; -> index += 2
   (prog2 (setq cc-imenu-objc-generic-expression-noreturn-index 1) "")
   "\\|"
   ;; > General function name regexp
   ;; Pick a token by  (match-string 3)
   (car (cdr (nth 2 cc-imenu-c++-generic-expression))) ; -> index += 6
   (prog2 (setq cc-imenu-objc-generic-expression-general-func-index 3) "")
   ;; > Special case for definitions using phony prototype macros like:
   ;; > `int main _PROTO( (int argc,char *argv[]) )'.
   ;; Pick a token by  (match-string 8)
   (if cc-imenu-c-prototype-macro-regexp
       (concat
	"\\|"
	(car (cdr (nth 3 cc-imenu-c++-generic-expression))) ; -> index += 1
	(prog2 (setq cc-imenu-objc-generic-expression-objc-base-index 10) "")
	)
     (prog2 (setq cc-imenu-objc-generic-expression-objc-base-index 9) "")
     "")				; -> index += 0
   (prog2 (setq cc-imenu-objc-generic-expression-proto-index 9) "")
   ;;
   ;; For Objective-C
   ;; Pick a token by (match-string 8 or 9)
   ;;
   "\\|\\("
   "^[-+][:" c-alnum "()*_<>\n\t ]*[;{]"        ; Methods
   "\\|"
   "^@interface[\t ]+[" c-alnum "_]+[\t ]*:"
   "\\|"
   "^@interface[\t ]+[" c-alnum "_]+[\t ]*([" c-alnum "_]+)"
   "\\|"
   ;; For NSObject, NSProxy and Object... They don't have super class.
   "^@interface[\t ]+[" c-alnum "_]+[\t ]*.*$"
   "\\|"
   "^@implementation[\t ]+[" c-alnum "_]+[\t ]*([" c-alnum "_]+)"
   "\\|"
   "^@implementation[\t ]+[" c-alnum "_]+"
   "\\|"
   "^@protocol[\t ]+[" c-alnum "_]+" "\\)")
  "Imenu generic expression for ObjC mode.  See `imenu-generic-expression'.")


;; Imenu support for objective-c uses functions.
(defsubst cc-imenu-objc-method-to-selector (method)
  "Return the objc selector style string of METHOD.
Example:
- perform: (SEL)aSelector withObject: object1 withObject: object2; /* METHOD */
=>
-perform:withObject:withObject:withObject: /* selector */"
  (let ((return "")			; String to be returned
	(p 0)				; Current scanning position in METHOD
	(pmax (length method))		;
	char				; Current scanning target
	(betweenparen 0)		; CHAR is in parentheses.
	argreq				; An argument is required.
	inargvar)			; position of CHAR is in an argument variable.
    (while (< p pmax)
      (setq char (aref method p)
	    p (1+ p))
      (cond
       ;; Is CHAR part of an objc token?
       ((and (not inargvar)   ; Ignore if CHAR is part of an argument variable.
	     (eq 0 betweenparen) ; Ignore if CHAR is in parentheses.
	     (or (and (<= ?a char) (<= char ?z))
		 (and (<= ?A char) (<= char ?Z))
		 (and (<= ?0 char) (<= char ?9))
		 (= ?_ char)))
	(if argreq
	    (setq inargvar t
		  argreq nil)
	  (setq return (concat return (char-to-string char)))))
       ;; Or a white space?
       ((and inargvar (or (eq ?\  char) (eq ?\n char))
	     (setq inargvar nil)))
       ;; Or a method separator?
       ;; If a method separator, the next token will be an argument variable.
       ((eq ?: char)
	(setq argreq t
	      return (concat return (char-to-string char))))
       ;; Or an open parentheses?
       ((eq ?\( char)
	(setq betweenparen (1+ betweenparen)))
       ;; Or a close parentheses?
       ((eq ?\) char)
	(setq betweenparen (1- betweenparen)))))
    return))

(defun cc-imenu-objc-remove-white-space  (str)
  "Remove all spaces and tabs from STR."
  (let ((return "")
	(p 0)
	(max (length str))
	char)
    (while (< p max)
      (setq char (aref str p))
      (setq p (1+ p))
      (if (or (= char ?\ ) (= char ?\t))
	  ()
	(setq return (concat return (char-to-string char)))))
    return))

(defun cc-imenu-objc-function ()
  "Imenu support for Objective C mode."
  (let (methodlist
	clist
	;;
	;; OBJC, Cnoreturn, Cgeneralfunc, Cproto are constants.
	;;
	;;                  *Warning for developers*
	;; These constants depend on `cc-imenu-c++-generic-expression'.
	;;
	(OBJC cc-imenu-objc-generic-expression-objc-base-index)
	;; Special case to match a line like `main() {}'
	(Cnoreturn cc-imenu-objc-generic-expression-noreturn-index)
	;; General function name regexp
	(Cgeneralfunc cc-imenu-objc-generic-expression-general-func-index)
	;; Special case for definitions using phony prototype macros like:
	(Cproto cc-imenu-objc-generic-expression-proto-index)
	langnum
	;;
	(classcount 0)
	toplist
	str
	str2
	(intflen (length "@interface"))
	(implen  (length "@implementation"))
	(prtlen  (length "@protocol"))
	(func
	 ;;
	 ;; Does this emacs have buffer-substring-no-properties?
	 ;;
	 (if (fboundp 'buffer-substring-no-properties)
	     'buffer-substring-no-properties
	   'buffer-substring)))
    (goto-char (point-max))
    ;;
    (while (re-search-backward cc-imenu-objc-generic-expression nil t)
      (when (not (c-literal-limits))
	(setq langnum (if (match-beginning OBJC)
			  OBJC
			(cond
			 ((match-beginning Cproto) Cproto)
			 ((match-beginning Cgeneralfunc) Cgeneralfunc)
			 ((match-beginning Cnoreturn) Cnoreturn))))
	(setq str (funcall func (match-beginning langnum) (match-end langnum)))
	;;
	(cond
	 ;;
	 ;; C
	 ;;
	 ((not (eq langnum OBJC))
	  (setq clist (cons (cons str (match-beginning langnum)) clist)))
	 ;;
	 ;; ObjC
	 ;;
	 ;; An instance Method
	 ((eq (aref str 0) ?-)
	  (setq str (concat "-" (cc-imenu-objc-method-to-selector str)))
	  (setq methodlist (cons (cons str
				       (match-beginning langnum))
				 methodlist)))
	 ;; A factory Method
	 ((eq (aref str 0) ?+)
	  (setq str (concat "+" (cc-imenu-objc-method-to-selector str)))
	  (setq methodlist (cons (cons str
				       (match-beginning langnum))
				 methodlist)))
	 ;; Interface or implementation or protocol
	 ((eq (aref str 0) ?@)
	  (setq classcount (1+ classcount))
	  (cond
	   ((and (> (length str) implen)
		 (string= (substring  str 0 implen) "@implementation"))
	    (setq str (substring str implen)
		  str2 "@implementation"))
	   ((string= (substring  str 0 intflen) "@interface")
	    (setq str (substring str intflen)
		  str2 "@interface"))
	   ((string= (substring  str 0 prtlen) "@protocol")
	    (setq str (substring str prtlen)
		  str2 "@protocol")))
	  (setq str (cc-imenu-objc-remove-white-space str))
	  (setq methodlist (cons (cons str2
				       (match-beginning langnum))
				 methodlist))
	  (setq toplist (cons (cons str methodlist) toplist)
		methodlist nil)))))

    ;; In this buffer, there is only one or zero @{interface|implementation|protocol}.
    (if (< classcount 2)
	(let ((classname (car (car toplist)))
	      (p (cdr (car (cdr (car toplist)))))
	      last)
	  (setq toplist (cons (cons classname p) (cdr (cdr (car toplist)))))
	  ;; Add C lang token
	  (if clist
	      (progn
		(setq last toplist)
		(while (cdr last)
		  (setq last (cdr last)))
		(setcdr last clist))))
      ;; Add C lang tokens as a sub menu
      (if clist
	  (setq toplist (cons (cons "C" clist) toplist))))
    ;;
    toplist
    ))

;(defvar cc-imenu-pike-generic-expression
;  ())
; FIXME: Please contribute one!

(defun cc-imenu-init (mode-generic-expression
		      &optional mode-create-index-function)
  (setq imenu-generic-expression mode-generic-expression
	imenu-case-fold-search nil)
  (when mode-create-index-function
    (setq imenu-create-index-function mode-create-index-function)))

\f
(cc-provide 'cc-menus)

;; Local Variables:
;; indent-tabs-mode: t
;; tab-width: 8
;; End:
;;; cc-menus.el ends here

debug log:

solving 0ff6efb7d3 ...
found 0ff6efb7d3 in https://git.savannah.gnu.org/cgit/emacs.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).