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20f5d145 RS |
1 | ;;; cpp.el --- Highlight or hide text according to cpp conditionals. |
2 | ||
2e922f0b | 3 | ;; Copyright (C) 1994, 1995 Free Software Foundation |
20f5d145 | 4 | |
d6d92017 | 5 | ;; Author: Per Abrahamsen <abraham@dina.kvl.dk> |
20f5d145 RS |
6 | ;; Keywords: c, faces, tools |
7 | ||
7930d722 | 8 | ;; This file is part of GNU Emacs. |
20f5d145 | 9 | |
7930d722 | 10 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
20f5d145 RS |
11 | ;; it under the terms of the GNU General Public License as published by |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
7930d722 RS |
14 | |
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
20f5d145 RS |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
7930d722 | 19 | |
20f5d145 | 20 | ;; You should have received a copy of the GNU General Public License |
b578f267 EN |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
22 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | ;; Boston, MA 02111-1307, USA. | |
20f5d145 | 24 | |
7930d722 | 25 | ;;; Commentary: |
20f5d145 RS |
26 | |
27 | ;; Parse a text for C preprocessor conditionals, and highlight or hide | |
28 | ;; the text inside the conditionals as you wish. | |
29 | ||
fe441eb7 | 30 | ;; This package is inspired by Jim Coplien's delta editor for SCCS. |
20f5d145 RS |
31 | |
32 | ;;; Todo: | |
33 | ||
34 | ;; Should parse "#if" and "#elif" expressions and merge the faces | |
35 | ;; somehow. | |
36 | ||
37 | ;; Somehow it is sometimes possible to make changes near a read only | |
38 | ;; area which you can't undo. Their are other strange effects in that | |
39 | ;; area. | |
40 | ||
41 | ;; The Edit buffer should -- optionally -- appear in its own frame. | |
42 | ||
43 | ;; Conditionals seem to be rear-sticky. They shouldn't be. | |
44 | ||
45 | ;; Restore window configurations when exiting CPP Edit buffer. | |
46 | ||
47 | ;;; Code: | |
48 | ||
49 | ;;; Customization: | |
487e6fcb RS |
50 | (defgroup cpp nil |
51 | "Highlight or hide text according to cpp conditionals." | |
2279eb90 | 52 | :group 'c |
487e6fcb RS |
53 | :prefix "cpp-") |
54 | ||
55 | (defcustom cpp-config-file (convert-standard-filename ".cpp.el") | |
56 | "*File name to save cpp configuration." | |
57 | :type 'file | |
58 | :group 'cpp) | |
59 | ||
60 | (defcustom cpp-known-face 'invisible | |
61 | "*Face used for known cpp symbols." | |
62 | :type 'face | |
63 | :group 'cpp) | |
64 | ||
65 | (defcustom cpp-unknown-face 'highlight | |
66 | "*Face used for unknown cpp symbols." | |
67 | :type 'face | |
68 | :group 'cpp) | |
69 | ||
70 | (defcustom cpp-face-type 'light | |
20f5d145 RS |
71 | "*Indicate what background face type you prefer. |
72 | Can be either light or dark for color screens, mono for monochrome | |
25ef2b06 EZ |
73 | screens, and none if you don't use a window system and don't have |
74 | a color-capable display." | |
487e6fcb RS |
75 | :options '(light dark mono nil) |
76 | :type 'symbol | |
77 | :group 'cpp) | |
78 | ||
79 | (defcustom cpp-known-writable t | |
80 | "*Non-nil means you are allowed to modify the known conditionals." | |
81 | :type 'boolean | |
82 | :group 'cpp) | |
83 | ||
84 | (defcustom cpp-unknown-writable t | |
85 | "*Non-nil means you are allowed to modify the unknown conditionals." | |
86 | :type 'boolean | |
87 | :group 'cpp) | |
88 | ||
89 | (defcustom cpp-edit-list nil | |
2e922f0b RS |
90 | "Alist of cpp macros and information about how they should be displayed. |
91 | Each entry is a list with the following elements: | |
92 | 0. The name of the macro (a string). | |
93 | 1. Face used for text that is `ifdef' the macro. | |
94 | 2. Face used for text that is `ifndef' the macro. | |
487e6fcb RS |
95 | 3. `t', `nil', or `both' depending on what text may be edited." |
96 | :type '(repeat (list string face face | |
97 | (choice (const t) | |
98 | (const nil) | |
99 | (const both)))) | |
100 | :group 'cpp) | |
2e922f0b RS |
101 | |
102 | (defvar cpp-overlay-list nil) | |
103 | ;; List of cpp overlays active in the current buffer. | |
104 | (make-variable-buffer-local 'cpp-overlay-list) | |
105 | ||
106 | (defvar cpp-callback-data) | |
107 | (defvar cpp-state-stack) | |
108 | ||
109 | (defconst cpp-face-type-list | |
110 | '(("light color background" . light) | |
111 | ("dark color background" . dark) | |
112 | ("monochrome" . mono) | |
113 | ("tty" . none)) | |
114 | "Alist of strings and names of the defined face collections.") | |
115 | ||
116 | (defconst cpp-writable-list | |
117 | ;; Names used for the writable property. | |
118 | '(("writable" . t) | |
119 | ("read-only" . nil))) | |
120 | ||
121 | (defvar cpp-button-event nil) | |
122 | ;; This will be t in the callback for `cpp-make-button'. | |
123 | ||
124 | (defvar cpp-edit-buffer nil) | |
125 | ;; Real buffer whose cpp display information we are editing. | |
126 | (make-variable-buffer-local 'cpp-edit-buffer) | |
127 | ||
128 | (defconst cpp-branch-list | |
129 | ;; Alist of branches. | |
130 | '(("false" . nil) | |
131 | ("true" . t) | |
132 | ("both" . both))) | |
133 | ||
487e6fcb | 134 | (defcustom cpp-face-default-list nil |
212a75c4 RS |
135 | "Alist of faces you can choose from for cpp conditionals. |
136 | Each element has the form (STRING . FACE), where STRING | |
137 | serves as a name (for `cpp-highlight-buffer' only) | |
138 | and FACE is either a face (a symbol) | |
139 | or a cons cell (background-color . COLOR)." | |
140 | :type '(repeat (cons string (choice face (cons (const background-color) string)))) | |
487e6fcb | 141 | :group 'cpp) |
2e922f0b | 142 | |
487e6fcb | 143 | (defcustom cpp-face-light-name-list |
2e922f0b RS |
144 | '("light gray" "light blue" "light cyan" "light yellow" "light pink" |
145 | "pale green" "beige" "orange" "magenta" "violet" "medium purple" | |
146 | "turquoise") | |
487e6fcb RS |
147 | "Background colours useful with dark foreground colors." |
148 | :type '(repeat string) | |
149 | :group 'cpp) | |
2e922f0b | 150 | |
487e6fcb | 151 | (defcustom cpp-face-dark-name-list |
2e922f0b RS |
152 | '("dim gray" "blue" "cyan" "yellow" "red" |
153 | "dark green" "brown" "dark orange" "dark khaki" "dark violet" "purple" | |
154 | "dark turquoise") | |
487e6fcb RS |
155 | "Background colours useful with light foreground colors." |
156 | :type '(repeat string) | |
157 | :group 'cpp) | |
158 | ||
159 | (defcustom cpp-face-light-list nil | |
160 | "Alist of names and faces to be used for light backgrounds." | |
0b44343b AS |
161 | :type '(repeat (cons string (choice face |
162 | (cons (const background-color) string)))) | |
487e6fcb RS |
163 | :group 'cpp) |
164 | ||
165 | (defcustom cpp-face-dark-list nil | |
166 | "Alist of names and faces to be used for dark backgrounds." | |
0b44343b AS |
167 | :type '(repeat (cons string (choice face |
168 | (cons (const background-color) string)))) | |
487e6fcb RS |
169 | :group 'cpp) |
170 | ||
171 | (defcustom cpp-face-mono-list | |
172 | '(("bold" . bold) | |
173 | ("bold-italic" . bold-italic) | |
174 | ("italic" . italic) | |
175 | ("underline" . underline)) | |
176 | "Alist of names and faces to be used for monochrome screens." | |
177 | :type '(repeat (cons string face)) | |
178 | :group 'cpp) | |
179 | ||
180 | (defcustom cpp-face-none-list | |
2e922f0b RS |
181 | '(("default" . default) |
182 | ("invisible" . invisible)) | |
487e6fcb RS |
183 | "Alist of names and faces available even if you don't use a window system." |
184 | :type '(repeat (cons string face)) | |
185 | :group 'cpp) | |
2e922f0b RS |
186 | |
187 | (defvar cpp-face-all-list | |
188 | (append cpp-face-light-list | |
189 | cpp-face-dark-list | |
190 | cpp-face-mono-list | |
191 | cpp-face-none-list) | |
44fb78c0 | 192 | "All faces used for highlighting text inside cpp conditionals.") |
2e922f0b | 193 | |
20f5d145 RS |
194 | ;;; Parse Buffer: |
195 | ||
196 | (defvar cpp-parse-symbols nil | |
197 | "List of cpp macros used in the local buffer.") | |
198 | (make-variable-buffer-local 'cpp-parse-symbols) | |
199 | ||
200 | (defconst cpp-parse-regexp | |
201 | ;; Regexp matching all tokens needed to find conditionals. | |
202 | (concat | |
203 | "'\\|\"\\|/\\*\\|//\\|" | |
204 | "\\(^[ \t]*#[ \t]*\\(ifdef\\|ifndef\\|if\\|" | |
205 | "elif\\|else\\|endif\\)\\b\\)")) | |
206 | ||
207 | ;;;###autoload | |
daf4206b RS |
208 | (defun cpp-highlight-buffer (arg) |
209 | "Highlight C code according to preprocessor conditionals. | |
210 | This command pops up a buffer which you should edit to specify | |
211 | what kind of highlighting to use, and the criteria for highlighting. | |
f3a69d8f | 212 | A prefix arg suppresses display of that buffer." |
20f5d145 | 213 | (interactive "P") |
212a75c4 RS |
214 | (unless (or (eq t buffer-invisibility-spec) |
215 | (memq 'cpp buffer-invisibility-spec)) | |
73932557 | 216 | (add-to-invisibility-spec 'cpp)) |
20f5d145 RS |
217 | (setq cpp-parse-symbols nil) |
218 | (cpp-parse-reset) | |
219 | (if (null cpp-edit-list) | |
220 | (cpp-edit-load)) | |
2e922f0b | 221 | (let (cpp-state-stack) |
20f5d145 RS |
222 | (save-excursion |
223 | (goto-char (point-min)) | |
224 | (cpp-progress-message "Parsing...") | |
225 | (while (re-search-forward cpp-parse-regexp nil t) | |
226 | (cpp-progress-message "Parsing...%d%%" | |
227 | (/ (* 100 (- (point) (point-min))) (buffer-size))) | |
228 | (let ((match (buffer-substring (match-beginning 0) (match-end 0)))) | |
229 | (cond ((or (string-equal match "'") | |
230 | (string-equal match "\"")) | |
231 | (goto-char (match-beginning 0)) | |
232 | (condition-case nil | |
233 | (forward-sexp) | |
234 | (error (cpp-parse-error | |
235 | "Unterminated string or character")))) | |
236 | ((string-equal match "/*") | |
237 | (or (search-forward "*/" nil t) | |
238 | (error "Unterminated comment"))) | |
239 | ((string-equal match "//") | |
240 | (skip-chars-forward "^\n\r")) | |
241 | (t | |
242 | (end-of-line 1) | |
243 | (let ((from (match-beginning 1)) | |
244 | (to (1+ (point))) | |
245 | (type (buffer-substring (match-beginning 2) | |
246 | (match-end 2))) | |
247 | (expr (buffer-substring (match-end 1) (point)))) | |
248 | (cond ((string-equal type "ifdef") | |
249 | (cpp-parse-open t expr from to)) | |
250 | ((string-equal type "ifndef") | |
251 | (cpp-parse-open nil expr from to)) | |
252 | ((string-equal type "if") | |
253 | (cpp-parse-open t expr from to)) | |
254 | ((string-equal type "elif") | |
255 | (let (cpp-known-face cpp-unknown-face) | |
256 | (cpp-parse-close from to)) | |
257 | (cpp-parse-open t expr from to)) | |
258 | ((string-equal type "else") | |
2e922f0b RS |
259 | (or cpp-state-stack |
260 | (cpp-parse-error "Top level #else")) | |
261 | (let ((entry (list (not (nth 0 (car cpp-state-stack))) | |
262 | (nth 1 (car cpp-state-stack)) | |
20f5d145 RS |
263 | from to))) |
264 | (cpp-parse-close from to) | |
2e922f0b | 265 | (setq cpp-state-stack (cons entry cpp-state-stack)))) |
20f5d145 RS |
266 | ((string-equal type "endif") |
267 | (cpp-parse-close from to)) | |
268 | (t | |
269 | (cpp-parse-error "Parser error")))))))) | |
270 | (message "Parsing...done")) | |
2e922f0b | 271 | (if cpp-state-stack |
20f5d145 | 272 | (save-excursion |
2e922f0b | 273 | (goto-char (nth 3 (car cpp-state-stack))) |
20f5d145 RS |
274 | (cpp-parse-error "Unclosed conditional")))) |
275 | (or arg | |
276 | (null cpp-parse-symbols) | |
277 | (cpp-parse-edit))) | |
278 | ||
279 | (defun cpp-parse-open (branch expr begin end) | |
2e922f0b | 280 | "Push information about conditional-beginning onto `cpp-state-stack'." |
f3a69d8f | 281 | ;; Discard comments within this line. |
20f5d145 RS |
282 | (while (string-match "\\b[ \t]*/\\*.*\\*/[ \t]*\\b" expr) |
283 | (setq expr (concat (substring expr 0 (match-beginning 0)) | |
284 | (substring expr (match-end 0))))) | |
f3a69d8f RS |
285 | ;; If a comment starts on this line and continues past, discard it. |
286 | (if (string-match "\\b[ \t]*/\\*" expr) | |
287 | (setq expr (substring expr 0 (match-beginning 0)))) | |
288 | ;; Delete any C++ comment from the line. | |
20f5d145 RS |
289 | (if (string-match "\\b[ \t]*\\(//.*\\)?$" expr) |
290 | (setq expr (substring expr 0 (match-beginning 0)))) | |
291 | (while (string-match "[ \t]+" expr) | |
292 | (setq expr (concat (substring expr 0 (match-beginning 0)) | |
293 | (substring expr (match-end 0))))) | |
2e922f0b | 294 | (setq cpp-state-stack (cons (list branch expr begin end) cpp-state-stack)) |
20f5d145 RS |
295 | (or (member expr cpp-parse-symbols) |
296 | (setq cpp-parse-symbols | |
297 | (cons expr cpp-parse-symbols))) | |
298 | (if (assoc expr cpp-edit-list) | |
299 | (cpp-make-known-overlay begin end) | |
300 | (cpp-make-unknown-overlay begin end))) | |
301 | ||
302 | (defun cpp-parse-close (from to) | |
2e922f0b RS |
303 | ;; Pop top of cpp-state-stack and create overlay. |
304 | (let ((entry (assoc (nth 1 (car cpp-state-stack)) cpp-edit-list)) | |
305 | (branch (nth 0 (car cpp-state-stack))) | |
306 | (begin (nth 2 (car cpp-state-stack))) | |
307 | (end (nth 3 (car cpp-state-stack)))) | |
308 | (setq cpp-state-stack (cdr cpp-state-stack)) | |
20f5d145 RS |
309 | (if entry |
310 | (let ((face (nth (if branch 1 2) entry)) | |
311 | (read-only (eq (not branch) (nth 3 entry))) | |
2e922f0b | 312 | (priority (length cpp-state-stack)) |
20f5d145 RS |
313 | (overlay (make-overlay end from))) |
314 | (cpp-make-known-overlay from to) | |
315 | (setq cpp-overlay-list (cons overlay cpp-overlay-list)) | |
316 | (if priority (overlay-put overlay 'priority priority)) | |
317 | (cond ((eq face 'invisible) | |
318 | (cpp-make-overlay-hidden overlay)) | |
319 | ((eq face 'default)) | |
320 | (t | |
321 | (overlay-put overlay 'face face))) | |
322 | (if read-only | |
323 | (cpp-make-overlay-read-only overlay) | |
324 | (cpp-make-overlay-sticky overlay))) | |
325 | (cpp-make-unknown-overlay from to)))) | |
326 | ||
327 | (defun cpp-parse-error (error) | |
328 | ;; Error message issued by the cpp parser. | |
8995e09e | 329 | (error "%s at line %d" error (count-lines (point-min) (point)))) |
20f5d145 RS |
330 | |
331 | (defun cpp-parse-reset () | |
332 | "Reset display of cpp conditionals to normal." | |
333 | (interactive) | |
334 | (while cpp-overlay-list | |
335 | (delete-overlay (car cpp-overlay-list)) | |
336 | (setq cpp-overlay-list (cdr cpp-overlay-list)))) | |
337 | ||
338 | ;;;###autoload | |
339 | (defun cpp-parse-edit () | |
340 | "Edit display information for cpp conditionals." | |
341 | (interactive) | |
342 | (or cpp-parse-symbols | |
f3a69d8f | 343 | (cpp-highlight-buffer t)) |
20f5d145 RS |
344 | (let ((buffer (current-buffer))) |
345 | (pop-to-buffer "*CPP Edit*") | |
346 | (cpp-edit-mode) | |
347 | (setq cpp-edit-buffer buffer) | |
348 | (cpp-edit-reset))) | |
349 | ||
350 | ;;; Overlays: | |
351 | ||
20f5d145 RS |
352 | (defun cpp-make-known-overlay (start end) |
353 | ;; Create an overlay for a known cpp command from START to END. | |
354 | (let ((overlay (make-overlay start end))) | |
355 | (if (eq cpp-known-face 'invisible) | |
356 | (cpp-make-overlay-hidden overlay) | |
357 | (or (eq cpp-known-face 'default) | |
358 | (overlay-put overlay 'face cpp-known-face)) | |
359 | (if cpp-known-writable | |
360 | () | |
361 | (overlay-put overlay 'modification-hooks '(cpp-signal-read-only)) | |
362 | (overlay-put overlay 'insert-in-front-hooks '(cpp-signal-read-only)))) | |
363 | (setq cpp-overlay-list (cons overlay cpp-overlay-list)))) | |
364 | ||
365 | (defun cpp-make-unknown-overlay (start end) | |
366 | ;; Create an overlay for an unknown cpp command from START to END. | |
367 | (let ((overlay (make-overlay start end))) | |
368 | (cond ((eq cpp-unknown-face 'invisible) | |
369 | (cpp-make-overlay-hidden overlay)) | |
370 | ((eq cpp-unknown-face 'default)) | |
371 | (t | |
372 | (overlay-put overlay 'face cpp-unknown-face))) | |
373 | (if cpp-unknown-writable | |
374 | () | |
375 | (overlay-put overlay 'modification-hooks '(cpp-signal-read-only)) | |
376 | (overlay-put overlay 'insert-in-front-hooks '(cpp-signal-read-only))) | |
377 | (setq cpp-overlay-list (cons overlay cpp-overlay-list)))) | |
378 | ||
379 | (defun cpp-make-overlay-hidden (overlay) | |
380 | ;; Make overlay hidden and intangible. | |
73932557 | 381 | (overlay-put overlay 'invisible 'cpp) |
20f5d145 RS |
382 | (overlay-put overlay 'intangible t) |
383 | ;; Unfortunately `intangible' is not implemented for overlays yet, | |
384 | ;; so we make is read-only instead. | |
dfc4f59b RS |
385 | (overlay-put overlay 'modification-hooks '(cpp-signal-read-only)) |
386 | (overlay-put overlay 'insert-in-front-hooks '(cpp-signal-read-only))) | |
20f5d145 RS |
387 | |
388 | (defun cpp-make-overlay-read-only (overlay) | |
389 | ;; Make overlay read only. | |
390 | (overlay-put overlay 'modification-hooks '(cpp-signal-read-only)) | |
391 | (overlay-put overlay 'insert-in-front-hooks '(cpp-signal-read-only)) | |
392 | (overlay-put overlay 'insert-behind-hooks '(cpp-signal-read-only))) | |
393 | ||
394 | (defun cpp-make-overlay-sticky (overlay) | |
395 | ;; Make OVERLAY grow when you insert text at either end. | |
396 | (overlay-put overlay 'insert-in-front-hooks '(cpp-grow-overlay)) | |
397 | (overlay-put overlay 'insert-behind-hooks '(cpp-grow-overlay))) | |
398 | ||
dfc4f59b | 399 | (defun cpp-signal-read-only (overlay after start end &optional len) |
20f5d145 RS |
400 | ;; Only allow deleting the whole overlay. |
401 | ;; Trying to change a read-only overlay. | |
dfc4f59b RS |
402 | (if (and (not after) |
403 | (or (< (overlay-start overlay) start) | |
404 | (> (overlay-end overlay) end))) | |
20f5d145 RS |
405 | (error "This text is read only"))) |
406 | ||
dfc4f59b | 407 | (defun cpp-grow-overlay (overlay after start end &optional len) |
20f5d145 | 408 | ;; Make OVERLAY grow to contain range START to END. |
dfc4f59b RS |
409 | (if after |
410 | (move-overlay overlay | |
411 | (min start (overlay-start overlay)) | |
412 | (max end (overlay-end overlay))))) | |
20f5d145 RS |
413 | |
414 | ;;; Edit Buffer: | |
415 | ||
20f5d145 RS |
416 | (defvar cpp-edit-map nil) |
417 | ;; Keymap for `cpp-edit-mode'. | |
418 | ||
419 | (if cpp-edit-map | |
420 | () | |
421 | (setq cpp-edit-map (make-keymap)) | |
422 | (suppress-keymap cpp-edit-map) | |
423 | (define-key cpp-edit-map [ down-mouse-2 ] 'cpp-push-button) | |
424 | (define-key cpp-edit-map [ mouse-2 ] 'ignore) | |
425 | (define-key cpp-edit-map " " 'scroll-up) | |
426 | (define-key cpp-edit-map "\C-?" 'scroll-down) | |
427 | (define-key cpp-edit-map [ delete ] 'scroll-down) | |
428 | (define-key cpp-edit-map "\C-c\C-c" 'cpp-edit-apply) | |
429 | (define-key cpp-edit-map "a" 'cpp-edit-apply) | |
430 | (define-key cpp-edit-map "A" 'cpp-edit-apply) | |
431 | (define-key cpp-edit-map "r" 'cpp-edit-reset) | |
432 | (define-key cpp-edit-map "R" 'cpp-edit-reset) | |
433 | (define-key cpp-edit-map "s" 'cpp-edit-save) | |
434 | (define-key cpp-edit-map "S" 'cpp-edit-save) | |
435 | (define-key cpp-edit-map "l" 'cpp-edit-load) | |
436 | (define-key cpp-edit-map "L" 'cpp-edit-load) | |
437 | (define-key cpp-edit-map "h" 'cpp-edit-home) | |
438 | (define-key cpp-edit-map "H" 'cpp-edit-home) | |
439 | (define-key cpp-edit-map "b" 'cpp-edit-background) | |
440 | (define-key cpp-edit-map "B" 'cpp-edit-background) | |
441 | (define-key cpp-edit-map "k" 'cpp-edit-known) | |
442 | (define-key cpp-edit-map "K" 'cpp-edit-known) | |
443 | (define-key cpp-edit-map "u" 'cpp-edit-unknown) | |
444 | (define-key cpp-edit-map "u" 'cpp-edit-unknown) | |
445 | (define-key cpp-edit-map "t" 'cpp-edit-true) | |
446 | (define-key cpp-edit-map "T" 'cpp-edit-true) | |
447 | (define-key cpp-edit-map "f" 'cpp-edit-false) | |
448 | (define-key cpp-edit-map "F" 'cpp-edit-false) | |
449 | (define-key cpp-edit-map "w" 'cpp-edit-write) | |
450 | (define-key cpp-edit-map "W" 'cpp-edit-write) | |
451 | (define-key cpp-edit-map "X" 'cpp-edit-toggle-known) | |
452 | (define-key cpp-edit-map "x" 'cpp-edit-toggle-known) | |
453 | (define-key cpp-edit-map "Y" 'cpp-edit-toggle-unknown) | |
454 | (define-key cpp-edit-map "y" 'cpp-edit-toggle-unknown) | |
455 | (define-key cpp-edit-map "q" 'bury-buffer) | |
456 | (define-key cpp-edit-map "Q" 'bury-buffer)) | |
457 | ||
20f5d145 RS |
458 | (defvar cpp-edit-symbols nil) |
459 | ;; Symbols defined in the edit buffer. | |
460 | (make-variable-buffer-local 'cpp-edit-symbols) | |
461 | ||
462 | (defun cpp-edit-mode () | |
daf4206b | 463 | "Major mode for editing the criteria for highlighting cpp conditionals. |
20f5d145 RS |
464 | Click on objects to change them. |
465 | You can also use the keyboard accelerators indicated like this: [K]ey." | |
466 | (kill-all-local-variables) | |
467 | (buffer-disable-undo) | |
468 | (auto-save-mode -1) | |
469 | (setq buffer-read-only t) | |
470 | (setq major-mode 'cpp-edit-mode) | |
471 | (setq mode-name "CPP Edit") | |
472 | (use-local-map cpp-edit-map)) | |
473 | ||
474 | (defun cpp-edit-apply () | |
475 | "Apply edited display information to original buffer." | |
476 | (interactive) | |
477 | (cpp-edit-home) | |
f3a69d8f | 478 | (cpp-highlight-buffer t)) |
20f5d145 RS |
479 | |
480 | (defun cpp-edit-reset () | |
481 | "Reset display information from original buffer." | |
482 | (interactive) | |
483 | (let ((buffer (current-buffer)) | |
484 | (buffer-read-only nil) | |
485 | (start (window-start)) | |
486 | (pos (point)) | |
487 | symbols) | |
488 | (set-buffer cpp-edit-buffer) | |
489 | (setq symbols cpp-parse-symbols) | |
490 | (set-buffer buffer) | |
491 | (setq cpp-edit-symbols symbols) | |
492 | (erase-buffer) | |
493 | (insert "CPP Display Information for `") | |
494 | (cpp-make-button (buffer-name cpp-edit-buffer) 'cpp-edit-home) | |
3478257b | 495 | (insert "'\n\nClick mouse-2 on item you want to change or use\n" |
f3a69d8f RS |
496 | "or switch to this buffer and type the keyboard equivalents.\n" |
497 | "Keyboard equivalents are indicated with brackets like [T]his.\n\n") | |
498 | (cpp-make-button "[H]ome (display the C file)" 'cpp-edit-home) | |
499 | (insert " ") | |
500 | (cpp-make-button "[A]pply new settings" 'cpp-edit-apply) | |
501 | (insert "\n") | |
502 | (cpp-make-button "[S]ave settings" 'cpp-edit-save) | |
503 | (insert " ") | |
504 | (cpp-make-button "[L]oad settings" 'cpp-edit-load) | |
505 | (insert "\n\n") | |
506 | ||
20f5d145 RS |
507 | (insert "[B]ackground: ") |
508 | (cpp-make-button (car (rassq cpp-face-type cpp-face-type-list)) | |
509 | 'cpp-edit-background) | |
510 | (insert "\n[K]nown conditionals: ") | |
511 | (cpp-make-button (cpp-face-name cpp-known-face) | |
512 | 'cpp-edit-known nil t) | |
513 | (insert " [X] ") | |
514 | (cpp-make-button (car (rassq cpp-known-writable cpp-writable-list)) | |
515 | 'cpp-edit-toggle-known) | |
516 | (insert "\n[U]nknown conditionals: ") | |
517 | (cpp-make-button (cpp-face-name cpp-unknown-face) | |
518 | 'cpp-edit-unknown nil t) | |
519 | (insert " [Y] ") | |
520 | (cpp-make-button (car (rassq cpp-unknown-writable cpp-writable-list)) | |
521 | 'cpp-edit-toggle-unknown) | |
522 | (insert (format "\n\n\n%39s: %14s %14s %7s\n\n" "Expression" | |
523 | "[T]rue Face" "[F]alse Face" "[W]rite")) | |
524 | (while symbols | |
525 | (let* ((symbol (car symbols)) | |
526 | (entry (assoc symbol cpp-edit-list)) | |
527 | (true (nth 1 entry)) | |
528 | (false (nth 2 entry)) | |
529 | (write (if entry (nth 3 entry) 'both))) | |
530 | (setq symbols (cdr symbols)) | |
531 | ||
532 | (if (and entry ; Make default entries unknown. | |
533 | (or (null true) (eq true 'default)) | |
534 | (or (null false) (eq false 'default)) | |
535 | (eq write 'both)) | |
536 | (setq cpp-edit-list (delq entry cpp-edit-list) | |
537 | entry nil)) | |
538 | ||
dfc4f59b | 539 | (if (> (length symbol) 39) |
20f5d145 RS |
540 | (insert (substring symbol 0 39) ": ") |
541 | (insert (format "%39s: " symbol))) | |
542 | ||
543 | (cpp-make-button (cpp-face-name true) | |
544 | 'cpp-edit-true symbol t 14) | |
545 | (insert " ") | |
546 | (cpp-make-button (cpp-face-name false) | |
547 | 'cpp-edit-false symbol t 14) | |
548 | (insert " ") | |
549 | (cpp-make-button (car (rassq write cpp-branch-list)) | |
550 | 'cpp-edit-write symbol nil 6) | |
551 | (insert "\n"))) | |
552 | (insert "\n\n") | |
553 | (set-window-start nil start) | |
554 | (goto-char pos))) | |
555 | ||
556 | (defun cpp-edit-load () | |
557 | "Load cpp configuration." | |
558 | (interactive) | |
e9286904 RS |
559 | (cond ((null init-file-user) |
560 | ;; If -q was specified, don't load any init files. | |
561 | nil) | |
562 | ((file-readable-p cpp-config-file) | |
21590f63 RS |
563 | (load-file cpp-config-file)) |
564 | ((file-readable-p (concat "~/" cpp-config-file)) | |
565 | (load-file cpp-config-file))) | |
fe441eb7 RS |
566 | (if (eq major-mode 'cpp-edit-mode) |
567 | (cpp-edit-reset))) | |
20f5d145 RS |
568 | |
569 | (defun cpp-edit-save () | |
e9286904 | 570 | "Save the current cpp configuration in a file." |
20f5d145 RS |
571 | (interactive) |
572 | (require 'pp) | |
573 | (save-excursion | |
574 | (set-buffer cpp-edit-buffer) | |
21590f63 | 575 | (let ((buffer (find-file-noselect cpp-config-file))) |
20f5d145 RS |
576 | (set-buffer buffer) |
577 | (erase-buffer) | |
578 | (pp (list 'setq 'cpp-known-face | |
579 | (list 'quote cpp-known-face)) buffer) | |
580 | (pp (list 'setq 'cpp-unknown-face | |
581 | (list 'quote cpp-unknown-face)) buffer) | |
582 | (pp (list 'setq 'cpp-face-type | |
583 | (list 'quote cpp-face-type)) buffer) | |
584 | (pp (list 'setq 'cpp-known-writable | |
585 | (list 'quote cpp-known-writable)) buffer) | |
586 | (pp (list 'setq 'cpp-unknown-writable | |
587 | (list 'quote cpp-unknown-writable)) buffer) | |
588 | (pp (list 'setq 'cpp-edit-list | |
589 | (list 'quote cpp-edit-list)) buffer) | |
21590f63 | 590 | (write-file cpp-config-file)))) |
20f5d145 RS |
591 | |
592 | (defun cpp-edit-home () | |
593 | "Switch back to original buffer." | |
594 | (interactive) | |
595 | (if cpp-button-event | |
596 | (read-event)) | |
597 | (pop-to-buffer cpp-edit-buffer)) | |
598 | ||
599 | (defun cpp-edit-background () | |
600 | "Change default face collection." | |
601 | (interactive) | |
602 | (call-interactively 'cpp-choose-default-face) | |
603 | (cpp-edit-reset)) | |
604 | ||
605 | (defun cpp-edit-known () | |
606 | "Select default for known conditionals." | |
607 | (interactive) | |
608 | (setq cpp-known-face (cpp-choose-face "Known face" cpp-known-face)) | |
609 | (cpp-edit-reset)) | |
610 | ||
611 | (defun cpp-edit-unknown () | |
612 | "Select default for unknown conditionals." | |
613 | (interactive) | |
614 | (setq cpp-unknown-face (cpp-choose-face "Unknown face" cpp-unknown-face)) | |
615 | (cpp-edit-reset)) | |
616 | ||
20f5d145 RS |
617 | (defun cpp-edit-toggle-known (arg) |
618 | "Toggle writable status for known conditionals. | |
619 | With optional argument ARG, make them writable iff ARG is positive." | |
620 | (interactive "@P") | |
621 | (if (or (and (null arg) cpp-known-writable) | |
622 | (<= (prefix-numeric-value arg) 0)) | |
623 | (setq cpp-known-writable nil) | |
624 | (setq cpp-known-writable t)) | |
625 | (cpp-edit-reset)) | |
626 | ||
627 | (defun cpp-edit-toggle-unknown (arg) | |
628 | "Toggle writable status for unknown conditionals. | |
629 | With optional argument ARG, make them writable iff ARG is positive." | |
630 | (interactive "@P") | |
631 | (if (or (and (null arg) cpp-unknown-writable) | |
632 | (<= (prefix-numeric-value arg) 0)) | |
633 | (setq cpp-unknown-writable nil) | |
634 | (setq cpp-unknown-writable t)) | |
635 | (cpp-edit-reset)) | |
636 | ||
637 | (defun cpp-edit-true (symbol face) | |
638 | "Select SYMBOL's true FACE used for highlighting taken conditionals." | |
639 | (interactive | |
640 | (let ((symbol (cpp-choose-symbol))) | |
641 | (list symbol | |
642 | (cpp-choose-face "True face" | |
643 | (nth 1 (assoc symbol cpp-edit-list)))))) | |
644 | (setcar (nthcdr 1 (cpp-edit-list-entry-get-or-create symbol)) face) | |
645 | (cpp-edit-reset)) | |
646 | ||
647 | (defun cpp-edit-false (symbol face) | |
648 | "Select SYMBOL's false FACE used for highlighting untaken conditionals." | |
649 | (interactive | |
650 | (let ((symbol (cpp-choose-symbol))) | |
651 | (list symbol | |
652 | (cpp-choose-face "False face" | |
653 | (nth 2 (assoc symbol cpp-edit-list)))))) | |
654 | (setcar (nthcdr 2 (cpp-edit-list-entry-get-or-create symbol)) face) | |
655 | (cpp-edit-reset)) | |
656 | ||
657 | (defun cpp-edit-write (symbol branch) | |
658 | "Set which branches of SYMBOL should be writable to BRANCH. | |
659 | BRANCH should be either nil (false branch), t (true branch) or 'both." | |
660 | (interactive (list (cpp-choose-symbol) (cpp-choose-branch))) | |
661 | (setcar (nthcdr 3 (cpp-edit-list-entry-get-or-create symbol)) branch) | |
662 | (cpp-edit-reset)) | |
663 | ||
664 | (defun cpp-edit-list-entry-get-or-create (symbol) | |
665 | ;; Return the entry for SYMBOL in `cpp-edit-list'. | |
666 | ;; If it does not exist, create it. | |
667 | (let ((entry (assoc symbol cpp-edit-list))) | |
668 | (or entry | |
669 | (setq entry (list symbol nil nil 'both nil) | |
670 | cpp-edit-list (cons entry cpp-edit-list))) | |
671 | entry)) | |
672 | ||
673 | ;;; Prompts: | |
674 | ||
675 | (defun cpp-choose-symbol () | |
676 | ;; Choose a symbol if called from keyboard, otherwise use the one clicked on. | |
677 | (if cpp-button-event | |
2e922f0b | 678 | cpp-callback-data |
20f5d145 RS |
679 | (completing-read "Symbol: " (mapcar 'list cpp-edit-symbols) nil t))) |
680 | ||
20f5d145 RS |
681 | (defun cpp-choose-branch () |
682 | ;; Choose a branch, either nil, t, or both. | |
683 | (if cpp-button-event | |
684 | (x-popup-menu cpp-button-event | |
685 | (list "Branch" (cons "Branch" cpp-branch-list))) | |
686 | (cdr (assoc (completing-read "Branch: " cpp-branch-list nil t) | |
687 | cpp-branch-list)))) | |
688 | ||
689 | (defun cpp-choose-face (prompt default) | |
690 | ;; Choose a face from cpp-face-defalt-list. | |
691 | ;; PROMPT is what to say to the user. | |
692 | ;; DEFAULT is the default face. | |
693 | (or (if cpp-button-event | |
694 | (x-popup-menu cpp-button-event | |
695 | (list prompt (cons prompt cpp-face-default-list))) | |
696 | (let ((name (car (rassq default cpp-face-default-list)))) | |
697 | (cdr (assoc (completing-read (if name | |
698 | (concat prompt | |
699 | " (default " name "): ") | |
700 | (concat prompt ": ")) | |
701 | cpp-face-default-list nil t) | |
702 | cpp-face-all-list)))) | |
703 | default)) | |
704 | ||
20f5d145 RS |
705 | (defun cpp-choose-default-face (type) |
706 | ;; Choose default face list for screen of TYPE. | |
707 | ;; Type must be one of the types defined in `cpp-face-type-list'. | |
708 | (interactive (list (if cpp-button-event | |
709 | (x-popup-menu cpp-button-event | |
710 | (list "Screen type" | |
711 | (cons "Screen type" | |
712 | cpp-face-type-list))) | |
713 | (cdr (assoc (completing-read "Screen type: " | |
714 | cpp-face-type-list | |
715 | nil t) | |
716 | cpp-face-type-list))))) | |
717 | (cond ((null type)) | |
718 | ((eq type 'light) | |
719 | (if cpp-face-light-list | |
720 | () | |
721 | (setq cpp-face-light-list | |
722 | (mapcar 'cpp-create-bg-face cpp-face-light-name-list)) | |
723 | (setq cpp-face-all-list | |
724 | (append cpp-face-all-list cpp-face-light-list))) | |
725 | (setq cpp-face-type 'light) | |
726 | (setq cpp-face-default-list | |
727 | (append cpp-face-light-list cpp-face-none-list))) | |
728 | ((eq type 'dark) | |
729 | (if cpp-face-dark-list | |
730 | () | |
731 | (setq cpp-face-dark-list | |
732 | (mapcar 'cpp-create-bg-face cpp-face-dark-name-list)) | |
733 | (setq cpp-face-all-list | |
734 | (append cpp-face-all-list cpp-face-dark-list))) | |
735 | (setq cpp-face-type 'dark) | |
736 | (setq cpp-face-default-list | |
737 | (append cpp-face-dark-list cpp-face-none-list))) | |
738 | ((eq type 'mono) | |
739 | (setq cpp-face-type 'mono) | |
740 | (setq cpp-face-default-list | |
741 | (append cpp-face-mono-list cpp-face-none-list))) | |
742 | (t | |
743 | (setq cpp-face-type 'none) | |
744 | (setq cpp-face-default-list cpp-face-none-list)))) | |
745 | ||
746 | ;;; Buttons: | |
747 | ||
20f5d145 RS |
748 | (defun cpp-make-button (name callback &optional data face padding) |
749 | ;; Create a button at point. | |
750 | ;; NAME is the name of the button. | |
751 | ;; CALLBACK is the function to call when the button is pushed. | |
2e922f0b RS |
752 | ;; DATA will be made available to CALLBACK |
753 | ;;in the free variable cpp-callback-data. | |
20f5d145 RS |
754 | ;; FACE means that NAME is the name of a face in `cpp-face-all-list'. |
755 | ;; PADDING means NAME will be right justified at that length. | |
756 | (let ((name (format "%s" name)) | |
757 | from to) | |
758 | (cond ((null padding) | |
759 | (setq from (point)) | |
760 | (insert name)) | |
761 | ((> (length name) padding) | |
762 | (setq from (point)) | |
763 | (insert (substring name 0 padding))) | |
764 | (t | |
765 | (insert (make-string (- padding (length name)) ? )) | |
766 | (setq from (point)) | |
767 | (insert name))) | |
768 | (setq to (point)) | |
769 | (setq face | |
770 | (if face | |
771 | (let ((check (cdr (assoc name cpp-face-all-list)))) | |
772 | (if (memq check '(default invisible)) | |
773 | 'bold | |
774 | check)) | |
775 | 'bold)) | |
776 | (add-text-properties from to | |
777 | (append (list 'face face) | |
778 | '(mouse-face highlight) | |
779 | (list 'cpp-callback callback) | |
780 | (if data (list 'cpp-data data)))))) | |
781 | ||
782 | (defun cpp-push-button (event) | |
783 | ;; Pushed a CPP button. | |
784 | (interactive "@e") | |
785 | (set-buffer (window-buffer (posn-window (event-start event)))) | |
786 | (let ((pos (posn-point (event-start event)))) | |
2e922f0b | 787 | (let ((cpp-callback-data (get-text-property pos 'cpp-data)) |
20f5d145 RS |
788 | (fun (get-text-property pos 'cpp-callback)) |
789 | (cpp-button-event event)) | |
790 | (cond (fun | |
791 | (call-interactively (get-text-property pos 'cpp-callback))) | |
792 | ((lookup-key global-map [ down-mouse-2]) | |
793 | (call-interactively (lookup-key global-map [ down-mouse-2]))))))) | |
794 | ||
795 | ;;; Faces: | |
796 | ||
20f5d145 RS |
797 | (defun cpp-create-bg-face (color) |
798 | ;; Create entry for face with background COLOR. | |
212a75c4 | 799 | (cons color (cons 'background-color color))) |
20f5d145 | 800 | |
25ef2b06 EZ |
801 | (cpp-choose-default-face |
802 | (if (or window-system (display-color-p)) cpp-face-type 'none)) | |
20f5d145 RS |
803 | |
804 | (defun cpp-face-name (face) | |
805 | ;; Return the name of FACE from `cpp-face-all-list'. | |
806 | (let ((entry (rassq (if face face 'default) cpp-face-all-list))) | |
807 | (if entry | |
808 | (car entry) | |
809 | (format "<%s>" face)))) | |
810 | ||
811 | ;;; Utilities: | |
812 | ||
813 | (defvar cpp-progress-time 0) | |
814 | ;; Last time we issued a progress message. | |
815 | ||
816 | (defun cpp-progress-message (&rest args) | |
817 | ;; Report progress at most once a second. Take same ARGS as `message'. | |
818 | (let ((time (nth 1 (current-time)))) | |
819 | (if (= time cpp-progress-time) | |
820 | () | |
821 | (setq cpp-progress-time time) | |
822 | (apply 'message args)))) | |
823 | ||
824 | (provide 'cpp) | |
825 | ||
826 | ;;; cpp.el ends here |