Commit | Line | Data |
---|---|---|
d418ef42 | 1 | /* Interface code for dealing with text properties. |
0b5538bd | 2 | Copyright (C) 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003, |
4e6835db | 3 | 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
d418ef42 JA |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
d418ef42 JA |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
d418ef42 | 21 | |
18160b98 | 22 | #include <config.h> |
d418ef42 JA |
23 | #include "lisp.h" |
24 | #include "intervals.h" | |
25 | #include "buffer.h" | |
f5957179 | 26 | #include "window.h" |
59a486ab RS |
27 | |
28 | #ifndef NULL | |
29 | #define NULL (void *)0 | |
30 | #endif | |
318d2fa8 RS |
31 | |
32 | /* Test for membership, allowing for t (actually any non-cons) to mean the | |
33 | universal set. */ | |
34 | ||
35 | #define TMEM(sym, set) (CONSP (set) ? ! NILP (Fmemq (sym, set)) : ! NILP (set)) | |
d418ef42 JA |
36 | \f |
37 | ||
38 | /* NOTES: previous- and next- property change will have to skip | |
39 | zero-length intervals if they are implemented. This could be done | |
40 | inside next_interval and previous_interval. | |
41 | ||
9c79dd1b JA |
42 | set_properties needs to deal with the interval property cache. |
43 | ||
d418ef42 | 44 | It is assumed that for any interval plist, a property appears |
d4b530ad | 45 | only once on the list. Although some code i.e., remove_properties, |
d418ef42 | 46 | handles the more general case, the uniqueness of properties is |
eb8c3be9 | 47 | necessary for the system to remain consistent. This requirement |
cdf3e5a2 | 48 | is enforced by the subrs installing properties onto the intervals. */ |
d418ef42 JA |
49 | |
50 | \f | |
cdf3e5a2 | 51 | /* Types of hooks. */ |
d418ef42 JA |
52 | Lisp_Object Qmouse_left; |
53 | Lisp_Object Qmouse_entered; | |
54 | Lisp_Object Qpoint_left; | |
55 | Lisp_Object Qpoint_entered; | |
dc70cea7 RS |
56 | Lisp_Object Qcategory; |
57 | Lisp_Object Qlocal_map; | |
d418ef42 | 58 | |
cdf3e5a2 | 59 | /* Visual properties text (including strings) may have. */ |
d418ef42 | 60 | Lisp_Object Qforeground, Qbackground, Qfont, Qunderline, Qstipple; |
69bb837e | 61 | Lisp_Object Qinvisible, Qread_only, Qintangible, Qmouse_face; |
19e1c426 RS |
62 | |
63 | /* Sticky properties */ | |
64 | Lisp_Object Qfront_sticky, Qrear_nonsticky; | |
d7b4e137 JB |
65 | |
66 | /* If o1 is a cons whose cdr is a cons, return non-zero and set o2 to | |
67 | the o1's cdr. Otherwise, return zero. This is handy for | |
68 | traversing plists. */ | |
70949dac | 69 | #define PLIST_ELT_P(o1, o2) (CONSP (o1) && ((o2)=XCDR (o1), CONSP (o2))) |
d7b4e137 | 70 | |
688a5a0f | 71 | Lisp_Object Vinhibit_point_motion_hooks; |
ad1b2f20 | 72 | Lisp_Object Vdefault_text_properties; |
49d110a8 | 73 | Lisp_Object Vchar_property_alias_alist; |
abc2f676 | 74 | Lisp_Object Vtext_property_default_nonsticky; |
688a5a0f | 75 | |
318d2fa8 RS |
76 | /* verify_interval_modification saves insertion hooks here |
77 | to be run later by report_interval_modification. */ | |
78 | Lisp_Object interval_insert_behind_hooks; | |
79 | Lisp_Object interval_insert_in_front_hooks; | |
7cb66899 | 80 | |
2381d38d DN |
81 | static void text_read_only P_ ((Lisp_Object)) NO_RETURN; |
82 | ||
7cb66899 GM |
83 | |
84 | /* Signal a `text-read-only' error. This function makes it easier | |
85 | to capture that error in GDB by putting a breakpoint on it. */ | |
86 | ||
87 | static void | |
bcf97349 SM |
88 | text_read_only (propval) |
89 | Lisp_Object propval; | |
7cb66899 | 90 | { |
d0a29e1d KS |
91 | if (STRINGP (propval)) |
92 | xsignal1 (Qtext_read_only, propval); | |
93 | ||
94 | xsignal0 (Qtext_read_only); | |
7cb66899 GM |
95 | } |
96 | ||
97 | ||
d418ef42 | 98 | \f |
ac876a79 JA |
99 | /* Extract the interval at the position pointed to by BEGIN from |
100 | OBJECT, a string or buffer. Additionally, check that the positions | |
101 | pointed to by BEGIN and END are within the bounds of OBJECT, and | |
102 | reverse them if *BEGIN is greater than *END. The objects pointed | |
103 | to by BEGIN and END may be integers or markers; if the latter, they | |
104 | are coerced to integers. | |
d418ef42 | 105 | |
d4b530ad RS |
106 | When OBJECT is a string, we increment *BEGIN and *END |
107 | to make them origin-one. | |
108 | ||
d418ef42 JA |
109 | Note that buffer points don't correspond to interval indices. |
110 | For example, point-max is 1 greater than the index of the last | |
111 | character. This difference is handled in the caller, which uses | |
112 | the validated points to determine a length, and operates on that. | |
113 | Exceptions are Ftext_properties_at, Fnext_property_change, and | |
114 | Fprevious_property_change which call this function with BEGIN == END. | |
115 | Handle this case specially. | |
116 | ||
117 | If FORCE is soft (0), it's OK to return NULL_INTERVAL. Otherwise, | |
ac876a79 JA |
118 | create an interval tree for OBJECT if one doesn't exist, provided |
119 | the object actually contains text. In the current design, if there | |
d4b530ad | 120 | is no text, there can be no text properties. */ |
d418ef42 JA |
121 | |
122 | #define soft 0 | |
123 | #define hard 1 | |
124 | ||
9dd7eec6 | 125 | INTERVAL |
d418ef42 JA |
126 | validate_interval_range (object, begin, end, force) |
127 | Lisp_Object object, *begin, *end; | |
128 | int force; | |
129 | { | |
130 | register INTERVAL i; | |
d4b530ad RS |
131 | int searchpos; |
132 | ||
b7826503 PJ |
133 | CHECK_STRING_OR_BUFFER (object); |
134 | CHECK_NUMBER_COERCE_MARKER (*begin); | |
135 | CHECK_NUMBER_COERCE_MARKER (*end); | |
d418ef42 JA |
136 | |
137 | /* If we are asked for a point, but from a subr which operates | |
cdf3e5a2 | 138 | on a range, then return nothing. */ |
64a49ca7 | 139 | if (EQ (*begin, *end) && begin != end) |
d418ef42 JA |
140 | return NULL_INTERVAL; |
141 | ||
142 | if (XINT (*begin) > XINT (*end)) | |
143 | { | |
d4b530ad RS |
144 | Lisp_Object n; |
145 | n = *begin; | |
d418ef42 | 146 | *begin = *end; |
d4b530ad | 147 | *end = n; |
d418ef42 JA |
148 | } |
149 | ||
5d2fa46f | 150 | if (BUFFERP (object)) |
d418ef42 JA |
151 | { |
152 | register struct buffer *b = XBUFFER (object); | |
153 | ||
d418ef42 JA |
154 | if (!(BUF_BEGV (b) <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
155 | && XINT (*end) <= BUF_ZV (b))) | |
156 | args_out_of_range (*begin, *end); | |
866bf246 | 157 | i = BUF_INTERVALS (b); |
d418ef42 | 158 | |
cdf3e5a2 | 159 | /* If there's no text, there are no properties. */ |
d4b530ad RS |
160 | if (BUF_BEGV (b) == BUF_ZV (b)) |
161 | return NULL_INTERVAL; | |
162 | ||
163 | searchpos = XINT (*begin); | |
d418ef42 JA |
164 | } |
165 | else | |
166 | { | |
943afcc7 | 167 | int len = SCHARS (object); |
d418ef42 | 168 | |
d4b530ad | 169 | if (! (0 <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
943afcc7 | 170 | && XINT (*end) <= len)) |
d418ef42 | 171 | args_out_of_range (*begin, *end); |
ad077db0 | 172 | XSETFASTINT (*begin, XFASTINT (*begin)); |
b1e94638 | 173 | if (begin != end) |
ad077db0 | 174 | XSETFASTINT (*end, XFASTINT (*end)); |
943afcc7 | 175 | i = STRING_INTERVALS (object); |
d4b530ad | 176 | |
943afcc7 | 177 | if (len == 0) |
d4b530ad RS |
178 | return NULL_INTERVAL; |
179 | ||
180 | searchpos = XINT (*begin); | |
d418ef42 JA |
181 | } |
182 | ||
183 | if (NULL_INTERVAL_P (i)) | |
184 | return (force ? create_root_interval (object) : i); | |
81f6e55f | 185 | |
d4b530ad | 186 | return find_interval (i, searchpos); |
d418ef42 JA |
187 | } |
188 | ||
189 | /* Validate LIST as a property list. If LIST is not a list, then | |
190 | make one consisting of (LIST nil). Otherwise, verify that LIST | |
cdf3e5a2 | 191 | is even numbered and thus suitable as a plist. */ |
d418ef42 JA |
192 | |
193 | static Lisp_Object | |
194 | validate_plist (list) | |
4d780c76 | 195 | Lisp_Object list; |
d418ef42 JA |
196 | { |
197 | if (NILP (list)) | |
198 | return Qnil; | |
199 | ||
200 | if (CONSP (list)) | |
201 | { | |
202 | register int i; | |
203 | register Lisp_Object tail; | |
204 | for (i = 0, tail = list; !NILP (tail); i++) | |
b1e94638 JB |
205 | { |
206 | tail = Fcdr (tail); | |
207 | QUIT; | |
208 | } | |
d418ef42 JA |
209 | if (i & 1) |
210 | error ("Odd length text property list"); | |
211 | return list; | |
212 | } | |
213 | ||
214 | return Fcons (list, Fcons (Qnil, Qnil)); | |
215 | } | |
216 | ||
d418ef42 | 217 | /* Return nonzero if interval I has all the properties, |
cdf3e5a2 | 218 | with the same values, of list PLIST. */ |
d418ef42 JA |
219 | |
220 | static int | |
221 | interval_has_all_properties (plist, i) | |
222 | Lisp_Object plist; | |
223 | INTERVAL i; | |
224 | { | |
695f302f | 225 | register Lisp_Object tail1, tail2, sym1; |
d418ef42 JA |
226 | register int found; |
227 | ||
cdf3e5a2 | 228 | /* Go through each element of PLIST. */ |
d418ef42 JA |
229 | for (tail1 = plist; ! NILP (tail1); tail1 = Fcdr (Fcdr (tail1))) |
230 | { | |
231 | sym1 = Fcar (tail1); | |
232 | found = 0; | |
233 | ||
234 | /* Go through I's plist, looking for sym1 */ | |
235 | for (tail2 = i->plist; ! NILP (tail2); tail2 = Fcdr (Fcdr (tail2))) | |
236 | if (EQ (sym1, Fcar (tail2))) | |
237 | { | |
238 | /* Found the same property on both lists. If the | |
cdf3e5a2 | 239 | values are unequal, return zero. */ |
734c51b2 | 240 | if (! EQ (Fcar (Fcdr (tail1)), Fcar (Fcdr (tail2)))) |
d418ef42 JA |
241 | return 0; |
242 | ||
cdf3e5a2 | 243 | /* Property has same value on both lists; go to next one. */ |
d418ef42 JA |
244 | found = 1; |
245 | break; | |
246 | } | |
247 | ||
248 | if (! found) | |
249 | return 0; | |
250 | } | |
251 | ||
252 | return 1; | |
253 | } | |
254 | ||
255 | /* Return nonzero if the plist of interval I has any of the | |
cdf3e5a2 | 256 | properties of PLIST, regardless of their values. */ |
d418ef42 JA |
257 | |
258 | static INLINE int | |
259 | interval_has_some_properties (plist, i) | |
260 | Lisp_Object plist; | |
261 | INTERVAL i; | |
262 | { | |
263 | register Lisp_Object tail1, tail2, sym; | |
264 | ||
cdf3e5a2 | 265 | /* Go through each element of PLIST. */ |
d418ef42 JA |
266 | for (tail1 = plist; ! NILP (tail1); tail1 = Fcdr (Fcdr (tail1))) |
267 | { | |
268 | sym = Fcar (tail1); | |
269 | ||
270 | /* Go through i's plist, looking for tail1 */ | |
271 | for (tail2 = i->plist; ! NILP (tail2); tail2 = Fcdr (Fcdr (tail2))) | |
272 | if (EQ (sym, Fcar (tail2))) | |
273 | return 1; | |
274 | } | |
275 | ||
276 | return 0; | |
277 | } | |
11713b6d RS |
278 | |
279 | /* Return nonzero if the plist of interval I has any of the | |
280 | property names in LIST, regardless of their values. */ | |
281 | ||
282 | static INLINE int | |
283 | interval_has_some_properties_list (list, i) | |
284 | Lisp_Object list; | |
285 | INTERVAL i; | |
286 | { | |
287 | register Lisp_Object tail1, tail2, sym; | |
288 | ||
289 | /* Go through each element of LIST. */ | |
290 | for (tail1 = list; ! NILP (tail1); tail1 = XCDR (tail1)) | |
291 | { | |
292 | sym = Fcar (tail1); | |
293 | ||
294 | /* Go through i's plist, looking for tail1 */ | |
295 | for (tail2 = i->plist; ! NILP (tail2); tail2 = XCDR (XCDR (tail2))) | |
296 | if (EQ (sym, XCAR (tail2))) | |
297 | return 1; | |
298 | } | |
299 | ||
300 | return 0; | |
301 | } | |
d4b530ad | 302 | \f |
d7b4e137 JB |
303 | /* Changing the plists of individual intervals. */ |
304 | ||
305 | /* Return the value of PROP in property-list PLIST, or Qunbound if it | |
306 | has none. */ | |
64a49ca7 | 307 | static Lisp_Object |
d7b4e137 | 308 | property_value (plist, prop) |
33ca3504 | 309 | Lisp_Object plist, prop; |
d7b4e137 JB |
310 | { |
311 | Lisp_Object value; | |
312 | ||
313 | while (PLIST_ELT_P (plist, value)) | |
70949dac KR |
314 | if (EQ (XCAR (plist), prop)) |
315 | return XCAR (value); | |
d7b4e137 | 316 | else |
70949dac | 317 | plist = XCDR (value); |
d7b4e137 JB |
318 | |
319 | return Qunbound; | |
320 | } | |
321 | ||
d4b530ad RS |
322 | /* Set the properties of INTERVAL to PROPERTIES, |
323 | and record undo info for the previous values. | |
324 | OBJECT is the string or buffer that INTERVAL belongs to. */ | |
325 | ||
326 | static void | |
327 | set_properties (properties, interval, object) | |
328 | Lisp_Object properties, object; | |
329 | INTERVAL interval; | |
330 | { | |
d7b4e137 | 331 | Lisp_Object sym, value; |
d4b530ad | 332 | |
d7b4e137 | 333 | if (BUFFERP (object)) |
d4b530ad | 334 | { |
d7b4e137 JB |
335 | /* For each property in the old plist which is missing from PROPERTIES, |
336 | or has a different value in PROPERTIES, make an undo record. */ | |
337 | for (sym = interval->plist; | |
338 | PLIST_ELT_P (sym, value); | |
70949dac KR |
339 | sym = XCDR (value)) |
340 | if (! EQ (property_value (properties, XCAR (sym)), | |
341 | XCAR (value))) | |
f7a9275a | 342 | { |
f7a9275a | 343 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 344 | XCAR (sym), XCAR (value), |
f7a9275a RS |
345 | object); |
346 | } | |
d7b4e137 JB |
347 | |
348 | /* For each new property that has no value at all in the old plist, | |
349 | make an undo record binding it to nil, so it will be removed. */ | |
350 | for (sym = properties; | |
351 | PLIST_ELT_P (sym, value); | |
70949dac KR |
352 | sym = XCDR (value)) |
353 | if (EQ (property_value (interval->plist, XCAR (sym)), Qunbound)) | |
f7a9275a | 354 | { |
f7a9275a | 355 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 356 | XCAR (sym), Qnil, |
f7a9275a RS |
357 | object); |
358 | } | |
d4b530ad RS |
359 | } |
360 | ||
361 | /* Store new properties. */ | |
362 | interval->plist = Fcopy_sequence (properties); | |
363 | } | |
d418ef42 JA |
364 | |
365 | /* Add the properties of PLIST to the interval I, or set | |
366 | the value of I's property to the value of the property on PLIST | |
367 | if they are different. | |
368 | ||
d4b530ad RS |
369 | OBJECT should be the string or buffer the interval is in. |
370 | ||
d418ef42 JA |
371 | Return nonzero if this changes I (i.e., if any members of PLIST |
372 | are actually added to I's plist) */ | |
373 | ||
d4b530ad RS |
374 | static int |
375 | add_properties (plist, i, object) | |
d418ef42 JA |
376 | Lisp_Object plist; |
377 | INTERVAL i; | |
d4b530ad | 378 | Lisp_Object object; |
d418ef42 | 379 | { |
c98da214 | 380 | Lisp_Object tail1, tail2, sym1, val1; |
d418ef42 JA |
381 | register int changed = 0; |
382 | register int found; | |
c98da214 RS |
383 | struct gcpro gcpro1, gcpro2, gcpro3; |
384 | ||
385 | tail1 = plist; | |
386 | sym1 = Qnil; | |
387 | val1 = Qnil; | |
388 | /* No need to protect OBJECT, because we can GC only in the case | |
389 | where it is a buffer, and live buffers are always protected. | |
390 | I and its plist are also protected, via OBJECT. */ | |
391 | GCPRO3 (tail1, sym1, val1); | |
d418ef42 | 392 | |
cdf3e5a2 | 393 | /* Go through each element of PLIST. */ |
d418ef42 JA |
394 | for (tail1 = plist; ! NILP (tail1); tail1 = Fcdr (Fcdr (tail1))) |
395 | { | |
396 | sym1 = Fcar (tail1); | |
397 | val1 = Fcar (Fcdr (tail1)); | |
398 | found = 0; | |
399 | ||
400 | /* Go through I's plist, looking for sym1 */ | |
401 | for (tail2 = i->plist; ! NILP (tail2); tail2 = Fcdr (Fcdr (tail2))) | |
402 | if (EQ (sym1, Fcar (tail2))) | |
403 | { | |
c98da214 RS |
404 | /* No need to gcpro, because tail2 protects this |
405 | and it must be a cons cell (we get an error otherwise). */ | |
3814ccf5 | 406 | register Lisp_Object this_cdr; |
d418ef42 | 407 | |
3814ccf5 | 408 | this_cdr = Fcdr (tail2); |
cdf3e5a2 | 409 | /* Found the property. Now check its value. */ |
d418ef42 JA |
410 | found = 1; |
411 | ||
412 | /* The properties have the same value on both lists. | |
cdf3e5a2 | 413 | Continue to the next property. */ |
734c51b2 | 414 | if (EQ (val1, Fcar (this_cdr))) |
d418ef42 JA |
415 | break; |
416 | ||
d4b530ad | 417 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 418 | if (BUFFERP (object)) |
d4b530ad | 419 | { |
f7a9275a RS |
420 | record_property_change (i->position, LENGTH (i), |
421 | sym1, Fcar (this_cdr), object); | |
d4b530ad RS |
422 | } |
423 | ||
d418ef42 JA |
424 | /* I's property has a different value -- change it */ |
425 | Fsetcar (this_cdr, val1); | |
426 | changed++; | |
427 | break; | |
428 | } | |
429 | ||
430 | if (! found) | |
431 | { | |
d4b530ad | 432 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 433 | if (BUFFERP (object)) |
d4b530ad | 434 | { |
f7a9275a RS |
435 | record_property_change (i->position, LENGTH (i), |
436 | sym1, Qnil, object); | |
d4b530ad | 437 | } |
d418ef42 JA |
438 | i->plist = Fcons (sym1, Fcons (val1, i->plist)); |
439 | changed++; | |
440 | } | |
441 | } | |
442 | ||
c98da214 RS |
443 | UNGCPRO; |
444 | ||
d418ef42 JA |
445 | return changed; |
446 | } | |
447 | ||
11713b6d RS |
448 | /* For any members of PLIST, or LIST, |
449 | which are properties of I, remove them from I's plist. | |
450 | (If PLIST is non-nil, use that, otherwise use LIST.) | |
d4b530ad | 451 | OBJECT is the string or buffer containing I. */ |
d418ef42 | 452 | |
d4b530ad | 453 | static int |
11713b6d RS |
454 | remove_properties (plist, list, i, object) |
455 | Lisp_Object plist, list; | |
d418ef42 | 456 | INTERVAL i; |
d4b530ad | 457 | Lisp_Object object; |
d418ef42 | 458 | { |
3814ccf5 | 459 | register Lisp_Object tail1, tail2, sym, current_plist; |
d418ef42 JA |
460 | register int changed = 0; |
461 | ||
f25d60d6 KS |
462 | /* Nonzero means tail1 is a plist, otherwise it is a list. */ |
463 | int use_plist; | |
11713b6d | 464 | |
3814ccf5 | 465 | current_plist = i->plist; |
11713b6d RS |
466 | |
467 | if (! NILP (plist)) | |
f25d60d6 | 468 | tail1 = plist, use_plist = 1; |
11713b6d | 469 | else |
f25d60d6 | 470 | tail1 = list, use_plist = 0; |
11713b6d RS |
471 | |
472 | /* Go through each element of LIST or PLIST. */ | |
b079118d | 473 | while (CONSP (tail1)) |
d418ef42 | 474 | { |
11713b6d | 475 | sym = XCAR (tail1); |
d418ef42 | 476 | |
11713b6d | 477 | /* First, remove the symbol if it's at the head of the list */ |
b079118d | 478 | while (CONSP (current_plist) && EQ (sym, XCAR (current_plist))) |
d418ef42 | 479 | { |
5d2fa46f | 480 | if (BUFFERP (object)) |
11713b6d RS |
481 | record_property_change (i->position, LENGTH (i), |
482 | sym, XCAR (XCDR (current_plist)), | |
483 | object); | |
d4b530ad | 484 | |
11713b6d | 485 | current_plist = XCDR (XCDR (current_plist)); |
d418ef42 JA |
486 | changed++; |
487 | } | |
488 | ||
11713b6d | 489 | /* Go through I's plist, looking for SYM. */ |
d418ef42 JA |
490 | tail2 = current_plist; |
491 | while (! NILP (tail2)) | |
492 | { | |
3814ccf5 | 493 | register Lisp_Object this; |
11713b6d | 494 | this = XCDR (XCDR (tail2)); |
b079118d | 495 | if (CONSP (this) && EQ (sym, XCAR (this))) |
d418ef42 | 496 | { |
5d2fa46f | 497 | if (BUFFERP (object)) |
11713b6d RS |
498 | record_property_change (i->position, LENGTH (i), |
499 | sym, XCAR (XCDR (this)), object); | |
d4b530ad | 500 | |
11713b6d | 501 | Fsetcdr (XCDR (tail2), XCDR (XCDR (this))); |
d418ef42 JA |
502 | changed++; |
503 | } | |
504 | tail2 = this; | |
505 | } | |
11713b6d RS |
506 | |
507 | /* Advance thru TAIL1 one way or the other. */ | |
f25d60d6 KS |
508 | tail1 = XCDR (tail1); |
509 | if (use_plist && CONSP (tail1)) | |
11713b6d | 510 | tail1 = XCDR (tail1); |
d418ef42 JA |
511 | } |
512 | ||
513 | if (changed) | |
514 | i->plist = current_plist; | |
515 | return changed; | |
516 | } | |
517 | ||
d4b530ad | 518 | #if 0 |
d418ef42 | 519 | /* Remove all properties from interval I. Return non-zero |
cdf3e5a2 | 520 | if this changes the interval. */ |
d418ef42 JA |
521 | |
522 | static INLINE int | |
523 | erase_properties (i) | |
524 | INTERVAL i; | |
525 | { | |
526 | if (NILP (i->plist)) | |
527 | return 0; | |
528 | ||
529 | i->plist = Qnil; | |
530 | return 1; | |
531 | } | |
d4b530ad | 532 | #endif |
d418ef42 | 533 | \f |
81f6e55f | 534 | /* Returns the interval of POSITION in OBJECT. |
cdf3e5a2 RS |
535 | POSITION is BEG-based. */ |
536 | ||
537 | INTERVAL | |
538 | interval_of (position, object) | |
539 | int position; | |
540 | Lisp_Object object; | |
541 | { | |
542 | register INTERVAL i; | |
543 | int beg, end; | |
544 | ||
545 | if (NILP (object)) | |
546 | XSETBUFFER (object, current_buffer); | |
d0cb872a KH |
547 | else if (EQ (object, Qt)) |
548 | return NULL_INTERVAL; | |
cdf3e5a2 | 549 | |
b7826503 | 550 | CHECK_STRING_OR_BUFFER (object); |
cdf3e5a2 RS |
551 | |
552 | if (BUFFERP (object)) | |
553 | { | |
554 | register struct buffer *b = XBUFFER (object); | |
555 | ||
556 | beg = BUF_BEGV (b); | |
557 | end = BUF_ZV (b); | |
558 | i = BUF_INTERVALS (b); | |
559 | } | |
560 | else | |
561 | { | |
ad077db0 | 562 | beg = 0; |
943afcc7 KR |
563 | end = SCHARS (object); |
564 | i = STRING_INTERVALS (object); | |
cdf3e5a2 RS |
565 | } |
566 | ||
567 | if (!(beg <= position && position <= end)) | |
c7ef8e24 | 568 | args_out_of_range (make_number (position), make_number (position)); |
cdf3e5a2 RS |
569 | if (beg == end || NULL_INTERVAL_P (i)) |
570 | return NULL_INTERVAL; | |
81f6e55f | 571 | |
cdf3e5a2 RS |
572 | return find_interval (i, position); |
573 | } | |
574 | \f | |
d418ef42 JA |
575 | DEFUN ("text-properties-at", Ftext_properties_at, |
576 | Stext_properties_at, 1, 2, 0, | |
8c1a1077 | 577 | doc: /* Return the list of properties of the character at POSITION in OBJECT. |
81f6e55f FP |
578 | If the optional second argument OBJECT is a buffer (or nil, which means |
579 | the current buffer), POSITION is a buffer position (integer or marker). | |
580 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
581 | If POSITION is at the end of OBJECT, the value is nil. */) |
582 | (position, object) | |
1f5e848a | 583 | Lisp_Object position, object; |
d418ef42 JA |
584 | { |
585 | register INTERVAL i; | |
d418ef42 JA |
586 | |
587 | if (NILP (object)) | |
c8a4fc3d | 588 | XSETBUFFER (object, current_buffer); |
d418ef42 | 589 | |
1f5e848a | 590 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 JA |
591 | if (NULL_INTERVAL_P (i)) |
592 | return Qnil; | |
1f5e848a | 593 | /* If POSITION is at the end of the interval, |
d4b530ad RS |
594 | it means it's the end of OBJECT. |
595 | There are no properties at the very end, | |
596 | since no character follows. */ | |
1f5e848a | 597 | if (XINT (position) == LENGTH (i) + i->position) |
d4b530ad | 598 | return Qnil; |
d418ef42 JA |
599 | |
600 | return i->plist; | |
601 | } | |
602 | ||
5fbe2a44 | 603 | DEFUN ("get-text-property", Fget_text_property, Sget_text_property, 2, 3, 0, |
8c1a1077 PJ |
604 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
605 | OBJECT is optional and defaults to the current buffer. | |
606 | If POSITION is at the end of OBJECT, the value is nil. */) | |
607 | (position, prop, object) | |
1f5e848a | 608 | Lisp_Object position, object; |
46bb7c2b | 609 | Lisp_Object prop; |
5fbe2a44 | 610 | { |
1f5e848a | 611 | return textget (Ftext_properties_at (position, object), prop); |
5fbe2a44 RS |
612 | } |
613 | ||
bcf97349 | 614 | /* Return the value of char's property PROP, in OBJECT at POSITION. |
8d41abc4 MB |
615 | OBJECT is optional and defaults to the current buffer. |
616 | If OVERLAY is non-0, then in the case that the returned property is from | |
617 | an overlay, the overlay found is returned in *OVERLAY, otherwise nil is | |
618 | returned in *OVERLAY. | |
619 | If POSITION is at the end of OBJECT, the value is nil. | |
620 | If OBJECT is a buffer, then overlay properties are considered as well as | |
621 | text properties. | |
622 | If OBJECT is a window, then that window's buffer is used, but | |
623 | window-specific overlays are considered only if they are associated | |
624 | with OBJECT. */ | |
625 | Lisp_Object | |
626 | get_char_property_and_overlay (position, prop, object, overlay) | |
1f5e848a | 627 | Lisp_Object position, object; |
f5957179 | 628 | register Lisp_Object prop; |
8d41abc4 | 629 | Lisp_Object *overlay; |
f5957179 KH |
630 | { |
631 | struct window *w = 0; | |
632 | ||
b7826503 | 633 | CHECK_NUMBER_COERCE_MARKER (position); |
f5957179 KH |
634 | |
635 | if (NILP (object)) | |
c8a4fc3d | 636 | XSETBUFFER (object, current_buffer); |
f5957179 KH |
637 | |
638 | if (WINDOWP (object)) | |
639 | { | |
640 | w = XWINDOW (object); | |
64a49ca7 | 641 | object = w->buffer; |
f5957179 KH |
642 | } |
643 | if (BUFFERP (object)) | |
644 | { | |
f5957179 | 645 | int noverlays; |
b5be4dbe | 646 | Lisp_Object *overlay_vec; |
cbc55f55 RS |
647 | struct buffer *obuf = current_buffer; |
648 | ||
649 | set_buffer_temp (XBUFFER (object)); | |
f5957179 | 650 | |
b5be4dbe | 651 | GET_OVERLAYS_AT (XINT (position), overlay_vec, noverlays, NULL, 0); |
f5957179 KH |
652 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
653 | ||
cbc55f55 RS |
654 | set_buffer_temp (obuf); |
655 | ||
f5957179 KH |
656 | /* Now check the overlays in order of decreasing priority. */ |
657 | while (--noverlays >= 0) | |
658 | { | |
b5be4dbe | 659 | Lisp_Object tem = Foverlay_get (overlay_vec[noverlays], prop); |
f5957179 | 660 | if (!NILP (tem)) |
8d41abc4 MB |
661 | { |
662 | if (overlay) | |
663 | /* Return the overlay we got the property from. */ | |
664 | *overlay = overlay_vec[noverlays]; | |
665 | return tem; | |
666 | } | |
f5957179 KH |
667 | } |
668 | } | |
8d41abc4 MB |
669 | |
670 | if (overlay) | |
671 | /* Indicate that the return value is not from an overlay. */ | |
672 | *overlay = Qnil; | |
673 | ||
f5957179 KH |
674 | /* Not a buffer, or no appropriate overlay, so fall through to the |
675 | simpler case. */ | |
8d41abc4 MB |
676 | return Fget_text_property (position, prop, object); |
677 | } | |
678 | ||
679 | DEFUN ("get-char-property", Fget_char_property, Sget_char_property, 2, 3, 0, | |
8c1a1077 | 680 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
8faef085 | 681 | Both overlay properties and text properties are checked. |
8c1a1077 PJ |
682 | OBJECT is optional and defaults to the current buffer. |
683 | If POSITION is at the end of OBJECT, the value is nil. | |
684 | If OBJECT is a buffer, then overlay properties are considered as well as | |
685 | text properties. | |
686 | If OBJECT is a window, then that window's buffer is used, but window-specific | |
687 | overlays are considered only if they are associated with OBJECT. */) | |
688 | (position, prop, object) | |
8d41abc4 MB |
689 | Lisp_Object position, object; |
690 | register Lisp_Object prop; | |
691 | { | |
692 | return get_char_property_and_overlay (position, prop, object, 0); | |
f5957179 | 693 | } |
97a1bc63 LT |
694 | |
695 | DEFUN ("get-char-property-and-overlay", Fget_char_property_and_overlay, | |
696 | Sget_char_property_and_overlay, 2, 3, 0, | |
697 | doc: /* Like `get-char-property', but with extra overlay information. | |
95555145 RS |
698 | The value is a cons cell. Its car is the return value of `get-char-property' |
699 | with the same arguments--that is, the value of POSITION's property | |
700 | PROP in OBJECT. Its cdr is the overlay in which the property was | |
97a1bc63 | 701 | found, or nil, if it was found as a text property or not found at all. |
95555145 | 702 | |
97a1bc63 LT |
703 | OBJECT is optional and defaults to the current buffer. OBJECT may be |
704 | a string, a buffer or a window. For strings, the cdr of the return | |
705 | value is always nil, since strings do not have overlays. If OBJECT is | |
706 | a window, then that window's buffer is used, but window-specific | |
707 | overlays are considered only if they are associated with OBJECT. If | |
708 | POSITION is at the end of OBJECT, both car and cdr are nil. */) | |
709 | (position, prop, object) | |
710 | Lisp_Object position, object; | |
711 | register Lisp_Object prop; | |
712 | { | |
713 | Lisp_Object overlay; | |
714 | Lisp_Object val | |
715 | = get_char_property_and_overlay (position, prop, object, &overlay); | |
716 | return Fcons(val, overlay); | |
717 | } | |
718 | ||
fcab51aa RS |
719 | \f |
720 | DEFUN ("next-char-property-change", Fnext_char_property_change, | |
721 | Snext_char_property_change, 1, 2, 0, | |
8c1a1077 | 722 | doc: /* Return the position of next text property or overlay change. |
81f6e55f FP |
723 | This scans characters forward in the current buffer from POSITION till |
724 | it finds a change in some text property, or the beginning or end of an | |
725 | overlay, and returns the position of that. | |
85cc6738 | 726 | If none is found up to (point-max), the function returns (point-max). |
8c1a1077 | 727 | |
a41292c2 | 728 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
729 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
730 | LIMIT is a no-op if it is greater than (point-max). */) | |
8c1a1077 | 731 | (position, limit) |
fcab51aa RS |
732 | Lisp_Object position, limit; |
733 | { | |
734 | Lisp_Object temp; | |
735 | ||
736 | temp = Fnext_overlay_change (position); | |
737 | if (! NILP (limit)) | |
738 | { | |
d615870a | 739 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
740 | if (XINT (limit) < XINT (temp)) |
741 | temp = limit; | |
742 | } | |
743 | return Fnext_property_change (position, Qnil, temp); | |
744 | } | |
745 | ||
746 | DEFUN ("previous-char-property-change", Fprevious_char_property_change, | |
747 | Sprevious_char_property_change, 1, 2, 0, | |
8c1a1077 | 748 | doc: /* Return the position of previous text property or overlay change. |
81f6e55f FP |
749 | Scans characters backward in the current buffer from POSITION till it |
750 | finds a change in some text property, or the beginning or end of an | |
751 | overlay, and returns the position of that. | |
85cc6738 | 752 | If none is found since (point-min), the function returns (point-min). |
8c1a1077 | 753 | |
a41292c2 | 754 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
755 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
756 | LIMIT is a no-op if it is less than (point-min). */) | |
8c1a1077 | 757 | (position, limit) |
fcab51aa RS |
758 | Lisp_Object position, limit; |
759 | { | |
760 | Lisp_Object temp; | |
f5957179 | 761 | |
fcab51aa RS |
762 | temp = Fprevious_overlay_change (position); |
763 | if (! NILP (limit)) | |
764 | { | |
d615870a | 765 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
766 | if (XINT (limit) > XINT (temp)) |
767 | temp = limit; | |
768 | } | |
769 | return Fprevious_property_change (position, Qnil, temp); | |
770 | } | |
0b0737d1 GM |
771 | |
772 | ||
b7e047fb MB |
773 | DEFUN ("next-single-char-property-change", Fnext_single_char_property_change, |
774 | Snext_single_char_property_change, 2, 4, 0, | |
8c1a1077 PJ |
775 | doc: /* Return the position of next text property or overlay change for a specific property. |
776 | Scans characters forward from POSITION till it finds | |
777 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
778 | If the optional third argument OBJECT is a buffer (or nil, which means |
779 | the current buffer), POSITION is a buffer position (integer or marker). | |
780 | If OBJECT is a string, POSITION is a 0-based index into it. | |
781 | ||
85cc6738 RS |
782 | In a string, scan runs to the end of the string. |
783 | In a buffer, it runs to (point-max), and the value cannot exceed that. | |
784 | ||
8c1a1077 PJ |
785 | The property values are compared with `eq'. |
786 | If the property is constant all the way to the end of OBJECT, return the | |
787 | last valid position in OBJECT. | |
788 | If the optional fourth argument LIMIT is non-nil, don't search | |
789 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
790 | (position, prop, object, limit) | |
b7e047fb | 791 | Lisp_Object prop, position, object, limit; |
0b0737d1 GM |
792 | { |
793 | if (STRINGP (object)) | |
794 | { | |
b7e047fb MB |
795 | position = Fnext_single_property_change (position, prop, object, limit); |
796 | if (NILP (position)) | |
0b0737d1 GM |
797 | { |
798 | if (NILP (limit)) | |
d5db4077 | 799 | position = make_number (SCHARS (object)); |
0b0737d1 | 800 | else |
d615870a DK |
801 | { |
802 | CHECK_NUMBER (limit); | |
803 | position = limit; | |
804 | } | |
0b0737d1 GM |
805 | } |
806 | } | |
807 | else | |
808 | { | |
809 | Lisp_Object initial_value, value; | |
aed13378 | 810 | int count = SPECPDL_INDEX (); |
0b0737d1 | 811 | |
b7e047fb | 812 | if (! NILP (object)) |
b7826503 | 813 | CHECK_BUFFER (object); |
81f6e55f | 814 | |
0b0737d1 GM |
815 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
816 | { | |
817 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
818 | Fset_buffer (object); | |
819 | } | |
820 | ||
d615870a DK |
821 | CHECK_NUMBER_COERCE_MARKER (position); |
822 | ||
b7e047fb | 823 | initial_value = Fget_char_property (position, prop, object); |
81f6e55f | 824 | |
b7e047fb | 825 | if (NILP (limit)) |
85cc6738 | 826 | XSETFASTINT (limit, ZV); |
b7e047fb | 827 | else |
b7826503 | 828 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 829 | |
85cc6738 | 830 | if (XFASTINT (position) >= XFASTINT (limit)) |
0b0737d1 | 831 | { |
85cc6738 RS |
832 | position = limit; |
833 | if (XFASTINT (position) > ZV) | |
834 | XSETFASTINT (position, ZV); | |
0b0737d1 | 835 | } |
85cc6738 RS |
836 | else |
837 | while (1) | |
838 | { | |
839 | position = Fnext_char_property_change (position, limit); | |
840 | if (XFASTINT (position) >= XFASTINT (limit)) | |
841 | { | |
842 | position = limit; | |
843 | break; | |
844 | } | |
845 | ||
846 | value = Fget_char_property (position, prop, object); | |
847 | if (!EQ (value, initial_value)) | |
848 | break; | |
849 | } | |
0b0737d1 GM |
850 | |
851 | unbind_to (count, Qnil); | |
852 | } | |
853 | ||
b7e047fb | 854 | return position; |
0b0737d1 GM |
855 | } |
856 | ||
b7e047fb MB |
857 | DEFUN ("previous-single-char-property-change", |
858 | Fprevious_single_char_property_change, | |
859 | Sprevious_single_char_property_change, 2, 4, 0, | |
8c1a1077 PJ |
860 | doc: /* Return the position of previous text property or overlay change for a specific property. |
861 | Scans characters backward from POSITION till it finds | |
862 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
863 | If the optional third argument OBJECT is a buffer (or nil, which means |
864 | the current buffer), POSITION is a buffer position (integer or marker). | |
865 | If OBJECT is a string, POSITION is a 0-based index into it. | |
866 | ||
85cc6738 RS |
867 | In a string, scan runs to the start of the string. |
868 | In a buffer, it runs to (point-min), and the value cannot be less than that. | |
869 | ||
8c1a1077 PJ |
870 | The property values are compared with `eq'. |
871 | If the property is constant all the way to the start of OBJECT, return the | |
872 | first valid position in OBJECT. | |
873 | If the optional fourth argument LIMIT is non-nil, don't search | |
874 | back past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
875 | (position, prop, object, limit) | |
b7e047fb MB |
876 | Lisp_Object prop, position, object, limit; |
877 | { | |
878 | if (STRINGP (object)) | |
879 | { | |
880 | position = Fprevious_single_property_change (position, prop, object, limit); | |
881 | if (NILP (position)) | |
882 | { | |
883 | if (NILP (limit)) | |
d5db4077 | 884 | position = make_number (SCHARS (object)); |
b7e047fb | 885 | else |
d615870a DK |
886 | { |
887 | CHECK_NUMBER (limit); | |
888 | position = limit; | |
889 | } | |
b7e047fb MB |
890 | } |
891 | } | |
892 | else | |
893 | { | |
aed13378 | 894 | int count = SPECPDL_INDEX (); |
b7e047fb MB |
895 | |
896 | if (! NILP (object)) | |
b7826503 | 897 | CHECK_BUFFER (object); |
81f6e55f | 898 | |
b7e047fb MB |
899 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
900 | { | |
901 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
902 | Fset_buffer (object); | |
903 | } | |
81f6e55f | 904 | |
d615870a DK |
905 | CHECK_NUMBER_COERCE_MARKER (position); |
906 | ||
b7e047fb | 907 | if (NILP (limit)) |
85cc6738 | 908 | XSETFASTINT (limit, BEGV); |
b7e047fb | 909 | else |
b7826503 | 910 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 911 | |
ce6b02e0 | 912 | if (XFASTINT (position) <= XFASTINT (limit)) |
85cc6738 RS |
913 | { |
914 | position = limit; | |
915 | if (XFASTINT (position) < BEGV) | |
916 | XSETFASTINT (position, BEGV); | |
917 | } | |
ce6b02e0 | 918 | else |
b7e047fb | 919 | { |
85cc6738 RS |
920 | Lisp_Object initial_value |
921 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
922 | prop, object); | |
81f6e55f | 923 | |
85cc6738 | 924 | while (1) |
ce6b02e0 MB |
925 | { |
926 | position = Fprevious_char_property_change (position, limit); | |
0b0737d1 | 927 | |
ce6b02e0 MB |
928 | if (XFASTINT (position) <= XFASTINT (limit)) |
929 | { | |
930 | position = limit; | |
931 | break; | |
932 | } | |
933 | else | |
934 | { | |
85cc6738 RS |
935 | Lisp_Object value |
936 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
937 | prop, object); | |
ce6b02e0 MB |
938 | |
939 | if (!EQ (value, initial_value)) | |
940 | break; | |
941 | } | |
942 | } | |
b7e047fb MB |
943 | } |
944 | ||
945 | unbind_to (count, Qnil); | |
946 | } | |
947 | ||
948 | return position; | |
949 | } | |
fcab51aa | 950 | \f |
d418ef42 | 951 | DEFUN ("next-property-change", Fnext_property_change, |
111b637d | 952 | Snext_property_change, 1, 3, 0, |
8c1a1077 PJ |
953 | doc: /* Return the position of next property change. |
954 | Scans characters forward from POSITION in OBJECT till it finds | |
955 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
956 | If the optional second argument OBJECT is a buffer (or nil, which means |
957 | the current buffer), POSITION is a buffer position (integer or marker). | |
958 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
959 | Return nil if the property is constant all the way to the end of OBJECT. |
960 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
961 | ||
962 | If the optional third argument LIMIT is non-nil, don't search | |
963 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
964 | (position, object, limit) | |
1f5e848a | 965 | Lisp_Object position, object, limit; |
d418ef42 JA |
966 | { |
967 | register INTERVAL i, next; | |
968 | ||
5fbe2a44 | 969 | if (NILP (object)) |
c8a4fc3d | 970 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 971 | |
3a232704 | 972 | if (!NILP (limit) && !EQ (limit, Qt)) |
b7826503 | 973 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 974 | |
1f5e848a | 975 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 | 976 | |
041aa96f RS |
977 | /* If LIMIT is t, return start of next interval--don't |
978 | bother checking further intervals. */ | |
979 | if (EQ (limit, Qt)) | |
980 | { | |
44214c1b RS |
981 | if (NULL_INTERVAL_P (i)) |
982 | next = i; | |
983 | else | |
984 | next = next_interval (i); | |
81f6e55f | 985 | |
c7b6dfa6 | 986 | if (NULL_INTERVAL_P (next)) |
1f5e848a | 987 | XSETFASTINT (position, (STRINGP (object) |
d5db4077 | 988 | ? SCHARS (object) |
1f5e848a | 989 | : BUF_ZV (XBUFFER (object)))); |
c7b6dfa6 | 990 | else |
ad077db0 | 991 | XSETFASTINT (position, next->position); |
1f5e848a | 992 | return position; |
041aa96f RS |
993 | } |
994 | ||
44214c1b RS |
995 | if (NULL_INTERVAL_P (i)) |
996 | return limit; | |
997 | ||
998 | next = next_interval (i); | |
999 | ||
3a232704 | 1000 | while (!NULL_INTERVAL_P (next) && intervals_equal (i, next) |
ad077db0 | 1001 | && (NILP (limit) || next->position < XFASTINT (limit))) |
d418ef42 JA |
1002 | next = next_interval (next); |
1003 | ||
52c0f270 CY |
1004 | if (NULL_INTERVAL_P (next) |
1005 | || (next->position | |
1006 | >= (INTEGERP (limit) | |
1007 | ? XFASTINT (limit) | |
1008 | : (STRINGP (object) | |
1009 | ? SCHARS (object) | |
1010 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 1011 | return limit; |
52c0f270 CY |
1012 | else |
1013 | return make_number (next->position); | |
19e1c426 RS |
1014 | } |
1015 | ||
1016 | /* Return 1 if there's a change in some property between BEG and END. */ | |
1017 | ||
1018 | int | |
1019 | property_change_between_p (beg, end) | |
1020 | int beg, end; | |
1021 | { | |
1022 | register INTERVAL i, next; | |
1023 | Lisp_Object object, pos; | |
1024 | ||
c8a4fc3d | 1025 | XSETBUFFER (object, current_buffer); |
e9c4fbcd | 1026 | XSETFASTINT (pos, beg); |
19e1c426 RS |
1027 | |
1028 | i = validate_interval_range (object, &pos, &pos, soft); | |
1029 | if (NULL_INTERVAL_P (i)) | |
1030 | return 0; | |
1031 | ||
1032 | next = next_interval (i); | |
1033 | while (! NULL_INTERVAL_P (next) && intervals_equal (i, next)) | |
1034 | { | |
1035 | next = next_interval (next); | |
e050ef74 RS |
1036 | if (NULL_INTERVAL_P (next)) |
1037 | return 0; | |
ad077db0 | 1038 | if (next->position >= end) |
19e1c426 RS |
1039 | return 0; |
1040 | } | |
1041 | ||
1042 | if (NULL_INTERVAL_P (next)) | |
1043 | return 0; | |
1044 | ||
1045 | return 1; | |
d418ef42 JA |
1046 | } |
1047 | ||
9c79dd1b | 1048 | DEFUN ("next-single-property-change", Fnext_single_property_change, |
111b637d | 1049 | Snext_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
1050 | doc: /* Return the position of next property change for a specific property. |
1051 | Scans characters forward from POSITION till it finds | |
1052 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
1053 | If the optional third argument OBJECT is a buffer (or nil, which means |
1054 | the current buffer), POSITION is a buffer position (integer or marker). | |
1055 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1056 | The property values are compared with `eq'. |
1057 | Return nil if the property is constant all the way to the end of OBJECT. | |
1058 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
1059 | ||
1060 | If the optional fourth argument LIMIT is non-nil, don't search | |
1061 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
1062 | (position, prop, object, limit) | |
1f5e848a | 1063 | Lisp_Object position, prop, object, limit; |
9c79dd1b JA |
1064 | { |
1065 | register INTERVAL i, next; | |
1066 | register Lisp_Object here_val; | |
1067 | ||
5fbe2a44 | 1068 | if (NILP (object)) |
c8a4fc3d | 1069 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1070 | |
1387d54e | 1071 | if (!NILP (limit)) |
b7826503 | 1072 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1073 | |
1f5e848a | 1074 | i = validate_interval_range (object, &position, &position, soft); |
9c79dd1b | 1075 | if (NULL_INTERVAL_P (i)) |
111b637d | 1076 | return limit; |
9c79dd1b | 1077 | |
6a0486dd | 1078 | here_val = textget (i->plist, prop); |
9c79dd1b | 1079 | next = next_interval (i); |
81f6e55f | 1080 | while (! NULL_INTERVAL_P (next) |
111b637d | 1081 | && EQ (here_val, textget (next->plist, prop)) |
ad077db0 | 1082 | && (NILP (limit) || next->position < XFASTINT (limit))) |
9c79dd1b JA |
1083 | next = next_interval (next); |
1084 | ||
52c0f270 CY |
1085 | if (NULL_INTERVAL_P (next) |
1086 | || (next->position | |
1087 | >= (INTEGERP (limit) | |
1088 | ? XFASTINT (limit) | |
1089 | : (STRINGP (object) | |
1090 | ? SCHARS (object) | |
1091 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 1092 | return limit; |
52c0f270 CY |
1093 | else |
1094 | return make_number (next->position); | |
9c79dd1b JA |
1095 | } |
1096 | ||
d418ef42 | 1097 | DEFUN ("previous-property-change", Fprevious_property_change, |
111b637d | 1098 | Sprevious_property_change, 1, 3, 0, |
8c1a1077 PJ |
1099 | doc: /* Return the position of previous property change. |
1100 | Scans characters backwards from POSITION in OBJECT till it finds | |
1101 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
1102 | If the optional second argument OBJECT is a buffer (or nil, which means |
1103 | the current buffer), POSITION is a buffer position (integer or marker). | |
1104 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1105 | Return nil if the property is constant all the way to the start of OBJECT. |
1106 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1107 | ||
1108 | If the optional third argument LIMIT is non-nil, don't search | |
1109 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
1110 | (position, object, limit) | |
1f5e848a | 1111 | Lisp_Object position, object, limit; |
d418ef42 JA |
1112 | { |
1113 | register INTERVAL i, previous; | |
1114 | ||
5fbe2a44 | 1115 | if (NILP (object)) |
c8a4fc3d | 1116 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1117 | |
1387d54e | 1118 | if (!NILP (limit)) |
b7826503 | 1119 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1120 | |
1f5e848a | 1121 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 | 1122 | if (NULL_INTERVAL_P (i)) |
111b637d | 1123 | return limit; |
d418ef42 | 1124 | |
53b7feec | 1125 | /* Start with the interval containing the char before point. */ |
1f5e848a | 1126 | if (i->position == XFASTINT (position)) |
53b7feec RS |
1127 | i = previous_interval (i); |
1128 | ||
d418ef42 | 1129 | previous = previous_interval (i); |
3a232704 | 1130 | while (!NULL_INTERVAL_P (previous) && intervals_equal (previous, i) |
111b637d | 1131 | && (NILP (limit) |
ad077db0 | 1132 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
d418ef42 | 1133 | previous = previous_interval (previous); |
d418ef42 | 1134 | |
52c0f270 CY |
1135 | if (NULL_INTERVAL_P (previous) |
1136 | || (previous->position + LENGTH (previous) | |
1137 | <= (INTEGERP (limit) | |
1138 | ? XFASTINT (limit) | |
1139 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1140 | return limit; | |
1141 | else | |
1142 | return make_number (previous->position + LENGTH (previous)); | |
d418ef42 JA |
1143 | } |
1144 | ||
9c79dd1b | 1145 | DEFUN ("previous-single-property-change", Fprevious_single_property_change, |
111b637d | 1146 | Sprevious_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
1147 | doc: /* Return the position of previous property change for a specific property. |
1148 | Scans characters backward from POSITION till it finds | |
1149 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
1150 | If the optional third argument OBJECT is a buffer (or nil, which means |
1151 | the current buffer), POSITION is a buffer position (integer or marker). | |
1152 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1153 | The property values are compared with `eq'. |
1154 | Return nil if the property is constant all the way to the start of OBJECT. | |
1155 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1156 | ||
1157 | If the optional fourth argument LIMIT is non-nil, don't search | |
1158 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
1f5e848a EN |
1159 | (position, prop, object, limit) |
1160 | Lisp_Object position, prop, object, limit; | |
9c79dd1b JA |
1161 | { |
1162 | register INTERVAL i, previous; | |
1163 | register Lisp_Object here_val; | |
1164 | ||
5fbe2a44 | 1165 | if (NILP (object)) |
c8a4fc3d | 1166 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1167 | |
1387d54e | 1168 | if (!NILP (limit)) |
b7826503 | 1169 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1170 | |
1f5e848a | 1171 | i = validate_interval_range (object, &position, &position, soft); |
9c79dd1b | 1172 | |
53b7feec | 1173 | /* Start with the interval containing the char before point. */ |
3a232704 | 1174 | if (!NULL_INTERVAL_P (i) && i->position == XFASTINT (position)) |
53b7feec RS |
1175 | i = previous_interval (i); |
1176 | ||
6873cfa3 KH |
1177 | if (NULL_INTERVAL_P (i)) |
1178 | return limit; | |
1179 | ||
6a0486dd | 1180 | here_val = textget (i->plist, prop); |
9c79dd1b | 1181 | previous = previous_interval (i); |
3a232704 | 1182 | while (!NULL_INTERVAL_P (previous) |
111b637d RS |
1183 | && EQ (here_val, textget (previous->plist, prop)) |
1184 | && (NILP (limit) | |
ad077db0 | 1185 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
9c79dd1b | 1186 | previous = previous_interval (previous); |
9c79dd1b | 1187 | |
52c0f270 CY |
1188 | if (NULL_INTERVAL_P (previous) |
1189 | || (previous->position + LENGTH (previous) | |
1190 | <= (INTEGERP (limit) | |
1191 | ? XFASTINT (limit) | |
1192 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1193 | return limit; | |
1194 | else | |
1195 | return make_number (previous->position + LENGTH (previous)); | |
9c79dd1b | 1196 | } |
fcab51aa | 1197 | \f |
c98da214 RS |
1198 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1199 | ||
d418ef42 | 1200 | DEFUN ("add-text-properties", Fadd_text_properties, |
5fbe2a44 | 1201 | Sadd_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1202 | doc: /* Add properties to the text from START to END. |
1203 | The third argument PROPERTIES is a property list | |
81f6e55f FP |
1204 | specifying the property values to add. If the optional fourth argument |
1205 | OBJECT is a buffer (or nil, which means the current buffer), | |
1206 | START and END are buffer positions (integers or markers). | |
1207 | If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 PJ |
1208 | Return t if any property value actually changed, nil otherwise. */) |
1209 | (start, end, properties, object) | |
5fbe2a44 | 1210 | Lisp_Object start, end, properties, object; |
d418ef42 JA |
1211 | { |
1212 | register INTERVAL i, unchanged; | |
caa31568 | 1213 | register int s, len, modified = 0; |
c98da214 | 1214 | struct gcpro gcpro1; |
d418ef42 JA |
1215 | |
1216 | properties = validate_plist (properties); | |
1217 | if (NILP (properties)) | |
1218 | return Qnil; | |
1219 | ||
5fbe2a44 | 1220 | if (NILP (object)) |
c8a4fc3d | 1221 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1222 | |
d418ef42 JA |
1223 | i = validate_interval_range (object, &start, &end, hard); |
1224 | if (NULL_INTERVAL_P (i)) | |
1225 | return Qnil; | |
1226 | ||
1227 | s = XINT (start); | |
1228 | len = XINT (end) - s; | |
1229 | ||
c98da214 RS |
1230 | /* No need to protect OBJECT, because we GC only if it's a buffer, |
1231 | and live buffers are always protected. */ | |
1232 | GCPRO1 (properties); | |
1233 | ||
d418ef42 | 1234 | /* If we're not starting on an interval boundary, we have to |
cdf3e5a2 | 1235 | split this interval. */ |
d418ef42 JA |
1236 | if (i->position != s) |
1237 | { | |
1238 | /* If this interval already has the properties, we can | |
cdf3e5a2 | 1239 | skip it. */ |
d418ef42 JA |
1240 | if (interval_has_all_properties (properties, i)) |
1241 | { | |
1242 | int got = (LENGTH (i) - (s - i->position)); | |
1243 | if (got >= len) | |
64db1307 | 1244 | RETURN_UNGCPRO (Qnil); |
d418ef42 | 1245 | len -= got; |
05d5b93e | 1246 | i = next_interval (i); |
d418ef42 JA |
1247 | } |
1248 | else | |
1249 | { | |
1250 | unchanged = i; | |
ad9c1940 | 1251 | i = split_interval_right (unchanged, s - unchanged->position); |
d418ef42 | 1252 | copy_properties (unchanged, i); |
d418ef42 JA |
1253 | } |
1254 | } | |
1255 | ||
2a631db1 | 1256 | if (BUFFERP (object)) |
3e145152 | 1257 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1258 | |
daa5e28f | 1259 | /* We are at the beginning of interval I, with LEN chars to scan. */ |
caa31568 | 1260 | for (;;) |
d418ef42 | 1261 | { |
d4b530ad RS |
1262 | if (i == 0) |
1263 | abort (); | |
1264 | ||
d418ef42 JA |
1265 | if (LENGTH (i) >= len) |
1266 | { | |
c98da214 RS |
1267 | /* We can UNGCPRO safely here, because there will be just |
1268 | one more chance to gc, in the next call to add_properties, | |
1269 | and after that we will not need PROPERTIES or OBJECT again. */ | |
1270 | UNGCPRO; | |
1271 | ||
d418ef42 | 1272 | if (interval_has_all_properties (properties, i)) |
26c76ace | 1273 | { |
2a631db1 RS |
1274 | if (BUFFERP (object)) |
1275 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1276 | XINT (end) - XINT (start)); | |
26c76ace RS |
1277 | |
1278 | return modified ? Qt : Qnil; | |
1279 | } | |
d418ef42 JA |
1280 | |
1281 | if (LENGTH (i) == len) | |
1282 | { | |
d4b530ad | 1283 | add_properties (properties, i, object); |
2a631db1 RS |
1284 | if (BUFFERP (object)) |
1285 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1286 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1287 | return Qt; |
1288 | } | |
1289 | ||
1290 | /* i doesn't have the properties, and goes past the change limit */ | |
1291 | unchanged = i; | |
ad9c1940 | 1292 | i = split_interval_left (unchanged, len); |
d418ef42 | 1293 | copy_properties (unchanged, i); |
d4b530ad | 1294 | add_properties (properties, i, object); |
2a631db1 RS |
1295 | if (BUFFERP (object)) |
1296 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1297 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1298 | return Qt; |
1299 | } | |
1300 | ||
1301 | len -= LENGTH (i); | |
d4b530ad | 1302 | modified += add_properties (properties, i, object); |
d418ef42 JA |
1303 | i = next_interval (i); |
1304 | } | |
1305 | } | |
1306 | ||
c98da214 RS |
1307 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1308 | ||
d4b530ad RS |
1309 | DEFUN ("put-text-property", Fput_text_property, |
1310 | Sput_text_property, 4, 5, 0, | |
8c1a1077 PJ |
1311 | doc: /* Set one property of the text from START to END. |
1312 | The third and fourth arguments PROPERTY and VALUE | |
1313 | specify the property to add. | |
81f6e55f FP |
1314 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1315 | the current buffer), START and END are buffer positions (integers or | |
1316 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
8c1a1077 | 1317 | (start, end, property, value, object) |
1f5e848a | 1318 | Lisp_Object start, end, property, value, object; |
d4b530ad RS |
1319 | { |
1320 | Fadd_text_properties (start, end, | |
1f5e848a | 1321 | Fcons (property, Fcons (value, Qnil)), |
d4b530ad RS |
1322 | object); |
1323 | return Qnil; | |
1324 | } | |
1325 | ||
d418ef42 | 1326 | DEFUN ("set-text-properties", Fset_text_properties, |
5fbe2a44 | 1327 | Sset_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1328 | doc: /* Completely replace properties of text from START to END. |
1329 | The third argument PROPERTIES is the new property list. | |
81f6e55f FP |
1330 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1331 | the current buffer), START and END are buffer positions (integers or | |
1332 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 PJ |
1333 | If PROPERTIES is nil, the effect is to remove all properties from |
1334 | the designated part of OBJECT. */) | |
1335 | (start, end, properties, object) | |
1f5e848a | 1336 | Lisp_Object start, end, properties, object; |
0087ade6 GM |
1337 | { |
1338 | return set_text_properties (start, end, properties, object, Qt); | |
1339 | } | |
1340 | ||
1341 | ||
1342 | /* Replace properties of text from START to END with new list of | |
1343 | properties PROPERTIES. OBJECT is the buffer or string containing | |
1344 | the text. OBJECT nil means use the current buffer. | |
1345 | SIGNAL_AFTER_CHANGE_P nil means don't signal after changes. Value | |
537562fa LT |
1346 | is nil if the function _detected_ that it did not replace any |
1347 | properties, non-nil otherwise. */ | |
0087ade6 GM |
1348 | |
1349 | Lisp_Object | |
1350 | set_text_properties (start, end, properties, object, signal_after_change_p) | |
1351 | Lisp_Object start, end, properties, object, signal_after_change_p; | |
d418ef42 | 1352 | { |
28ff4293 | 1353 | register INTERVAL i; |
33d7d0df RS |
1354 | Lisp_Object ostart, oend; |
1355 | ||
1356 | ostart = start; | |
1357 | oend = end; | |
d418ef42 | 1358 | |
1f5e848a | 1359 | properties = validate_plist (properties); |
d418ef42 | 1360 | |
5fbe2a44 | 1361 | if (NILP (object)) |
c8a4fc3d | 1362 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1363 | |
919fa9cb RS |
1364 | /* If we want no properties for a whole string, |
1365 | get rid of its intervals. */ | |
1f5e848a | 1366 | if (NILP (properties) && STRINGP (object) |
919fa9cb | 1367 | && XFASTINT (start) == 0 |
d5db4077 | 1368 | && XFASTINT (end) == SCHARS (object)) |
919fa9cb | 1369 | { |
d5db4077 | 1370 | if (! STRING_INTERVALS (object)) |
537562fa | 1371 | return Qnil; |
26c76ace | 1372 | |
9056febe | 1373 | STRING_SET_INTERVALS (object, NULL_INTERVAL); |
919fa9cb RS |
1374 | return Qt; |
1375 | } | |
1376 | ||
facc570e | 1377 | i = validate_interval_range (object, &start, &end, soft); |
919fa9cb | 1378 | |
d418ef42 | 1379 | if (NULL_INTERVAL_P (i)) |
facc570e | 1380 | { |
1f5e848a EN |
1381 | /* If buffer has no properties, and we want none, return now. */ |
1382 | if (NILP (properties)) | |
facc570e RS |
1383 | return Qnil; |
1384 | ||
33d7d0df RS |
1385 | /* Restore the original START and END values |
1386 | because validate_interval_range increments them for strings. */ | |
1387 | start = ostart; | |
1388 | end = oend; | |
1389 | ||
facc570e RS |
1390 | i = validate_interval_range (object, &start, &end, hard); |
1391 | /* This can return if start == end. */ | |
1392 | if (NULL_INTERVAL_P (i)) | |
1393 | return Qnil; | |
1394 | } | |
d418ef42 | 1395 | |
2a631db1 | 1396 | if (BUFFERP (object)) |
3e145152 | 1397 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1398 | |
78ff4175 RS |
1399 | set_text_properties_1 (start, end, properties, object, i); |
1400 | ||
1401 | if (BUFFERP (object) && !NILP (signal_after_change_p)) | |
1402 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1403 | XINT (end) - XINT (start)); | |
1404 | return Qt; | |
1405 | } | |
1406 | ||
1407 | /* Replace properties of text from START to END with new list of | |
1408 | properties PROPERTIES. BUFFER is the buffer containing | |
1409 | the text. This does not obey any hooks. | |
1410 | You can provide the interval that START is located in as I, | |
ce768453 | 1411 | or pass NULL for I and this function will find it. |
49f68fd2 | 1412 | START and END can be in any order. */ |
78ff4175 RS |
1413 | |
1414 | void | |
1415 | set_text_properties_1 (start, end, properties, buffer, i) | |
1416 | Lisp_Object start, end, properties, buffer; | |
1417 | INTERVAL i; | |
1418 | { | |
1419 | register INTERVAL prev_changed = NULL_INTERVAL; | |
1420 | register int s, len; | |
1421 | INTERVAL unchanged; | |
1422 | ||
1423 | s = XINT (start); | |
1424 | len = XINT (end) - s; | |
49f68fd2 RS |
1425 | if (len == 0) |
1426 | return; | |
1427 | if (len < 0) | |
1428 | { | |
1429 | s = s + len; | |
1430 | len = - len; | |
1431 | } | |
1432 | ||
78ff4175 RS |
1433 | if (i == 0) |
1434 | i = find_interval (BUF_INTERVALS (XBUFFER (buffer)), s); | |
1435 | ||
d418ef42 JA |
1436 | if (i->position != s) |
1437 | { | |
1438 | unchanged = i; | |
ad9c1940 | 1439 | i = split_interval_right (unchanged, s - unchanged->position); |
7855e674 | 1440 | |
d418ef42 JA |
1441 | if (LENGTH (i) > len) |
1442 | { | |
9c79dd1b | 1443 | copy_properties (unchanged, i); |
ad9c1940 | 1444 | i = split_interval_left (i, len); |
78ff4175 RS |
1445 | set_properties (properties, i, buffer); |
1446 | return; | |
d418ef42 JA |
1447 | } |
1448 | ||
78ff4175 | 1449 | set_properties (properties, i, buffer); |
daa5e28f | 1450 | |
9c79dd1b | 1451 | if (LENGTH (i) == len) |
78ff4175 | 1452 | return; |
9c79dd1b JA |
1453 | |
1454 | prev_changed = i; | |
d418ef42 JA |
1455 | len -= LENGTH (i); |
1456 | i = next_interval (i); | |
1457 | } | |
1458 | ||
cd7d971d | 1459 | /* We are starting at the beginning of an interval, I */ |
7855e674 | 1460 | while (len > 0) |
d418ef42 | 1461 | { |
d4b530ad RS |
1462 | if (i == 0) |
1463 | abort (); | |
1464 | ||
d418ef42 JA |
1465 | if (LENGTH (i) >= len) |
1466 | { | |
cd7d971d | 1467 | if (LENGTH (i) > len) |
ad9c1940 | 1468 | i = split_interval_left (i, len); |
d418ef42 | 1469 | |
6f232881 RS |
1470 | /* We have to call set_properties even if we are going to |
1471 | merge the intervals, so as to make the undo records | |
1472 | and cause redisplay to happen. */ | |
78ff4175 | 1473 | set_properties (properties, i, buffer); |
6f232881 | 1474 | if (!NULL_INTERVAL_P (prev_changed)) |
9c79dd1b | 1475 | merge_interval_left (i); |
78ff4175 | 1476 | return; |
d418ef42 JA |
1477 | } |
1478 | ||
1479 | len -= LENGTH (i); | |
6f232881 RS |
1480 | |
1481 | /* We have to call set_properties even if we are going to | |
1482 | merge the intervals, so as to make the undo records | |
1483 | and cause redisplay to happen. */ | |
78ff4175 | 1484 | set_properties (properties, i, buffer); |
9c79dd1b | 1485 | if (NULL_INTERVAL_P (prev_changed)) |
6f232881 | 1486 | prev_changed = i; |
9c79dd1b JA |
1487 | else |
1488 | prev_changed = i = merge_interval_left (i); | |
1489 | ||
d418ef42 JA |
1490 | i = next_interval (i); |
1491 | } | |
d418ef42 JA |
1492 | } |
1493 | ||
1494 | DEFUN ("remove-text-properties", Fremove_text_properties, | |
5fbe2a44 | 1495 | Sremove_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1496 | doc: /* Remove some properties from text from START to END. |
1497 | The third argument PROPERTIES is a property list | |
1498 | whose property names specify the properties to remove. | |
1499 | \(The values stored in PROPERTIES are ignored.) | |
81f6e55f FP |
1500 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1501 | the current buffer), START and END are buffer positions (integers or | |
1502 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
1503 | Return t if any property was actually removed, nil otherwise. | |
1504 | ||
1505 | Use set-text-properties if you want to remove all text properties. */) | |
8c1a1077 | 1506 | (start, end, properties, object) |
1f5e848a | 1507 | Lisp_Object start, end, properties, object; |
d418ef42 JA |
1508 | { |
1509 | register INTERVAL i, unchanged; | |
caa31568 | 1510 | register int s, len, modified = 0; |
d418ef42 | 1511 | |
5fbe2a44 | 1512 | if (NILP (object)) |
c8a4fc3d | 1513 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1514 | |
d418ef42 JA |
1515 | i = validate_interval_range (object, &start, &end, soft); |
1516 | if (NULL_INTERVAL_P (i)) | |
1517 | return Qnil; | |
1518 | ||
1519 | s = XINT (start); | |
1520 | len = XINT (end) - s; | |
9c79dd1b | 1521 | |
d418ef42 JA |
1522 | if (i->position != s) |
1523 | { | |
1524 | /* No properties on this first interval -- return if | |
cdf3e5a2 | 1525 | it covers the entire region. */ |
1f5e848a | 1526 | if (! interval_has_some_properties (properties, i)) |
d418ef42 JA |
1527 | { |
1528 | int got = (LENGTH (i) - (s - i->position)); | |
1529 | if (got >= len) | |
1530 | return Qnil; | |
1531 | len -= got; | |
05d5b93e | 1532 | i = next_interval (i); |
d418ef42 | 1533 | } |
daa5e28f RS |
1534 | /* Split away the beginning of this interval; what we don't |
1535 | want to modify. */ | |
d418ef42 JA |
1536 | else |
1537 | { | |
1538 | unchanged = i; | |
ad9c1940 | 1539 | i = split_interval_right (unchanged, s - unchanged->position); |
d418ef42 | 1540 | copy_properties (unchanged, i); |
d418ef42 JA |
1541 | } |
1542 | } | |
1543 | ||
2a631db1 | 1544 | if (BUFFERP (object)) |
3e145152 | 1545 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1546 | |
d418ef42 | 1547 | /* We are at the beginning of an interval, with len to scan */ |
caa31568 | 1548 | for (;;) |
d418ef42 | 1549 | { |
d4b530ad RS |
1550 | if (i == 0) |
1551 | abort (); | |
1552 | ||
d418ef42 JA |
1553 | if (LENGTH (i) >= len) |
1554 | { | |
1f5e848a | 1555 | if (! interval_has_some_properties (properties, i)) |
d418ef42 JA |
1556 | return modified ? Qt : Qnil; |
1557 | ||
1558 | if (LENGTH (i) == len) | |
1559 | { | |
11713b6d RS |
1560 | remove_properties (properties, Qnil, i, object); |
1561 | if (BUFFERP (object)) | |
1562 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1563 | XINT (end) - XINT (start)); | |
1564 | return Qt; | |
1565 | } | |
1566 | ||
1567 | /* i has the properties, and goes past the change limit */ | |
1568 | unchanged = i; | |
1569 | i = split_interval_left (i, len); | |
1570 | copy_properties (unchanged, i); | |
1571 | remove_properties (properties, Qnil, i, object); | |
1572 | if (BUFFERP (object)) | |
1573 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1574 | XINT (end) - XINT (start)); | |
1575 | return Qt; | |
1576 | } | |
1577 | ||
1578 | len -= LENGTH (i); | |
1579 | modified += remove_properties (properties, Qnil, i, object); | |
1580 | i = next_interval (i); | |
1581 | } | |
1582 | } | |
1583 | ||
1584 | DEFUN ("remove-list-of-text-properties", Fremove_list_of_text_properties, | |
1585 | Sremove_list_of_text_properties, 3, 4, 0, | |
1586 | doc: /* Remove some properties from text from START to END. | |
1587 | The third argument LIST-OF-PROPERTIES is a list of property names to remove. | |
81f6e55f FP |
1588 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1589 | the current buffer), START and END are buffer positions (integers or | |
1590 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
11713b6d RS |
1591 | Return t if any property was actually removed, nil otherwise. */) |
1592 | (start, end, list_of_properties, object) | |
1593 | Lisp_Object start, end, list_of_properties, object; | |
1594 | { | |
1595 | register INTERVAL i, unchanged; | |
1596 | register int s, len, modified = 0; | |
1597 | Lisp_Object properties; | |
1598 | properties = list_of_properties; | |
1599 | ||
1600 | if (NILP (object)) | |
1601 | XSETBUFFER (object, current_buffer); | |
1602 | ||
1603 | i = validate_interval_range (object, &start, &end, soft); | |
1604 | if (NULL_INTERVAL_P (i)) | |
1605 | return Qnil; | |
1606 | ||
1607 | s = XINT (start); | |
1608 | len = XINT (end) - s; | |
1609 | ||
1610 | if (i->position != s) | |
1611 | { | |
1612 | /* No properties on this first interval -- return if | |
1613 | it covers the entire region. */ | |
1614 | if (! interval_has_some_properties_list (properties, i)) | |
1615 | { | |
1616 | int got = (LENGTH (i) - (s - i->position)); | |
1617 | if (got >= len) | |
1618 | return Qnil; | |
1619 | len -= got; | |
1620 | i = next_interval (i); | |
1621 | } | |
1622 | /* Split away the beginning of this interval; what we don't | |
1623 | want to modify. */ | |
1624 | else | |
1625 | { | |
1626 | unchanged = i; | |
1627 | i = split_interval_right (unchanged, s - unchanged->position); | |
1628 | copy_properties (unchanged, i); | |
1629 | } | |
1630 | } | |
1631 | ||
9b17c9f5 LH |
1632 | /* We are at the beginning of an interval, with len to scan. |
1633 | The flag `modified' records if changes have been made. | |
1634 | When object is a buffer, we must call modify_region before changes are | |
1635 | made and signal_after_change when we are done. | |
1636 | We call modify_region before calling remove_properties iff modified == 0, | |
1637 | and we call signal_after_change before returning iff modified != 0. */ | |
11713b6d RS |
1638 | for (;;) |
1639 | { | |
1640 | if (i == 0) | |
1641 | abort (); | |
1642 | ||
1643 | if (LENGTH (i) >= len) | |
1644 | { | |
1645 | if (! interval_has_some_properties_list (properties, i)) | |
9b17c9f5 LH |
1646 | if (modified) |
1647 | { | |
1648 | if (BUFFERP (object)) | |
1649 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1650 | XINT (end) - XINT (start)); | |
1651 | return Qt; | |
1652 | } | |
1653 | else | |
1654 | return Qnil; | |
11713b6d RS |
1655 | |
1656 | if (LENGTH (i) == len) | |
1657 | { | |
9b17c9f5 | 1658 | if (!modified && BUFFERP (object)) |
3e145152 | 1659 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
11713b6d | 1660 | remove_properties (Qnil, properties, i, object); |
2a631db1 RS |
1661 | if (BUFFERP (object)) |
1662 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1663 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1664 | return Qt; |
1665 | } | |
1666 | ||
1667 | /* i has the properties, and goes past the change limit */ | |
daa5e28f | 1668 | unchanged = i; |
ad9c1940 | 1669 | i = split_interval_left (i, len); |
d418ef42 | 1670 | copy_properties (unchanged, i); |
9b17c9f5 | 1671 | if (!modified && BUFFERP (object)) |
3e145152 | 1672 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
11713b6d | 1673 | remove_properties (Qnil, properties, i, object); |
2a631db1 RS |
1674 | if (BUFFERP (object)) |
1675 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1676 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1677 | return Qt; |
1678 | } | |
1679 | ||
9b17c9f5 LH |
1680 | if (interval_has_some_properties_list (properties, i)) |
1681 | { | |
1682 | if (!modified && BUFFERP (object)) | |
3e145152 | 1683 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
9b17c9f5 LH |
1684 | remove_properties (Qnil, properties, i, object); |
1685 | modified = 1; | |
1686 | } | |
d418ef42 | 1687 | len -= LENGTH (i); |
d418ef42 JA |
1688 | i = next_interval (i); |
1689 | } | |
1690 | } | |
fcab51aa | 1691 | \f |
ad9c1940 JB |
1692 | DEFUN ("text-property-any", Ftext_property_any, |
1693 | Stext_property_any, 4, 5, 0, | |
8c1a1077 PJ |
1694 | doc: /* Check text from START to END for property PROPERTY equalling VALUE. |
1695 | If so, return the position of the first character whose property PROPERTY | |
1696 | is `eq' to VALUE. Otherwise return nil. | |
81f6e55f FP |
1697 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1698 | the current buffer), START and END are buffer positions (integers or | |
1699 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
8c1a1077 PJ |
1700 | (start, end, property, value, object) |
1701 | Lisp_Object start, end, property, value, object; | |
ad9c1940 JB |
1702 | { |
1703 | register INTERVAL i; | |
1704 | register int e, pos; | |
1705 | ||
1706 | if (NILP (object)) | |
c8a4fc3d | 1707 | XSETBUFFER (object, current_buffer); |
ad9c1940 | 1708 | i = validate_interval_range (object, &start, &end, soft); |
2084fddb KH |
1709 | if (NULL_INTERVAL_P (i)) |
1710 | return (!NILP (value) || EQ (start, end) ? Qnil : start); | |
ad9c1940 JB |
1711 | e = XINT (end); |
1712 | ||
1713 | while (! NULL_INTERVAL_P (i)) | |
1714 | { | |
1715 | if (i->position >= e) | |
1716 | break; | |
1f5e848a | 1717 | if (EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1718 | { |
1719 | pos = i->position; | |
1720 | if (pos < XINT (start)) | |
1721 | pos = XINT (start); | |
ad077db0 | 1722 | return make_number (pos); |
ad9c1940 JB |
1723 | } |
1724 | i = next_interval (i); | |
1725 | } | |
1726 | return Qnil; | |
1727 | } | |
1728 | ||
1729 | DEFUN ("text-property-not-all", Ftext_property_not_all, | |
1730 | Stext_property_not_all, 4, 5, 0, | |
8c1a1077 PJ |
1731 | doc: /* Check text from START to END for property PROPERTY not equalling VALUE. |
1732 | If so, return the position of the first character whose property PROPERTY | |
1733 | is not `eq' to VALUE. Otherwise, return nil. | |
81f6e55f FP |
1734 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1735 | the current buffer), START and END are buffer positions (integers or | |
1736 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
8c1a1077 PJ |
1737 | (start, end, property, value, object) |
1738 | Lisp_Object start, end, property, value, object; | |
ad9c1940 JB |
1739 | { |
1740 | register INTERVAL i; | |
1741 | register int s, e; | |
1742 | ||
1743 | if (NILP (object)) | |
c8a4fc3d | 1744 | XSETBUFFER (object, current_buffer); |
ad9c1940 JB |
1745 | i = validate_interval_range (object, &start, &end, soft); |
1746 | if (NULL_INTERVAL_P (i)) | |
916a3119 | 1747 | return (NILP (value) || EQ (start, end)) ? Qnil : start; |
ad9c1940 JB |
1748 | s = XINT (start); |
1749 | e = XINT (end); | |
1750 | ||
1751 | while (! NULL_INTERVAL_P (i)) | |
1752 | { | |
1753 | if (i->position >= e) | |
1754 | break; | |
1f5e848a | 1755 | if (! EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1756 | { |
1757 | if (i->position > s) | |
1758 | s = i->position; | |
ad077db0 | 1759 | return make_number (s); |
ad9c1940 JB |
1760 | } |
1761 | i = next_interval (i); | |
1762 | } | |
1763 | return Qnil; | |
1764 | } | |
e138dfdc MB |
1765 | |
1766 | \f | |
1767 | /* Return the direction from which the text-property PROP would be | |
1768 | inherited by any new text inserted at POS: 1 if it would be | |
1769 | inherited from the char after POS, -1 if it would be inherited from | |
6f716644 SM |
1770 | the char before POS, and 0 if from neither. |
1771 | BUFFER can be either a buffer or nil (meaning current buffer). */ | |
e138dfdc MB |
1772 | |
1773 | int | |
6f716644 SM |
1774 | text_property_stickiness (prop, pos, buffer) |
1775 | Lisp_Object prop, pos, buffer; | |
e138dfdc MB |
1776 | { |
1777 | Lisp_Object prev_pos, front_sticky; | |
1778 | int is_rear_sticky = 1, is_front_sticky = 0; /* defaults */ | |
1779 | ||
6f716644 SM |
1780 | if (NILP (buffer)) |
1781 | XSETBUFFER (buffer, current_buffer); | |
1782 | ||
1783 | if (XINT (pos) > BUF_BEGV (XBUFFER (buffer))) | |
e138dfdc MB |
1784 | /* Consider previous character. */ |
1785 | { | |
1786 | Lisp_Object rear_non_sticky; | |
1787 | ||
1788 | prev_pos = make_number (XINT (pos) - 1); | |
6f716644 | 1789 | rear_non_sticky = Fget_text_property (prev_pos, Qrear_nonsticky, buffer); |
e138dfdc MB |
1790 | |
1791 | if (!NILP (CONSP (rear_non_sticky) | |
1792 | ? Fmemq (prop, rear_non_sticky) | |
1793 | : rear_non_sticky)) | |
1794 | /* PROP is rear-non-sticky. */ | |
1795 | is_rear_sticky = 0; | |
1796 | } | |
506d2f9a CY |
1797 | else |
1798 | return 0; | |
e138dfdc MB |
1799 | |
1800 | /* Consider following character. */ | |
506d2f9a CY |
1801 | /* This signals an arg-out-of-range error if pos is outside the |
1802 | buffer's accessible range. */ | |
6f716644 | 1803 | front_sticky = Fget_text_property (pos, Qfront_sticky, buffer); |
e138dfdc MB |
1804 | |
1805 | if (EQ (front_sticky, Qt) | |
1806 | || (CONSP (front_sticky) | |
1807 | && !NILP (Fmemq (prop, front_sticky)))) | |
1808 | /* PROP is inherited from after. */ | |
1809 | is_front_sticky = 1; | |
1810 | ||
1811 | /* Simple cases, where the properties are consistent. */ | |
1812 | if (is_rear_sticky && !is_front_sticky) | |
1813 | return -1; | |
1814 | else if (!is_rear_sticky && is_front_sticky) | |
1815 | return 1; | |
1816 | else if (!is_rear_sticky && !is_front_sticky) | |
1817 | return 0; | |
1818 | ||
1819 | /* The stickiness properties are inconsistent, so we have to | |
1820 | disambiguate. Basically, rear-sticky wins, _except_ if the | |
1821 | property that would be inherited has a value of nil, in which case | |
1822 | front-sticky wins. */ | |
6f716644 SM |
1823 | if (XINT (pos) == BUF_BEGV (XBUFFER (buffer)) |
1824 | || NILP (Fget_text_property (prev_pos, prop, buffer))) | |
e138dfdc MB |
1825 | return 1; |
1826 | else | |
1827 | return -1; | |
1828 | } | |
1829 | ||
fcab51aa | 1830 | \f |
15e4954b JB |
1831 | /* I don't think this is the right interface to export; how often do you |
1832 | want to do something like this, other than when you're copying objects | |
1833 | around? | |
1834 | ||
1835 | I think it would be better to have a pair of functions, one which | |
1836 | returns the text properties of a region as a list of ranges and | |
1837 | plists, and another which applies such a list to another object. */ | |
1838 | ||
c98da214 RS |
1839 | /* Add properties from SRC to SRC of SRC, starting at POS in DEST. |
1840 | SRC and DEST may each refer to strings or buffers. | |
1841 | Optional sixth argument PROP causes only that property to be copied. | |
1842 | Properties are copied to DEST as if by `add-text-properties'. | |
1843 | Return t if any property value actually changed, nil otherwise. */ | |
1844 | ||
1845 | /* Note this can GC when DEST is a buffer. */ | |
ad077db0 | 1846 | |
15e4954b JB |
1847 | Lisp_Object |
1848 | copy_text_properties (start, end, src, pos, dest, prop) | |
1849 | Lisp_Object start, end, src, pos, dest, prop; | |
1850 | { | |
1851 | INTERVAL i; | |
1852 | Lisp_Object res; | |
1853 | Lisp_Object stuff; | |
1854 | Lisp_Object plist; | |
1855 | int s, e, e2, p, len, modified = 0; | |
c98da214 | 1856 | struct gcpro gcpro1, gcpro2; |
15e4954b JB |
1857 | |
1858 | i = validate_interval_range (src, &start, &end, soft); | |
1859 | if (NULL_INTERVAL_P (i)) | |
1860 | return Qnil; | |
1861 | ||
b7826503 | 1862 | CHECK_NUMBER_COERCE_MARKER (pos); |
15e4954b JB |
1863 | { |
1864 | Lisp_Object dest_start, dest_end; | |
1865 | ||
1866 | dest_start = pos; | |
e9c4fbcd | 1867 | XSETFASTINT (dest_end, XINT (dest_start) + (XINT (end) - XINT (start))); |
15e4954b JB |
1868 | /* Apply this to a copy of pos; it will try to increment its arguments, |
1869 | which we don't want. */ | |
1870 | validate_interval_range (dest, &dest_start, &dest_end, soft); | |
1871 | } | |
1872 | ||
1873 | s = XINT (start); | |
1874 | e = XINT (end); | |
1875 | p = XINT (pos); | |
1876 | ||
1877 | stuff = Qnil; | |
1878 | ||
1879 | while (s < e) | |
1880 | { | |
1881 | e2 = i->position + LENGTH (i); | |
1882 | if (e2 > e) | |
1883 | e2 = e; | |
1884 | len = e2 - s; | |
1885 | ||
1886 | plist = i->plist; | |
1887 | if (! NILP (prop)) | |
1888 | while (! NILP (plist)) | |
1889 | { | |
1890 | if (EQ (Fcar (plist), prop)) | |
1891 | { | |
1892 | plist = Fcons (prop, Fcons (Fcar (Fcdr (plist)), Qnil)); | |
1893 | break; | |
1894 | } | |
1895 | plist = Fcdr (Fcdr (plist)); | |
1896 | } | |
1897 | if (! NILP (plist)) | |
1898 | { | |
1899 | /* Must defer modifications to the interval tree in case src | |
cdf3e5a2 | 1900 | and dest refer to the same string or buffer. */ |
15e4954b JB |
1901 | stuff = Fcons (Fcons (make_number (p), |
1902 | Fcons (make_number (p + len), | |
1903 | Fcons (plist, Qnil))), | |
1904 | stuff); | |
1905 | } | |
1906 | ||
1907 | i = next_interval (i); | |
1908 | if (NULL_INTERVAL_P (i)) | |
1909 | break; | |
1910 | ||
1911 | p += len; | |
1912 | s = i->position; | |
1913 | } | |
1914 | ||
c98da214 RS |
1915 | GCPRO2 (stuff, dest); |
1916 | ||
15e4954b JB |
1917 | while (! NILP (stuff)) |
1918 | { | |
1919 | res = Fcar (stuff); | |
1920 | res = Fadd_text_properties (Fcar (res), Fcar (Fcdr (res)), | |
1921 | Fcar (Fcdr (Fcdr (res))), dest); | |
1922 | if (! NILP (res)) | |
1923 | modified++; | |
1924 | stuff = Fcdr (stuff); | |
1925 | } | |
1926 | ||
c98da214 RS |
1927 | UNGCPRO; |
1928 | ||
15e4954b JB |
1929 | return modified ? Qt : Qnil; |
1930 | } | |
9dd7eec6 GM |
1931 | |
1932 | ||
1933 | /* Return a list representing the text properties of OBJECT between | |
1934 | START and END. if PROP is non-nil, report only on that property. | |
1935 | Each result list element has the form (S E PLIST), where S and E | |
1936 | are positions in OBJECT and PLIST is a property list containing the | |
1937 | text properties of OBJECT between S and E. Value is nil if OBJECT | |
1938 | doesn't contain text properties between START and END. */ | |
1939 | ||
1940 | Lisp_Object | |
1941 | text_property_list (object, start, end, prop) | |
1942 | Lisp_Object object, start, end, prop; | |
1943 | { | |
1944 | struct interval *i; | |
1945 | Lisp_Object result; | |
9dd7eec6 GM |
1946 | |
1947 | result = Qnil; | |
81f6e55f | 1948 | |
9dd7eec6 GM |
1949 | i = validate_interval_range (object, &start, &end, soft); |
1950 | if (!NULL_INTERVAL_P (i)) | |
1951 | { | |
1952 | int s = XINT (start); | |
1953 | int e = XINT (end); | |
81f6e55f | 1954 | |
9dd7eec6 GM |
1955 | while (s < e) |
1956 | { | |
1957 | int interval_end, len; | |
1958 | Lisp_Object plist; | |
81f6e55f | 1959 | |
9dd7eec6 GM |
1960 | interval_end = i->position + LENGTH (i); |
1961 | if (interval_end > e) | |
1962 | interval_end = e; | |
1963 | len = interval_end - s; | |
81f6e55f | 1964 | |
9dd7eec6 GM |
1965 | plist = i->plist; |
1966 | ||
1967 | if (!NILP (prop)) | |
1968 | for (; !NILP (plist); plist = Fcdr (Fcdr (plist))) | |
1969 | if (EQ (Fcar (plist), prop)) | |
1970 | { | |
1971 | plist = Fcons (prop, Fcons (Fcar (Fcdr (plist)), Qnil)); | |
1972 | break; | |
1973 | } | |
1974 | ||
1975 | if (!NILP (plist)) | |
1976 | result = Fcons (Fcons (make_number (s), | |
1977 | Fcons (make_number (s + len), | |
1978 | Fcons (plist, Qnil))), | |
1979 | result); | |
81f6e55f | 1980 | |
9dd7eec6 GM |
1981 | i = next_interval (i); |
1982 | if (NULL_INTERVAL_P (i)) | |
1983 | break; | |
1984 | s = i->position; | |
1985 | } | |
1986 | } | |
81f6e55f | 1987 | |
9dd7eec6 GM |
1988 | return result; |
1989 | } | |
1990 | ||
1991 | ||
1992 | /* Add text properties to OBJECT from LIST. LIST is a list of triples | |
1993 | (START END PLIST), where START and END are positions and PLIST is a | |
1994 | property list containing the text properties to add. Adjust START | |
1995 | and END positions by DELTA before adding properties. Value is | |
1996 | non-zero if OBJECT was modified. */ | |
1997 | ||
1998 | int | |
1999 | add_text_properties_from_list (object, list, delta) | |
2000 | Lisp_Object object, list, delta; | |
2001 | { | |
2002 | struct gcpro gcpro1, gcpro2; | |
2003 | int modified_p = 0; | |
81f6e55f | 2004 | |
9dd7eec6 | 2005 | GCPRO2 (list, object); |
81f6e55f | 2006 | |
9dd7eec6 GM |
2007 | for (; CONSP (list); list = XCDR (list)) |
2008 | { | |
2009 | Lisp_Object item, start, end, plist, tem; | |
81f6e55f | 2010 | |
9dd7eec6 GM |
2011 | item = XCAR (list); |
2012 | start = make_number (XINT (XCAR (item)) + XINT (delta)); | |
2013 | end = make_number (XINT (XCAR (XCDR (item))) + XINT (delta)); | |
2014 | plist = XCAR (XCDR (XCDR (item))); | |
81f6e55f | 2015 | |
9dd7eec6 GM |
2016 | tem = Fadd_text_properties (start, end, plist, object); |
2017 | if (!NILP (tem)) | |
2018 | modified_p = 1; | |
2019 | } | |
2020 | ||
2021 | UNGCPRO; | |
2022 | return modified_p; | |
2023 | } | |
2024 | ||
2025 | ||
2026 | ||
2027 | /* Modify end-points of ranges in LIST destructively. LIST is a list | |
2028 | as returned from text_property_list. Change end-points equal to | |
2029 | OLD_END to NEW_END. */ | |
2030 | ||
2031 | void | |
2032 | extend_property_ranges (list, old_end, new_end) | |
2033 | Lisp_Object list, old_end, new_end; | |
2034 | { | |
2035 | for (; CONSP (list); list = XCDR (list)) | |
2036 | { | |
2037 | Lisp_Object item, end; | |
81f6e55f | 2038 | |
9dd7eec6 GM |
2039 | item = XCAR (list); |
2040 | end = XCAR (XCDR (item)); | |
2041 | ||
2042 | if (EQ (end, old_end)) | |
f3fbd155 | 2043 | XSETCAR (XCDR (item), new_end); |
9dd7eec6 GM |
2044 | } |
2045 | } | |
2046 | ||
2047 | ||
318d2fa8 RS |
2048 | \f |
2049 | /* Call the modification hook functions in LIST, each with START and END. */ | |
2050 | ||
2051 | static void | |
2052 | call_mod_hooks (list, start, end) | |
2053 | Lisp_Object list, start, end; | |
2054 | { | |
2055 | struct gcpro gcpro1; | |
2056 | GCPRO1 (list); | |
2057 | while (!NILP (list)) | |
2058 | { | |
2059 | call2 (Fcar (list), start, end); | |
2060 | list = Fcdr (list); | |
2061 | } | |
2062 | UNGCPRO; | |
2063 | } | |
2064 | ||
96f90544 RS |
2065 | /* Check for read-only intervals between character positions START ... END, |
2066 | in BUF, and signal an error if we find one. | |
2067 | ||
2068 | Then check for any modification hooks in the range. | |
2069 | Create a list of all these hooks in lexicographic order, | |
2070 | eliminating consecutive extra copies of the same hook. Then call | |
2071 | those hooks in order, with START and END - 1 as arguments. */ | |
15e4954b | 2072 | |
318d2fa8 RS |
2073 | void |
2074 | verify_interval_modification (buf, start, end) | |
2075 | struct buffer *buf; | |
2076 | int start, end; | |
2077 | { | |
2078 | register INTERVAL intervals = BUF_INTERVALS (buf); | |
695f302f | 2079 | register INTERVAL i; |
318d2fa8 RS |
2080 | Lisp_Object hooks; |
2081 | register Lisp_Object prev_mod_hooks; | |
2082 | Lisp_Object mod_hooks; | |
2083 | struct gcpro gcpro1; | |
2084 | ||
2085 | hooks = Qnil; | |
2086 | prev_mod_hooks = Qnil; | |
2087 | mod_hooks = Qnil; | |
2088 | ||
2089 | interval_insert_behind_hooks = Qnil; | |
2090 | interval_insert_in_front_hooks = Qnil; | |
2091 | ||
2092 | if (NULL_INTERVAL_P (intervals)) | |
2093 | return; | |
2094 | ||
2095 | if (start > end) | |
2096 | { | |
2097 | int temp = start; | |
2098 | start = end; | |
2099 | end = temp; | |
2100 | } | |
2101 | ||
2102 | /* For an insert operation, check the two chars around the position. */ | |
2103 | if (start == end) | |
2104 | { | |
7cb66899 | 2105 | INTERVAL prev = NULL; |
318d2fa8 RS |
2106 | Lisp_Object before, after; |
2107 | ||
2108 | /* Set I to the interval containing the char after START, | |
2109 | and PREV to the interval containing the char before START. | |
2110 | Either one may be null. They may be equal. */ | |
2111 | i = find_interval (intervals, start); | |
2112 | ||
2113 | if (start == BUF_BEGV (buf)) | |
2114 | prev = 0; | |
2115 | else if (i->position == start) | |
2116 | prev = previous_interval (i); | |
2117 | else if (i->position < start) | |
2118 | prev = i; | |
2119 | if (start == BUF_ZV (buf)) | |
2120 | i = 0; | |
2121 | ||
2122 | /* If Vinhibit_read_only is set and is not a list, we can | |
2123 | skip the read_only checks. */ | |
2124 | if (NILP (Vinhibit_read_only) || CONSP (Vinhibit_read_only)) | |
2125 | { | |
2126 | /* If I and PREV differ we need to check for the read-only | |
cdf3e5a2 | 2127 | property together with its stickiness. If either I or |
318d2fa8 RS |
2128 | PREV are 0, this check is all we need. |
2129 | We have to take special care, since read-only may be | |
2130 | indirectly defined via the category property. */ | |
2131 | if (i != prev) | |
2132 | { | |
2133 | if (! NULL_INTERVAL_P (i)) | |
2134 | { | |
2135 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2136 | |
318d2fa8 RS |
2137 | /* If interval I is read-only and read-only is |
2138 | front-sticky, inhibit insertion. | |
2139 | Check for read-only as well as category. */ | |
2140 | if (! NILP (after) | |
2141 | && NILP (Fmemq (after, Vinhibit_read_only))) | |
2142 | { | |
2143 | Lisp_Object tem; | |
2144 | ||
2145 | tem = textget (i->plist, Qfront_sticky); | |
2146 | if (TMEM (Qread_only, tem) | |
2147 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2148 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2149 | text_read_only (after); |
318d2fa8 RS |
2150 | } |
2151 | } | |
2152 | ||
2153 | if (! NULL_INTERVAL_P (prev)) | |
2154 | { | |
2155 | before = textget (prev->plist, Qread_only); | |
81f6e55f | 2156 | |
318d2fa8 RS |
2157 | /* If interval PREV is read-only and read-only isn't |
2158 | rear-nonsticky, inhibit insertion. | |
2159 | Check for read-only as well as category. */ | |
2160 | if (! NILP (before) | |
2161 | && NILP (Fmemq (before, Vinhibit_read_only))) | |
2162 | { | |
2163 | Lisp_Object tem; | |
2164 | ||
2165 | tem = textget (prev->plist, Qrear_nonsticky); | |
2166 | if (! TMEM (Qread_only, tem) | |
2167 | && (! NILP (Fplist_get (prev->plist,Qread_only)) | |
2168 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2169 | text_read_only (before); |
318d2fa8 RS |
2170 | } |
2171 | } | |
2172 | } | |
2173 | else if (! NULL_INTERVAL_P (i)) | |
2174 | { | |
2175 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2176 | |
318d2fa8 RS |
2177 | /* If interval I is read-only and read-only is |
2178 | front-sticky, inhibit insertion. | |
2179 | Check for read-only as well as category. */ | |
2180 | if (! NILP (after) && NILP (Fmemq (after, Vinhibit_read_only))) | |
2181 | { | |
2182 | Lisp_Object tem; | |
2183 | ||
2184 | tem = textget (i->plist, Qfront_sticky); | |
2185 | if (TMEM (Qread_only, tem) | |
2186 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2187 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2188 | text_read_only (after); |
318d2fa8 RS |
2189 | |
2190 | tem = textget (prev->plist, Qrear_nonsticky); | |
2191 | if (! TMEM (Qread_only, tem) | |
2192 | && (! NILP (Fplist_get (prev->plist, Qread_only)) | |
2193 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2194 | text_read_only (after); |
318d2fa8 RS |
2195 | } |
2196 | } | |
2197 | } | |
2198 | ||
2199 | /* Run both insert hooks (just once if they're the same). */ | |
2200 | if (!NULL_INTERVAL_P (prev)) | |
2201 | interval_insert_behind_hooks | |
2202 | = textget (prev->plist, Qinsert_behind_hooks); | |
2203 | if (!NULL_INTERVAL_P (i)) | |
2204 | interval_insert_in_front_hooks | |
2205 | = textget (i->plist, Qinsert_in_front_hooks); | |
2206 | } | |
0ba7995b | 2207 | else |
318d2fa8 RS |
2208 | { |
2209 | /* Loop over intervals on or next to START...END, | |
2210 | collecting their hooks. */ | |
2211 | ||
2212 | i = find_interval (intervals, start); | |
2213 | do | |
2214 | { | |
2215 | if (! INTERVAL_WRITABLE_P (i)) | |
bcf97349 | 2216 | text_read_only (textget (i->plist, Qread_only)); |
318d2fa8 | 2217 | |
0ba7995b | 2218 | if (!inhibit_modification_hooks) |
318d2fa8 | 2219 | { |
0ba7995b GM |
2220 | mod_hooks = textget (i->plist, Qmodification_hooks); |
2221 | if (! NILP (mod_hooks) && ! EQ (mod_hooks, prev_mod_hooks)) | |
2222 | { | |
2223 | hooks = Fcons (mod_hooks, hooks); | |
2224 | prev_mod_hooks = mod_hooks; | |
2225 | } | |
318d2fa8 RS |
2226 | } |
2227 | ||
2228 | i = next_interval (i); | |
2229 | } | |
2230 | /* Keep going thru the interval containing the char before END. */ | |
2231 | while (! NULL_INTERVAL_P (i) && i->position < end); | |
2232 | ||
0ba7995b | 2233 | if (!inhibit_modification_hooks) |
318d2fa8 | 2234 | { |
0ba7995b GM |
2235 | GCPRO1 (hooks); |
2236 | hooks = Fnreverse (hooks); | |
2237 | while (! EQ (hooks, Qnil)) | |
2238 | { | |
2239 | call_mod_hooks (Fcar (hooks), make_number (start), | |
2240 | make_number (end)); | |
2241 | hooks = Fcdr (hooks); | |
2242 | } | |
2243 | UNGCPRO; | |
318d2fa8 | 2244 | } |
318d2fa8 RS |
2245 | } |
2246 | } | |
2247 | ||
96f90544 | 2248 | /* Run the interval hooks for an insertion on character range START ... END. |
318d2fa8 RS |
2249 | verify_interval_modification chose which hooks to run; |
2250 | this function is called after the insertion happens | |
2251 | so it can indicate the range of inserted text. */ | |
2252 | ||
2253 | void | |
2254 | report_interval_modification (start, end) | |
2255 | Lisp_Object start, end; | |
2256 | { | |
2257 | if (! NILP (interval_insert_behind_hooks)) | |
2e34157c | 2258 | call_mod_hooks (interval_insert_behind_hooks, start, end); |
318d2fa8 RS |
2259 | if (! NILP (interval_insert_in_front_hooks) |
2260 | && ! EQ (interval_insert_in_front_hooks, | |
2261 | interval_insert_behind_hooks)) | |
2e34157c | 2262 | call_mod_hooks (interval_insert_in_front_hooks, start, end); |
318d2fa8 RS |
2263 | } |
2264 | \f | |
d418ef42 JA |
2265 | void |
2266 | syms_of_textprop () | |
2267 | { | |
ad1b2f20 | 2268 | DEFVAR_LISP ("default-text-properties", &Vdefault_text_properties, |
8c1a1077 PJ |
2269 | doc: /* Property-list used as default values. |
2270 | The value of a property in this list is seen as the value for every | |
2271 | character that does not have its own value for that property. */); | |
ad1b2f20 | 2272 | Vdefault_text_properties = Qnil; |
c7dd82a3 | 2273 | |
49d110a8 CW |
2274 | DEFVAR_LISP ("char-property-alias-alist", &Vchar_property_alias_alist, |
2275 | doc: /* Alist of alternative properties for properties without a value. | |
2276 | Each element should look like (PROPERTY ALTERNATIVE1 ALTERNATIVE2...). | |
2277 | If a piece of text has no direct value for a particular property, then | |
2278 | this alist is consulted. If that property appears in the alist, then | |
2279 | the first non-nil value from the associated alternative properties is | |
2280 | returned. */); | |
2281 | Vchar_property_alias_alist = Qnil; | |
2282 | ||
688a5a0f | 2283 | DEFVAR_LISP ("inhibit-point-motion-hooks", &Vinhibit_point_motion_hooks, |
8c1a1077 PJ |
2284 | doc: /* If non-nil, don't run `point-left' and `point-entered' text properties. |
2285 | This also inhibits the use of the `intangible' text property. */); | |
688a5a0f | 2286 | Vinhibit_point_motion_hooks = Qnil; |
318d2fa8 | 2287 | |
abc2f676 KH |
2288 | DEFVAR_LISP ("text-property-default-nonsticky", |
2289 | &Vtext_property_default_nonsticky, | |
8c1a1077 PJ |
2290 | doc: /* Alist of properties vs the corresponding non-stickinesses. |
2291 | Each element has the form (PROPERTY . NONSTICKINESS). | |
2292 | ||
2293 | If a character in a buffer has PROPERTY, new text inserted adjacent to | |
2294 | the character doesn't inherit PROPERTY if NONSTICKINESS is non-nil, | |
2295 | inherits it if NONSTICKINESS is nil. The front-sticky and | |
2296 | rear-nonsticky properties of the character overrides NONSTICKINESS. */); | |
98ebf860 SM |
2297 | /* Text property `syntax-table' should be nonsticky by default. */ |
2298 | Vtext_property_default_nonsticky | |
2299 | = Fcons (Fcons (intern ("syntax-table"), Qt), Qnil); | |
abc2f676 | 2300 | |
318d2fa8 RS |
2301 | staticpro (&interval_insert_behind_hooks); |
2302 | staticpro (&interval_insert_in_front_hooks); | |
2303 | interval_insert_behind_hooks = Qnil; | |
2304 | interval_insert_in_front_hooks = Qnil; | |
2305 | ||
81f6e55f | 2306 | |
d418ef42 JA |
2307 | /* Common attributes one might give text */ |
2308 | ||
2309 | staticpro (&Qforeground); | |
2310 | Qforeground = intern ("foreground"); | |
2311 | staticpro (&Qbackground); | |
2312 | Qbackground = intern ("background"); | |
2313 | staticpro (&Qfont); | |
2314 | Qfont = intern ("font"); | |
2315 | staticpro (&Qstipple); | |
2316 | Qstipple = intern ("stipple"); | |
2317 | staticpro (&Qunderline); | |
2318 | Qunderline = intern ("underline"); | |
2319 | staticpro (&Qread_only); | |
2320 | Qread_only = intern ("read-only"); | |
2321 | staticpro (&Qinvisible); | |
2322 | Qinvisible = intern ("invisible"); | |
46b4e741 KH |
2323 | staticpro (&Qintangible); |
2324 | Qintangible = intern ("intangible"); | |
dc70cea7 RS |
2325 | staticpro (&Qcategory); |
2326 | Qcategory = intern ("category"); | |
2327 | staticpro (&Qlocal_map); | |
2328 | Qlocal_map = intern ("local-map"); | |
19e1c426 RS |
2329 | staticpro (&Qfront_sticky); |
2330 | Qfront_sticky = intern ("front-sticky"); | |
2331 | staticpro (&Qrear_nonsticky); | |
2332 | Qrear_nonsticky = intern ("rear-nonsticky"); | |
69bb837e RS |
2333 | staticpro (&Qmouse_face); |
2334 | Qmouse_face = intern ("mouse-face"); | |
d418ef42 JA |
2335 | |
2336 | /* Properties that text might use to specify certain actions */ | |
2337 | ||
2338 | staticpro (&Qmouse_left); | |
2339 | Qmouse_left = intern ("mouse-left"); | |
2340 | staticpro (&Qmouse_entered); | |
2341 | Qmouse_entered = intern ("mouse-entered"); | |
2342 | staticpro (&Qpoint_left); | |
2343 | Qpoint_left = intern ("point-left"); | |
2344 | staticpro (&Qpoint_entered); | |
2345 | Qpoint_entered = intern ("point-entered"); | |
d418ef42 JA |
2346 | |
2347 | defsubr (&Stext_properties_at); | |
5fbe2a44 | 2348 | defsubr (&Sget_text_property); |
eb769fd7 | 2349 | defsubr (&Sget_char_property); |
97a1bc63 | 2350 | defsubr (&Sget_char_property_and_overlay); |
fcab51aa RS |
2351 | defsubr (&Snext_char_property_change); |
2352 | defsubr (&Sprevious_char_property_change); | |
b7e047fb MB |
2353 | defsubr (&Snext_single_char_property_change); |
2354 | defsubr (&Sprevious_single_char_property_change); | |
d418ef42 | 2355 | defsubr (&Snext_property_change); |
9c79dd1b | 2356 | defsubr (&Snext_single_property_change); |
d418ef42 | 2357 | defsubr (&Sprevious_property_change); |
9c79dd1b | 2358 | defsubr (&Sprevious_single_property_change); |
d418ef42 | 2359 | defsubr (&Sadd_text_properties); |
d4b530ad | 2360 | defsubr (&Sput_text_property); |
d418ef42 JA |
2361 | defsubr (&Sset_text_properties); |
2362 | defsubr (&Sremove_text_properties); | |
11713b6d | 2363 | defsubr (&Sremove_list_of_text_properties); |
ad9c1940 JB |
2364 | defsubr (&Stext_property_any); |
2365 | defsubr (&Stext_property_not_all); | |
5fbe2a44 | 2366 | /* defsubr (&Serase_text_properties); */ |
15e4954b | 2367 | /* defsubr (&Scopy_text_properties); */ |
d418ef42 | 2368 | } |
ab5796a9 MB |
2369 | |
2370 | /* arch-tag: 454cdde8-5f86-4faa-a078-101e3625d479 | |
2371 | (do not change this comment) */ |