Commit | Line | Data |
---|---|---|
d418ef42 | 1 | /* Interface code for dealing with text properties. |
73b0cd50 | 2 | Copyright (C) 1993-1995, 1997, 1999-2011 Free Software Foundation, Inc. |
d418ef42 JA |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
d418ef42 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
d418ef42 JA |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d418ef42 | 18 | |
18160b98 | 19 | #include <config.h> |
d7306fe6 | 20 | #include <setjmp.h> |
d418ef42 JA |
21 | #include "lisp.h" |
22 | #include "intervals.h" | |
23 | #include "buffer.h" | |
f5957179 | 24 | #include "window.h" |
59a486ab RS |
25 | |
26 | #ifndef NULL | |
27 | #define NULL (void *)0 | |
28 | #endif | |
318d2fa8 RS |
29 | |
30 | /* Test for membership, allowing for t (actually any non-cons) to mean the | |
31 | universal set. */ | |
32 | ||
33 | #define TMEM(sym, set) (CONSP (set) ? ! NILP (Fmemq (sym, set)) : ! NILP (set)) | |
d418ef42 JA |
34 | \f |
35 | ||
36 | /* NOTES: previous- and next- property change will have to skip | |
37 | zero-length intervals if they are implemented. This could be done | |
38 | inside next_interval and previous_interval. | |
39 | ||
9c79dd1b JA |
40 | set_properties needs to deal with the interval property cache. |
41 | ||
d418ef42 | 42 | It is assumed that for any interval plist, a property appears |
d4b530ad | 43 | only once on the list. Although some code i.e., remove_properties, |
d418ef42 | 44 | handles the more general case, the uniqueness of properties is |
eb8c3be9 | 45 | necessary for the system to remain consistent. This requirement |
cdf3e5a2 | 46 | is enforced by the subrs installing properties onto the intervals. */ |
d418ef42 JA |
47 | |
48 | \f | |
cdf3e5a2 | 49 | /* Types of hooks. */ |
955cbe7b PE |
50 | static Lisp_Object Qmouse_left; |
51 | static Lisp_Object Qmouse_entered; | |
d418ef42 JA |
52 | Lisp_Object Qpoint_left; |
53 | Lisp_Object Qpoint_entered; | |
dc70cea7 RS |
54 | Lisp_Object Qcategory; |
55 | Lisp_Object Qlocal_map; | |
d418ef42 | 56 | |
cdf3e5a2 | 57 | /* Visual properties text (including strings) may have. */ |
955cbe7b PE |
58 | static Lisp_Object Qforeground, Qbackground, Qunderline; |
59 | Lisp_Object Qfont; | |
60 | static Lisp_Object Qstipple; | |
61 | Lisp_Object Qinvisible, Qintangible, Qmouse_face; | |
62 | static Lisp_Object Qread_only; | |
54b33868 | 63 | Lisp_Object Qminibuffer_prompt; |
19e1c426 RS |
64 | |
65 | /* Sticky properties */ | |
66 | Lisp_Object Qfront_sticky, Qrear_nonsticky; | |
d7b4e137 JB |
67 | |
68 | /* If o1 is a cons whose cdr is a cons, return non-zero and set o2 to | |
69 | the o1's cdr. Otherwise, return zero. This is handy for | |
70 | traversing plists. */ | |
70949dac | 71 | #define PLIST_ELT_P(o1, o2) (CONSP (o1) && ((o2)=XCDR (o1), CONSP (o2))) |
d7b4e137 | 72 | |
318d2fa8 RS |
73 | /* verify_interval_modification saves insertion hooks here |
74 | to be run later by report_interval_modification. */ | |
75 | Lisp_Object interval_insert_behind_hooks; | |
76 | Lisp_Object interval_insert_in_front_hooks; | |
7cb66899 | 77 | |
f57e2426 | 78 | static void text_read_only (Lisp_Object) NO_RETURN; |
16a97296 | 79 | INFUN (Fprevious_property_change, 3); |
2381d38d | 80 | |
7cb66899 GM |
81 | |
82 | /* Signal a `text-read-only' error. This function makes it easier | |
83 | to capture that error in GDB by putting a breakpoint on it. */ | |
84 | ||
85 | static void | |
971de7fb | 86 | text_read_only (Lisp_Object propval) |
7cb66899 | 87 | { |
d0a29e1d KS |
88 | if (STRINGP (propval)) |
89 | xsignal1 (Qtext_read_only, propval); | |
90 | ||
91 | xsignal0 (Qtext_read_only); | |
7cb66899 GM |
92 | } |
93 | ||
94 | ||
d418ef42 | 95 | \f |
ac876a79 JA |
96 | /* Extract the interval at the position pointed to by BEGIN from |
97 | OBJECT, a string or buffer. Additionally, check that the positions | |
98 | pointed to by BEGIN and END are within the bounds of OBJECT, and | |
99 | reverse them if *BEGIN is greater than *END. The objects pointed | |
100 | to by BEGIN and END may be integers or markers; if the latter, they | |
101 | are coerced to integers. | |
d418ef42 | 102 | |
d4b530ad RS |
103 | When OBJECT is a string, we increment *BEGIN and *END |
104 | to make them origin-one. | |
105 | ||
d418ef42 JA |
106 | Note that buffer points don't correspond to interval indices. |
107 | For example, point-max is 1 greater than the index of the last | |
108 | character. This difference is handled in the caller, which uses | |
109 | the validated points to determine a length, and operates on that. | |
110 | Exceptions are Ftext_properties_at, Fnext_property_change, and | |
111 | Fprevious_property_change which call this function with BEGIN == END. | |
112 | Handle this case specially. | |
113 | ||
114 | If FORCE is soft (0), it's OK to return NULL_INTERVAL. Otherwise, | |
ac876a79 JA |
115 | create an interval tree for OBJECT if one doesn't exist, provided |
116 | the object actually contains text. In the current design, if there | |
d4b530ad | 117 | is no text, there can be no text properties. */ |
d418ef42 JA |
118 | |
119 | #define soft 0 | |
120 | #define hard 1 | |
121 | ||
9dd7eec6 | 122 | INTERVAL |
971de7fb | 123 | validate_interval_range (Lisp_Object object, Lisp_Object *begin, Lisp_Object *end, int force) |
d418ef42 JA |
124 | { |
125 | register INTERVAL i; | |
2452438f | 126 | EMACS_INT searchpos; |
d4b530ad | 127 | |
b7826503 PJ |
128 | CHECK_STRING_OR_BUFFER (object); |
129 | CHECK_NUMBER_COERCE_MARKER (*begin); | |
130 | CHECK_NUMBER_COERCE_MARKER (*end); | |
d418ef42 JA |
131 | |
132 | /* If we are asked for a point, but from a subr which operates | |
cdf3e5a2 | 133 | on a range, then return nothing. */ |
64a49ca7 | 134 | if (EQ (*begin, *end) && begin != end) |
d418ef42 JA |
135 | return NULL_INTERVAL; |
136 | ||
137 | if (XINT (*begin) > XINT (*end)) | |
138 | { | |
d4b530ad RS |
139 | Lisp_Object n; |
140 | n = *begin; | |
d418ef42 | 141 | *begin = *end; |
d4b530ad | 142 | *end = n; |
d418ef42 JA |
143 | } |
144 | ||
5d2fa46f | 145 | if (BUFFERP (object)) |
d418ef42 JA |
146 | { |
147 | register struct buffer *b = XBUFFER (object); | |
148 | ||
d418ef42 JA |
149 | if (!(BUF_BEGV (b) <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
150 | && XINT (*end) <= BUF_ZV (b))) | |
151 | args_out_of_range (*begin, *end); | |
866bf246 | 152 | i = BUF_INTERVALS (b); |
d418ef42 | 153 | |
cdf3e5a2 | 154 | /* If there's no text, there are no properties. */ |
d4b530ad RS |
155 | if (BUF_BEGV (b) == BUF_ZV (b)) |
156 | return NULL_INTERVAL; | |
157 | ||
158 | searchpos = XINT (*begin); | |
d418ef42 JA |
159 | } |
160 | else | |
161 | { | |
2452438f | 162 | EMACS_INT len = SCHARS (object); |
d418ef42 | 163 | |
d4b530ad | 164 | if (! (0 <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
943afcc7 | 165 | && XINT (*end) <= len)) |
d418ef42 | 166 | args_out_of_range (*begin, *end); |
ad077db0 | 167 | XSETFASTINT (*begin, XFASTINT (*begin)); |
b1e94638 | 168 | if (begin != end) |
ad077db0 | 169 | XSETFASTINT (*end, XFASTINT (*end)); |
943afcc7 | 170 | i = STRING_INTERVALS (object); |
d4b530ad | 171 | |
943afcc7 | 172 | if (len == 0) |
d4b530ad RS |
173 | return NULL_INTERVAL; |
174 | ||
175 | searchpos = XINT (*begin); | |
d418ef42 JA |
176 | } |
177 | ||
178 | if (NULL_INTERVAL_P (i)) | |
179 | return (force ? create_root_interval (object) : i); | |
81f6e55f | 180 | |
d4b530ad | 181 | return find_interval (i, searchpos); |
d418ef42 JA |
182 | } |
183 | ||
184 | /* Validate LIST as a property list. If LIST is not a list, then | |
185 | make one consisting of (LIST nil). Otherwise, verify that LIST | |
cdf3e5a2 | 186 | is even numbered and thus suitable as a plist. */ |
d418ef42 JA |
187 | |
188 | static Lisp_Object | |
971de7fb | 189 | validate_plist (Lisp_Object list) |
d418ef42 JA |
190 | { |
191 | if (NILP (list)) | |
192 | return Qnil; | |
193 | ||
194 | if (CONSP (list)) | |
195 | { | |
196 | register int i; | |
197 | register Lisp_Object tail; | |
99784d63 | 198 | for (i = 0, tail = list; CONSP (tail); i++) |
b1e94638 | 199 | { |
99784d63 | 200 | tail = XCDR (tail); |
b1e94638 JB |
201 | QUIT; |
202 | } | |
d418ef42 JA |
203 | if (i & 1) |
204 | error ("Odd length text property list"); | |
205 | return list; | |
206 | } | |
207 | ||
208 | return Fcons (list, Fcons (Qnil, Qnil)); | |
209 | } | |
210 | ||
d418ef42 | 211 | /* Return nonzero if interval I has all the properties, |
cdf3e5a2 | 212 | with the same values, of list PLIST. */ |
d418ef42 JA |
213 | |
214 | static int | |
971de7fb | 215 | interval_has_all_properties (Lisp_Object plist, INTERVAL i) |
d418ef42 | 216 | { |
695f302f | 217 | register Lisp_Object tail1, tail2, sym1; |
d418ef42 JA |
218 | register int found; |
219 | ||
cdf3e5a2 | 220 | /* Go through each element of PLIST. */ |
99784d63 | 221 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 222 | { |
99784d63 | 223 | sym1 = XCAR (tail1); |
d418ef42 JA |
224 | found = 0; |
225 | ||
226 | /* Go through I's plist, looking for sym1 */ | |
99784d63 SM |
227 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
228 | if (EQ (sym1, XCAR (tail2))) | |
d418ef42 JA |
229 | { |
230 | /* Found the same property on both lists. If the | |
cdf3e5a2 | 231 | values are unequal, return zero. */ |
99784d63 | 232 | if (! EQ (Fcar (XCDR (tail1)), Fcar (XCDR (tail2)))) |
d418ef42 JA |
233 | return 0; |
234 | ||
cdf3e5a2 | 235 | /* Property has same value on both lists; go to next one. */ |
d418ef42 JA |
236 | found = 1; |
237 | break; | |
238 | } | |
239 | ||
240 | if (! found) | |
241 | return 0; | |
242 | } | |
243 | ||
244 | return 1; | |
245 | } | |
246 | ||
247 | /* Return nonzero if the plist of interval I has any of the | |
cdf3e5a2 | 248 | properties of PLIST, regardless of their values. */ |
d418ef42 JA |
249 | |
250 | static INLINE int | |
971de7fb | 251 | interval_has_some_properties (Lisp_Object plist, INTERVAL i) |
d418ef42 JA |
252 | { |
253 | register Lisp_Object tail1, tail2, sym; | |
254 | ||
cdf3e5a2 | 255 | /* Go through each element of PLIST. */ |
99784d63 | 256 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 257 | { |
99784d63 | 258 | sym = XCAR (tail1); |
d418ef42 JA |
259 | |
260 | /* Go through i's plist, looking for tail1 */ | |
99784d63 SM |
261 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
262 | if (EQ (sym, XCAR (tail2))) | |
d418ef42 JA |
263 | return 1; |
264 | } | |
265 | ||
266 | return 0; | |
267 | } | |
11713b6d RS |
268 | |
269 | /* Return nonzero if the plist of interval I has any of the | |
270 | property names in LIST, regardless of their values. */ | |
271 | ||
272 | static INLINE int | |
971de7fb | 273 | interval_has_some_properties_list (Lisp_Object list, INTERVAL i) |
11713b6d RS |
274 | { |
275 | register Lisp_Object tail1, tail2, sym; | |
276 | ||
277 | /* Go through each element of LIST. */ | |
99784d63 | 278 | for (tail1 = list; CONSP (tail1); tail1 = XCDR (tail1)) |
11713b6d RS |
279 | { |
280 | sym = Fcar (tail1); | |
281 | ||
282 | /* Go through i's plist, looking for tail1 */ | |
99784d63 | 283 | for (tail2 = i->plist; CONSP (tail2); tail2 = XCDR (XCDR (tail2))) |
11713b6d RS |
284 | if (EQ (sym, XCAR (tail2))) |
285 | return 1; | |
286 | } | |
287 | ||
288 | return 0; | |
289 | } | |
d4b530ad | 290 | \f |
d7b4e137 JB |
291 | /* Changing the plists of individual intervals. */ |
292 | ||
293 | /* Return the value of PROP in property-list PLIST, or Qunbound if it | |
294 | has none. */ | |
64a49ca7 | 295 | static Lisp_Object |
971de7fb | 296 | property_value (Lisp_Object plist, Lisp_Object prop) |
d7b4e137 JB |
297 | { |
298 | Lisp_Object value; | |
299 | ||
300 | while (PLIST_ELT_P (plist, value)) | |
70949dac KR |
301 | if (EQ (XCAR (plist), prop)) |
302 | return XCAR (value); | |
d7b4e137 | 303 | else |
70949dac | 304 | plist = XCDR (value); |
d7b4e137 JB |
305 | |
306 | return Qunbound; | |
307 | } | |
308 | ||
d4b530ad RS |
309 | /* Set the properties of INTERVAL to PROPERTIES, |
310 | and record undo info for the previous values. | |
311 | OBJECT is the string or buffer that INTERVAL belongs to. */ | |
312 | ||
313 | static void | |
971de7fb | 314 | set_properties (Lisp_Object properties, INTERVAL interval, Lisp_Object object) |
d4b530ad | 315 | { |
d7b4e137 | 316 | Lisp_Object sym, value; |
d4b530ad | 317 | |
d7b4e137 | 318 | if (BUFFERP (object)) |
d4b530ad | 319 | { |
d7b4e137 JB |
320 | /* For each property in the old plist which is missing from PROPERTIES, |
321 | or has a different value in PROPERTIES, make an undo record. */ | |
322 | for (sym = interval->plist; | |
323 | PLIST_ELT_P (sym, value); | |
70949dac KR |
324 | sym = XCDR (value)) |
325 | if (! EQ (property_value (properties, XCAR (sym)), | |
326 | XCAR (value))) | |
f7a9275a | 327 | { |
f7a9275a | 328 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 329 | XCAR (sym), XCAR (value), |
f7a9275a RS |
330 | object); |
331 | } | |
d7b4e137 JB |
332 | |
333 | /* For each new property that has no value at all in the old plist, | |
334 | make an undo record binding it to nil, so it will be removed. */ | |
335 | for (sym = properties; | |
336 | PLIST_ELT_P (sym, value); | |
70949dac KR |
337 | sym = XCDR (value)) |
338 | if (EQ (property_value (interval->plist, XCAR (sym)), Qunbound)) | |
f7a9275a | 339 | { |
f7a9275a | 340 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 341 | XCAR (sym), Qnil, |
f7a9275a RS |
342 | object); |
343 | } | |
d4b530ad RS |
344 | } |
345 | ||
346 | /* Store new properties. */ | |
347 | interval->plist = Fcopy_sequence (properties); | |
348 | } | |
d418ef42 JA |
349 | |
350 | /* Add the properties of PLIST to the interval I, or set | |
351 | the value of I's property to the value of the property on PLIST | |
352 | if they are different. | |
353 | ||
d4b530ad RS |
354 | OBJECT should be the string or buffer the interval is in. |
355 | ||
d418ef42 JA |
356 | Return nonzero if this changes I (i.e., if any members of PLIST |
357 | are actually added to I's plist) */ | |
358 | ||
d4b530ad | 359 | static int |
971de7fb | 360 | add_properties (Lisp_Object plist, INTERVAL i, Lisp_Object object) |
d418ef42 | 361 | { |
c98da214 | 362 | Lisp_Object tail1, tail2, sym1, val1; |
d418ef42 JA |
363 | register int changed = 0; |
364 | register int found; | |
c98da214 RS |
365 | struct gcpro gcpro1, gcpro2, gcpro3; |
366 | ||
367 | tail1 = plist; | |
368 | sym1 = Qnil; | |
369 | val1 = Qnil; | |
370 | /* No need to protect OBJECT, because we can GC only in the case | |
371 | where it is a buffer, and live buffers are always protected. | |
372 | I and its plist are also protected, via OBJECT. */ | |
373 | GCPRO3 (tail1, sym1, val1); | |
d418ef42 | 374 | |
cdf3e5a2 | 375 | /* Go through each element of PLIST. */ |
99784d63 | 376 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 377 | { |
99784d63 SM |
378 | sym1 = XCAR (tail1); |
379 | val1 = Fcar (XCDR (tail1)); | |
d418ef42 JA |
380 | found = 0; |
381 | ||
382 | /* Go through I's plist, looking for sym1 */ | |
99784d63 SM |
383 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
384 | if (EQ (sym1, XCAR (tail2))) | |
d418ef42 | 385 | { |
c98da214 RS |
386 | /* No need to gcpro, because tail2 protects this |
387 | and it must be a cons cell (we get an error otherwise). */ | |
3814ccf5 | 388 | register Lisp_Object this_cdr; |
d418ef42 | 389 | |
99784d63 | 390 | this_cdr = XCDR (tail2); |
cdf3e5a2 | 391 | /* Found the property. Now check its value. */ |
d418ef42 JA |
392 | found = 1; |
393 | ||
394 | /* The properties have the same value on both lists. | |
cdf3e5a2 | 395 | Continue to the next property. */ |
734c51b2 | 396 | if (EQ (val1, Fcar (this_cdr))) |
d418ef42 JA |
397 | break; |
398 | ||
d4b530ad | 399 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 400 | if (BUFFERP (object)) |
d4b530ad | 401 | { |
f7a9275a RS |
402 | record_property_change (i->position, LENGTH (i), |
403 | sym1, Fcar (this_cdr), object); | |
d4b530ad RS |
404 | } |
405 | ||
d418ef42 JA |
406 | /* I's property has a different value -- change it */ |
407 | Fsetcar (this_cdr, val1); | |
408 | changed++; | |
409 | break; | |
410 | } | |
411 | ||
412 | if (! found) | |
413 | { | |
d4b530ad | 414 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 415 | if (BUFFERP (object)) |
d4b530ad | 416 | { |
f7a9275a RS |
417 | record_property_change (i->position, LENGTH (i), |
418 | sym1, Qnil, object); | |
d4b530ad | 419 | } |
d418ef42 JA |
420 | i->plist = Fcons (sym1, Fcons (val1, i->plist)); |
421 | changed++; | |
422 | } | |
423 | } | |
424 | ||
c98da214 RS |
425 | UNGCPRO; |
426 | ||
d418ef42 JA |
427 | return changed; |
428 | } | |
429 | ||
11713b6d RS |
430 | /* For any members of PLIST, or LIST, |
431 | which are properties of I, remove them from I's plist. | |
432 | (If PLIST is non-nil, use that, otherwise use LIST.) | |
d4b530ad | 433 | OBJECT is the string or buffer containing I. */ |
d418ef42 | 434 | |
d4b530ad | 435 | static int |
971de7fb | 436 | remove_properties (Lisp_Object plist, Lisp_Object list, INTERVAL i, Lisp_Object object) |
d418ef42 | 437 | { |
3814ccf5 | 438 | register Lisp_Object tail1, tail2, sym, current_plist; |
d418ef42 JA |
439 | register int changed = 0; |
440 | ||
f25d60d6 KS |
441 | /* Nonzero means tail1 is a plist, otherwise it is a list. */ |
442 | int use_plist; | |
11713b6d | 443 | |
3814ccf5 | 444 | current_plist = i->plist; |
11713b6d RS |
445 | |
446 | if (! NILP (plist)) | |
f25d60d6 | 447 | tail1 = plist, use_plist = 1; |
11713b6d | 448 | else |
f25d60d6 | 449 | tail1 = list, use_plist = 0; |
11713b6d RS |
450 | |
451 | /* Go through each element of LIST or PLIST. */ | |
b079118d | 452 | while (CONSP (tail1)) |
d418ef42 | 453 | { |
11713b6d | 454 | sym = XCAR (tail1); |
d418ef42 | 455 | |
11713b6d | 456 | /* First, remove the symbol if it's at the head of the list */ |
b079118d | 457 | while (CONSP (current_plist) && EQ (sym, XCAR (current_plist))) |
d418ef42 | 458 | { |
5d2fa46f | 459 | if (BUFFERP (object)) |
11713b6d RS |
460 | record_property_change (i->position, LENGTH (i), |
461 | sym, XCAR (XCDR (current_plist)), | |
462 | object); | |
d4b530ad | 463 | |
11713b6d | 464 | current_plist = XCDR (XCDR (current_plist)); |
d418ef42 JA |
465 | changed++; |
466 | } | |
467 | ||
11713b6d | 468 | /* Go through I's plist, looking for SYM. */ |
d418ef42 JA |
469 | tail2 = current_plist; |
470 | while (! NILP (tail2)) | |
471 | { | |
3814ccf5 | 472 | register Lisp_Object this; |
11713b6d | 473 | this = XCDR (XCDR (tail2)); |
b079118d | 474 | if (CONSP (this) && EQ (sym, XCAR (this))) |
d418ef42 | 475 | { |
5d2fa46f | 476 | if (BUFFERP (object)) |
11713b6d RS |
477 | record_property_change (i->position, LENGTH (i), |
478 | sym, XCAR (XCDR (this)), object); | |
d4b530ad | 479 | |
11713b6d | 480 | Fsetcdr (XCDR (tail2), XCDR (XCDR (this))); |
d418ef42 JA |
481 | changed++; |
482 | } | |
483 | tail2 = this; | |
484 | } | |
11713b6d RS |
485 | |
486 | /* Advance thru TAIL1 one way or the other. */ | |
f25d60d6 KS |
487 | tail1 = XCDR (tail1); |
488 | if (use_plist && CONSP (tail1)) | |
11713b6d | 489 | tail1 = XCDR (tail1); |
d418ef42 JA |
490 | } |
491 | ||
492 | if (changed) | |
493 | i->plist = current_plist; | |
494 | return changed; | |
495 | } | |
496 | ||
d4b530ad | 497 | #if 0 |
d418ef42 | 498 | /* Remove all properties from interval I. Return non-zero |
cdf3e5a2 | 499 | if this changes the interval. */ |
d418ef42 JA |
500 | |
501 | static INLINE int | |
59fc5cf9 | 502 | erase_properties (INTERVAL i) |
d418ef42 JA |
503 | { |
504 | if (NILP (i->plist)) | |
505 | return 0; | |
506 | ||
507 | i->plist = Qnil; | |
508 | return 1; | |
509 | } | |
d4b530ad | 510 | #endif |
d418ef42 | 511 | \f |
81f6e55f | 512 | /* Returns the interval of POSITION in OBJECT. |
cdf3e5a2 RS |
513 | POSITION is BEG-based. */ |
514 | ||
515 | INTERVAL | |
971de7fb | 516 | interval_of (int position, Lisp_Object object) |
cdf3e5a2 RS |
517 | { |
518 | register INTERVAL i; | |
2452438f | 519 | EMACS_INT beg, end; |
cdf3e5a2 RS |
520 | |
521 | if (NILP (object)) | |
522 | XSETBUFFER (object, current_buffer); | |
d0cb872a KH |
523 | else if (EQ (object, Qt)) |
524 | return NULL_INTERVAL; | |
cdf3e5a2 | 525 | |
b7826503 | 526 | CHECK_STRING_OR_BUFFER (object); |
cdf3e5a2 RS |
527 | |
528 | if (BUFFERP (object)) | |
529 | { | |
530 | register struct buffer *b = XBUFFER (object); | |
531 | ||
532 | beg = BUF_BEGV (b); | |
533 | end = BUF_ZV (b); | |
534 | i = BUF_INTERVALS (b); | |
535 | } | |
536 | else | |
537 | { | |
ad077db0 | 538 | beg = 0; |
943afcc7 KR |
539 | end = SCHARS (object); |
540 | i = STRING_INTERVALS (object); | |
cdf3e5a2 RS |
541 | } |
542 | ||
543 | if (!(beg <= position && position <= end)) | |
c7ef8e24 | 544 | args_out_of_range (make_number (position), make_number (position)); |
cdf3e5a2 RS |
545 | if (beg == end || NULL_INTERVAL_P (i)) |
546 | return NULL_INTERVAL; | |
81f6e55f | 547 | |
cdf3e5a2 RS |
548 | return find_interval (i, position); |
549 | } | |
550 | \f | |
16a97296 | 551 | DEFUE ("text-properties-at", Ftext_properties_at, |
d418ef42 | 552 | Stext_properties_at, 1, 2, 0, |
8c1a1077 | 553 | doc: /* Return the list of properties of the character at POSITION in OBJECT. |
81f6e55f FP |
554 | If the optional second argument OBJECT is a buffer (or nil, which means |
555 | the current buffer), POSITION is a buffer position (integer or marker). | |
556 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 | 557 | If POSITION is at the end of OBJECT, the value is nil. */) |
5842a27b | 558 | (Lisp_Object position, Lisp_Object object) |
d418ef42 JA |
559 | { |
560 | register INTERVAL i; | |
d418ef42 JA |
561 | |
562 | if (NILP (object)) | |
c8a4fc3d | 563 | XSETBUFFER (object, current_buffer); |
d418ef42 | 564 | |
1f5e848a | 565 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 JA |
566 | if (NULL_INTERVAL_P (i)) |
567 | return Qnil; | |
1f5e848a | 568 | /* If POSITION is at the end of the interval, |
d4b530ad RS |
569 | it means it's the end of OBJECT. |
570 | There are no properties at the very end, | |
571 | since no character follows. */ | |
1f5e848a | 572 | if (XINT (position) == LENGTH (i) + i->position) |
d4b530ad | 573 | return Qnil; |
d418ef42 JA |
574 | |
575 | return i->plist; | |
576 | } | |
577 | ||
16a97296 | 578 | DEFUE ("get-text-property", Fget_text_property, Sget_text_property, 2, 3, 0, |
8c1a1077 PJ |
579 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
580 | OBJECT is optional and defaults to the current buffer. | |
581 | If POSITION is at the end of OBJECT, the value is nil. */) | |
5842a27b | 582 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
5fbe2a44 | 583 | { |
1f5e848a | 584 | return textget (Ftext_properties_at (position, object), prop); |
5fbe2a44 RS |
585 | } |
586 | ||
bcf97349 | 587 | /* Return the value of char's property PROP, in OBJECT at POSITION. |
8d41abc4 MB |
588 | OBJECT is optional and defaults to the current buffer. |
589 | If OVERLAY is non-0, then in the case that the returned property is from | |
590 | an overlay, the overlay found is returned in *OVERLAY, otherwise nil is | |
591 | returned in *OVERLAY. | |
592 | If POSITION is at the end of OBJECT, the value is nil. | |
593 | If OBJECT is a buffer, then overlay properties are considered as well as | |
594 | text properties. | |
595 | If OBJECT is a window, then that window's buffer is used, but | |
596 | window-specific overlays are considered only if they are associated | |
597 | with OBJECT. */ | |
598 | Lisp_Object | |
971de7fb | 599 | get_char_property_and_overlay (Lisp_Object position, register Lisp_Object prop, Lisp_Object object, Lisp_Object *overlay) |
f5957179 KH |
600 | { |
601 | struct window *w = 0; | |
602 | ||
b7826503 | 603 | CHECK_NUMBER_COERCE_MARKER (position); |
f5957179 KH |
604 | |
605 | if (NILP (object)) | |
c8a4fc3d | 606 | XSETBUFFER (object, current_buffer); |
f5957179 KH |
607 | |
608 | if (WINDOWP (object)) | |
609 | { | |
610 | w = XWINDOW (object); | |
64a49ca7 | 611 | object = w->buffer; |
f5957179 KH |
612 | } |
613 | if (BUFFERP (object)) | |
614 | { | |
f5957179 | 615 | int noverlays; |
b5be4dbe | 616 | Lisp_Object *overlay_vec; |
cbc55f55 RS |
617 | struct buffer *obuf = current_buffer; |
618 | ||
dd6f2802 RS |
619 | if (XINT (position) < BUF_BEGV (XBUFFER (object)) |
620 | || XINT (position) > BUF_ZV (XBUFFER (object))) | |
621 | xsignal1 (Qargs_out_of_range, position); | |
622 | ||
cbc55f55 | 623 | set_buffer_temp (XBUFFER (object)); |
f5957179 | 624 | |
b5be4dbe | 625 | GET_OVERLAYS_AT (XINT (position), overlay_vec, noverlays, NULL, 0); |
f5957179 KH |
626 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
627 | ||
cbc55f55 RS |
628 | set_buffer_temp (obuf); |
629 | ||
f5957179 KH |
630 | /* Now check the overlays in order of decreasing priority. */ |
631 | while (--noverlays >= 0) | |
632 | { | |
b5be4dbe | 633 | Lisp_Object tem = Foverlay_get (overlay_vec[noverlays], prop); |
f5957179 | 634 | if (!NILP (tem)) |
8d41abc4 MB |
635 | { |
636 | if (overlay) | |
637 | /* Return the overlay we got the property from. */ | |
638 | *overlay = overlay_vec[noverlays]; | |
639 | return tem; | |
640 | } | |
f5957179 KH |
641 | } |
642 | } | |
8d41abc4 MB |
643 | |
644 | if (overlay) | |
645 | /* Indicate that the return value is not from an overlay. */ | |
646 | *overlay = Qnil; | |
647 | ||
f5957179 KH |
648 | /* Not a buffer, or no appropriate overlay, so fall through to the |
649 | simpler case. */ | |
8d41abc4 MB |
650 | return Fget_text_property (position, prop, object); |
651 | } | |
652 | ||
16a97296 | 653 | DEFUE ("get-char-property", Fget_char_property, Sget_char_property, 2, 3, 0, |
8c1a1077 | 654 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
8faef085 | 655 | Both overlay properties and text properties are checked. |
8c1a1077 PJ |
656 | OBJECT is optional and defaults to the current buffer. |
657 | If POSITION is at the end of OBJECT, the value is nil. | |
658 | If OBJECT is a buffer, then overlay properties are considered as well as | |
659 | text properties. | |
660 | If OBJECT is a window, then that window's buffer is used, but window-specific | |
661 | overlays are considered only if they are associated with OBJECT. */) | |
5842a27b | 662 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
8d41abc4 MB |
663 | { |
664 | return get_char_property_and_overlay (position, prop, object, 0); | |
f5957179 | 665 | } |
97a1bc63 LT |
666 | |
667 | DEFUN ("get-char-property-and-overlay", Fget_char_property_and_overlay, | |
668 | Sget_char_property_and_overlay, 2, 3, 0, | |
669 | doc: /* Like `get-char-property', but with extra overlay information. | |
95555145 RS |
670 | The value is a cons cell. Its car is the return value of `get-char-property' |
671 | with the same arguments--that is, the value of POSITION's property | |
672 | PROP in OBJECT. Its cdr is the overlay in which the property was | |
97a1bc63 | 673 | found, or nil, if it was found as a text property or not found at all. |
95555145 | 674 | |
97a1bc63 LT |
675 | OBJECT is optional and defaults to the current buffer. OBJECT may be |
676 | a string, a buffer or a window. For strings, the cdr of the return | |
677 | value is always nil, since strings do not have overlays. If OBJECT is | |
678 | a window, then that window's buffer is used, but window-specific | |
679 | overlays are considered only if they are associated with OBJECT. If | |
680 | POSITION is at the end of OBJECT, both car and cdr are nil. */) | |
5842a27b | 681 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
97a1bc63 LT |
682 | { |
683 | Lisp_Object overlay; | |
684 | Lisp_Object val | |
685 | = get_char_property_and_overlay (position, prop, object, &overlay); | |
6519d955 | 686 | return Fcons (val, overlay); |
97a1bc63 LT |
687 | } |
688 | ||
fcab51aa | 689 | \f |
16a97296 | 690 | DEFUE ("next-char-property-change", Fnext_char_property_change, |
fcab51aa | 691 | Snext_char_property_change, 1, 2, 0, |
8c1a1077 | 692 | doc: /* Return the position of next text property or overlay change. |
81f6e55f FP |
693 | This scans characters forward in the current buffer from POSITION till |
694 | it finds a change in some text property, or the beginning or end of an | |
695 | overlay, and returns the position of that. | |
85cc6738 | 696 | If none is found up to (point-max), the function returns (point-max). |
8c1a1077 | 697 | |
a41292c2 | 698 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
699 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
700 | LIMIT is a no-op if it is greater than (point-max). */) | |
5842a27b | 701 | (Lisp_Object position, Lisp_Object limit) |
fcab51aa RS |
702 | { |
703 | Lisp_Object temp; | |
704 | ||
705 | temp = Fnext_overlay_change (position); | |
706 | if (! NILP (limit)) | |
707 | { | |
d615870a | 708 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
709 | if (XINT (limit) < XINT (temp)) |
710 | temp = limit; | |
711 | } | |
712 | return Fnext_property_change (position, Qnil, temp); | |
713 | } | |
714 | ||
16a97296 | 715 | DEFUE ("previous-char-property-change", Fprevious_char_property_change, |
fcab51aa | 716 | Sprevious_char_property_change, 1, 2, 0, |
8c1a1077 | 717 | doc: /* Return the position of previous text property or overlay change. |
81f6e55f FP |
718 | Scans characters backward in the current buffer from POSITION till it |
719 | finds a change in some text property, or the beginning or end of an | |
720 | overlay, and returns the position of that. | |
85cc6738 | 721 | If none is found since (point-min), the function returns (point-min). |
8c1a1077 | 722 | |
a41292c2 | 723 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
724 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
725 | LIMIT is a no-op if it is less than (point-min). */) | |
5842a27b | 726 | (Lisp_Object position, Lisp_Object limit) |
fcab51aa RS |
727 | { |
728 | Lisp_Object temp; | |
f5957179 | 729 | |
fcab51aa RS |
730 | temp = Fprevious_overlay_change (position); |
731 | if (! NILP (limit)) | |
732 | { | |
d615870a | 733 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
734 | if (XINT (limit) > XINT (temp)) |
735 | temp = limit; | |
736 | } | |
737 | return Fprevious_property_change (position, Qnil, temp); | |
738 | } | |
0b0737d1 GM |
739 | |
740 | ||
16a97296 | 741 | DEFUE ("next-single-char-property-change", Fnext_single_char_property_change, |
b7e047fb | 742 | Snext_single_char_property_change, 2, 4, 0, |
8c1a1077 PJ |
743 | doc: /* Return the position of next text property or overlay change for a specific property. |
744 | Scans characters forward from POSITION till it finds | |
745 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
746 | If the optional third argument OBJECT is a buffer (or nil, which means |
747 | the current buffer), POSITION is a buffer position (integer or marker). | |
748 | If OBJECT is a string, POSITION is a 0-based index into it. | |
749 | ||
85cc6738 RS |
750 | In a string, scan runs to the end of the string. |
751 | In a buffer, it runs to (point-max), and the value cannot exceed that. | |
752 | ||
8c1a1077 PJ |
753 | The property values are compared with `eq'. |
754 | If the property is constant all the way to the end of OBJECT, return the | |
755 | last valid position in OBJECT. | |
756 | If the optional fourth argument LIMIT is non-nil, don't search | |
757 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 758 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
0b0737d1 GM |
759 | { |
760 | if (STRINGP (object)) | |
761 | { | |
b7e047fb MB |
762 | position = Fnext_single_property_change (position, prop, object, limit); |
763 | if (NILP (position)) | |
0b0737d1 GM |
764 | { |
765 | if (NILP (limit)) | |
d5db4077 | 766 | position = make_number (SCHARS (object)); |
0b0737d1 | 767 | else |
d615870a DK |
768 | { |
769 | CHECK_NUMBER (limit); | |
770 | position = limit; | |
771 | } | |
0b0737d1 GM |
772 | } |
773 | } | |
774 | else | |
775 | { | |
776 | Lisp_Object initial_value, value; | |
aed13378 | 777 | int count = SPECPDL_INDEX (); |
0b0737d1 | 778 | |
b7e047fb | 779 | if (! NILP (object)) |
b7826503 | 780 | CHECK_BUFFER (object); |
81f6e55f | 781 | |
0b0737d1 GM |
782 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
783 | { | |
784 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
785 | Fset_buffer (object); | |
786 | } | |
787 | ||
d615870a DK |
788 | CHECK_NUMBER_COERCE_MARKER (position); |
789 | ||
b7e047fb | 790 | initial_value = Fget_char_property (position, prop, object); |
81f6e55f | 791 | |
b7e047fb | 792 | if (NILP (limit)) |
85cc6738 | 793 | XSETFASTINT (limit, ZV); |
b7e047fb | 794 | else |
b7826503 | 795 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 796 | |
85cc6738 | 797 | if (XFASTINT (position) >= XFASTINT (limit)) |
0b0737d1 | 798 | { |
85cc6738 RS |
799 | position = limit; |
800 | if (XFASTINT (position) > ZV) | |
801 | XSETFASTINT (position, ZV); | |
0b0737d1 | 802 | } |
85cc6738 RS |
803 | else |
804 | while (1) | |
805 | { | |
806 | position = Fnext_char_property_change (position, limit); | |
807 | if (XFASTINT (position) >= XFASTINT (limit)) | |
808 | { | |
809 | position = limit; | |
810 | break; | |
811 | } | |
812 | ||
813 | value = Fget_char_property (position, prop, object); | |
814 | if (!EQ (value, initial_value)) | |
815 | break; | |
816 | } | |
0b0737d1 GM |
817 | |
818 | unbind_to (count, Qnil); | |
819 | } | |
820 | ||
b7e047fb | 821 | return position; |
0b0737d1 GM |
822 | } |
823 | ||
16a97296 | 824 | DEFUE ("previous-single-char-property-change", |
b7e047fb MB |
825 | Fprevious_single_char_property_change, |
826 | Sprevious_single_char_property_change, 2, 4, 0, | |
8c1a1077 PJ |
827 | doc: /* Return the position of previous text property or overlay change for a specific property. |
828 | Scans characters backward from POSITION till it finds | |
829 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
830 | If the optional third argument OBJECT is a buffer (or nil, which means |
831 | the current buffer), POSITION is a buffer position (integer or marker). | |
832 | If OBJECT is a string, POSITION is a 0-based index into it. | |
833 | ||
85cc6738 RS |
834 | In a string, scan runs to the start of the string. |
835 | In a buffer, it runs to (point-min), and the value cannot be less than that. | |
836 | ||
8c1a1077 PJ |
837 | The property values are compared with `eq'. |
838 | If the property is constant all the way to the start of OBJECT, return the | |
839 | first valid position in OBJECT. | |
840 | If the optional fourth argument LIMIT is non-nil, don't search | |
841 | back past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 842 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
b7e047fb MB |
843 | { |
844 | if (STRINGP (object)) | |
845 | { | |
846 | position = Fprevious_single_property_change (position, prop, object, limit); | |
847 | if (NILP (position)) | |
848 | { | |
849 | if (NILP (limit)) | |
1e02f3cb | 850 | position = make_number (0); |
b7e047fb | 851 | else |
d615870a DK |
852 | { |
853 | CHECK_NUMBER (limit); | |
854 | position = limit; | |
855 | } | |
b7e047fb MB |
856 | } |
857 | } | |
858 | else | |
859 | { | |
aed13378 | 860 | int count = SPECPDL_INDEX (); |
b7e047fb MB |
861 | |
862 | if (! NILP (object)) | |
b7826503 | 863 | CHECK_BUFFER (object); |
81f6e55f | 864 | |
b7e047fb MB |
865 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
866 | { | |
867 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
868 | Fset_buffer (object); | |
869 | } | |
81f6e55f | 870 | |
d615870a DK |
871 | CHECK_NUMBER_COERCE_MARKER (position); |
872 | ||
b7e047fb | 873 | if (NILP (limit)) |
85cc6738 | 874 | XSETFASTINT (limit, BEGV); |
b7e047fb | 875 | else |
b7826503 | 876 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 877 | |
ce6b02e0 | 878 | if (XFASTINT (position) <= XFASTINT (limit)) |
85cc6738 RS |
879 | { |
880 | position = limit; | |
881 | if (XFASTINT (position) < BEGV) | |
882 | XSETFASTINT (position, BEGV); | |
883 | } | |
ce6b02e0 | 884 | else |
b7e047fb | 885 | { |
85cc6738 RS |
886 | Lisp_Object initial_value |
887 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
888 | prop, object); | |
81f6e55f | 889 | |
85cc6738 | 890 | while (1) |
ce6b02e0 MB |
891 | { |
892 | position = Fprevious_char_property_change (position, limit); | |
0b0737d1 | 893 | |
ce6b02e0 MB |
894 | if (XFASTINT (position) <= XFASTINT (limit)) |
895 | { | |
896 | position = limit; | |
897 | break; | |
898 | } | |
899 | else | |
900 | { | |
85cc6738 RS |
901 | Lisp_Object value |
902 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
903 | prop, object); | |
ce6b02e0 MB |
904 | |
905 | if (!EQ (value, initial_value)) | |
906 | break; | |
907 | } | |
908 | } | |
b7e047fb MB |
909 | } |
910 | ||
911 | unbind_to (count, Qnil); | |
912 | } | |
913 | ||
914 | return position; | |
915 | } | |
fcab51aa | 916 | \f |
16a97296 | 917 | DEFUE ("next-property-change", Fnext_property_change, |
111b637d | 918 | Snext_property_change, 1, 3, 0, |
8c1a1077 PJ |
919 | doc: /* Return the position of next property change. |
920 | Scans characters forward from POSITION in OBJECT till it finds | |
921 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
922 | If the optional second argument OBJECT is a buffer (or nil, which means |
923 | the current buffer), POSITION is a buffer position (integer or marker). | |
924 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
925 | Return nil if the property is constant all the way to the end of OBJECT. |
926 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
927 | ||
928 | If the optional third argument LIMIT is non-nil, don't search | |
929 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 930 | (Lisp_Object position, Lisp_Object object, Lisp_Object limit) |
d418ef42 JA |
931 | { |
932 | register INTERVAL i, next; | |
933 | ||
5fbe2a44 | 934 | if (NILP (object)) |
c8a4fc3d | 935 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 936 | |
3a232704 | 937 | if (!NILP (limit) && !EQ (limit, Qt)) |
b7826503 | 938 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 939 | |
1f5e848a | 940 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 | 941 | |
041aa96f RS |
942 | /* If LIMIT is t, return start of next interval--don't |
943 | bother checking further intervals. */ | |
944 | if (EQ (limit, Qt)) | |
945 | { | |
44214c1b RS |
946 | if (NULL_INTERVAL_P (i)) |
947 | next = i; | |
948 | else | |
949 | next = next_interval (i); | |
81f6e55f | 950 | |
c7b6dfa6 | 951 | if (NULL_INTERVAL_P (next)) |
1f5e848a | 952 | XSETFASTINT (position, (STRINGP (object) |
d5db4077 | 953 | ? SCHARS (object) |
1f5e848a | 954 | : BUF_ZV (XBUFFER (object)))); |
c7b6dfa6 | 955 | else |
ad077db0 | 956 | XSETFASTINT (position, next->position); |
1f5e848a | 957 | return position; |
041aa96f RS |
958 | } |
959 | ||
44214c1b RS |
960 | if (NULL_INTERVAL_P (i)) |
961 | return limit; | |
962 | ||
963 | next = next_interval (i); | |
964 | ||
3a232704 | 965 | while (!NULL_INTERVAL_P (next) && intervals_equal (i, next) |
ad077db0 | 966 | && (NILP (limit) || next->position < XFASTINT (limit))) |
d418ef42 JA |
967 | next = next_interval (next); |
968 | ||
52c0f270 CY |
969 | if (NULL_INTERVAL_P (next) |
970 | || (next->position | |
971 | >= (INTEGERP (limit) | |
972 | ? XFASTINT (limit) | |
973 | : (STRINGP (object) | |
974 | ? SCHARS (object) | |
975 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 976 | return limit; |
52c0f270 CY |
977 | else |
978 | return make_number (next->position); | |
19e1c426 RS |
979 | } |
980 | ||
16a97296 | 981 | DEFUE ("next-single-property-change", Fnext_single_property_change, |
111b637d | 982 | Snext_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
983 | doc: /* Return the position of next property change for a specific property. |
984 | Scans characters forward from POSITION till it finds | |
985 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
986 | If the optional third argument OBJECT is a buffer (or nil, which means |
987 | the current buffer), POSITION is a buffer position (integer or marker). | |
988 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
989 | The property values are compared with `eq'. |
990 | Return nil if the property is constant all the way to the end of OBJECT. | |
991 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
992 | ||
993 | If the optional fourth argument LIMIT is non-nil, don't search | |
994 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 995 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
9c79dd1b JA |
996 | { |
997 | register INTERVAL i, next; | |
998 | register Lisp_Object here_val; | |
999 | ||
5fbe2a44 | 1000 | if (NILP (object)) |
c8a4fc3d | 1001 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1002 | |
1387d54e | 1003 | if (!NILP (limit)) |
b7826503 | 1004 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1005 | |
1f5e848a | 1006 | i = validate_interval_range (object, &position, &position, soft); |
9c79dd1b | 1007 | if (NULL_INTERVAL_P (i)) |
111b637d | 1008 | return limit; |
9c79dd1b | 1009 | |
6a0486dd | 1010 | here_val = textget (i->plist, prop); |
9c79dd1b | 1011 | next = next_interval (i); |
81f6e55f | 1012 | while (! NULL_INTERVAL_P (next) |
111b637d | 1013 | && EQ (here_val, textget (next->plist, prop)) |
ad077db0 | 1014 | && (NILP (limit) || next->position < XFASTINT (limit))) |
9c79dd1b JA |
1015 | next = next_interval (next); |
1016 | ||
52c0f270 CY |
1017 | if (NULL_INTERVAL_P (next) |
1018 | || (next->position | |
1019 | >= (INTEGERP (limit) | |
1020 | ? XFASTINT (limit) | |
1021 | : (STRINGP (object) | |
1022 | ? SCHARS (object) | |
1023 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 1024 | return limit; |
52c0f270 CY |
1025 | else |
1026 | return make_number (next->position); | |
9c79dd1b JA |
1027 | } |
1028 | ||
16a97296 | 1029 | DEFUE ("previous-property-change", Fprevious_property_change, |
111b637d | 1030 | Sprevious_property_change, 1, 3, 0, |
8c1a1077 PJ |
1031 | doc: /* Return the position of previous property change. |
1032 | Scans characters backwards from POSITION in OBJECT till it finds | |
1033 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
1034 | If the optional second argument OBJECT is a buffer (or nil, which means |
1035 | the current buffer), POSITION is a buffer position (integer or marker). | |
1036 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1037 | Return nil if the property is constant all the way to the start of OBJECT. |
1038 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1039 | ||
1040 | If the optional third argument LIMIT is non-nil, don't search | |
1041 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
5842a27b | 1042 | (Lisp_Object position, Lisp_Object object, Lisp_Object limit) |
d418ef42 JA |
1043 | { |
1044 | register INTERVAL i, previous; | |
1045 | ||
5fbe2a44 | 1046 | if (NILP (object)) |
c8a4fc3d | 1047 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1048 | |
1387d54e | 1049 | if (!NILP (limit)) |
b7826503 | 1050 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1051 | |
1f5e848a | 1052 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 | 1053 | if (NULL_INTERVAL_P (i)) |
111b637d | 1054 | return limit; |
d418ef42 | 1055 | |
53b7feec | 1056 | /* Start with the interval containing the char before point. */ |
1f5e848a | 1057 | if (i->position == XFASTINT (position)) |
53b7feec RS |
1058 | i = previous_interval (i); |
1059 | ||
d418ef42 | 1060 | previous = previous_interval (i); |
3a232704 | 1061 | while (!NULL_INTERVAL_P (previous) && intervals_equal (previous, i) |
111b637d | 1062 | && (NILP (limit) |
ad077db0 | 1063 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
d418ef42 | 1064 | previous = previous_interval (previous); |
d418ef42 | 1065 | |
52c0f270 CY |
1066 | if (NULL_INTERVAL_P (previous) |
1067 | || (previous->position + LENGTH (previous) | |
1068 | <= (INTEGERP (limit) | |
1069 | ? XFASTINT (limit) | |
1070 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1071 | return limit; | |
1072 | else | |
1073 | return make_number (previous->position + LENGTH (previous)); | |
d418ef42 JA |
1074 | } |
1075 | ||
16a97296 | 1076 | DEFUE ("previous-single-property-change", Fprevious_single_property_change, |
111b637d | 1077 | Sprevious_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
1078 | doc: /* Return the position of previous property change for a specific property. |
1079 | Scans characters backward from POSITION till it finds | |
1080 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
1081 | If the optional third argument OBJECT is a buffer (or nil, which means |
1082 | the current buffer), POSITION is a buffer position (integer or marker). | |
1083 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1084 | The property values are compared with `eq'. |
1085 | Return nil if the property is constant all the way to the start of OBJECT. | |
1086 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1087 | ||
1088 | If the optional fourth argument LIMIT is non-nil, don't search | |
1089 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
5842a27b | 1090 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
9c79dd1b JA |
1091 | { |
1092 | register INTERVAL i, previous; | |
1093 | register Lisp_Object here_val; | |
1094 | ||
5fbe2a44 | 1095 | if (NILP (object)) |
c8a4fc3d | 1096 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1097 | |
1387d54e | 1098 | if (!NILP (limit)) |
b7826503 | 1099 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1100 | |
1f5e848a | 1101 | i = validate_interval_range (object, &position, &position, soft); |
9c79dd1b | 1102 | |
53b7feec | 1103 | /* Start with the interval containing the char before point. */ |
3a232704 | 1104 | if (!NULL_INTERVAL_P (i) && i->position == XFASTINT (position)) |
53b7feec RS |
1105 | i = previous_interval (i); |
1106 | ||
6873cfa3 KH |
1107 | if (NULL_INTERVAL_P (i)) |
1108 | return limit; | |
1109 | ||
6a0486dd | 1110 | here_val = textget (i->plist, prop); |
9c79dd1b | 1111 | previous = previous_interval (i); |
3a232704 | 1112 | while (!NULL_INTERVAL_P (previous) |
111b637d RS |
1113 | && EQ (here_val, textget (previous->plist, prop)) |
1114 | && (NILP (limit) | |
ad077db0 | 1115 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
9c79dd1b | 1116 | previous = previous_interval (previous); |
9c79dd1b | 1117 | |
52c0f270 CY |
1118 | if (NULL_INTERVAL_P (previous) |
1119 | || (previous->position + LENGTH (previous) | |
1120 | <= (INTEGERP (limit) | |
1121 | ? XFASTINT (limit) | |
1122 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1123 | return limit; | |
1124 | else | |
1125 | return make_number (previous->position + LENGTH (previous)); | |
9c79dd1b | 1126 | } |
fcab51aa | 1127 | \f |
c98da214 RS |
1128 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1129 | ||
16a97296 | 1130 | DEFUE ("add-text-properties", Fadd_text_properties, |
5fbe2a44 | 1131 | Sadd_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1132 | doc: /* Add properties to the text from START to END. |
1133 | The third argument PROPERTIES is a property list | |
81f6e55f FP |
1134 | specifying the property values to add. If the optional fourth argument |
1135 | OBJECT is a buffer (or nil, which means the current buffer), | |
1136 | START and END are buffer positions (integers or markers). | |
1137 | If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 | 1138 | Return t if any property value actually changed, nil otherwise. */) |
5842a27b | 1139 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
d418ef42 JA |
1140 | { |
1141 | register INTERVAL i, unchanged; | |
2452438f EZ |
1142 | register EMACS_INT s, len; |
1143 | register int modified = 0; | |
c98da214 | 1144 | struct gcpro gcpro1; |
d418ef42 JA |
1145 | |
1146 | properties = validate_plist (properties); | |
1147 | if (NILP (properties)) | |
1148 | return Qnil; | |
1149 | ||
5fbe2a44 | 1150 | if (NILP (object)) |
c8a4fc3d | 1151 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1152 | |
d418ef42 JA |
1153 | i = validate_interval_range (object, &start, &end, hard); |
1154 | if (NULL_INTERVAL_P (i)) | |
1155 | return Qnil; | |
1156 | ||
1157 | s = XINT (start); | |
1158 | len = XINT (end) - s; | |
1159 | ||
c98da214 RS |
1160 | /* No need to protect OBJECT, because we GC only if it's a buffer, |
1161 | and live buffers are always protected. */ | |
1162 | GCPRO1 (properties); | |
1163 | ||
d418ef42 | 1164 | /* If we're not starting on an interval boundary, we have to |
cdf3e5a2 | 1165 | split this interval. */ |
d418ef42 JA |
1166 | if (i->position != s) |
1167 | { | |
1168 | /* If this interval already has the properties, we can | |
cdf3e5a2 | 1169 | skip it. */ |
d418ef42 JA |
1170 | if (interval_has_all_properties (properties, i)) |
1171 | { | |
2452438f | 1172 | EMACS_INT got = (LENGTH (i) - (s - i->position)); |
d418ef42 | 1173 | if (got >= len) |
64db1307 | 1174 | RETURN_UNGCPRO (Qnil); |
d418ef42 | 1175 | len -= got; |
05d5b93e | 1176 | i = next_interval (i); |
d418ef42 JA |
1177 | } |
1178 | else | |
1179 | { | |
1180 | unchanged = i; | |
ad9c1940 | 1181 | i = split_interval_right (unchanged, s - unchanged->position); |
d418ef42 | 1182 | copy_properties (unchanged, i); |
d418ef42 JA |
1183 | } |
1184 | } | |
1185 | ||
2a631db1 | 1186 | if (BUFFERP (object)) |
3e145152 | 1187 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1188 | |
daa5e28f | 1189 | /* We are at the beginning of interval I, with LEN chars to scan. */ |
caa31568 | 1190 | for (;;) |
d418ef42 | 1191 | { |
d4b530ad RS |
1192 | if (i == 0) |
1193 | abort (); | |
1194 | ||
d418ef42 JA |
1195 | if (LENGTH (i) >= len) |
1196 | { | |
c98da214 RS |
1197 | /* We can UNGCPRO safely here, because there will be just |
1198 | one more chance to gc, in the next call to add_properties, | |
1199 | and after that we will not need PROPERTIES or OBJECT again. */ | |
1200 | UNGCPRO; | |
1201 | ||
d418ef42 | 1202 | if (interval_has_all_properties (properties, i)) |
26c76ace | 1203 | { |
2a631db1 RS |
1204 | if (BUFFERP (object)) |
1205 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1206 | XINT (end) - XINT (start)); | |
26c76ace RS |
1207 | |
1208 | return modified ? Qt : Qnil; | |
1209 | } | |
d418ef42 JA |
1210 | |
1211 | if (LENGTH (i) == len) | |
1212 | { | |
d4b530ad | 1213 | add_properties (properties, i, object); |
2a631db1 RS |
1214 | if (BUFFERP (object)) |
1215 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1216 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1217 | return Qt; |
1218 | } | |
1219 | ||
1220 | /* i doesn't have the properties, and goes past the change limit */ | |
1221 | unchanged = i; | |
ad9c1940 | 1222 | i = split_interval_left (unchanged, len); |
d418ef42 | 1223 | copy_properties (unchanged, i); |
d4b530ad | 1224 | add_properties (properties, i, object); |
2a631db1 RS |
1225 | if (BUFFERP (object)) |
1226 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1227 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1228 | return Qt; |
1229 | } | |
1230 | ||
1231 | len -= LENGTH (i); | |
d4b530ad | 1232 | modified += add_properties (properties, i, object); |
d418ef42 JA |
1233 | i = next_interval (i); |
1234 | } | |
1235 | } | |
1236 | ||
c98da214 RS |
1237 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1238 | ||
16a97296 | 1239 | DEFUE ("put-text-property", Fput_text_property, |
d4b530ad | 1240 | Sput_text_property, 4, 5, 0, |
8c1a1077 PJ |
1241 | doc: /* Set one property of the text from START to END. |
1242 | The third and fourth arguments PROPERTY and VALUE | |
1243 | specify the property to add. | |
81f6e55f FP |
1244 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1245 | the current buffer), START and END are buffer positions (integers or | |
1246 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1247 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
d4b530ad RS |
1248 | { |
1249 | Fadd_text_properties (start, end, | |
1f5e848a | 1250 | Fcons (property, Fcons (value, Qnil)), |
d4b530ad RS |
1251 | object); |
1252 | return Qnil; | |
1253 | } | |
1254 | ||
16a97296 | 1255 | DEFUE ("set-text-properties", Fset_text_properties, |
5fbe2a44 | 1256 | Sset_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1257 | doc: /* Completely replace properties of text from START to END. |
1258 | The third argument PROPERTIES is the new property list. | |
81f6e55f FP |
1259 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1260 | the current buffer), START and END are buffer positions (integers or | |
1261 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 PJ |
1262 | If PROPERTIES is nil, the effect is to remove all properties from |
1263 | the designated part of OBJECT. */) | |
5842a27b | 1264 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
0087ade6 GM |
1265 | { |
1266 | return set_text_properties (start, end, properties, object, Qt); | |
1267 | } | |
1268 | ||
1269 | ||
1270 | /* Replace properties of text from START to END with new list of | |
1271 | properties PROPERTIES. OBJECT is the buffer or string containing | |
1272 | the text. OBJECT nil means use the current buffer. | |
9c345213 AM |
1273 | COHERENT_CHANGE_P nil means this is being called as an internal |
1274 | subroutine, rather than as a change primitive with checking of | |
1275 | read-only, invoking change hooks, etc.. Value is nil if the | |
1276 | function _detected_ that it did not replace any properties, non-nil | |
1277 | otherwise. */ | |
0087ade6 GM |
1278 | |
1279 | Lisp_Object | |
971de7fb | 1280 | set_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object, Lisp_Object coherent_change_p) |
d418ef42 | 1281 | { |
28ff4293 | 1282 | register INTERVAL i; |
33d7d0df RS |
1283 | Lisp_Object ostart, oend; |
1284 | ||
1285 | ostart = start; | |
1286 | oend = end; | |
d418ef42 | 1287 | |
1f5e848a | 1288 | properties = validate_plist (properties); |
d418ef42 | 1289 | |
5fbe2a44 | 1290 | if (NILP (object)) |
c8a4fc3d | 1291 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1292 | |
919fa9cb RS |
1293 | /* If we want no properties for a whole string, |
1294 | get rid of its intervals. */ | |
1f5e848a | 1295 | if (NILP (properties) && STRINGP (object) |
919fa9cb | 1296 | && XFASTINT (start) == 0 |
d5db4077 | 1297 | && XFASTINT (end) == SCHARS (object)) |
919fa9cb | 1298 | { |
d5db4077 | 1299 | if (! STRING_INTERVALS (object)) |
537562fa | 1300 | return Qnil; |
26c76ace | 1301 | |
9056febe | 1302 | STRING_SET_INTERVALS (object, NULL_INTERVAL); |
919fa9cb RS |
1303 | return Qt; |
1304 | } | |
1305 | ||
facc570e | 1306 | i = validate_interval_range (object, &start, &end, soft); |
919fa9cb | 1307 | |
d418ef42 | 1308 | if (NULL_INTERVAL_P (i)) |
facc570e | 1309 | { |
1f5e848a EN |
1310 | /* If buffer has no properties, and we want none, return now. */ |
1311 | if (NILP (properties)) | |
facc570e RS |
1312 | return Qnil; |
1313 | ||
33d7d0df RS |
1314 | /* Restore the original START and END values |
1315 | because validate_interval_range increments them for strings. */ | |
1316 | start = ostart; | |
1317 | end = oend; | |
1318 | ||
facc570e RS |
1319 | i = validate_interval_range (object, &start, &end, hard); |
1320 | /* This can return if start == end. */ | |
1321 | if (NULL_INTERVAL_P (i)) | |
1322 | return Qnil; | |
1323 | } | |
d418ef42 | 1324 | |
9c345213 | 1325 | if (BUFFERP (object) && !NILP (coherent_change_p)) |
3e145152 | 1326 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1327 | |
78ff4175 RS |
1328 | set_text_properties_1 (start, end, properties, object, i); |
1329 | ||
9c345213 | 1330 | if (BUFFERP (object) && !NILP (coherent_change_p)) |
78ff4175 RS |
1331 | signal_after_change (XINT (start), XINT (end) - XINT (start), |
1332 | XINT (end) - XINT (start)); | |
1333 | return Qt; | |
1334 | } | |
1335 | ||
1336 | /* Replace properties of text from START to END with new list of | |
1337 | properties PROPERTIES. BUFFER is the buffer containing | |
1338 | the text. This does not obey any hooks. | |
1339 | You can provide the interval that START is located in as I, | |
ce768453 | 1340 | or pass NULL for I and this function will find it. |
49f68fd2 | 1341 | START and END can be in any order. */ |
78ff4175 RS |
1342 | |
1343 | void | |
971de7fb | 1344 | set_text_properties_1 (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object buffer, INTERVAL i) |
78ff4175 RS |
1345 | { |
1346 | register INTERVAL prev_changed = NULL_INTERVAL; | |
2452438f | 1347 | register EMACS_INT s, len; |
78ff4175 RS |
1348 | INTERVAL unchanged; |
1349 | ||
1350 | s = XINT (start); | |
1351 | len = XINT (end) - s; | |
49f68fd2 RS |
1352 | if (len == 0) |
1353 | return; | |
1354 | if (len < 0) | |
1355 | { | |
1356 | s = s + len; | |
1357 | len = - len; | |
1358 | } | |
1359 | ||
78ff4175 RS |
1360 | if (i == 0) |
1361 | i = find_interval (BUF_INTERVALS (XBUFFER (buffer)), s); | |
1362 | ||
d418ef42 JA |
1363 | if (i->position != s) |
1364 | { | |
1365 | unchanged = i; | |
ad9c1940 | 1366 | i = split_interval_right (unchanged, s - unchanged->position); |
7855e674 | 1367 | |
d418ef42 JA |
1368 | if (LENGTH (i) > len) |
1369 | { | |
9c79dd1b | 1370 | copy_properties (unchanged, i); |
ad9c1940 | 1371 | i = split_interval_left (i, len); |
78ff4175 RS |
1372 | set_properties (properties, i, buffer); |
1373 | return; | |
d418ef42 JA |
1374 | } |
1375 | ||
78ff4175 | 1376 | set_properties (properties, i, buffer); |
daa5e28f | 1377 | |
9c79dd1b | 1378 | if (LENGTH (i) == len) |
78ff4175 | 1379 | return; |
9c79dd1b JA |
1380 | |
1381 | prev_changed = i; | |
d418ef42 JA |
1382 | len -= LENGTH (i); |
1383 | i = next_interval (i); | |
1384 | } | |
1385 | ||
1e792e4d PE |
1386 | /* We are starting at the beginning of an interval I. LEN is positive. */ |
1387 | do | |
d418ef42 | 1388 | { |
d4b530ad RS |
1389 | if (i == 0) |
1390 | abort (); | |
1391 | ||
d418ef42 JA |
1392 | if (LENGTH (i) >= len) |
1393 | { | |
cd7d971d | 1394 | if (LENGTH (i) > len) |
ad9c1940 | 1395 | i = split_interval_left (i, len); |
d418ef42 | 1396 | |
6f232881 RS |
1397 | /* We have to call set_properties even if we are going to |
1398 | merge the intervals, so as to make the undo records | |
1399 | and cause redisplay to happen. */ | |
78ff4175 | 1400 | set_properties (properties, i, buffer); |
6f232881 | 1401 | if (!NULL_INTERVAL_P (prev_changed)) |
9c79dd1b | 1402 | merge_interval_left (i); |
78ff4175 | 1403 | return; |
d418ef42 JA |
1404 | } |
1405 | ||
1406 | len -= LENGTH (i); | |
6f232881 RS |
1407 | |
1408 | /* We have to call set_properties even if we are going to | |
1409 | merge the intervals, so as to make the undo records | |
1410 | and cause redisplay to happen. */ | |
78ff4175 | 1411 | set_properties (properties, i, buffer); |
9c79dd1b | 1412 | if (NULL_INTERVAL_P (prev_changed)) |
6f232881 | 1413 | prev_changed = i; |
9c79dd1b JA |
1414 | else |
1415 | prev_changed = i = merge_interval_left (i); | |
1416 | ||
d418ef42 JA |
1417 | i = next_interval (i); |
1418 | } | |
1e792e4d | 1419 | while (len > 0); |
d418ef42 JA |
1420 | } |
1421 | ||
16a97296 | 1422 | DEFUE ("remove-text-properties", Fremove_text_properties, |
5fbe2a44 | 1423 | Sremove_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1424 | doc: /* Remove some properties from text from START to END. |
1425 | The third argument PROPERTIES is a property list | |
1426 | whose property names specify the properties to remove. | |
1427 | \(The values stored in PROPERTIES are ignored.) | |
81f6e55f FP |
1428 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1429 | the current buffer), START and END are buffer positions (integers or | |
1430 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
1431 | Return t if any property was actually removed, nil otherwise. | |
1432 | ||
518c0b83 | 1433 | Use `set-text-properties' if you want to remove all text properties. */) |
5842a27b | 1434 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
d418ef42 JA |
1435 | { |
1436 | register INTERVAL i, unchanged; | |
2452438f EZ |
1437 | register EMACS_INT s, len; |
1438 | register int modified = 0; | |
d418ef42 | 1439 | |
5fbe2a44 | 1440 | if (NILP (object)) |
c8a4fc3d | 1441 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1442 | |
d418ef42 JA |
1443 | i = validate_interval_range (object, &start, &end, soft); |
1444 | if (NULL_INTERVAL_P (i)) | |
1445 | return Qnil; | |
1446 | ||
1447 | s = XINT (start); | |
1448 | len = XINT (end) - s; | |
9c79dd1b | 1449 | |
d418ef42 JA |
1450 | if (i->position != s) |
1451 | { | |
1452 | /* No properties on this first interval -- return if | |
cdf3e5a2 | 1453 | it covers the entire region. */ |
1f5e848a | 1454 | if (! interval_has_some_properties (properties, i)) |
d418ef42 | 1455 | { |
2452438f | 1456 | EMACS_INT got = (LENGTH (i) - (s - i->position)); |
d418ef42 JA |
1457 | if (got >= len) |
1458 | return Qnil; | |
1459 | len -= got; | |
05d5b93e | 1460 | i = next_interval (i); |
d418ef42 | 1461 | } |
daa5e28f RS |
1462 | /* Split away the beginning of this interval; what we don't |
1463 | want to modify. */ | |
d418ef42 JA |
1464 | else |
1465 | { | |
1466 | unchanged = i; | |
ad9c1940 | 1467 | i = split_interval_right (unchanged, s - unchanged->position); |
d418ef42 | 1468 | copy_properties (unchanged, i); |
d418ef42 JA |
1469 | } |
1470 | } | |
1471 | ||
2a631db1 | 1472 | if (BUFFERP (object)) |
3e145152 | 1473 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1474 | |
d418ef42 | 1475 | /* We are at the beginning of an interval, with len to scan */ |
caa31568 | 1476 | for (;;) |
d418ef42 | 1477 | { |
d4b530ad RS |
1478 | if (i == 0) |
1479 | abort (); | |
1480 | ||
d418ef42 JA |
1481 | if (LENGTH (i) >= len) |
1482 | { | |
1f5e848a | 1483 | if (! interval_has_some_properties (properties, i)) |
d418ef42 JA |
1484 | return modified ? Qt : Qnil; |
1485 | ||
1486 | if (LENGTH (i) == len) | |
1487 | { | |
11713b6d RS |
1488 | remove_properties (properties, Qnil, i, object); |
1489 | if (BUFFERP (object)) | |
1490 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1491 | XINT (end) - XINT (start)); | |
1492 | return Qt; | |
1493 | } | |
1494 | ||
1495 | /* i has the properties, and goes past the change limit */ | |
1496 | unchanged = i; | |
1497 | i = split_interval_left (i, len); | |
1498 | copy_properties (unchanged, i); | |
1499 | remove_properties (properties, Qnil, i, object); | |
1500 | if (BUFFERP (object)) | |
1501 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1502 | XINT (end) - XINT (start)); | |
1503 | return Qt; | |
1504 | } | |
1505 | ||
1506 | len -= LENGTH (i); | |
1507 | modified += remove_properties (properties, Qnil, i, object); | |
1508 | i = next_interval (i); | |
1509 | } | |
1510 | } | |
1511 | ||
16a97296 | 1512 | DEFUE ("remove-list-of-text-properties", Fremove_list_of_text_properties, |
11713b6d RS |
1513 | Sremove_list_of_text_properties, 3, 4, 0, |
1514 | doc: /* Remove some properties from text from START to END. | |
1515 | The third argument LIST-OF-PROPERTIES is a list of property names to remove. | |
81f6e55f FP |
1516 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1517 | the current buffer), START and END are buffer positions (integers or | |
1518 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
11713b6d | 1519 | Return t if any property was actually removed, nil otherwise. */) |
5842a27b | 1520 | (Lisp_Object start, Lisp_Object end, Lisp_Object list_of_properties, Lisp_Object object) |
11713b6d RS |
1521 | { |
1522 | register INTERVAL i, unchanged; | |
2452438f EZ |
1523 | register EMACS_INT s, len; |
1524 | register int modified = 0; | |
11713b6d RS |
1525 | Lisp_Object properties; |
1526 | properties = list_of_properties; | |
1527 | ||
1528 | if (NILP (object)) | |
1529 | XSETBUFFER (object, current_buffer); | |
1530 | ||
1531 | i = validate_interval_range (object, &start, &end, soft); | |
1532 | if (NULL_INTERVAL_P (i)) | |
1533 | return Qnil; | |
1534 | ||
1535 | s = XINT (start); | |
1536 | len = XINT (end) - s; | |
1537 | ||
1538 | if (i->position != s) | |
1539 | { | |
1540 | /* No properties on this first interval -- return if | |
1541 | it covers the entire region. */ | |
1542 | if (! interval_has_some_properties_list (properties, i)) | |
1543 | { | |
2452438f | 1544 | EMACS_INT got = (LENGTH (i) - (s - i->position)); |
11713b6d RS |
1545 | if (got >= len) |
1546 | return Qnil; | |
1547 | len -= got; | |
1548 | i = next_interval (i); | |
1549 | } | |
1550 | /* Split away the beginning of this interval; what we don't | |
1551 | want to modify. */ | |
1552 | else | |
1553 | { | |
1554 | unchanged = i; | |
1555 | i = split_interval_right (unchanged, s - unchanged->position); | |
1556 | copy_properties (unchanged, i); | |
1557 | } | |
1558 | } | |
1559 | ||
9b17c9f5 LH |
1560 | /* We are at the beginning of an interval, with len to scan. |
1561 | The flag `modified' records if changes have been made. | |
1562 | When object is a buffer, we must call modify_region before changes are | |
1563 | made and signal_after_change when we are done. | |
e0f24100 GM |
1564 | We call modify_region before calling remove_properties if modified == 0, |
1565 | and we call signal_after_change before returning if modified != 0. */ | |
11713b6d RS |
1566 | for (;;) |
1567 | { | |
1568 | if (i == 0) | |
1569 | abort (); | |
1570 | ||
1571 | if (LENGTH (i) >= len) | |
1572 | { | |
1573 | if (! interval_has_some_properties_list (properties, i)) | |
ef1b0ba7 SM |
1574 | { |
1575 | if (modified) | |
1576 | { | |
1577 | if (BUFFERP (object)) | |
1578 | signal_after_change (XINT (start), | |
1579 | XINT (end) - XINT (start), | |
1580 | XINT (end) - XINT (start)); | |
1581 | return Qt; | |
1582 | } | |
1583 | else | |
1584 | return Qnil; | |
1585 | } | |
1586 | else if (LENGTH (i) == len) | |
11713b6d | 1587 | { |
9b17c9f5 | 1588 | if (!modified && BUFFERP (object)) |
3e145152 | 1589 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
11713b6d | 1590 | remove_properties (Qnil, properties, i, object); |
2a631db1 RS |
1591 | if (BUFFERP (object)) |
1592 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1593 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1594 | return Qt; |
1595 | } | |
ef1b0ba7 SM |
1596 | else |
1597 | { /* i has the properties, and goes past the change limit. */ | |
1598 | unchanged = i; | |
1599 | i = split_interval_left (i, len); | |
1600 | copy_properties (unchanged, i); | |
1601 | if (!modified && BUFFERP (object)) | |
1602 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); | |
1603 | remove_properties (Qnil, properties, i, object); | |
1604 | if (BUFFERP (object)) | |
1605 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1606 | XINT (end) - XINT (start)); | |
1607 | return Qt; | |
1608 | } | |
d418ef42 | 1609 | } |
9b17c9f5 LH |
1610 | if (interval_has_some_properties_list (properties, i)) |
1611 | { | |
1612 | if (!modified && BUFFERP (object)) | |
3e145152 | 1613 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
9b17c9f5 LH |
1614 | remove_properties (Qnil, properties, i, object); |
1615 | modified = 1; | |
1616 | } | |
d418ef42 | 1617 | len -= LENGTH (i); |
d418ef42 JA |
1618 | i = next_interval (i); |
1619 | } | |
1620 | } | |
fcab51aa | 1621 | \f |
16a97296 | 1622 | DEFUE ("text-property-any", Ftext_property_any, |
ad9c1940 | 1623 | Stext_property_any, 4, 5, 0, |
8c1a1077 PJ |
1624 | doc: /* Check text from START to END for property PROPERTY equalling VALUE. |
1625 | If so, return the position of the first character whose property PROPERTY | |
1626 | is `eq' to VALUE. Otherwise return nil. | |
81f6e55f FP |
1627 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1628 | the current buffer), START and END are buffer positions (integers or | |
1629 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1630 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
ad9c1940 JB |
1631 | { |
1632 | register INTERVAL i; | |
2452438f | 1633 | register EMACS_INT e, pos; |
ad9c1940 JB |
1634 | |
1635 | if (NILP (object)) | |
c8a4fc3d | 1636 | XSETBUFFER (object, current_buffer); |
ad9c1940 | 1637 | i = validate_interval_range (object, &start, &end, soft); |
2084fddb KH |
1638 | if (NULL_INTERVAL_P (i)) |
1639 | return (!NILP (value) || EQ (start, end) ? Qnil : start); | |
ad9c1940 JB |
1640 | e = XINT (end); |
1641 | ||
1642 | while (! NULL_INTERVAL_P (i)) | |
1643 | { | |
1644 | if (i->position >= e) | |
1645 | break; | |
1f5e848a | 1646 | if (EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1647 | { |
1648 | pos = i->position; | |
1649 | if (pos < XINT (start)) | |
1650 | pos = XINT (start); | |
ad077db0 | 1651 | return make_number (pos); |
ad9c1940 JB |
1652 | } |
1653 | i = next_interval (i); | |
1654 | } | |
1655 | return Qnil; | |
1656 | } | |
1657 | ||
1658 | DEFUN ("text-property-not-all", Ftext_property_not_all, | |
1659 | Stext_property_not_all, 4, 5, 0, | |
8c1a1077 PJ |
1660 | doc: /* Check text from START to END for property PROPERTY not equalling VALUE. |
1661 | If so, return the position of the first character whose property PROPERTY | |
1662 | is not `eq' to VALUE. Otherwise, return nil. | |
81f6e55f FP |
1663 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1664 | the current buffer), START and END are buffer positions (integers or | |
1665 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1666 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
ad9c1940 JB |
1667 | { |
1668 | register INTERVAL i; | |
2452438f | 1669 | register EMACS_INT s, e; |
ad9c1940 JB |
1670 | |
1671 | if (NILP (object)) | |
c8a4fc3d | 1672 | XSETBUFFER (object, current_buffer); |
ad9c1940 JB |
1673 | i = validate_interval_range (object, &start, &end, soft); |
1674 | if (NULL_INTERVAL_P (i)) | |
916a3119 | 1675 | return (NILP (value) || EQ (start, end)) ? Qnil : start; |
ad9c1940 JB |
1676 | s = XINT (start); |
1677 | e = XINT (end); | |
1678 | ||
1679 | while (! NULL_INTERVAL_P (i)) | |
1680 | { | |
1681 | if (i->position >= e) | |
1682 | break; | |
1f5e848a | 1683 | if (! EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1684 | { |
1685 | if (i->position > s) | |
1686 | s = i->position; | |
ad077db0 | 1687 | return make_number (s); |
ad9c1940 JB |
1688 | } |
1689 | i = next_interval (i); | |
1690 | } | |
1691 | return Qnil; | |
1692 | } | |
e138dfdc MB |
1693 | |
1694 | \f | |
1695 | /* Return the direction from which the text-property PROP would be | |
1696 | inherited by any new text inserted at POS: 1 if it would be | |
1697 | inherited from the char after POS, -1 if it would be inherited from | |
6f716644 SM |
1698 | the char before POS, and 0 if from neither. |
1699 | BUFFER can be either a buffer or nil (meaning current buffer). */ | |
e138dfdc MB |
1700 | |
1701 | int | |
971de7fb | 1702 | text_property_stickiness (Lisp_Object prop, Lisp_Object pos, Lisp_Object buffer) |
e138dfdc MB |
1703 | { |
1704 | Lisp_Object prev_pos, front_sticky; | |
1705 | int is_rear_sticky = 1, is_front_sticky = 0; /* defaults */ | |
1706 | ||
6f716644 SM |
1707 | if (NILP (buffer)) |
1708 | XSETBUFFER (buffer, current_buffer); | |
1709 | ||
1710 | if (XINT (pos) > BUF_BEGV (XBUFFER (buffer))) | |
e138dfdc MB |
1711 | /* Consider previous character. */ |
1712 | { | |
1713 | Lisp_Object rear_non_sticky; | |
1714 | ||
1715 | prev_pos = make_number (XINT (pos) - 1); | |
6f716644 | 1716 | rear_non_sticky = Fget_text_property (prev_pos, Qrear_nonsticky, buffer); |
e138dfdc MB |
1717 | |
1718 | if (!NILP (CONSP (rear_non_sticky) | |
1719 | ? Fmemq (prop, rear_non_sticky) | |
1720 | : rear_non_sticky)) | |
1721 | /* PROP is rear-non-sticky. */ | |
1722 | is_rear_sticky = 0; | |
1723 | } | |
506d2f9a CY |
1724 | else |
1725 | return 0; | |
e138dfdc MB |
1726 | |
1727 | /* Consider following character. */ | |
506d2f9a CY |
1728 | /* This signals an arg-out-of-range error if pos is outside the |
1729 | buffer's accessible range. */ | |
6f716644 | 1730 | front_sticky = Fget_text_property (pos, Qfront_sticky, buffer); |
e138dfdc MB |
1731 | |
1732 | if (EQ (front_sticky, Qt) | |
1733 | || (CONSP (front_sticky) | |
1734 | && !NILP (Fmemq (prop, front_sticky)))) | |
1735 | /* PROP is inherited from after. */ | |
1736 | is_front_sticky = 1; | |
1737 | ||
1738 | /* Simple cases, where the properties are consistent. */ | |
1739 | if (is_rear_sticky && !is_front_sticky) | |
1740 | return -1; | |
1741 | else if (!is_rear_sticky && is_front_sticky) | |
1742 | return 1; | |
1743 | else if (!is_rear_sticky && !is_front_sticky) | |
1744 | return 0; | |
1745 | ||
1746 | /* The stickiness properties are inconsistent, so we have to | |
1747 | disambiguate. Basically, rear-sticky wins, _except_ if the | |
1748 | property that would be inherited has a value of nil, in which case | |
1749 | front-sticky wins. */ | |
6f716644 SM |
1750 | if (XINT (pos) == BUF_BEGV (XBUFFER (buffer)) |
1751 | || NILP (Fget_text_property (prev_pos, prop, buffer))) | |
e138dfdc MB |
1752 | return 1; |
1753 | else | |
1754 | return -1; | |
1755 | } | |
1756 | ||
fcab51aa | 1757 | \f |
15e4954b JB |
1758 | /* I don't think this is the right interface to export; how often do you |
1759 | want to do something like this, other than when you're copying objects | |
1760 | around? | |
1761 | ||
1762 | I think it would be better to have a pair of functions, one which | |
1763 | returns the text properties of a region as a list of ranges and | |
1764 | plists, and another which applies such a list to another object. */ | |
1765 | ||
c98da214 RS |
1766 | /* Add properties from SRC to SRC of SRC, starting at POS in DEST. |
1767 | SRC and DEST may each refer to strings or buffers. | |
1768 | Optional sixth argument PROP causes only that property to be copied. | |
1769 | Properties are copied to DEST as if by `add-text-properties'. | |
1770 | Return t if any property value actually changed, nil otherwise. */ | |
1771 | ||
1772 | /* Note this can GC when DEST is a buffer. */ | |
ad077db0 | 1773 | |
15e4954b | 1774 | Lisp_Object |
971de7fb | 1775 | copy_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object src, Lisp_Object pos, Lisp_Object dest, Lisp_Object prop) |
15e4954b JB |
1776 | { |
1777 | INTERVAL i; | |
1778 | Lisp_Object res; | |
1779 | Lisp_Object stuff; | |
1780 | Lisp_Object plist; | |
2452438f EZ |
1781 | EMACS_INT s, e, e2, p, len; |
1782 | int modified = 0; | |
c98da214 | 1783 | struct gcpro gcpro1, gcpro2; |
15e4954b JB |
1784 | |
1785 | i = validate_interval_range (src, &start, &end, soft); | |
1786 | if (NULL_INTERVAL_P (i)) | |
1787 | return Qnil; | |
1788 | ||
b7826503 | 1789 | CHECK_NUMBER_COERCE_MARKER (pos); |
15e4954b JB |
1790 | { |
1791 | Lisp_Object dest_start, dest_end; | |
1792 | ||
1793 | dest_start = pos; | |
e9c4fbcd | 1794 | XSETFASTINT (dest_end, XINT (dest_start) + (XINT (end) - XINT (start))); |
15e4954b JB |
1795 | /* Apply this to a copy of pos; it will try to increment its arguments, |
1796 | which we don't want. */ | |
1797 | validate_interval_range (dest, &dest_start, &dest_end, soft); | |
1798 | } | |
1799 | ||
1800 | s = XINT (start); | |
1801 | e = XINT (end); | |
1802 | p = XINT (pos); | |
1803 | ||
1804 | stuff = Qnil; | |
1805 | ||
1806 | while (s < e) | |
1807 | { | |
1808 | e2 = i->position + LENGTH (i); | |
1809 | if (e2 > e) | |
1810 | e2 = e; | |
1811 | len = e2 - s; | |
1812 | ||
1813 | plist = i->plist; | |
1814 | if (! NILP (prop)) | |
1815 | while (! NILP (plist)) | |
1816 | { | |
1817 | if (EQ (Fcar (plist), prop)) | |
1818 | { | |
1819 | plist = Fcons (prop, Fcons (Fcar (Fcdr (plist)), Qnil)); | |
1820 | break; | |
1821 | } | |
1822 | plist = Fcdr (Fcdr (plist)); | |
1823 | } | |
1824 | if (! NILP (plist)) | |
1825 | { | |
1826 | /* Must defer modifications to the interval tree in case src | |
cdf3e5a2 | 1827 | and dest refer to the same string or buffer. */ |
15e4954b JB |
1828 | stuff = Fcons (Fcons (make_number (p), |
1829 | Fcons (make_number (p + len), | |
1830 | Fcons (plist, Qnil))), | |
1831 | stuff); | |
1832 | } | |
1833 | ||
1834 | i = next_interval (i); | |
1835 | if (NULL_INTERVAL_P (i)) | |
1836 | break; | |
1837 | ||
1838 | p += len; | |
1839 | s = i->position; | |
1840 | } | |
1841 | ||
c98da214 RS |
1842 | GCPRO2 (stuff, dest); |
1843 | ||
15e4954b JB |
1844 | while (! NILP (stuff)) |
1845 | { | |
1846 | res = Fcar (stuff); | |
1847 | res = Fadd_text_properties (Fcar (res), Fcar (Fcdr (res)), | |
1848 | Fcar (Fcdr (Fcdr (res))), dest); | |
1849 | if (! NILP (res)) | |
1850 | modified++; | |
1851 | stuff = Fcdr (stuff); | |
1852 | } | |
1853 | ||
c98da214 RS |
1854 | UNGCPRO; |
1855 | ||
15e4954b JB |
1856 | return modified ? Qt : Qnil; |
1857 | } | |
9dd7eec6 GM |
1858 | |
1859 | ||
1860 | /* Return a list representing the text properties of OBJECT between | |
1861 | START and END. if PROP is non-nil, report only on that property. | |
1862 | Each result list element has the form (S E PLIST), where S and E | |
1863 | are positions in OBJECT and PLIST is a property list containing the | |
1864 | text properties of OBJECT between S and E. Value is nil if OBJECT | |
1865 | doesn't contain text properties between START and END. */ | |
1866 | ||
1867 | Lisp_Object | |
971de7fb | 1868 | text_property_list (Lisp_Object object, Lisp_Object start, Lisp_Object end, Lisp_Object prop) |
9dd7eec6 GM |
1869 | { |
1870 | struct interval *i; | |
1871 | Lisp_Object result; | |
9dd7eec6 GM |
1872 | |
1873 | result = Qnil; | |
81f6e55f | 1874 | |
9dd7eec6 GM |
1875 | i = validate_interval_range (object, &start, &end, soft); |
1876 | if (!NULL_INTERVAL_P (i)) | |
1877 | { | |
2452438f EZ |
1878 | EMACS_INT s = XINT (start); |
1879 | EMACS_INT e = XINT (end); | |
81f6e55f | 1880 | |
9dd7eec6 GM |
1881 | while (s < e) |
1882 | { | |
2452438f | 1883 | EMACS_INT interval_end, len; |
9dd7eec6 | 1884 | Lisp_Object plist; |
81f6e55f | 1885 | |
9dd7eec6 GM |
1886 | interval_end = i->position + LENGTH (i); |
1887 | if (interval_end > e) | |
1888 | interval_end = e; | |
1889 | len = interval_end - s; | |
81f6e55f | 1890 | |
9dd7eec6 GM |
1891 | plist = i->plist; |
1892 | ||
1893 | if (!NILP (prop)) | |
99784d63 SM |
1894 | for (; CONSP (plist); plist = Fcdr (XCDR (plist))) |
1895 | if (EQ (XCAR (plist), prop)) | |
9dd7eec6 | 1896 | { |
99784d63 | 1897 | plist = Fcons (prop, Fcons (Fcar (XCDR (plist)), Qnil)); |
9dd7eec6 GM |
1898 | break; |
1899 | } | |
1900 | ||
1901 | if (!NILP (plist)) | |
1902 | result = Fcons (Fcons (make_number (s), | |
1903 | Fcons (make_number (s + len), | |
1904 | Fcons (plist, Qnil))), | |
1905 | result); | |
81f6e55f | 1906 | |
9dd7eec6 GM |
1907 | i = next_interval (i); |
1908 | if (NULL_INTERVAL_P (i)) | |
1909 | break; | |
1910 | s = i->position; | |
1911 | } | |
1912 | } | |
81f6e55f | 1913 | |
9dd7eec6 GM |
1914 | return result; |
1915 | } | |
1916 | ||
1917 | ||
1918 | /* Add text properties to OBJECT from LIST. LIST is a list of triples | |
1919 | (START END PLIST), where START and END are positions and PLIST is a | |
1920 | property list containing the text properties to add. Adjust START | |
1921 | and END positions by DELTA before adding properties. Value is | |
1922 | non-zero if OBJECT was modified. */ | |
1923 | ||
1924 | int | |
971de7fb | 1925 | add_text_properties_from_list (Lisp_Object object, Lisp_Object list, Lisp_Object delta) |
9dd7eec6 GM |
1926 | { |
1927 | struct gcpro gcpro1, gcpro2; | |
1928 | int modified_p = 0; | |
81f6e55f | 1929 | |
9dd7eec6 | 1930 | GCPRO2 (list, object); |
81f6e55f | 1931 | |
9dd7eec6 GM |
1932 | for (; CONSP (list); list = XCDR (list)) |
1933 | { | |
1934 | Lisp_Object item, start, end, plist, tem; | |
81f6e55f | 1935 | |
9dd7eec6 GM |
1936 | item = XCAR (list); |
1937 | start = make_number (XINT (XCAR (item)) + XINT (delta)); | |
1938 | end = make_number (XINT (XCAR (XCDR (item))) + XINT (delta)); | |
1939 | plist = XCAR (XCDR (XCDR (item))); | |
81f6e55f | 1940 | |
9dd7eec6 GM |
1941 | tem = Fadd_text_properties (start, end, plist, object); |
1942 | if (!NILP (tem)) | |
1943 | modified_p = 1; | |
1944 | } | |
1945 | ||
1946 | UNGCPRO; | |
1947 | return modified_p; | |
1948 | } | |
1949 | ||
1950 | ||
1951 | ||
e398c61c CY |
1952 | /* Modify end-points of ranges in LIST destructively, and return the |
1953 | new list. LIST is a list as returned from text_property_list. | |
1954 | Discard properties that begin at or after NEW_END, and limit | |
1955 | end-points to NEW_END. */ | |
9dd7eec6 | 1956 | |
e398c61c | 1957 | Lisp_Object |
971de7fb | 1958 | extend_property_ranges (Lisp_Object list, Lisp_Object new_end) |
9dd7eec6 | 1959 | { |
e398c61c | 1960 | Lisp_Object prev = Qnil, head = list; |
2452438f | 1961 | EMACS_INT max = XINT (new_end); |
e398c61c CY |
1962 | |
1963 | for (; CONSP (list); prev = list, list = XCDR (list)) | |
9dd7eec6 | 1964 | { |
e398c61c | 1965 | Lisp_Object item, beg, end; |
81f6e55f | 1966 | |
9dd7eec6 | 1967 | item = XCAR (list); |
e398c61c | 1968 | beg = XCAR (item); |
9dd7eec6 GM |
1969 | end = XCAR (XCDR (item)); |
1970 | ||
e398c61c CY |
1971 | if (XINT (beg) >= max) |
1972 | { | |
1973 | /* The start-point is past the end of the new string. | |
1974 | Discard this property. */ | |
1975 | if (EQ (head, list)) | |
1976 | head = XCDR (list); | |
1977 | else | |
1978 | XSETCDR (prev, XCDR (list)); | |
1979 | } | |
1980 | else if (XINT (end) > max) | |
1981 | /* The end-point is past the end of the new string. */ | |
f3fbd155 | 1982 | XSETCAR (XCDR (item), new_end); |
9dd7eec6 | 1983 | } |
e398c61c CY |
1984 | |
1985 | return head; | |
9dd7eec6 GM |
1986 | } |
1987 | ||
1988 | ||
318d2fa8 RS |
1989 | \f |
1990 | /* Call the modification hook functions in LIST, each with START and END. */ | |
1991 | ||
1992 | static void | |
971de7fb | 1993 | call_mod_hooks (Lisp_Object list, Lisp_Object start, Lisp_Object end) |
318d2fa8 RS |
1994 | { |
1995 | struct gcpro gcpro1; | |
1996 | GCPRO1 (list); | |
1997 | while (!NILP (list)) | |
1998 | { | |
1999 | call2 (Fcar (list), start, end); | |
2000 | list = Fcdr (list); | |
2001 | } | |
2002 | UNGCPRO; | |
2003 | } | |
2004 | ||
96f90544 RS |
2005 | /* Check for read-only intervals between character positions START ... END, |
2006 | in BUF, and signal an error if we find one. | |
2007 | ||
2008 | Then check for any modification hooks in the range. | |
2009 | Create a list of all these hooks in lexicographic order, | |
2010 | eliminating consecutive extra copies of the same hook. Then call | |
2011 | those hooks in order, with START and END - 1 as arguments. */ | |
15e4954b | 2012 | |
318d2fa8 | 2013 | void |
971de7fb | 2014 | verify_interval_modification (struct buffer *buf, int start, int end) |
318d2fa8 RS |
2015 | { |
2016 | register INTERVAL intervals = BUF_INTERVALS (buf); | |
695f302f | 2017 | register INTERVAL i; |
318d2fa8 RS |
2018 | Lisp_Object hooks; |
2019 | register Lisp_Object prev_mod_hooks; | |
2020 | Lisp_Object mod_hooks; | |
2021 | struct gcpro gcpro1; | |
2022 | ||
2023 | hooks = Qnil; | |
2024 | prev_mod_hooks = Qnil; | |
2025 | mod_hooks = Qnil; | |
2026 | ||
2027 | interval_insert_behind_hooks = Qnil; | |
2028 | interval_insert_in_front_hooks = Qnil; | |
2029 | ||
2030 | if (NULL_INTERVAL_P (intervals)) | |
2031 | return; | |
2032 | ||
2033 | if (start > end) | |
2034 | { | |
2452438f | 2035 | EMACS_INT temp = start; |
318d2fa8 RS |
2036 | start = end; |
2037 | end = temp; | |
2038 | } | |
2039 | ||
2040 | /* For an insert operation, check the two chars around the position. */ | |
2041 | if (start == end) | |
2042 | { | |
7cb66899 | 2043 | INTERVAL prev = NULL; |
318d2fa8 RS |
2044 | Lisp_Object before, after; |
2045 | ||
2046 | /* Set I to the interval containing the char after START, | |
2047 | and PREV to the interval containing the char before START. | |
2048 | Either one may be null. They may be equal. */ | |
2049 | i = find_interval (intervals, start); | |
2050 | ||
2051 | if (start == BUF_BEGV (buf)) | |
2052 | prev = 0; | |
2053 | else if (i->position == start) | |
2054 | prev = previous_interval (i); | |
2055 | else if (i->position < start) | |
2056 | prev = i; | |
2057 | if (start == BUF_ZV (buf)) | |
2058 | i = 0; | |
2059 | ||
2060 | /* If Vinhibit_read_only is set and is not a list, we can | |
2061 | skip the read_only checks. */ | |
2062 | if (NILP (Vinhibit_read_only) || CONSP (Vinhibit_read_only)) | |
2063 | { | |
2064 | /* If I and PREV differ we need to check for the read-only | |
cdf3e5a2 | 2065 | property together with its stickiness. If either I or |
318d2fa8 RS |
2066 | PREV are 0, this check is all we need. |
2067 | We have to take special care, since read-only may be | |
2068 | indirectly defined via the category property. */ | |
2069 | if (i != prev) | |
2070 | { | |
2071 | if (! NULL_INTERVAL_P (i)) | |
2072 | { | |
2073 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2074 | |
318d2fa8 RS |
2075 | /* If interval I is read-only and read-only is |
2076 | front-sticky, inhibit insertion. | |
2077 | Check for read-only as well as category. */ | |
2078 | if (! NILP (after) | |
2079 | && NILP (Fmemq (after, Vinhibit_read_only))) | |
2080 | { | |
2081 | Lisp_Object tem; | |
2082 | ||
2083 | tem = textget (i->plist, Qfront_sticky); | |
2084 | if (TMEM (Qread_only, tem) | |
2085 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2086 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2087 | text_read_only (after); |
318d2fa8 RS |
2088 | } |
2089 | } | |
2090 | ||
2091 | if (! NULL_INTERVAL_P (prev)) | |
2092 | { | |
2093 | before = textget (prev->plist, Qread_only); | |
81f6e55f | 2094 | |
318d2fa8 RS |
2095 | /* If interval PREV is read-only and read-only isn't |
2096 | rear-nonsticky, inhibit insertion. | |
2097 | Check for read-only as well as category. */ | |
2098 | if (! NILP (before) | |
2099 | && NILP (Fmemq (before, Vinhibit_read_only))) | |
2100 | { | |
2101 | Lisp_Object tem; | |
2102 | ||
2103 | tem = textget (prev->plist, Qrear_nonsticky); | |
2104 | if (! TMEM (Qread_only, tem) | |
2105 | && (! NILP (Fplist_get (prev->plist,Qread_only)) | |
2106 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2107 | text_read_only (before); |
318d2fa8 RS |
2108 | } |
2109 | } | |
2110 | } | |
2111 | else if (! NULL_INTERVAL_P (i)) | |
2112 | { | |
2113 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2114 | |
318d2fa8 RS |
2115 | /* If interval I is read-only and read-only is |
2116 | front-sticky, inhibit insertion. | |
2117 | Check for read-only as well as category. */ | |
2118 | if (! NILP (after) && NILP (Fmemq (after, Vinhibit_read_only))) | |
2119 | { | |
2120 | Lisp_Object tem; | |
2121 | ||
2122 | tem = textget (i->plist, Qfront_sticky); | |
2123 | if (TMEM (Qread_only, tem) | |
2124 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2125 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2126 | text_read_only (after); |
318d2fa8 RS |
2127 | |
2128 | tem = textget (prev->plist, Qrear_nonsticky); | |
2129 | if (! TMEM (Qread_only, tem) | |
2130 | && (! NILP (Fplist_get (prev->plist, Qread_only)) | |
2131 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2132 | text_read_only (after); |
318d2fa8 RS |
2133 | } |
2134 | } | |
2135 | } | |
2136 | ||
2137 | /* Run both insert hooks (just once if they're the same). */ | |
2138 | if (!NULL_INTERVAL_P (prev)) | |
2139 | interval_insert_behind_hooks | |
2140 | = textget (prev->plist, Qinsert_behind_hooks); | |
2141 | if (!NULL_INTERVAL_P (i)) | |
2142 | interval_insert_in_front_hooks | |
2143 | = textget (i->plist, Qinsert_in_front_hooks); | |
2144 | } | |
0ba7995b | 2145 | else |
318d2fa8 RS |
2146 | { |
2147 | /* Loop over intervals on or next to START...END, | |
2148 | collecting their hooks. */ | |
2149 | ||
2150 | i = find_interval (intervals, start); | |
2151 | do | |
2152 | { | |
2153 | if (! INTERVAL_WRITABLE_P (i)) | |
bcf97349 | 2154 | text_read_only (textget (i->plist, Qread_only)); |
318d2fa8 | 2155 | |
0ba7995b | 2156 | if (!inhibit_modification_hooks) |
318d2fa8 | 2157 | { |
0ba7995b GM |
2158 | mod_hooks = textget (i->plist, Qmodification_hooks); |
2159 | if (! NILP (mod_hooks) && ! EQ (mod_hooks, prev_mod_hooks)) | |
2160 | { | |
2161 | hooks = Fcons (mod_hooks, hooks); | |
2162 | prev_mod_hooks = mod_hooks; | |
2163 | } | |
318d2fa8 RS |
2164 | } |
2165 | ||
2166 | i = next_interval (i); | |
2167 | } | |
2168 | /* Keep going thru the interval containing the char before END. */ | |
2169 | while (! NULL_INTERVAL_P (i) && i->position < end); | |
2170 | ||
0ba7995b | 2171 | if (!inhibit_modification_hooks) |
318d2fa8 | 2172 | { |
0ba7995b GM |
2173 | GCPRO1 (hooks); |
2174 | hooks = Fnreverse (hooks); | |
2175 | while (! EQ (hooks, Qnil)) | |
2176 | { | |
2177 | call_mod_hooks (Fcar (hooks), make_number (start), | |
2178 | make_number (end)); | |
2179 | hooks = Fcdr (hooks); | |
2180 | } | |
2181 | UNGCPRO; | |
318d2fa8 | 2182 | } |
318d2fa8 RS |
2183 | } |
2184 | } | |
2185 | ||
96f90544 | 2186 | /* Run the interval hooks for an insertion on character range START ... END. |
318d2fa8 RS |
2187 | verify_interval_modification chose which hooks to run; |
2188 | this function is called after the insertion happens | |
2189 | so it can indicate the range of inserted text. */ | |
2190 | ||
2191 | void | |
971de7fb | 2192 | report_interval_modification (Lisp_Object start, Lisp_Object end) |
318d2fa8 RS |
2193 | { |
2194 | if (! NILP (interval_insert_behind_hooks)) | |
2e34157c | 2195 | call_mod_hooks (interval_insert_behind_hooks, start, end); |
318d2fa8 RS |
2196 | if (! NILP (interval_insert_in_front_hooks) |
2197 | && ! EQ (interval_insert_in_front_hooks, | |
2198 | interval_insert_behind_hooks)) | |
2e34157c | 2199 | call_mod_hooks (interval_insert_in_front_hooks, start, end); |
318d2fa8 RS |
2200 | } |
2201 | \f | |
d418ef42 | 2202 | void |
971de7fb | 2203 | syms_of_textprop (void) |
d418ef42 | 2204 | { |
29208e82 | 2205 | DEFVAR_LISP ("default-text-properties", Vdefault_text_properties, |
8c1a1077 PJ |
2206 | doc: /* Property-list used as default values. |
2207 | The value of a property in this list is seen as the value for every | |
2208 | character that does not have its own value for that property. */); | |
ad1b2f20 | 2209 | Vdefault_text_properties = Qnil; |
c7dd82a3 | 2210 | |
29208e82 | 2211 | DEFVAR_LISP ("char-property-alias-alist", Vchar_property_alias_alist, |
49d110a8 CW |
2212 | doc: /* Alist of alternative properties for properties without a value. |
2213 | Each element should look like (PROPERTY ALTERNATIVE1 ALTERNATIVE2...). | |
2214 | If a piece of text has no direct value for a particular property, then | |
2215 | this alist is consulted. If that property appears in the alist, then | |
2216 | the first non-nil value from the associated alternative properties is | |
2217 | returned. */); | |
2218 | Vchar_property_alias_alist = Qnil; | |
2219 | ||
29208e82 | 2220 | DEFVAR_LISP ("inhibit-point-motion-hooks", Vinhibit_point_motion_hooks, |
8c1a1077 PJ |
2221 | doc: /* If non-nil, don't run `point-left' and `point-entered' text properties. |
2222 | This also inhibits the use of the `intangible' text property. */); | |
688a5a0f | 2223 | Vinhibit_point_motion_hooks = Qnil; |
318d2fa8 | 2224 | |
abc2f676 | 2225 | DEFVAR_LISP ("text-property-default-nonsticky", |
29208e82 | 2226 | Vtext_property_default_nonsticky, |
8c1a1077 PJ |
2227 | doc: /* Alist of properties vs the corresponding non-stickinesses. |
2228 | Each element has the form (PROPERTY . NONSTICKINESS). | |
2229 | ||
2230 | If a character in a buffer has PROPERTY, new text inserted adjacent to | |
2231 | the character doesn't inherit PROPERTY if NONSTICKINESS is non-nil, | |
518c0b83 JB |
2232 | inherits it if NONSTICKINESS is nil. The `front-sticky' and |
2233 | `rear-nonsticky' properties of the character override NONSTICKINESS. */); | |
98ebf860 SM |
2234 | /* Text property `syntax-table' should be nonsticky by default. */ |
2235 | Vtext_property_default_nonsticky | |
d67b4f80 | 2236 | = Fcons (Fcons (intern_c_string ("syntax-table"), Qt), Qnil); |
abc2f676 | 2237 | |
318d2fa8 RS |
2238 | staticpro (&interval_insert_behind_hooks); |
2239 | staticpro (&interval_insert_in_front_hooks); | |
2240 | interval_insert_behind_hooks = Qnil; | |
2241 | interval_insert_in_front_hooks = Qnil; | |
2242 | ||
81f6e55f | 2243 | |
d418ef42 JA |
2244 | /* Common attributes one might give text */ |
2245 | ||
2246 | staticpro (&Qforeground); | |
d67b4f80 | 2247 | Qforeground = intern_c_string ("foreground"); |
d418ef42 | 2248 | staticpro (&Qbackground); |
d67b4f80 | 2249 | Qbackground = intern_c_string ("background"); |
d418ef42 | 2250 | staticpro (&Qfont); |
d67b4f80 | 2251 | Qfont = intern_c_string ("font"); |
d418ef42 | 2252 | staticpro (&Qstipple); |
d67b4f80 | 2253 | Qstipple = intern_c_string ("stipple"); |
d418ef42 | 2254 | staticpro (&Qunderline); |
d67b4f80 | 2255 | Qunderline = intern_c_string ("underline"); |
d418ef42 | 2256 | staticpro (&Qread_only); |
d67b4f80 | 2257 | Qread_only = intern_c_string ("read-only"); |
d418ef42 | 2258 | staticpro (&Qinvisible); |
d67b4f80 | 2259 | Qinvisible = intern_c_string ("invisible"); |
46b4e741 | 2260 | staticpro (&Qintangible); |
d67b4f80 | 2261 | Qintangible = intern_c_string ("intangible"); |
dc70cea7 | 2262 | staticpro (&Qcategory); |
d67b4f80 | 2263 | Qcategory = intern_c_string ("category"); |
dc70cea7 | 2264 | staticpro (&Qlocal_map); |
d67b4f80 | 2265 | Qlocal_map = intern_c_string ("local-map"); |
19e1c426 | 2266 | staticpro (&Qfront_sticky); |
d67b4f80 | 2267 | Qfront_sticky = intern_c_string ("front-sticky"); |
19e1c426 | 2268 | staticpro (&Qrear_nonsticky); |
d67b4f80 | 2269 | Qrear_nonsticky = intern_c_string ("rear-nonsticky"); |
69bb837e | 2270 | staticpro (&Qmouse_face); |
d67b4f80 | 2271 | Qmouse_face = intern_c_string ("mouse-face"); |
54b33868 | 2272 | staticpro (&Qminibuffer_prompt); |
d67b4f80 | 2273 | Qminibuffer_prompt = intern_c_string ("minibuffer-prompt"); |
d418ef42 JA |
2274 | |
2275 | /* Properties that text might use to specify certain actions */ | |
2276 | ||
2277 | staticpro (&Qmouse_left); | |
d67b4f80 | 2278 | Qmouse_left = intern_c_string ("mouse-left"); |
d418ef42 | 2279 | staticpro (&Qmouse_entered); |
d67b4f80 | 2280 | Qmouse_entered = intern_c_string ("mouse-entered"); |
d418ef42 | 2281 | staticpro (&Qpoint_left); |
d67b4f80 | 2282 | Qpoint_left = intern_c_string ("point-left"); |
d418ef42 | 2283 | staticpro (&Qpoint_entered); |
d67b4f80 | 2284 | Qpoint_entered = intern_c_string ("point-entered"); |
d418ef42 JA |
2285 | |
2286 | defsubr (&Stext_properties_at); | |
5fbe2a44 | 2287 | defsubr (&Sget_text_property); |
eb769fd7 | 2288 | defsubr (&Sget_char_property); |
97a1bc63 | 2289 | defsubr (&Sget_char_property_and_overlay); |
fcab51aa RS |
2290 | defsubr (&Snext_char_property_change); |
2291 | defsubr (&Sprevious_char_property_change); | |
b7e047fb MB |
2292 | defsubr (&Snext_single_char_property_change); |
2293 | defsubr (&Sprevious_single_char_property_change); | |
d418ef42 | 2294 | defsubr (&Snext_property_change); |
9c79dd1b | 2295 | defsubr (&Snext_single_property_change); |
d418ef42 | 2296 | defsubr (&Sprevious_property_change); |
9c79dd1b | 2297 | defsubr (&Sprevious_single_property_change); |
d418ef42 | 2298 | defsubr (&Sadd_text_properties); |
d4b530ad | 2299 | defsubr (&Sput_text_property); |
d418ef42 JA |
2300 | defsubr (&Sset_text_properties); |
2301 | defsubr (&Sremove_text_properties); | |
11713b6d | 2302 | defsubr (&Sremove_list_of_text_properties); |
ad9c1940 JB |
2303 | defsubr (&Stext_property_any); |
2304 | defsubr (&Stext_property_not_all); | |
5fbe2a44 | 2305 | /* defsubr (&Serase_text_properties); */ |
15e4954b | 2306 | /* defsubr (&Scopy_text_properties); */ |
d418ef42 | 2307 | } |