Commit | Line | Data |
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d418ef42 | 1 | /* Interface code for dealing with text properties. |
ab422c4d PE |
2 | Copyright (C) 1993-1995, 1997, 1999-2013 Free Software Foundation, |
3 | Inc. | |
d418ef42 JA |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
d418ef42 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
d418ef42 JA |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d418ef42 | 19 | |
18160b98 | 20 | #include <config.h> |
0328b6de | 21 | |
d418ef42 JA |
22 | #include "lisp.h" |
23 | #include "intervals.h" | |
e5560ff7 | 24 | #include "character.h" |
d418ef42 | 25 | #include "buffer.h" |
f5957179 | 26 | #include "window.h" |
59a486ab | 27 | |
318d2fa8 RS |
28 | /* Test for membership, allowing for t (actually any non-cons) to mean the |
29 | universal set. */ | |
30 | ||
31 | #define TMEM(sym, set) (CONSP (set) ? ! NILP (Fmemq (sym, set)) : ! NILP (set)) | |
d418ef42 JA |
32 | \f |
33 | ||
34 | /* NOTES: previous- and next- property change will have to skip | |
35 | zero-length intervals if they are implemented. This could be done | |
36 | inside next_interval and previous_interval. | |
37 | ||
9c79dd1b JA |
38 | set_properties needs to deal with the interval property cache. |
39 | ||
d418ef42 | 40 | It is assumed that for any interval plist, a property appears |
d4b530ad | 41 | only once on the list. Although some code i.e., remove_properties, |
d418ef42 | 42 | handles the more general case, the uniqueness of properties is |
eb8c3be9 | 43 | necessary for the system to remain consistent. This requirement |
cdf3e5a2 | 44 | is enforced by the subrs installing properties onto the intervals. */ |
d418ef42 JA |
45 | |
46 | \f | |
cdf3e5a2 | 47 | /* Types of hooks. */ |
955cbe7b PE |
48 | static Lisp_Object Qmouse_left; |
49 | static Lisp_Object Qmouse_entered; | |
d418ef42 JA |
50 | Lisp_Object Qpoint_left; |
51 | Lisp_Object Qpoint_entered; | |
dc70cea7 RS |
52 | Lisp_Object Qcategory; |
53 | Lisp_Object Qlocal_map; | |
d418ef42 | 54 | |
cdf3e5a2 | 55 | /* Visual properties text (including strings) may have. */ |
955cbe7b PE |
56 | static Lisp_Object Qforeground, Qbackground, Qunderline; |
57 | Lisp_Object Qfont; | |
58 | static Lisp_Object Qstipple; | |
59 | Lisp_Object Qinvisible, Qintangible, Qmouse_face; | |
60 | static Lisp_Object Qread_only; | |
54b33868 | 61 | Lisp_Object Qminibuffer_prompt; |
19e1c426 RS |
62 | |
63 | /* Sticky properties */ | |
64 | Lisp_Object Qfront_sticky, Qrear_nonsticky; | |
d7b4e137 JB |
65 | |
66 | /* If o1 is a cons whose cdr is a cons, return non-zero and set o2 to | |
67 | the o1's cdr. Otherwise, return zero. This is handy for | |
68 | traversing plists. */ | |
70949dac | 69 | #define PLIST_ELT_P(o1, o2) (CONSP (o1) && ((o2)=XCDR (o1), CONSP (o2))) |
d7b4e137 | 70 | |
318d2fa8 RS |
71 | /* verify_interval_modification saves insertion hooks here |
72 | to be run later by report_interval_modification. */ | |
50436f33 PE |
73 | static Lisp_Object interval_insert_behind_hooks; |
74 | static Lisp_Object interval_insert_in_front_hooks; | |
7cb66899 GM |
75 | |
76 | ||
77 | /* Signal a `text-read-only' error. This function makes it easier | |
78 | to capture that error in GDB by putting a breakpoint on it. */ | |
79 | ||
845ca893 | 80 | static _Noreturn void |
971de7fb | 81 | text_read_only (Lisp_Object propval) |
7cb66899 | 82 | { |
d0a29e1d KS |
83 | if (STRINGP (propval)) |
84 | xsignal1 (Qtext_read_only, propval); | |
85 | ||
86 | xsignal0 (Qtext_read_only); | |
7cb66899 GM |
87 | } |
88 | ||
20edc1c9 DA |
89 | /* Prepare to modify the region of BUFFER from START to END. */ |
90 | ||
91 | static void | |
92 | modify_region (Lisp_Object buffer, Lisp_Object start, Lisp_Object end) | |
93 | { | |
94 | struct buffer *buf = XBUFFER (buffer), *old = current_buffer; | |
95 | ||
96 | set_buffer_internal (buf); | |
97 | modify_region_1 (XINT (start), XINT (end), true); | |
98 | set_buffer_internal (old); | |
99 | } | |
7cb66899 | 100 | |
ac876a79 JA |
101 | /* Extract the interval at the position pointed to by BEGIN from |
102 | OBJECT, a string or buffer. Additionally, check that the positions | |
103 | pointed to by BEGIN and END are within the bounds of OBJECT, and | |
104 | reverse them if *BEGIN is greater than *END. The objects pointed | |
105 | to by BEGIN and END may be integers or markers; if the latter, they | |
106 | are coerced to integers. | |
d418ef42 | 107 | |
d4b530ad RS |
108 | When OBJECT is a string, we increment *BEGIN and *END |
109 | to make them origin-one. | |
110 | ||
d418ef42 JA |
111 | Note that buffer points don't correspond to interval indices. |
112 | For example, point-max is 1 greater than the index of the last | |
113 | character. This difference is handled in the caller, which uses | |
114 | the validated points to determine a length, and operates on that. | |
115 | Exceptions are Ftext_properties_at, Fnext_property_change, and | |
116 | Fprevious_property_change which call this function with BEGIN == END. | |
117 | Handle this case specially. | |
118 | ||
77c7bcb1 | 119 | If FORCE is soft (0), it's OK to return NULL. Otherwise, |
ac876a79 JA |
120 | create an interval tree for OBJECT if one doesn't exist, provided |
121 | the object actually contains text. In the current design, if there | |
d4b530ad | 122 | is no text, there can be no text properties. */ |
d418ef42 JA |
123 | |
124 | #define soft 0 | |
125 | #define hard 1 | |
126 | ||
9dd7eec6 | 127 | INTERVAL |
971de7fb | 128 | validate_interval_range (Lisp_Object object, Lisp_Object *begin, Lisp_Object *end, int force) |
d418ef42 JA |
129 | { |
130 | register INTERVAL i; | |
d311d28c | 131 | ptrdiff_t searchpos; |
d4b530ad | 132 | |
b7826503 PJ |
133 | CHECK_STRING_OR_BUFFER (object); |
134 | CHECK_NUMBER_COERCE_MARKER (*begin); | |
135 | CHECK_NUMBER_COERCE_MARKER (*end); | |
d418ef42 JA |
136 | |
137 | /* If we are asked for a point, but from a subr which operates | |
cdf3e5a2 | 138 | on a range, then return nothing. */ |
64a49ca7 | 139 | if (EQ (*begin, *end) && begin != end) |
77c7bcb1 | 140 | return NULL; |
d418ef42 JA |
141 | |
142 | if (XINT (*begin) > XINT (*end)) | |
143 | { | |
d4b530ad RS |
144 | Lisp_Object n; |
145 | n = *begin; | |
d418ef42 | 146 | *begin = *end; |
d4b530ad | 147 | *end = n; |
d418ef42 JA |
148 | } |
149 | ||
5d2fa46f | 150 | if (BUFFERP (object)) |
d418ef42 JA |
151 | { |
152 | register struct buffer *b = XBUFFER (object); | |
153 | ||
d418ef42 JA |
154 | if (!(BUF_BEGV (b) <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
155 | && XINT (*end) <= BUF_ZV (b))) | |
156 | args_out_of_range (*begin, *end); | |
0c94c8d6 | 157 | i = buffer_intervals (b); |
d418ef42 | 158 | |
cdf3e5a2 | 159 | /* If there's no text, there are no properties. */ |
d4b530ad | 160 | if (BUF_BEGV (b) == BUF_ZV (b)) |
77c7bcb1 | 161 | return NULL; |
d4b530ad RS |
162 | |
163 | searchpos = XINT (*begin); | |
d418ef42 JA |
164 | } |
165 | else | |
166 | { | |
d311d28c | 167 | ptrdiff_t len = SCHARS (object); |
d418ef42 | 168 | |
d4b530ad | 169 | if (! (0 <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
943afcc7 | 170 | && XINT (*end) <= len)) |
d418ef42 | 171 | args_out_of_range (*begin, *end); |
ad077db0 | 172 | XSETFASTINT (*begin, XFASTINT (*begin)); |
b1e94638 | 173 | if (begin != end) |
ad077db0 | 174 | XSETFASTINT (*end, XFASTINT (*end)); |
0c94c8d6 | 175 | i = string_intervals (object); |
d4b530ad | 176 | |
943afcc7 | 177 | if (len == 0) |
77c7bcb1 | 178 | return NULL; |
d4b530ad RS |
179 | |
180 | searchpos = XINT (*begin); | |
d418ef42 JA |
181 | } |
182 | ||
77c7bcb1 | 183 | if (!i) |
d418ef42 | 184 | return (force ? create_root_interval (object) : i); |
81f6e55f | 185 | |
d4b530ad | 186 | return find_interval (i, searchpos); |
d418ef42 JA |
187 | } |
188 | ||
189 | /* Validate LIST as a property list. If LIST is not a list, then | |
190 | make one consisting of (LIST nil). Otherwise, verify that LIST | |
cdf3e5a2 | 191 | is even numbered and thus suitable as a plist. */ |
d418ef42 JA |
192 | |
193 | static Lisp_Object | |
971de7fb | 194 | validate_plist (Lisp_Object list) |
d418ef42 JA |
195 | { |
196 | if (NILP (list)) | |
197 | return Qnil; | |
198 | ||
199 | if (CONSP (list)) | |
200 | { | |
ecc0fdd4 PE |
201 | bool odd_length = 0; |
202 | Lisp_Object tail; | |
203 | for (tail = list; CONSP (tail); tail = XCDR (tail)) | |
b1e94638 | 204 | { |
ecc0fdd4 | 205 | odd_length ^= 1; |
b1e94638 JB |
206 | QUIT; |
207 | } | |
ecc0fdd4 | 208 | if (odd_length) |
d418ef42 JA |
209 | error ("Odd length text property list"); |
210 | return list; | |
211 | } | |
212 | ||
213 | return Fcons (list, Fcons (Qnil, Qnil)); | |
214 | } | |
215 | ||
ecc0fdd4 | 216 | /* Return true if interval I has all the properties, |
cdf3e5a2 | 217 | with the same values, of list PLIST. */ |
d418ef42 | 218 | |
ecc0fdd4 | 219 | static bool |
971de7fb | 220 | interval_has_all_properties (Lisp_Object plist, INTERVAL i) |
d418ef42 | 221 | { |
ecc0fdd4 | 222 | Lisp_Object tail1, tail2; |
d418ef42 | 223 | |
cdf3e5a2 | 224 | /* Go through each element of PLIST. */ |
99784d63 | 225 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 226 | { |
ecc0fdd4 PE |
227 | Lisp_Object sym1 = XCAR (tail1); |
228 | bool found = 0; | |
d418ef42 JA |
229 | |
230 | /* Go through I's plist, looking for sym1 */ | |
99784d63 SM |
231 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
232 | if (EQ (sym1, XCAR (tail2))) | |
d418ef42 JA |
233 | { |
234 | /* Found the same property on both lists. If the | |
cdf3e5a2 | 235 | values are unequal, return zero. */ |
99784d63 | 236 | if (! EQ (Fcar (XCDR (tail1)), Fcar (XCDR (tail2)))) |
d418ef42 JA |
237 | return 0; |
238 | ||
224a3131 | 239 | /* Property has same value on both lists; go to next one. */ |
d418ef42 JA |
240 | found = 1; |
241 | break; | |
242 | } | |
243 | ||
244 | if (! found) | |
245 | return 0; | |
246 | } | |
247 | ||
248 | return 1; | |
249 | } | |
250 | ||
ecc0fdd4 | 251 | /* Return true if the plist of interval I has any of the |
cdf3e5a2 | 252 | properties of PLIST, regardless of their values. */ |
d418ef42 | 253 | |
ecc0fdd4 | 254 | static bool |
971de7fb | 255 | interval_has_some_properties (Lisp_Object plist, INTERVAL i) |
d418ef42 | 256 | { |
ecc0fdd4 | 257 | Lisp_Object tail1, tail2, sym; |
d418ef42 | 258 | |
cdf3e5a2 | 259 | /* Go through each element of PLIST. */ |
99784d63 | 260 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 261 | { |
99784d63 | 262 | sym = XCAR (tail1); |
d418ef42 JA |
263 | |
264 | /* Go through i's plist, looking for tail1 */ | |
99784d63 SM |
265 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
266 | if (EQ (sym, XCAR (tail2))) | |
d418ef42 JA |
267 | return 1; |
268 | } | |
269 | ||
270 | return 0; | |
271 | } | |
11713b6d RS |
272 | |
273 | /* Return nonzero if the plist of interval I has any of the | |
274 | property names in LIST, regardless of their values. */ | |
275 | ||
ecc0fdd4 | 276 | static bool |
971de7fb | 277 | interval_has_some_properties_list (Lisp_Object list, INTERVAL i) |
11713b6d | 278 | { |
ecc0fdd4 | 279 | Lisp_Object tail1, tail2, sym; |
11713b6d RS |
280 | |
281 | /* Go through each element of LIST. */ | |
99784d63 | 282 | for (tail1 = list; CONSP (tail1); tail1 = XCDR (tail1)) |
11713b6d | 283 | { |
7d7bbefd | 284 | sym = XCAR (tail1); |
11713b6d RS |
285 | |
286 | /* Go through i's plist, looking for tail1 */ | |
99784d63 | 287 | for (tail2 = i->plist; CONSP (tail2); tail2 = XCDR (XCDR (tail2))) |
11713b6d RS |
288 | if (EQ (sym, XCAR (tail2))) |
289 | return 1; | |
290 | } | |
291 | ||
292 | return 0; | |
293 | } | |
d4b530ad | 294 | \f |
d7b4e137 JB |
295 | /* Changing the plists of individual intervals. */ |
296 | ||
297 | /* Return the value of PROP in property-list PLIST, or Qunbound if it | |
298 | has none. */ | |
64a49ca7 | 299 | static Lisp_Object |
971de7fb | 300 | property_value (Lisp_Object plist, Lisp_Object prop) |
d7b4e137 JB |
301 | { |
302 | Lisp_Object value; | |
303 | ||
304 | while (PLIST_ELT_P (plist, value)) | |
70949dac KR |
305 | if (EQ (XCAR (plist), prop)) |
306 | return XCAR (value); | |
d7b4e137 | 307 | else |
70949dac | 308 | plist = XCDR (value); |
d7b4e137 JB |
309 | |
310 | return Qunbound; | |
311 | } | |
312 | ||
d4b530ad RS |
313 | /* Set the properties of INTERVAL to PROPERTIES, |
314 | and record undo info for the previous values. | |
315 | OBJECT is the string or buffer that INTERVAL belongs to. */ | |
316 | ||
317 | static void | |
971de7fb | 318 | set_properties (Lisp_Object properties, INTERVAL interval, Lisp_Object object) |
d4b530ad | 319 | { |
d7b4e137 | 320 | Lisp_Object sym, value; |
d4b530ad | 321 | |
d7b4e137 | 322 | if (BUFFERP (object)) |
d4b530ad | 323 | { |
d7b4e137 JB |
324 | /* For each property in the old plist which is missing from PROPERTIES, |
325 | or has a different value in PROPERTIES, make an undo record. */ | |
326 | for (sym = interval->plist; | |
327 | PLIST_ELT_P (sym, value); | |
70949dac KR |
328 | sym = XCDR (value)) |
329 | if (! EQ (property_value (properties, XCAR (sym)), | |
330 | XCAR (value))) | |
f7a9275a | 331 | { |
f7a9275a | 332 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 333 | XCAR (sym), XCAR (value), |
f7a9275a RS |
334 | object); |
335 | } | |
d7b4e137 JB |
336 | |
337 | /* For each new property that has no value at all in the old plist, | |
338 | make an undo record binding it to nil, so it will be removed. */ | |
339 | for (sym = properties; | |
340 | PLIST_ELT_P (sym, value); | |
70949dac KR |
341 | sym = XCDR (value)) |
342 | if (EQ (property_value (interval->plist, XCAR (sym)), Qunbound)) | |
f7a9275a | 343 | { |
f7a9275a | 344 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 345 | XCAR (sym), Qnil, |
f7a9275a RS |
346 | object); |
347 | } | |
d4b530ad RS |
348 | } |
349 | ||
350 | /* Store new properties. */ | |
0c94c8d6 | 351 | set_interval_plist (interval, Fcopy_sequence (properties)); |
d4b530ad | 352 | } |
d418ef42 JA |
353 | |
354 | /* Add the properties of PLIST to the interval I, or set | |
355 | the value of I's property to the value of the property on PLIST | |
356 | if they are different. | |
357 | ||
d4b530ad RS |
358 | OBJECT should be the string or buffer the interval is in. |
359 | ||
ecc0fdd4 | 360 | Return true if this changes I (i.e., if any members of PLIST |
d418ef42 JA |
361 | are actually added to I's plist) */ |
362 | ||
ecc0fdd4 | 363 | static bool |
971de7fb | 364 | add_properties (Lisp_Object plist, INTERVAL i, Lisp_Object object) |
d418ef42 | 365 | { |
c98da214 | 366 | Lisp_Object tail1, tail2, sym1, val1; |
ecc0fdd4 | 367 | bool changed = 0; |
c98da214 RS |
368 | struct gcpro gcpro1, gcpro2, gcpro3; |
369 | ||
370 | tail1 = plist; | |
371 | sym1 = Qnil; | |
372 | val1 = Qnil; | |
373 | /* No need to protect OBJECT, because we can GC only in the case | |
374 | where it is a buffer, and live buffers are always protected. | |
375 | I and its plist are also protected, via OBJECT. */ | |
376 | GCPRO3 (tail1, sym1, val1); | |
d418ef42 | 377 | |
cdf3e5a2 | 378 | /* Go through each element of PLIST. */ |
99784d63 | 379 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 380 | { |
ecc0fdd4 | 381 | bool found = 0; |
99784d63 SM |
382 | sym1 = XCAR (tail1); |
383 | val1 = Fcar (XCDR (tail1)); | |
d418ef42 JA |
384 | |
385 | /* Go through I's plist, looking for sym1 */ | |
99784d63 SM |
386 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
387 | if (EQ (sym1, XCAR (tail2))) | |
d418ef42 | 388 | { |
c98da214 RS |
389 | /* No need to gcpro, because tail2 protects this |
390 | and it must be a cons cell (we get an error otherwise). */ | |
3814ccf5 | 391 | register Lisp_Object this_cdr; |
d418ef42 | 392 | |
99784d63 | 393 | this_cdr = XCDR (tail2); |
cdf3e5a2 | 394 | /* Found the property. Now check its value. */ |
d418ef42 JA |
395 | found = 1; |
396 | ||
397 | /* The properties have the same value on both lists. | |
cdf3e5a2 | 398 | Continue to the next property. */ |
734c51b2 | 399 | if (EQ (val1, Fcar (this_cdr))) |
d418ef42 JA |
400 | break; |
401 | ||
d4b530ad | 402 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 403 | if (BUFFERP (object)) |
d4b530ad | 404 | { |
f7a9275a RS |
405 | record_property_change (i->position, LENGTH (i), |
406 | sym1, Fcar (this_cdr), object); | |
d4b530ad RS |
407 | } |
408 | ||
d418ef42 JA |
409 | /* I's property has a different value -- change it */ |
410 | Fsetcar (this_cdr, val1); | |
ecc0fdd4 | 411 | changed = 1; |
d418ef42 JA |
412 | break; |
413 | } | |
414 | ||
415 | if (! found) | |
416 | { | |
d4b530ad | 417 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 418 | if (BUFFERP (object)) |
d4b530ad | 419 | { |
f7a9275a RS |
420 | record_property_change (i->position, LENGTH (i), |
421 | sym1, Qnil, object); | |
d4b530ad | 422 | } |
0c94c8d6 | 423 | set_interval_plist (i, Fcons (sym1, Fcons (val1, i->plist))); |
ecc0fdd4 | 424 | changed = 1; |
d418ef42 JA |
425 | } |
426 | } | |
427 | ||
c98da214 RS |
428 | UNGCPRO; |
429 | ||
d418ef42 JA |
430 | return changed; |
431 | } | |
432 | ||
11713b6d RS |
433 | /* For any members of PLIST, or LIST, |
434 | which are properties of I, remove them from I's plist. | |
435 | (If PLIST is non-nil, use that, otherwise use LIST.) | |
d4b530ad | 436 | OBJECT is the string or buffer containing I. */ |
d418ef42 | 437 | |
ecc0fdd4 | 438 | static bool |
971de7fb | 439 | remove_properties (Lisp_Object plist, Lisp_Object list, INTERVAL i, Lisp_Object object) |
d418ef42 | 440 | { |
ecc0fdd4 PE |
441 | Lisp_Object tail1, tail2, sym, current_plist; |
442 | bool changed = 0; | |
d418ef42 | 443 | |
ecc0fdd4 PE |
444 | /* True means tail1 is a plist, otherwise it is a list. */ |
445 | bool use_plist; | |
11713b6d | 446 | |
3814ccf5 | 447 | current_plist = i->plist; |
11713b6d RS |
448 | |
449 | if (! NILP (plist)) | |
f25d60d6 | 450 | tail1 = plist, use_plist = 1; |
11713b6d | 451 | else |
f25d60d6 | 452 | tail1 = list, use_plist = 0; |
11713b6d RS |
453 | |
454 | /* Go through each element of LIST or PLIST. */ | |
b079118d | 455 | while (CONSP (tail1)) |
d418ef42 | 456 | { |
11713b6d | 457 | sym = XCAR (tail1); |
d418ef42 | 458 | |
11713b6d | 459 | /* First, remove the symbol if it's at the head of the list */ |
b079118d | 460 | while (CONSP (current_plist) && EQ (sym, XCAR (current_plist))) |
d418ef42 | 461 | { |
5d2fa46f | 462 | if (BUFFERP (object)) |
11713b6d RS |
463 | record_property_change (i->position, LENGTH (i), |
464 | sym, XCAR (XCDR (current_plist)), | |
465 | object); | |
d4b530ad | 466 | |
11713b6d | 467 | current_plist = XCDR (XCDR (current_plist)); |
ecc0fdd4 | 468 | changed = 1; |
d418ef42 JA |
469 | } |
470 | ||
11713b6d | 471 | /* Go through I's plist, looking for SYM. */ |
d418ef42 JA |
472 | tail2 = current_plist; |
473 | while (! NILP (tail2)) | |
474 | { | |
3814ccf5 | 475 | register Lisp_Object this; |
11713b6d | 476 | this = XCDR (XCDR (tail2)); |
b079118d | 477 | if (CONSP (this) && EQ (sym, XCAR (this))) |
d418ef42 | 478 | { |
5d2fa46f | 479 | if (BUFFERP (object)) |
11713b6d RS |
480 | record_property_change (i->position, LENGTH (i), |
481 | sym, XCAR (XCDR (this)), object); | |
d4b530ad | 482 | |
11713b6d | 483 | Fsetcdr (XCDR (tail2), XCDR (XCDR (this))); |
ecc0fdd4 | 484 | changed = 1; |
d418ef42 JA |
485 | } |
486 | tail2 = this; | |
487 | } | |
11713b6d RS |
488 | |
489 | /* Advance thru TAIL1 one way or the other. */ | |
f25d60d6 KS |
490 | tail1 = XCDR (tail1); |
491 | if (use_plist && CONSP (tail1)) | |
11713b6d | 492 | tail1 = XCDR (tail1); |
d418ef42 JA |
493 | } |
494 | ||
495 | if (changed) | |
0c94c8d6 | 496 | set_interval_plist (i, current_plist); |
d418ef42 JA |
497 | return changed; |
498 | } | |
d418ef42 | 499 | \f |
81f6e55f | 500 | /* Returns the interval of POSITION in OBJECT. |
cdf3e5a2 RS |
501 | POSITION is BEG-based. */ |
502 | ||
503 | INTERVAL | |
d311d28c | 504 | interval_of (ptrdiff_t position, Lisp_Object object) |
cdf3e5a2 RS |
505 | { |
506 | register INTERVAL i; | |
d311d28c | 507 | ptrdiff_t beg, end; |
cdf3e5a2 RS |
508 | |
509 | if (NILP (object)) | |
510 | XSETBUFFER (object, current_buffer); | |
d0cb872a | 511 | else if (EQ (object, Qt)) |
77c7bcb1 | 512 | return NULL; |
cdf3e5a2 | 513 | |
b7826503 | 514 | CHECK_STRING_OR_BUFFER (object); |
cdf3e5a2 RS |
515 | |
516 | if (BUFFERP (object)) | |
517 | { | |
518 | register struct buffer *b = XBUFFER (object); | |
519 | ||
520 | beg = BUF_BEGV (b); | |
521 | end = BUF_ZV (b); | |
0c94c8d6 | 522 | i = buffer_intervals (b); |
cdf3e5a2 RS |
523 | } |
524 | else | |
525 | { | |
ad077db0 | 526 | beg = 0; |
943afcc7 | 527 | end = SCHARS (object); |
0c94c8d6 | 528 | i = string_intervals (object); |
cdf3e5a2 RS |
529 | } |
530 | ||
531 | if (!(beg <= position && position <= end)) | |
c7ef8e24 | 532 | args_out_of_range (make_number (position), make_number (position)); |
77c7bcb1 DA |
533 | if (beg == end || !i) |
534 | return NULL; | |
81f6e55f | 535 | |
cdf3e5a2 RS |
536 | return find_interval (i, position); |
537 | } | |
538 | \f | |
a7ca3326 | 539 | DEFUN ("text-properties-at", Ftext_properties_at, |
d418ef42 | 540 | Stext_properties_at, 1, 2, 0, |
8c1a1077 | 541 | doc: /* Return the list of properties of the character at POSITION in OBJECT. |
81f6e55f FP |
542 | If the optional second argument OBJECT is a buffer (or nil, which means |
543 | the current buffer), POSITION is a buffer position (integer or marker). | |
544 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 | 545 | If POSITION is at the end of OBJECT, the value is nil. */) |
5842a27b | 546 | (Lisp_Object position, Lisp_Object object) |
d418ef42 JA |
547 | { |
548 | register INTERVAL i; | |
d418ef42 JA |
549 | |
550 | if (NILP (object)) | |
c8a4fc3d | 551 | XSETBUFFER (object, current_buffer); |
d418ef42 | 552 | |
1f5e848a | 553 | i = validate_interval_range (object, &position, &position, soft); |
77c7bcb1 | 554 | if (!i) |
d418ef42 | 555 | return Qnil; |
1f5e848a | 556 | /* If POSITION is at the end of the interval, |
d4b530ad RS |
557 | it means it's the end of OBJECT. |
558 | There are no properties at the very end, | |
559 | since no character follows. */ | |
1f5e848a | 560 | if (XINT (position) == LENGTH (i) + i->position) |
d4b530ad | 561 | return Qnil; |
d418ef42 JA |
562 | |
563 | return i->plist; | |
564 | } | |
565 | ||
a7ca3326 | 566 | DEFUN ("get-text-property", Fget_text_property, Sget_text_property, 2, 3, 0, |
8c1a1077 | 567 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
b4f5313e CY |
568 | OBJECT should be a buffer or a string; if omitted or nil, it defaults |
569 | to the current buffer. | |
8c1a1077 | 570 | If POSITION is at the end of OBJECT, the value is nil. */) |
5842a27b | 571 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
5fbe2a44 | 572 | { |
1f5e848a | 573 | return textget (Ftext_properties_at (position, object), prop); |
5fbe2a44 RS |
574 | } |
575 | ||
bcf97349 | 576 | /* Return the value of char's property PROP, in OBJECT at POSITION. |
8d41abc4 MB |
577 | OBJECT is optional and defaults to the current buffer. |
578 | If OVERLAY is non-0, then in the case that the returned property is from | |
579 | an overlay, the overlay found is returned in *OVERLAY, otherwise nil is | |
580 | returned in *OVERLAY. | |
581 | If POSITION is at the end of OBJECT, the value is nil. | |
582 | If OBJECT is a buffer, then overlay properties are considered as well as | |
583 | text properties. | |
584 | If OBJECT is a window, then that window's buffer is used, but | |
585 | window-specific overlays are considered only if they are associated | |
586 | with OBJECT. */ | |
587 | Lisp_Object | |
971de7fb | 588 | get_char_property_and_overlay (Lisp_Object position, register Lisp_Object prop, Lisp_Object object, Lisp_Object *overlay) |
f5957179 KH |
589 | { |
590 | struct window *w = 0; | |
591 | ||
b7826503 | 592 | CHECK_NUMBER_COERCE_MARKER (position); |
f5957179 KH |
593 | |
594 | if (NILP (object)) | |
c8a4fc3d | 595 | XSETBUFFER (object, current_buffer); |
f5957179 KH |
596 | |
597 | if (WINDOWP (object)) | |
598 | { | |
599 | w = XWINDOW (object); | |
d3d50620 | 600 | object = w->buffer; |
f5957179 KH |
601 | } |
602 | if (BUFFERP (object)) | |
603 | { | |
b081724f | 604 | ptrdiff_t noverlays; |
b5be4dbe | 605 | Lisp_Object *overlay_vec; |
cbc55f55 RS |
606 | struct buffer *obuf = current_buffer; |
607 | ||
dd6f2802 RS |
608 | if (XINT (position) < BUF_BEGV (XBUFFER (object)) |
609 | || XINT (position) > BUF_ZV (XBUFFER (object))) | |
610 | xsignal1 (Qargs_out_of_range, position); | |
611 | ||
cbc55f55 | 612 | set_buffer_temp (XBUFFER (object)); |
f5957179 | 613 | |
b5be4dbe | 614 | GET_OVERLAYS_AT (XINT (position), overlay_vec, noverlays, NULL, 0); |
f5957179 KH |
615 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
616 | ||
cbc55f55 RS |
617 | set_buffer_temp (obuf); |
618 | ||
f5957179 KH |
619 | /* Now check the overlays in order of decreasing priority. */ |
620 | while (--noverlays >= 0) | |
621 | { | |
b5be4dbe | 622 | Lisp_Object tem = Foverlay_get (overlay_vec[noverlays], prop); |
f5957179 | 623 | if (!NILP (tem)) |
8d41abc4 MB |
624 | { |
625 | if (overlay) | |
626 | /* Return the overlay we got the property from. */ | |
627 | *overlay = overlay_vec[noverlays]; | |
628 | return tem; | |
629 | } | |
f5957179 KH |
630 | } |
631 | } | |
8d41abc4 MB |
632 | |
633 | if (overlay) | |
634 | /* Indicate that the return value is not from an overlay. */ | |
635 | *overlay = Qnil; | |
636 | ||
f5957179 KH |
637 | /* Not a buffer, or no appropriate overlay, so fall through to the |
638 | simpler case. */ | |
8d41abc4 MB |
639 | return Fget_text_property (position, prop, object); |
640 | } | |
641 | ||
a7ca3326 | 642 | DEFUN ("get-char-property", Fget_char_property, Sget_char_property, 2, 3, 0, |
8c1a1077 | 643 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
8faef085 | 644 | Both overlay properties and text properties are checked. |
8c1a1077 PJ |
645 | OBJECT is optional and defaults to the current buffer. |
646 | If POSITION is at the end of OBJECT, the value is nil. | |
647 | If OBJECT is a buffer, then overlay properties are considered as well as | |
648 | text properties. | |
649 | If OBJECT is a window, then that window's buffer is used, but window-specific | |
650 | overlays are considered only if they are associated with OBJECT. */) | |
5842a27b | 651 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
8d41abc4 MB |
652 | { |
653 | return get_char_property_and_overlay (position, prop, object, 0); | |
f5957179 | 654 | } |
97a1bc63 LT |
655 | |
656 | DEFUN ("get-char-property-and-overlay", Fget_char_property_and_overlay, | |
657 | Sget_char_property_and_overlay, 2, 3, 0, | |
658 | doc: /* Like `get-char-property', but with extra overlay information. | |
95555145 RS |
659 | The value is a cons cell. Its car is the return value of `get-char-property' |
660 | with the same arguments--that is, the value of POSITION's property | |
661 | PROP in OBJECT. Its cdr is the overlay in which the property was | |
97a1bc63 | 662 | found, or nil, if it was found as a text property or not found at all. |
95555145 | 663 | |
97a1bc63 LT |
664 | OBJECT is optional and defaults to the current buffer. OBJECT may be |
665 | a string, a buffer or a window. For strings, the cdr of the return | |
666 | value is always nil, since strings do not have overlays. If OBJECT is | |
667 | a window, then that window's buffer is used, but window-specific | |
668 | overlays are considered only if they are associated with OBJECT. If | |
669 | POSITION is at the end of OBJECT, both car and cdr are nil. */) | |
5842a27b | 670 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
97a1bc63 LT |
671 | { |
672 | Lisp_Object overlay; | |
673 | Lisp_Object val | |
674 | = get_char_property_and_overlay (position, prop, object, &overlay); | |
6519d955 | 675 | return Fcons (val, overlay); |
97a1bc63 LT |
676 | } |
677 | ||
fcab51aa | 678 | \f |
a7ca3326 | 679 | DEFUN ("next-char-property-change", Fnext_char_property_change, |
fcab51aa | 680 | Snext_char_property_change, 1, 2, 0, |
8c1a1077 | 681 | doc: /* Return the position of next text property or overlay change. |
81f6e55f FP |
682 | This scans characters forward in the current buffer from POSITION till |
683 | it finds a change in some text property, or the beginning or end of an | |
684 | overlay, and returns the position of that. | |
85cc6738 | 685 | If none is found up to (point-max), the function returns (point-max). |
8c1a1077 | 686 | |
a41292c2 | 687 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
688 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
689 | LIMIT is a no-op if it is greater than (point-max). */) | |
5842a27b | 690 | (Lisp_Object position, Lisp_Object limit) |
fcab51aa RS |
691 | { |
692 | Lisp_Object temp; | |
693 | ||
694 | temp = Fnext_overlay_change (position); | |
695 | if (! NILP (limit)) | |
696 | { | |
d615870a | 697 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
698 | if (XINT (limit) < XINT (temp)) |
699 | temp = limit; | |
700 | } | |
701 | return Fnext_property_change (position, Qnil, temp); | |
702 | } | |
703 | ||
a7ca3326 | 704 | DEFUN ("previous-char-property-change", Fprevious_char_property_change, |
fcab51aa | 705 | Sprevious_char_property_change, 1, 2, 0, |
8c1a1077 | 706 | doc: /* Return the position of previous text property or overlay change. |
81f6e55f FP |
707 | Scans characters backward in the current buffer from POSITION till it |
708 | finds a change in some text property, or the beginning or end of an | |
709 | overlay, and returns the position of that. | |
85cc6738 | 710 | If none is found since (point-min), the function returns (point-min). |
8c1a1077 | 711 | |
a41292c2 | 712 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
713 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
714 | LIMIT is a no-op if it is less than (point-min). */) | |
5842a27b | 715 | (Lisp_Object position, Lisp_Object limit) |
fcab51aa RS |
716 | { |
717 | Lisp_Object temp; | |
f5957179 | 718 | |
fcab51aa RS |
719 | temp = Fprevious_overlay_change (position); |
720 | if (! NILP (limit)) | |
721 | { | |
d615870a | 722 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
723 | if (XINT (limit) > XINT (temp)) |
724 | temp = limit; | |
725 | } | |
726 | return Fprevious_property_change (position, Qnil, temp); | |
727 | } | |
0b0737d1 GM |
728 | |
729 | ||
a7ca3326 | 730 | DEFUN ("next-single-char-property-change", Fnext_single_char_property_change, |
b7e047fb | 731 | Snext_single_char_property_change, 2, 4, 0, |
8c1a1077 PJ |
732 | doc: /* Return the position of next text property or overlay change for a specific property. |
733 | Scans characters forward from POSITION till it finds | |
734 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
735 | If the optional third argument OBJECT is a buffer (or nil, which means |
736 | the current buffer), POSITION is a buffer position (integer or marker). | |
737 | If OBJECT is a string, POSITION is a 0-based index into it. | |
738 | ||
85cc6738 RS |
739 | In a string, scan runs to the end of the string. |
740 | In a buffer, it runs to (point-max), and the value cannot exceed that. | |
741 | ||
8c1a1077 PJ |
742 | The property values are compared with `eq'. |
743 | If the property is constant all the way to the end of OBJECT, return the | |
744 | last valid position in OBJECT. | |
745 | If the optional fourth argument LIMIT is non-nil, don't search | |
746 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 747 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
0b0737d1 GM |
748 | { |
749 | if (STRINGP (object)) | |
750 | { | |
b7e047fb MB |
751 | position = Fnext_single_property_change (position, prop, object, limit); |
752 | if (NILP (position)) | |
0b0737d1 GM |
753 | { |
754 | if (NILP (limit)) | |
d5db4077 | 755 | position = make_number (SCHARS (object)); |
0b0737d1 | 756 | else |
d615870a DK |
757 | { |
758 | CHECK_NUMBER (limit); | |
759 | position = limit; | |
760 | } | |
0b0737d1 GM |
761 | } |
762 | } | |
763 | else | |
764 | { | |
765 | Lisp_Object initial_value, value; | |
d311d28c | 766 | ptrdiff_t count = SPECPDL_INDEX (); |
0b0737d1 | 767 | |
b7e047fb | 768 | if (! NILP (object)) |
b7826503 | 769 | CHECK_BUFFER (object); |
81f6e55f | 770 | |
0b0737d1 GM |
771 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
772 | { | |
66322887 | 773 | record_unwind_current_buffer (); |
0b0737d1 GM |
774 | Fset_buffer (object); |
775 | } | |
776 | ||
d615870a DK |
777 | CHECK_NUMBER_COERCE_MARKER (position); |
778 | ||
b7e047fb | 779 | initial_value = Fget_char_property (position, prop, object); |
81f6e55f | 780 | |
b7e047fb | 781 | if (NILP (limit)) |
85cc6738 | 782 | XSETFASTINT (limit, ZV); |
b7e047fb | 783 | else |
b7826503 | 784 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 785 | |
85cc6738 | 786 | if (XFASTINT (position) >= XFASTINT (limit)) |
0b0737d1 | 787 | { |
85cc6738 RS |
788 | position = limit; |
789 | if (XFASTINT (position) > ZV) | |
790 | XSETFASTINT (position, ZV); | |
0b0737d1 | 791 | } |
85cc6738 RS |
792 | else |
793 | while (1) | |
794 | { | |
795 | position = Fnext_char_property_change (position, limit); | |
796 | if (XFASTINT (position) >= XFASTINT (limit)) | |
797 | { | |
798 | position = limit; | |
799 | break; | |
800 | } | |
801 | ||
802 | value = Fget_char_property (position, prop, object); | |
803 | if (!EQ (value, initial_value)) | |
804 | break; | |
805 | } | |
0b0737d1 GM |
806 | |
807 | unbind_to (count, Qnil); | |
808 | } | |
809 | ||
b7e047fb | 810 | return position; |
0b0737d1 GM |
811 | } |
812 | ||
a7ca3326 | 813 | DEFUN ("previous-single-char-property-change", |
b7e047fb MB |
814 | Fprevious_single_char_property_change, |
815 | Sprevious_single_char_property_change, 2, 4, 0, | |
8c1a1077 PJ |
816 | doc: /* Return the position of previous text property or overlay change for a specific property. |
817 | Scans characters backward from POSITION till it finds | |
818 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
819 | If the optional third argument OBJECT is a buffer (or nil, which means |
820 | the current buffer), POSITION is a buffer position (integer or marker). | |
821 | If OBJECT is a string, POSITION is a 0-based index into it. | |
822 | ||
85cc6738 RS |
823 | In a string, scan runs to the start of the string. |
824 | In a buffer, it runs to (point-min), and the value cannot be less than that. | |
825 | ||
8c1a1077 PJ |
826 | The property values are compared with `eq'. |
827 | If the property is constant all the way to the start of OBJECT, return the | |
828 | first valid position in OBJECT. | |
e531bdff DA |
829 | If the optional fourth argument LIMIT is non-nil, don't search back past |
830 | position LIMIT; return LIMIT if nothing is found before reaching LIMIT. */) | |
5842a27b | 831 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
b7e047fb MB |
832 | { |
833 | if (STRINGP (object)) | |
834 | { | |
835 | position = Fprevious_single_property_change (position, prop, object, limit); | |
836 | if (NILP (position)) | |
837 | { | |
838 | if (NILP (limit)) | |
1e02f3cb | 839 | position = make_number (0); |
b7e047fb | 840 | else |
d615870a DK |
841 | { |
842 | CHECK_NUMBER (limit); | |
843 | position = limit; | |
844 | } | |
b7e047fb MB |
845 | } |
846 | } | |
847 | else | |
848 | { | |
d311d28c | 849 | ptrdiff_t count = SPECPDL_INDEX (); |
b7e047fb MB |
850 | |
851 | if (! NILP (object)) | |
b7826503 | 852 | CHECK_BUFFER (object); |
81f6e55f | 853 | |
b7e047fb MB |
854 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
855 | { | |
66322887 | 856 | record_unwind_current_buffer (); |
b7e047fb MB |
857 | Fset_buffer (object); |
858 | } | |
81f6e55f | 859 | |
d615870a DK |
860 | CHECK_NUMBER_COERCE_MARKER (position); |
861 | ||
b7e047fb | 862 | if (NILP (limit)) |
85cc6738 | 863 | XSETFASTINT (limit, BEGV); |
b7e047fb | 864 | else |
b7826503 | 865 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 866 | |
ce6b02e0 | 867 | if (XFASTINT (position) <= XFASTINT (limit)) |
85cc6738 RS |
868 | { |
869 | position = limit; | |
870 | if (XFASTINT (position) < BEGV) | |
871 | XSETFASTINT (position, BEGV); | |
872 | } | |
ce6b02e0 | 873 | else |
b7e047fb | 874 | { |
85cc6738 RS |
875 | Lisp_Object initial_value |
876 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
877 | prop, object); | |
81f6e55f | 878 | |
85cc6738 | 879 | while (1) |
ce6b02e0 MB |
880 | { |
881 | position = Fprevious_char_property_change (position, limit); | |
0b0737d1 | 882 | |
ce6b02e0 MB |
883 | if (XFASTINT (position) <= XFASTINT (limit)) |
884 | { | |
885 | position = limit; | |
886 | break; | |
887 | } | |
888 | else | |
889 | { | |
85cc6738 RS |
890 | Lisp_Object value |
891 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
892 | prop, object); | |
ce6b02e0 MB |
893 | |
894 | if (!EQ (value, initial_value)) | |
895 | break; | |
896 | } | |
897 | } | |
b7e047fb MB |
898 | } |
899 | ||
900 | unbind_to (count, Qnil); | |
901 | } | |
902 | ||
903 | return position; | |
904 | } | |
fcab51aa | 905 | \f |
a7ca3326 | 906 | DEFUN ("next-property-change", Fnext_property_change, |
111b637d | 907 | Snext_property_change, 1, 3, 0, |
8c1a1077 PJ |
908 | doc: /* Return the position of next property change. |
909 | Scans characters forward from POSITION in OBJECT till it finds | |
910 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
911 | If the optional second argument OBJECT is a buffer (or nil, which means |
912 | the current buffer), POSITION is a buffer position (integer or marker). | |
913 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
914 | Return nil if the property is constant all the way to the end of OBJECT. |
915 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
916 | ||
917 | If the optional third argument LIMIT is non-nil, don't search | |
918 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 919 | (Lisp_Object position, Lisp_Object object, Lisp_Object limit) |
d418ef42 JA |
920 | { |
921 | register INTERVAL i, next; | |
922 | ||
5fbe2a44 | 923 | if (NILP (object)) |
c8a4fc3d | 924 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 925 | |
3a232704 | 926 | if (!NILP (limit) && !EQ (limit, Qt)) |
b7826503 | 927 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 928 | |
1f5e848a | 929 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 | 930 | |
041aa96f RS |
931 | /* If LIMIT is t, return start of next interval--don't |
932 | bother checking further intervals. */ | |
933 | if (EQ (limit, Qt)) | |
934 | { | |
77c7bcb1 | 935 | if (!i) |
44214c1b RS |
936 | next = i; |
937 | else | |
938 | next = next_interval (i); | |
81f6e55f | 939 | |
77c7bcb1 | 940 | if (!next) |
1f5e848a | 941 | XSETFASTINT (position, (STRINGP (object) |
d5db4077 | 942 | ? SCHARS (object) |
1f5e848a | 943 | : BUF_ZV (XBUFFER (object)))); |
c7b6dfa6 | 944 | else |
ad077db0 | 945 | XSETFASTINT (position, next->position); |
1f5e848a | 946 | return position; |
041aa96f RS |
947 | } |
948 | ||
77c7bcb1 | 949 | if (!i) |
44214c1b RS |
950 | return limit; |
951 | ||
952 | next = next_interval (i); | |
953 | ||
77c7bcb1 | 954 | while (next && intervals_equal (i, next) |
ad077db0 | 955 | && (NILP (limit) || next->position < XFASTINT (limit))) |
d418ef42 JA |
956 | next = next_interval (next); |
957 | ||
77c7bcb1 | 958 | if (!next |
52c0f270 CY |
959 | || (next->position |
960 | >= (INTEGERP (limit) | |
961 | ? XFASTINT (limit) | |
962 | : (STRINGP (object) | |
963 | ? SCHARS (object) | |
964 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 965 | return limit; |
52c0f270 CY |
966 | else |
967 | return make_number (next->position); | |
19e1c426 RS |
968 | } |
969 | ||
a7ca3326 | 970 | DEFUN ("next-single-property-change", Fnext_single_property_change, |
111b637d | 971 | Snext_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
972 | doc: /* Return the position of next property change for a specific property. |
973 | Scans characters forward from POSITION till it finds | |
974 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
975 | If the optional third argument OBJECT is a buffer (or nil, which means |
976 | the current buffer), POSITION is a buffer position (integer or marker). | |
977 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
978 | The property values are compared with `eq'. |
979 | Return nil if the property is constant all the way to the end of OBJECT. | |
980 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
981 | ||
982 | If the optional fourth argument LIMIT is non-nil, don't search | |
983 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 984 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
9c79dd1b JA |
985 | { |
986 | register INTERVAL i, next; | |
987 | register Lisp_Object here_val; | |
988 | ||
5fbe2a44 | 989 | if (NILP (object)) |
c8a4fc3d | 990 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 991 | |
1387d54e | 992 | if (!NILP (limit)) |
b7826503 | 993 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 994 | |
1f5e848a | 995 | i = validate_interval_range (object, &position, &position, soft); |
77c7bcb1 | 996 | if (!i) |
111b637d | 997 | return limit; |
9c79dd1b | 998 | |
6a0486dd | 999 | here_val = textget (i->plist, prop); |
9c79dd1b | 1000 | next = next_interval (i); |
77c7bcb1 | 1001 | while (next |
111b637d | 1002 | && EQ (here_val, textget (next->plist, prop)) |
ad077db0 | 1003 | && (NILP (limit) || next->position < XFASTINT (limit))) |
9c79dd1b JA |
1004 | next = next_interval (next); |
1005 | ||
77c7bcb1 | 1006 | if (!next |
52c0f270 CY |
1007 | || (next->position |
1008 | >= (INTEGERP (limit) | |
1009 | ? XFASTINT (limit) | |
1010 | : (STRINGP (object) | |
1011 | ? SCHARS (object) | |
1012 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 1013 | return limit; |
52c0f270 CY |
1014 | else |
1015 | return make_number (next->position); | |
9c79dd1b JA |
1016 | } |
1017 | ||
a7ca3326 | 1018 | DEFUN ("previous-property-change", Fprevious_property_change, |
111b637d | 1019 | Sprevious_property_change, 1, 3, 0, |
8c1a1077 PJ |
1020 | doc: /* Return the position of previous property change. |
1021 | Scans characters backwards from POSITION in OBJECT till it finds | |
1022 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
1023 | If the optional second argument OBJECT is a buffer (or nil, which means |
1024 | the current buffer), POSITION is a buffer position (integer or marker). | |
1025 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1026 | Return nil if the property is constant all the way to the start of OBJECT. |
1027 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1028 | ||
1029 | If the optional third argument LIMIT is non-nil, don't search | |
1030 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
5842a27b | 1031 | (Lisp_Object position, Lisp_Object object, Lisp_Object limit) |
d418ef42 JA |
1032 | { |
1033 | register INTERVAL i, previous; | |
1034 | ||
5fbe2a44 | 1035 | if (NILP (object)) |
c8a4fc3d | 1036 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1037 | |
1387d54e | 1038 | if (!NILP (limit)) |
b7826503 | 1039 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1040 | |
1f5e848a | 1041 | i = validate_interval_range (object, &position, &position, soft); |
77c7bcb1 | 1042 | if (!i) |
111b637d | 1043 | return limit; |
d418ef42 | 1044 | |
53b7feec | 1045 | /* Start with the interval containing the char before point. */ |
1f5e848a | 1046 | if (i->position == XFASTINT (position)) |
53b7feec RS |
1047 | i = previous_interval (i); |
1048 | ||
d418ef42 | 1049 | previous = previous_interval (i); |
77c7bcb1 | 1050 | while (previous && intervals_equal (previous, i) |
111b637d | 1051 | && (NILP (limit) |
ad077db0 | 1052 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
d418ef42 | 1053 | previous = previous_interval (previous); |
d418ef42 | 1054 | |
77c7bcb1 | 1055 | if (!previous |
52c0f270 CY |
1056 | || (previous->position + LENGTH (previous) |
1057 | <= (INTEGERP (limit) | |
1058 | ? XFASTINT (limit) | |
1059 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1060 | return limit; | |
1061 | else | |
1062 | return make_number (previous->position + LENGTH (previous)); | |
d418ef42 JA |
1063 | } |
1064 | ||
a7ca3326 | 1065 | DEFUN ("previous-single-property-change", Fprevious_single_property_change, |
111b637d | 1066 | Sprevious_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
1067 | doc: /* Return the position of previous property change for a specific property. |
1068 | Scans characters backward from POSITION till it finds | |
1069 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
1070 | If the optional third argument OBJECT is a buffer (or nil, which means |
1071 | the current buffer), POSITION is a buffer position (integer or marker). | |
1072 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1073 | The property values are compared with `eq'. |
1074 | Return nil if the property is constant all the way to the start of OBJECT. | |
1075 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1076 | ||
1077 | If the optional fourth argument LIMIT is non-nil, don't search | |
1078 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
5842a27b | 1079 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
9c79dd1b JA |
1080 | { |
1081 | register INTERVAL i, previous; | |
1082 | register Lisp_Object here_val; | |
1083 | ||
5fbe2a44 | 1084 | if (NILP (object)) |
c8a4fc3d | 1085 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1086 | |
1387d54e | 1087 | if (!NILP (limit)) |
b7826503 | 1088 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1089 | |
1f5e848a | 1090 | i = validate_interval_range (object, &position, &position, soft); |
9c79dd1b | 1091 | |
53b7feec | 1092 | /* Start with the interval containing the char before point. */ |
77c7bcb1 | 1093 | if (i && i->position == XFASTINT (position)) |
53b7feec RS |
1094 | i = previous_interval (i); |
1095 | ||
77c7bcb1 | 1096 | if (!i) |
6873cfa3 KH |
1097 | return limit; |
1098 | ||
6a0486dd | 1099 | here_val = textget (i->plist, prop); |
9c79dd1b | 1100 | previous = previous_interval (i); |
77c7bcb1 | 1101 | while (previous |
111b637d RS |
1102 | && EQ (here_val, textget (previous->plist, prop)) |
1103 | && (NILP (limit) | |
ad077db0 | 1104 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
9c79dd1b | 1105 | previous = previous_interval (previous); |
9c79dd1b | 1106 | |
77c7bcb1 | 1107 | if (!previous |
52c0f270 CY |
1108 | || (previous->position + LENGTH (previous) |
1109 | <= (INTEGERP (limit) | |
1110 | ? XFASTINT (limit) | |
1111 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1112 | return limit; | |
1113 | else | |
1114 | return make_number (previous->position + LENGTH (previous)); | |
9c79dd1b | 1115 | } |
fcab51aa | 1116 | \f |
c98da214 RS |
1117 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1118 | ||
a7ca3326 | 1119 | DEFUN ("add-text-properties", Fadd_text_properties, |
5fbe2a44 | 1120 | Sadd_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1121 | doc: /* Add properties to the text from START to END. |
1122 | The third argument PROPERTIES is a property list | |
81f6e55f FP |
1123 | specifying the property values to add. If the optional fourth argument |
1124 | OBJECT is a buffer (or nil, which means the current buffer), | |
1125 | START and END are buffer positions (integers or markers). | |
1126 | If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 | 1127 | Return t if any property value actually changed, nil otherwise. */) |
5842a27b | 1128 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
d418ef42 | 1129 | { |
ecc0fdd4 PE |
1130 | INTERVAL i, unchanged; |
1131 | ptrdiff_t s, len; | |
1132 | bool modified = 0; | |
c98da214 | 1133 | struct gcpro gcpro1; |
d418ef42 JA |
1134 | |
1135 | properties = validate_plist (properties); | |
1136 | if (NILP (properties)) | |
1137 | return Qnil; | |
1138 | ||
5fbe2a44 | 1139 | if (NILP (object)) |
c8a4fc3d | 1140 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1141 | |
d418ef42 | 1142 | i = validate_interval_range (object, &start, &end, hard); |
77c7bcb1 | 1143 | if (!i) |
d418ef42 JA |
1144 | return Qnil; |
1145 | ||
1146 | s = XINT (start); | |
1147 | len = XINT (end) - s; | |
1148 | ||
c98da214 RS |
1149 | /* No need to protect OBJECT, because we GC only if it's a buffer, |
1150 | and live buffers are always protected. */ | |
1151 | GCPRO1 (properties); | |
1152 | ||
0248b0d7 EZ |
1153 | /* If this interval already has the properties, we can skip it. */ |
1154 | if (interval_has_all_properties (properties, i)) | |
d418ef42 | 1155 | { |
ecc0fdd4 PE |
1156 | ptrdiff_t got = LENGTH (i) - (s - i->position); |
1157 | ||
1158 | do | |
1159 | { | |
1160 | if (got >= len) | |
1161 | RETURN_UNGCPRO (Qnil); | |
1162 | len -= got; | |
1163 | i = next_interval (i); | |
1164 | got = LENGTH (i); | |
1165 | } | |
1166 | while (interval_has_all_properties (properties, i)); | |
0248b0d7 EZ |
1167 | } |
1168 | else if (i->position != s) | |
1169 | { | |
1170 | /* If we're not starting on an interval boundary, we have to | |
1171 | split this interval. */ | |
1172 | unchanged = i; | |
1173 | i = split_interval_right (unchanged, s - unchanged->position); | |
1174 | copy_properties (unchanged, i); | |
d418ef42 JA |
1175 | } |
1176 | ||
2a631db1 | 1177 | if (BUFFERP (object)) |
20edc1c9 | 1178 | modify_region (object, start, end); |
26c76ace | 1179 | |
daa5e28f | 1180 | /* We are at the beginning of interval I, with LEN chars to scan. */ |
caa31568 | 1181 | for (;;) |
d418ef42 | 1182 | { |
cce7fefc | 1183 | eassert (i != 0); |
d4b530ad | 1184 | |
d418ef42 JA |
1185 | if (LENGTH (i) >= len) |
1186 | { | |
c98da214 RS |
1187 | /* We can UNGCPRO safely here, because there will be just |
1188 | one more chance to gc, in the next call to add_properties, | |
1189 | and after that we will not need PROPERTIES or OBJECT again. */ | |
1190 | UNGCPRO; | |
1191 | ||
d418ef42 | 1192 | if (interval_has_all_properties (properties, i)) |
26c76ace | 1193 | { |
2a631db1 RS |
1194 | if (BUFFERP (object)) |
1195 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1196 | XINT (end) - XINT (start)); | |
26c76ace | 1197 | |
0248b0d7 EZ |
1198 | eassert (modified); |
1199 | return Qt; | |
26c76ace | 1200 | } |
d418ef42 JA |
1201 | |
1202 | if (LENGTH (i) == len) | |
1203 | { | |
d4b530ad | 1204 | add_properties (properties, i, object); |
2a631db1 RS |
1205 | if (BUFFERP (object)) |
1206 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1207 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1208 | return Qt; |
1209 | } | |
1210 | ||
1211 | /* i doesn't have the properties, and goes past the change limit */ | |
1212 | unchanged = i; | |
ad9c1940 | 1213 | i = split_interval_left (unchanged, len); |
d418ef42 | 1214 | copy_properties (unchanged, i); |
d4b530ad | 1215 | add_properties (properties, i, object); |
2a631db1 RS |
1216 | if (BUFFERP (object)) |
1217 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1218 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1219 | return Qt; |
1220 | } | |
1221 | ||
1222 | len -= LENGTH (i); | |
ecc0fdd4 | 1223 | modified |= add_properties (properties, i, object); |
d418ef42 JA |
1224 | i = next_interval (i); |
1225 | } | |
1226 | } | |
1227 | ||
c98da214 RS |
1228 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1229 | ||
a7ca3326 | 1230 | DEFUN ("put-text-property", Fput_text_property, |
d4b530ad | 1231 | Sput_text_property, 4, 5, 0, |
8c1a1077 PJ |
1232 | doc: /* Set one property of the text from START to END. |
1233 | The third and fourth arguments PROPERTY and VALUE | |
1234 | specify the property to add. | |
81f6e55f FP |
1235 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1236 | the current buffer), START and END are buffer positions (integers or | |
1237 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1238 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
d4b530ad RS |
1239 | { |
1240 | Fadd_text_properties (start, end, | |
1f5e848a | 1241 | Fcons (property, Fcons (value, Qnil)), |
d4b530ad RS |
1242 | object); |
1243 | return Qnil; | |
1244 | } | |
1245 | ||
a7ca3326 | 1246 | DEFUN ("set-text-properties", Fset_text_properties, |
5fbe2a44 | 1247 | Sset_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1248 | doc: /* Completely replace properties of text from START to END. |
1249 | The third argument PROPERTIES is the new property list. | |
81f6e55f FP |
1250 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1251 | the current buffer), START and END are buffer positions (integers or | |
1252 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 PJ |
1253 | If PROPERTIES is nil, the effect is to remove all properties from |
1254 | the designated part of OBJECT. */) | |
5842a27b | 1255 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
0087ade6 GM |
1256 | { |
1257 | return set_text_properties (start, end, properties, object, Qt); | |
1258 | } | |
1259 | ||
1260 | ||
1261 | /* Replace properties of text from START to END with new list of | |
1262 | properties PROPERTIES. OBJECT is the buffer or string containing | |
1263 | the text. OBJECT nil means use the current buffer. | |
9c345213 AM |
1264 | COHERENT_CHANGE_P nil means this is being called as an internal |
1265 | subroutine, rather than as a change primitive with checking of | |
1266 | read-only, invoking change hooks, etc.. Value is nil if the | |
1267 | function _detected_ that it did not replace any properties, non-nil | |
1268 | otherwise. */ | |
0087ade6 GM |
1269 | |
1270 | Lisp_Object | |
971de7fb | 1271 | set_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object, Lisp_Object coherent_change_p) |
d418ef42 | 1272 | { |
28ff4293 | 1273 | register INTERVAL i; |
33d7d0df RS |
1274 | Lisp_Object ostart, oend; |
1275 | ||
1276 | ostart = start; | |
1277 | oend = end; | |
d418ef42 | 1278 | |
1f5e848a | 1279 | properties = validate_plist (properties); |
d418ef42 | 1280 | |
5fbe2a44 | 1281 | if (NILP (object)) |
c8a4fc3d | 1282 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1283 | |
919fa9cb RS |
1284 | /* If we want no properties for a whole string, |
1285 | get rid of its intervals. */ | |
1f5e848a | 1286 | if (NILP (properties) && STRINGP (object) |
919fa9cb | 1287 | && XFASTINT (start) == 0 |
d5db4077 | 1288 | && XFASTINT (end) == SCHARS (object)) |
919fa9cb | 1289 | { |
0c94c8d6 | 1290 | if (!string_intervals (object)) |
537562fa | 1291 | return Qnil; |
26c76ace | 1292 | |
0c94c8d6 | 1293 | set_string_intervals (object, NULL); |
919fa9cb RS |
1294 | return Qt; |
1295 | } | |
1296 | ||
facc570e | 1297 | i = validate_interval_range (object, &start, &end, soft); |
919fa9cb | 1298 | |
77c7bcb1 | 1299 | if (!i) |
facc570e | 1300 | { |
1f5e848a EN |
1301 | /* If buffer has no properties, and we want none, return now. */ |
1302 | if (NILP (properties)) | |
facc570e RS |
1303 | return Qnil; |
1304 | ||
33d7d0df RS |
1305 | /* Restore the original START and END values |
1306 | because validate_interval_range increments them for strings. */ | |
1307 | start = ostart; | |
1308 | end = oend; | |
1309 | ||
facc570e RS |
1310 | i = validate_interval_range (object, &start, &end, hard); |
1311 | /* This can return if start == end. */ | |
77c7bcb1 | 1312 | if (!i) |
facc570e RS |
1313 | return Qnil; |
1314 | } | |
d418ef42 | 1315 | |
9c345213 | 1316 | if (BUFFERP (object) && !NILP (coherent_change_p)) |
20edc1c9 | 1317 | modify_region (object, start, end); |
26c76ace | 1318 | |
78ff4175 RS |
1319 | set_text_properties_1 (start, end, properties, object, i); |
1320 | ||
9c345213 | 1321 | if (BUFFERP (object) && !NILP (coherent_change_p)) |
78ff4175 RS |
1322 | signal_after_change (XINT (start), XINT (end) - XINT (start), |
1323 | XINT (end) - XINT (start)); | |
1324 | return Qt; | |
1325 | } | |
1326 | ||
1327 | /* Replace properties of text from START to END with new list of | |
1687fb14 | 1328 | properties PROPERTIES. OBJECT is the buffer or string containing |
78ff4175 | 1329 | the text. This does not obey any hooks. |
1687fb14 | 1330 | You should provide the interval that START is located in as I. |
49f68fd2 | 1331 | START and END can be in any order. */ |
78ff4175 RS |
1332 | |
1333 | void | |
1687fb14 | 1334 | set_text_properties_1 (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object, INTERVAL i) |
78ff4175 | 1335 | { |
77c7bcb1 | 1336 | register INTERVAL prev_changed = NULL; |
d311d28c | 1337 | register ptrdiff_t s, len; |
78ff4175 RS |
1338 | INTERVAL unchanged; |
1339 | ||
67769ffc | 1340 | if (XINT (start) < XINT (end)) |
49f68fd2 | 1341 | { |
67769ffc PE |
1342 | s = XINT (start); |
1343 | len = XINT (end) - s; | |
49f68fd2 | 1344 | } |
67769ffc PE |
1345 | else if (XINT (end) < XINT (start)) |
1346 | { | |
1347 | s = XINT (end); | |
1348 | len = XINT (start) - s; | |
1349 | } | |
1350 | else | |
1351 | return; | |
49f68fd2 | 1352 | |
1687fb14 | 1353 | eassert (i); |
78ff4175 | 1354 | |
d418ef42 JA |
1355 | if (i->position != s) |
1356 | { | |
1357 | unchanged = i; | |
ad9c1940 | 1358 | i = split_interval_right (unchanged, s - unchanged->position); |
7855e674 | 1359 | |
d418ef42 JA |
1360 | if (LENGTH (i) > len) |
1361 | { | |
9c79dd1b | 1362 | copy_properties (unchanged, i); |
ad9c1940 | 1363 | i = split_interval_left (i, len); |
1687fb14 | 1364 | set_properties (properties, i, object); |
78ff4175 | 1365 | return; |
d418ef42 JA |
1366 | } |
1367 | ||
1687fb14 | 1368 | set_properties (properties, i, object); |
daa5e28f | 1369 | |
9c79dd1b | 1370 | if (LENGTH (i) == len) |
78ff4175 | 1371 | return; |
9c79dd1b JA |
1372 | |
1373 | prev_changed = i; | |
d418ef42 JA |
1374 | len -= LENGTH (i); |
1375 | i = next_interval (i); | |
1376 | } | |
1377 | ||
1e792e4d PE |
1378 | /* We are starting at the beginning of an interval I. LEN is positive. */ |
1379 | do | |
d418ef42 | 1380 | { |
cce7fefc | 1381 | eassert (i != 0); |
d4b530ad | 1382 | |
d418ef42 JA |
1383 | if (LENGTH (i) >= len) |
1384 | { | |
cd7d971d | 1385 | if (LENGTH (i) > len) |
ad9c1940 | 1386 | i = split_interval_left (i, len); |
d418ef42 | 1387 | |
6f232881 RS |
1388 | /* We have to call set_properties even if we are going to |
1389 | merge the intervals, so as to make the undo records | |
1390 | and cause redisplay to happen. */ | |
1687fb14 | 1391 | set_properties (properties, i, object); |
77c7bcb1 | 1392 | if (prev_changed) |
9c79dd1b | 1393 | merge_interval_left (i); |
78ff4175 | 1394 | return; |
d418ef42 JA |
1395 | } |
1396 | ||
1397 | len -= LENGTH (i); | |
6f232881 RS |
1398 | |
1399 | /* We have to call set_properties even if we are going to | |
1400 | merge the intervals, so as to make the undo records | |
1401 | and cause redisplay to happen. */ | |
1687fb14 | 1402 | set_properties (properties, i, object); |
77c7bcb1 | 1403 | if (!prev_changed) |
6f232881 | 1404 | prev_changed = i; |
9c79dd1b JA |
1405 | else |
1406 | prev_changed = i = merge_interval_left (i); | |
1407 | ||
d418ef42 JA |
1408 | i = next_interval (i); |
1409 | } | |
1e792e4d | 1410 | while (len > 0); |
d418ef42 JA |
1411 | } |
1412 | ||
a7ca3326 | 1413 | DEFUN ("remove-text-properties", Fremove_text_properties, |
5fbe2a44 | 1414 | Sremove_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1415 | doc: /* Remove some properties from text from START to END. |
1416 | The third argument PROPERTIES is a property list | |
1417 | whose property names specify the properties to remove. | |
1418 | \(The values stored in PROPERTIES are ignored.) | |
81f6e55f FP |
1419 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1420 | the current buffer), START and END are buffer positions (integers or | |
1421 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
1422 | Return t if any property was actually removed, nil otherwise. | |
1423 | ||
518c0b83 | 1424 | Use `set-text-properties' if you want to remove all text properties. */) |
5842a27b | 1425 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
d418ef42 | 1426 | { |
ecc0fdd4 PE |
1427 | INTERVAL i, unchanged; |
1428 | ptrdiff_t s, len; | |
1429 | bool modified = 0; | |
d418ef42 | 1430 | |
5fbe2a44 | 1431 | if (NILP (object)) |
c8a4fc3d | 1432 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1433 | |
d418ef42 | 1434 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1435 | if (!i) |
d418ef42 JA |
1436 | return Qnil; |
1437 | ||
1438 | s = XINT (start); | |
1439 | len = XINT (end) - s; | |
9c79dd1b | 1440 | |
0248b0d7 EZ |
1441 | /* If there are no properties on this entire interval, return. */ |
1442 | if (! interval_has_some_properties (properties, i)) | |
d418ef42 | 1443 | { |
ecc0fdd4 PE |
1444 | ptrdiff_t got = LENGTH (i) - (s - i->position); |
1445 | ||
1446 | do | |
1447 | { | |
1448 | if (got >= len) | |
1449 | return Qnil; | |
1450 | len -= got; | |
1451 | i = next_interval (i); | |
1452 | got = LENGTH (i); | |
1453 | } | |
1454 | while (! interval_has_some_properties (properties, i)); | |
0248b0d7 EZ |
1455 | } |
1456 | /* Split away the beginning of this interval; what we don't | |
1457 | want to modify. */ | |
1458 | else if (i->position != s) | |
1459 | { | |
1460 | unchanged = i; | |
1461 | i = split_interval_right (unchanged, s - unchanged->position); | |
1462 | copy_properties (unchanged, i); | |
d418ef42 JA |
1463 | } |
1464 | ||
2a631db1 | 1465 | if (BUFFERP (object)) |
20edc1c9 | 1466 | modify_region (object, start, end); |
26c76ace | 1467 | |
d418ef42 | 1468 | /* We are at the beginning of an interval, with len to scan */ |
caa31568 | 1469 | for (;;) |
d418ef42 | 1470 | { |
cce7fefc | 1471 | eassert (i != 0); |
d4b530ad | 1472 | |
d418ef42 JA |
1473 | if (LENGTH (i) >= len) |
1474 | { | |
1f5e848a | 1475 | if (! interval_has_some_properties (properties, i)) |
0248b0d7 EZ |
1476 | { |
1477 | eassert (modified); | |
1478 | if (BUFFERP (object)) | |
1479 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1480 | XINT (end) - XINT (start)); | |
1481 | return Qt; | |
1482 | } | |
d418ef42 JA |
1483 | |
1484 | if (LENGTH (i) == len) | |
1485 | { | |
11713b6d RS |
1486 | remove_properties (properties, Qnil, i, object); |
1487 | if (BUFFERP (object)) | |
1488 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1489 | XINT (end) - XINT (start)); | |
1490 | return Qt; | |
1491 | } | |
1492 | ||
1493 | /* i has the properties, and goes past the change limit */ | |
1494 | unchanged = i; | |
1495 | i = split_interval_left (i, len); | |
1496 | copy_properties (unchanged, i); | |
1497 | remove_properties (properties, Qnil, i, object); | |
1498 | if (BUFFERP (object)) | |
1499 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1500 | XINT (end) - XINT (start)); | |
1501 | return Qt; | |
1502 | } | |
1503 | ||
1504 | len -= LENGTH (i); | |
ecc0fdd4 | 1505 | modified |= remove_properties (properties, Qnil, i, object); |
11713b6d RS |
1506 | i = next_interval (i); |
1507 | } | |
1508 | } | |
1509 | ||
a7ca3326 | 1510 | DEFUN ("remove-list-of-text-properties", Fremove_list_of_text_properties, |
11713b6d RS |
1511 | Sremove_list_of_text_properties, 3, 4, 0, |
1512 | doc: /* Remove some properties from text from START to END. | |
1513 | The third argument LIST-OF-PROPERTIES is a list of property names to remove. | |
81f6e55f FP |
1514 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1515 | the current buffer), START and END are buffer positions (integers or | |
1516 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
11713b6d | 1517 | Return t if any property was actually removed, nil otherwise. */) |
5842a27b | 1518 | (Lisp_Object start, Lisp_Object end, Lisp_Object list_of_properties, Lisp_Object object) |
11713b6d | 1519 | { |
ecc0fdd4 PE |
1520 | INTERVAL i, unchanged; |
1521 | ptrdiff_t s, len; | |
1522 | bool modified = 0; | |
11713b6d RS |
1523 | Lisp_Object properties; |
1524 | properties = list_of_properties; | |
1525 | ||
1526 | if (NILP (object)) | |
1527 | XSETBUFFER (object, current_buffer); | |
1528 | ||
1529 | i = validate_interval_range (object, &start, &end, soft); | |
77c7bcb1 | 1530 | if (!i) |
11713b6d RS |
1531 | return Qnil; |
1532 | ||
1533 | s = XINT (start); | |
1534 | len = XINT (end) - s; | |
1535 | ||
0248b0d7 EZ |
1536 | /* If there are no properties on the interval, return. */ |
1537 | if (! interval_has_some_properties_list (properties, i)) | |
11713b6d | 1538 | { |
ecc0fdd4 PE |
1539 | ptrdiff_t got = LENGTH (i) - (s - i->position); |
1540 | ||
1541 | do | |
1542 | { | |
1543 | if (got >= len) | |
1544 | return Qnil; | |
1545 | len -= got; | |
1546 | i = next_interval (i); | |
1547 | got = LENGTH (i); | |
1548 | } | |
1549 | while (! interval_has_some_properties_list (properties, i)); | |
0248b0d7 EZ |
1550 | } |
1551 | /* Split away the beginning of this interval; what we don't | |
1552 | want to modify. */ | |
1553 | else if (i->position != s) | |
1554 | { | |
1555 | unchanged = i; | |
1556 | i = split_interval_right (unchanged, s - unchanged->position); | |
1557 | copy_properties (unchanged, i); | |
11713b6d RS |
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 | { | |
cce7fefc | 1568 | eassert (i != 0); |
11713b6d RS |
1569 | |
1570 | if (LENGTH (i) >= len) | |
1571 | { | |
1572 | if (! interval_has_some_properties_list (properties, i)) | |
ef1b0ba7 SM |
1573 | { |
1574 | if (modified) | |
1575 | { | |
1576 | if (BUFFERP (object)) | |
1577 | signal_after_change (XINT (start), | |
1578 | XINT (end) - XINT (start), | |
1579 | XINT (end) - XINT (start)); | |
1580 | return Qt; | |
1581 | } | |
1582 | else | |
1583 | return Qnil; | |
1584 | } | |
1585 | else if (LENGTH (i) == len) | |
11713b6d | 1586 | { |
9b17c9f5 | 1587 | if (!modified && BUFFERP (object)) |
20edc1c9 | 1588 | modify_region (object, start, end); |
11713b6d | 1589 | remove_properties (Qnil, properties, i, object); |
2a631db1 RS |
1590 | if (BUFFERP (object)) |
1591 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1592 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1593 | return Qt; |
1594 | } | |
ef1b0ba7 SM |
1595 | else |
1596 | { /* i has the properties, and goes past the change limit. */ | |
1597 | unchanged = i; | |
1598 | i = split_interval_left (i, len); | |
1599 | copy_properties (unchanged, i); | |
1600 | if (!modified && BUFFERP (object)) | |
20edc1c9 | 1601 | modify_region (object, start, end); |
ef1b0ba7 SM |
1602 | remove_properties (Qnil, properties, i, object); |
1603 | if (BUFFERP (object)) | |
1604 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1605 | XINT (end) - XINT (start)); | |
1606 | return Qt; | |
1607 | } | |
d418ef42 | 1608 | } |
9b17c9f5 LH |
1609 | if (interval_has_some_properties_list (properties, i)) |
1610 | { | |
1611 | if (!modified && BUFFERP (object)) | |
20edc1c9 | 1612 | modify_region (object, start, end); |
9b17c9f5 LH |
1613 | remove_properties (Qnil, properties, i, object); |
1614 | modified = 1; | |
1615 | } | |
d418ef42 | 1616 | len -= LENGTH (i); |
d418ef42 JA |
1617 | i = next_interval (i); |
1618 | } | |
1619 | } | |
fcab51aa | 1620 | \f |
a7ca3326 | 1621 | DEFUN ("text-property-any", Ftext_property_any, |
ad9c1940 | 1622 | Stext_property_any, 4, 5, 0, |
fa463103 | 1623 | doc: /* Check text from START to END for property PROPERTY equaling VALUE. |
8c1a1077 PJ |
1624 | If so, return the position of the first character whose property PROPERTY |
1625 | is `eq' to VALUE. Otherwise return nil. | |
81f6e55f FP |
1626 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1627 | the current buffer), START and END are buffer positions (integers or | |
1628 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1629 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
ad9c1940 JB |
1630 | { |
1631 | register INTERVAL i; | |
d311d28c | 1632 | register ptrdiff_t e, pos; |
ad9c1940 JB |
1633 | |
1634 | if (NILP (object)) | |
c8a4fc3d | 1635 | XSETBUFFER (object, current_buffer); |
ad9c1940 | 1636 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1637 | if (!i) |
2084fddb | 1638 | return (!NILP (value) || EQ (start, end) ? Qnil : start); |
ad9c1940 JB |
1639 | e = XINT (end); |
1640 | ||
77c7bcb1 | 1641 | while (i) |
ad9c1940 JB |
1642 | { |
1643 | if (i->position >= e) | |
1644 | break; | |
1f5e848a | 1645 | if (EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1646 | { |
1647 | pos = i->position; | |
1648 | if (pos < XINT (start)) | |
1649 | pos = XINT (start); | |
ad077db0 | 1650 | return make_number (pos); |
ad9c1940 JB |
1651 | } |
1652 | i = next_interval (i); | |
1653 | } | |
1654 | return Qnil; | |
1655 | } | |
1656 | ||
1657 | DEFUN ("text-property-not-all", Ftext_property_not_all, | |
1658 | Stext_property_not_all, 4, 5, 0, | |
fa463103 | 1659 | doc: /* Check text from START to END for property PROPERTY not equaling VALUE. |
8c1a1077 PJ |
1660 | If so, return the position of the first character whose property PROPERTY |
1661 | is not `eq' to VALUE. Otherwise, return nil. | |
81f6e55f FP |
1662 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1663 | the current buffer), START and END are buffer positions (integers or | |
1664 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1665 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
ad9c1940 JB |
1666 | { |
1667 | register INTERVAL i; | |
d311d28c | 1668 | register ptrdiff_t s, e; |
ad9c1940 JB |
1669 | |
1670 | if (NILP (object)) | |
c8a4fc3d | 1671 | XSETBUFFER (object, current_buffer); |
ad9c1940 | 1672 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1673 | if (!i) |
916a3119 | 1674 | return (NILP (value) || EQ (start, end)) ? Qnil : start; |
ad9c1940 JB |
1675 | s = XINT (start); |
1676 | e = XINT (end); | |
1677 | ||
77c7bcb1 | 1678 | while (i) |
ad9c1940 JB |
1679 | { |
1680 | if (i->position >= e) | |
1681 | break; | |
1f5e848a | 1682 | if (! EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1683 | { |
1684 | if (i->position > s) | |
1685 | s = i->position; | |
ad077db0 | 1686 | return make_number (s); |
ad9c1940 JB |
1687 | } |
1688 | i = next_interval (i); | |
1689 | } | |
1690 | return Qnil; | |
1691 | } | |
e138dfdc MB |
1692 | |
1693 | \f | |
1694 | /* Return the direction from which the text-property PROP would be | |
1695 | inherited by any new text inserted at POS: 1 if it would be | |
1696 | inherited from the char after POS, -1 if it would be inherited from | |
6f716644 SM |
1697 | the char before POS, and 0 if from neither. |
1698 | BUFFER can be either a buffer or nil (meaning current buffer). */ | |
e138dfdc MB |
1699 | |
1700 | int | |
971de7fb | 1701 | text_property_stickiness (Lisp_Object prop, Lisp_Object pos, Lisp_Object buffer) |
e138dfdc MB |
1702 | { |
1703 | Lisp_Object prev_pos, front_sticky; | |
ecc0fdd4 | 1704 | bool is_rear_sticky = 1, is_front_sticky = 0; /* defaults */ |
cabf1cac | 1705 | Lisp_Object defalt = Fassq (prop, Vtext_property_default_nonsticky); |
e138dfdc | 1706 | |
6f716644 SM |
1707 | if (NILP (buffer)) |
1708 | XSETBUFFER (buffer, current_buffer); | |
1709 | ||
cabf1cac SM |
1710 | if (CONSP (defalt) && !NILP (XCDR (defalt))) |
1711 | is_rear_sticky = 0; | |
1712 | ||
6f716644 | 1713 | if (XINT (pos) > BUF_BEGV (XBUFFER (buffer))) |
e138dfdc MB |
1714 | /* Consider previous character. */ |
1715 | { | |
1716 | Lisp_Object rear_non_sticky; | |
1717 | ||
1718 | prev_pos = make_number (XINT (pos) - 1); | |
6f716644 | 1719 | rear_non_sticky = Fget_text_property (prev_pos, Qrear_nonsticky, buffer); |
e138dfdc MB |
1720 | |
1721 | if (!NILP (CONSP (rear_non_sticky) | |
1722 | ? Fmemq (prop, rear_non_sticky) | |
1723 | : rear_non_sticky)) | |
1724 | /* PROP is rear-non-sticky. */ | |
1725 | is_rear_sticky = 0; | |
1726 | } | |
506d2f9a CY |
1727 | else |
1728 | return 0; | |
e138dfdc MB |
1729 | |
1730 | /* Consider following character. */ | |
506d2f9a CY |
1731 | /* This signals an arg-out-of-range error if pos is outside the |
1732 | buffer's accessible range. */ | |
6f716644 | 1733 | front_sticky = Fget_text_property (pos, Qfront_sticky, buffer); |
e138dfdc MB |
1734 | |
1735 | if (EQ (front_sticky, Qt) | |
1736 | || (CONSP (front_sticky) | |
1737 | && !NILP (Fmemq (prop, front_sticky)))) | |
1738 | /* PROP is inherited from after. */ | |
1739 | is_front_sticky = 1; | |
1740 | ||
1741 | /* Simple cases, where the properties are consistent. */ | |
1742 | if (is_rear_sticky && !is_front_sticky) | |
1743 | return -1; | |
1744 | else if (!is_rear_sticky && is_front_sticky) | |
1745 | return 1; | |
1746 | else if (!is_rear_sticky && !is_front_sticky) | |
1747 | return 0; | |
1748 | ||
1749 | /* The stickiness properties are inconsistent, so we have to | |
1750 | disambiguate. Basically, rear-sticky wins, _except_ if the | |
1751 | property that would be inherited has a value of nil, in which case | |
1752 | front-sticky wins. */ | |
6f716644 SM |
1753 | if (XINT (pos) == BUF_BEGV (XBUFFER (buffer)) |
1754 | || NILP (Fget_text_property (prev_pos, prop, buffer))) | |
e138dfdc MB |
1755 | return 1; |
1756 | else | |
1757 | return -1; | |
1758 | } | |
1759 | ||
fcab51aa | 1760 | \f |
e2ad650c | 1761 | /* Copying properties between objects. */ |
15e4954b | 1762 | |
e2ad650c | 1763 | /* Add properties from START to END of SRC, starting at POS in DEST. |
c98da214 RS |
1764 | SRC and DEST may each refer to strings or buffers. |
1765 | Optional sixth argument PROP causes only that property to be copied. | |
1766 | Properties are copied to DEST as if by `add-text-properties'. | |
1767 | Return t if any property value actually changed, nil otherwise. */ | |
1768 | ||
1769 | /* Note this can GC when DEST is a buffer. */ | |
ad077db0 | 1770 | |
15e4954b | 1771 | Lisp_Object |
971de7fb | 1772 | copy_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object src, Lisp_Object pos, Lisp_Object dest, Lisp_Object prop) |
15e4954b JB |
1773 | { |
1774 | INTERVAL i; | |
1775 | Lisp_Object res; | |
1776 | Lisp_Object stuff; | |
1777 | Lisp_Object plist; | |
d311d28c | 1778 | ptrdiff_t s, e, e2, p, len; |
ecc0fdd4 | 1779 | bool modified = 0; |
c98da214 | 1780 | struct gcpro gcpro1, gcpro2; |
15e4954b JB |
1781 | |
1782 | i = validate_interval_range (src, &start, &end, soft); | |
77c7bcb1 | 1783 | if (!i) |
15e4954b JB |
1784 | return Qnil; |
1785 | ||
b7826503 | 1786 | CHECK_NUMBER_COERCE_MARKER (pos); |
15e4954b JB |
1787 | { |
1788 | Lisp_Object dest_start, dest_end; | |
1789 | ||
d311d28c PE |
1790 | e = XINT (pos) + (XINT (end) - XINT (start)); |
1791 | if (MOST_POSITIVE_FIXNUM < e) | |
1792 | args_out_of_range (pos, end); | |
15e4954b | 1793 | dest_start = pos; |
d311d28c | 1794 | XSETFASTINT (dest_end, e); |
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); | |
77c7bcb1 | 1835 | if (!i) |
15e4954b JB |
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)) | |
ecc0fdd4 | 1850 | modified = 1; |
15e4954b JB |
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 | 1875 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1876 | if (i) |
9dd7eec6 | 1877 | { |
d311d28c PE |
1878 | ptrdiff_t s = XINT (start); |
1879 | ptrdiff_t e = XINT (end); | |
81f6e55f | 1880 | |
9dd7eec6 GM |
1881 | while (s < e) |
1882 | { | |
d311d28c | 1883 | ptrdiff_t 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 | 1907 | i = next_interval (i); |
77c7bcb1 | 1908 | if (!i) |
9dd7eec6 GM |
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 | |
ecc0fdd4 | 1921 | and END positions by DELTA before adding properties. */ |
9dd7eec6 | 1922 | |
ecc0fdd4 | 1923 | void |
971de7fb | 1924 | add_text_properties_from_list (Lisp_Object object, Lisp_Object list, Lisp_Object delta) |
9dd7eec6 GM |
1925 | { |
1926 | struct gcpro gcpro1, gcpro2; | |
81f6e55f | 1927 | |
9dd7eec6 | 1928 | GCPRO2 (list, object); |
81f6e55f | 1929 | |
9dd7eec6 GM |
1930 | for (; CONSP (list); list = XCDR (list)) |
1931 | { | |
ecc0fdd4 | 1932 | Lisp_Object item, start, end, plist; |
81f6e55f | 1933 | |
9dd7eec6 GM |
1934 | item = XCAR (list); |
1935 | start = make_number (XINT (XCAR (item)) + XINT (delta)); | |
1936 | end = make_number (XINT (XCAR (XCDR (item))) + XINT (delta)); | |
1937 | plist = XCAR (XCDR (XCDR (item))); | |
81f6e55f | 1938 | |
ecc0fdd4 | 1939 | Fadd_text_properties (start, end, plist, object); |
9dd7eec6 GM |
1940 | } |
1941 | ||
1942 | UNGCPRO; | |
9dd7eec6 GM |
1943 | } |
1944 | ||
1945 | ||
1946 | ||
e398c61c CY |
1947 | /* Modify end-points of ranges in LIST destructively, and return the |
1948 | new list. LIST is a list as returned from text_property_list. | |
1949 | Discard properties that begin at or after NEW_END, and limit | |
1950 | end-points to NEW_END. */ | |
9dd7eec6 | 1951 | |
e398c61c | 1952 | Lisp_Object |
971de7fb | 1953 | extend_property_ranges (Lisp_Object list, Lisp_Object new_end) |
9dd7eec6 | 1954 | { |
e398c61c | 1955 | Lisp_Object prev = Qnil, head = list; |
d311d28c | 1956 | ptrdiff_t max = XINT (new_end); |
e398c61c CY |
1957 | |
1958 | for (; CONSP (list); prev = list, list = XCDR (list)) | |
9dd7eec6 | 1959 | { |
e398c61c | 1960 | Lisp_Object item, beg, end; |
81f6e55f | 1961 | |
9dd7eec6 | 1962 | item = XCAR (list); |
e398c61c | 1963 | beg = XCAR (item); |
9dd7eec6 GM |
1964 | end = XCAR (XCDR (item)); |
1965 | ||
e398c61c CY |
1966 | if (XINT (beg) >= max) |
1967 | { | |
1968 | /* The start-point is past the end of the new string. | |
1969 | Discard this property. */ | |
1970 | if (EQ (head, list)) | |
1971 | head = XCDR (list); | |
1972 | else | |
1973 | XSETCDR (prev, XCDR (list)); | |
1974 | } | |
1975 | else if (XINT (end) > max) | |
1976 | /* The end-point is past the end of the new string. */ | |
f3fbd155 | 1977 | XSETCAR (XCDR (item), new_end); |
9dd7eec6 | 1978 | } |
e398c61c CY |
1979 | |
1980 | return head; | |
9dd7eec6 GM |
1981 | } |
1982 | ||
1983 | ||
318d2fa8 RS |
1984 | \f |
1985 | /* Call the modification hook functions in LIST, each with START and END. */ | |
1986 | ||
1987 | static void | |
971de7fb | 1988 | call_mod_hooks (Lisp_Object list, Lisp_Object start, Lisp_Object end) |
318d2fa8 RS |
1989 | { |
1990 | struct gcpro gcpro1; | |
1991 | GCPRO1 (list); | |
1992 | while (!NILP (list)) | |
1993 | { | |
1994 | call2 (Fcar (list), start, end); | |
1995 | list = Fcdr (list); | |
1996 | } | |
1997 | UNGCPRO; | |
1998 | } | |
1999 | ||
96f90544 RS |
2000 | /* Check for read-only intervals between character positions START ... END, |
2001 | in BUF, and signal an error if we find one. | |
2002 | ||
2003 | Then check for any modification hooks in the range. | |
2004 | Create a list of all these hooks in lexicographic order, | |
2005 | eliminating consecutive extra copies of the same hook. Then call | |
2006 | those hooks in order, with START and END - 1 as arguments. */ | |
15e4954b | 2007 | |
318d2fa8 | 2008 | void |
d1dfb56c | 2009 | verify_interval_modification (struct buffer *buf, |
d311d28c | 2010 | ptrdiff_t start, ptrdiff_t end) |
318d2fa8 | 2011 | { |
0c94c8d6 PE |
2012 | INTERVAL intervals = buffer_intervals (buf); |
2013 | INTERVAL i; | |
318d2fa8 | 2014 | Lisp_Object hooks; |
0c94c8d6 | 2015 | Lisp_Object prev_mod_hooks; |
318d2fa8 RS |
2016 | Lisp_Object mod_hooks; |
2017 | struct gcpro gcpro1; | |
2018 | ||
2019 | hooks = Qnil; | |
2020 | prev_mod_hooks = Qnil; | |
2021 | mod_hooks = Qnil; | |
2022 | ||
2023 | interval_insert_behind_hooks = Qnil; | |
2024 | interval_insert_in_front_hooks = Qnil; | |
2025 | ||
77c7bcb1 | 2026 | if (!intervals) |
318d2fa8 RS |
2027 | return; |
2028 | ||
2029 | if (start > end) | |
2030 | { | |
d311d28c | 2031 | ptrdiff_t temp = start; |
318d2fa8 RS |
2032 | start = end; |
2033 | end = temp; | |
2034 | } | |
2035 | ||
2036 | /* For an insert operation, check the two chars around the position. */ | |
2037 | if (start == end) | |
2038 | { | |
7cb66899 | 2039 | INTERVAL prev = NULL; |
318d2fa8 RS |
2040 | Lisp_Object before, after; |
2041 | ||
2042 | /* Set I to the interval containing the char after START, | |
2043 | and PREV to the interval containing the char before START. | |
2044 | Either one may be null. They may be equal. */ | |
2045 | i = find_interval (intervals, start); | |
2046 | ||
2047 | if (start == BUF_BEGV (buf)) | |
2048 | prev = 0; | |
2049 | else if (i->position == start) | |
2050 | prev = previous_interval (i); | |
2051 | else if (i->position < start) | |
2052 | prev = i; | |
2053 | if (start == BUF_ZV (buf)) | |
2054 | i = 0; | |
2055 | ||
2056 | /* If Vinhibit_read_only is set and is not a list, we can | |
2057 | skip the read_only checks. */ | |
2058 | if (NILP (Vinhibit_read_only) || CONSP (Vinhibit_read_only)) | |
2059 | { | |
2060 | /* If I and PREV differ we need to check for the read-only | |
cdf3e5a2 | 2061 | property together with its stickiness. If either I or |
318d2fa8 RS |
2062 | PREV are 0, this check is all we need. |
2063 | We have to take special care, since read-only may be | |
2064 | indirectly defined via the category property. */ | |
2065 | if (i != prev) | |
2066 | { | |
77c7bcb1 | 2067 | if (i) |
318d2fa8 RS |
2068 | { |
2069 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2070 | |
318d2fa8 RS |
2071 | /* If interval I is read-only and read-only is |
2072 | front-sticky, inhibit insertion. | |
2073 | Check for read-only as well as category. */ | |
2074 | if (! NILP (after) | |
2075 | && NILP (Fmemq (after, Vinhibit_read_only))) | |
2076 | { | |
2077 | Lisp_Object tem; | |
2078 | ||
2079 | tem = textget (i->plist, Qfront_sticky); | |
2080 | if (TMEM (Qread_only, tem) | |
2081 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2082 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2083 | text_read_only (after); |
318d2fa8 RS |
2084 | } |
2085 | } | |
2086 | ||
77c7bcb1 | 2087 | if (prev) |
318d2fa8 RS |
2088 | { |
2089 | before = textget (prev->plist, Qread_only); | |
81f6e55f | 2090 | |
318d2fa8 RS |
2091 | /* If interval PREV is read-only and read-only isn't |
2092 | rear-nonsticky, inhibit insertion. | |
2093 | Check for read-only as well as category. */ | |
2094 | if (! NILP (before) | |
2095 | && NILP (Fmemq (before, Vinhibit_read_only))) | |
2096 | { | |
2097 | Lisp_Object tem; | |
2098 | ||
2099 | tem = textget (prev->plist, Qrear_nonsticky); | |
2100 | if (! TMEM (Qread_only, tem) | |
2101 | && (! NILP (Fplist_get (prev->plist,Qread_only)) | |
2102 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2103 | text_read_only (before); |
318d2fa8 RS |
2104 | } |
2105 | } | |
2106 | } | |
77c7bcb1 | 2107 | else if (i) |
318d2fa8 RS |
2108 | { |
2109 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2110 | |
318d2fa8 RS |
2111 | /* If interval I is read-only and read-only is |
2112 | front-sticky, inhibit insertion. | |
2113 | Check for read-only as well as category. */ | |
2114 | if (! NILP (after) && NILP (Fmemq (after, Vinhibit_read_only))) | |
2115 | { | |
2116 | Lisp_Object tem; | |
2117 | ||
2118 | tem = textget (i->plist, Qfront_sticky); | |
2119 | if (TMEM (Qread_only, tem) | |
2120 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2121 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2122 | text_read_only (after); |
318d2fa8 RS |
2123 | |
2124 | tem = textget (prev->plist, Qrear_nonsticky); | |
2125 | if (! TMEM (Qread_only, tem) | |
2126 | && (! NILP (Fplist_get (prev->plist, Qread_only)) | |
2127 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2128 | text_read_only (after); |
318d2fa8 RS |
2129 | } |
2130 | } | |
2131 | } | |
2132 | ||
2133 | /* Run both insert hooks (just once if they're the same). */ | |
77c7bcb1 | 2134 | if (prev) |
318d2fa8 RS |
2135 | interval_insert_behind_hooks |
2136 | = textget (prev->plist, Qinsert_behind_hooks); | |
77c7bcb1 | 2137 | if (i) |
318d2fa8 RS |
2138 | interval_insert_in_front_hooks |
2139 | = textget (i->plist, Qinsert_in_front_hooks); | |
2140 | } | |
0ba7995b | 2141 | else |
318d2fa8 RS |
2142 | { |
2143 | /* Loop over intervals on or next to START...END, | |
2144 | collecting their hooks. */ | |
2145 | ||
2146 | i = find_interval (intervals, start); | |
2147 | do | |
2148 | { | |
2149 | if (! INTERVAL_WRITABLE_P (i)) | |
bcf97349 | 2150 | text_read_only (textget (i->plist, Qread_only)); |
318d2fa8 | 2151 | |
0ba7995b | 2152 | if (!inhibit_modification_hooks) |
318d2fa8 | 2153 | { |
0ba7995b GM |
2154 | mod_hooks = textget (i->plist, Qmodification_hooks); |
2155 | if (! NILP (mod_hooks) && ! EQ (mod_hooks, prev_mod_hooks)) | |
2156 | { | |
2157 | hooks = Fcons (mod_hooks, hooks); | |
2158 | prev_mod_hooks = mod_hooks; | |
2159 | } | |
318d2fa8 RS |
2160 | } |
2161 | ||
2162 | i = next_interval (i); | |
2163 | } | |
2164 | /* Keep going thru the interval containing the char before END. */ | |
77c7bcb1 | 2165 | while (i && i->position < end); |
318d2fa8 | 2166 | |
0ba7995b | 2167 | if (!inhibit_modification_hooks) |
318d2fa8 | 2168 | { |
0ba7995b GM |
2169 | GCPRO1 (hooks); |
2170 | hooks = Fnreverse (hooks); | |
2171 | while (! EQ (hooks, Qnil)) | |
2172 | { | |
2173 | call_mod_hooks (Fcar (hooks), make_number (start), | |
2174 | make_number (end)); | |
2175 | hooks = Fcdr (hooks); | |
2176 | } | |
2177 | UNGCPRO; | |
318d2fa8 | 2178 | } |
318d2fa8 RS |
2179 | } |
2180 | } | |
2181 | ||
96f90544 | 2182 | /* Run the interval hooks for an insertion on character range START ... END. |
318d2fa8 RS |
2183 | verify_interval_modification chose which hooks to run; |
2184 | this function is called after the insertion happens | |
2185 | so it can indicate the range of inserted text. */ | |
2186 | ||
2187 | void | |
971de7fb | 2188 | report_interval_modification (Lisp_Object start, Lisp_Object end) |
318d2fa8 RS |
2189 | { |
2190 | if (! NILP (interval_insert_behind_hooks)) | |
2e34157c | 2191 | call_mod_hooks (interval_insert_behind_hooks, start, end); |
318d2fa8 RS |
2192 | if (! NILP (interval_insert_in_front_hooks) |
2193 | && ! EQ (interval_insert_in_front_hooks, | |
2194 | interval_insert_behind_hooks)) | |
2e34157c | 2195 | call_mod_hooks (interval_insert_in_front_hooks, start, end); |
318d2fa8 RS |
2196 | } |
2197 | \f | |
d418ef42 | 2198 | void |
971de7fb | 2199 | syms_of_textprop (void) |
d418ef42 | 2200 | { |
29208e82 | 2201 | DEFVAR_LISP ("default-text-properties", Vdefault_text_properties, |
8c1a1077 PJ |
2202 | doc: /* Property-list used as default values. |
2203 | The value of a property in this list is seen as the value for every | |
2204 | character that does not have its own value for that property. */); | |
ad1b2f20 | 2205 | Vdefault_text_properties = Qnil; |
c7dd82a3 | 2206 | |
29208e82 | 2207 | DEFVAR_LISP ("char-property-alias-alist", Vchar_property_alias_alist, |
49d110a8 CW |
2208 | doc: /* Alist of alternative properties for properties without a value. |
2209 | Each element should look like (PROPERTY ALTERNATIVE1 ALTERNATIVE2...). | |
2210 | If a piece of text has no direct value for a particular property, then | |
2211 | this alist is consulted. If that property appears in the alist, then | |
2212 | the first non-nil value from the associated alternative properties is | |
2213 | returned. */); | |
2214 | Vchar_property_alias_alist = Qnil; | |
2215 | ||
29208e82 | 2216 | DEFVAR_LISP ("inhibit-point-motion-hooks", Vinhibit_point_motion_hooks, |
8c1a1077 PJ |
2217 | doc: /* If non-nil, don't run `point-left' and `point-entered' text properties. |
2218 | This also inhibits the use of the `intangible' text property. */); | |
688a5a0f | 2219 | Vinhibit_point_motion_hooks = Qnil; |
318d2fa8 | 2220 | |
abc2f676 | 2221 | DEFVAR_LISP ("text-property-default-nonsticky", |
29208e82 | 2222 | Vtext_property_default_nonsticky, |
22bcf204 | 2223 | doc: /* Alist of properties vs the corresponding non-stickiness. |
8c1a1077 PJ |
2224 | Each element has the form (PROPERTY . NONSTICKINESS). |
2225 | ||
2226 | If a character in a buffer has PROPERTY, new text inserted adjacent to | |
2227 | the character doesn't inherit PROPERTY if NONSTICKINESS is non-nil, | |
518c0b83 JB |
2228 | inherits it if NONSTICKINESS is nil. The `front-sticky' and |
2229 | `rear-nonsticky' properties of the character override NONSTICKINESS. */); | |
cabf1cac SM |
2230 | /* Text properties `syntax-table'and `display' should be nonsticky |
2231 | by default. */ | |
98ebf860 | 2232 | Vtext_property_default_nonsticky |
cabf1cac SM |
2233 | = Fcons (Fcons (intern_c_string ("syntax-table"), Qt), |
2234 | Fcons (Fcons (intern_c_string ("display"), Qt), Qnil)); | |
abc2f676 | 2235 | |
318d2fa8 RS |
2236 | staticpro (&interval_insert_behind_hooks); |
2237 | staticpro (&interval_insert_in_front_hooks); | |
2238 | interval_insert_behind_hooks = Qnil; | |
2239 | interval_insert_in_front_hooks = Qnil; | |
2240 | ||
81f6e55f | 2241 | |
d418ef42 JA |
2242 | /* Common attributes one might give text */ |
2243 | ||
cd3520a4 JB |
2244 | DEFSYM (Qforeground, "foreground"); |
2245 | DEFSYM (Qbackground, "background"); | |
2246 | DEFSYM (Qfont, "font"); | |
2247 | DEFSYM (Qstipple, "stipple"); | |
2248 | DEFSYM (Qunderline, "underline"); | |
2249 | DEFSYM (Qread_only, "read-only"); | |
2250 | DEFSYM (Qinvisible, "invisible"); | |
2251 | DEFSYM (Qintangible, "intangible"); | |
2252 | DEFSYM (Qcategory, "category"); | |
2253 | DEFSYM (Qlocal_map, "local-map"); | |
2254 | DEFSYM (Qfront_sticky, "front-sticky"); | |
2255 | DEFSYM (Qrear_nonsticky, "rear-nonsticky"); | |
2256 | DEFSYM (Qmouse_face, "mouse-face"); | |
2257 | DEFSYM (Qminibuffer_prompt, "minibuffer-prompt"); | |
d418ef42 JA |
2258 | |
2259 | /* Properties that text might use to specify certain actions */ | |
2260 | ||
cd3520a4 JB |
2261 | DEFSYM (Qmouse_left, "mouse-left"); |
2262 | DEFSYM (Qmouse_entered, "mouse-entered"); | |
2263 | DEFSYM (Qpoint_left, "point-left"); | |
2264 | DEFSYM (Qpoint_entered, "point-entered"); | |
d418ef42 JA |
2265 | |
2266 | defsubr (&Stext_properties_at); | |
5fbe2a44 | 2267 | defsubr (&Sget_text_property); |
eb769fd7 | 2268 | defsubr (&Sget_char_property); |
97a1bc63 | 2269 | defsubr (&Sget_char_property_and_overlay); |
fcab51aa RS |
2270 | defsubr (&Snext_char_property_change); |
2271 | defsubr (&Sprevious_char_property_change); | |
b7e047fb MB |
2272 | defsubr (&Snext_single_char_property_change); |
2273 | defsubr (&Sprevious_single_char_property_change); | |
d418ef42 | 2274 | defsubr (&Snext_property_change); |
9c79dd1b | 2275 | defsubr (&Snext_single_property_change); |
d418ef42 | 2276 | defsubr (&Sprevious_property_change); |
9c79dd1b | 2277 | defsubr (&Sprevious_single_property_change); |
d418ef42 | 2278 | defsubr (&Sadd_text_properties); |
d4b530ad | 2279 | defsubr (&Sput_text_property); |
d418ef42 JA |
2280 | defsubr (&Sset_text_properties); |
2281 | defsubr (&Sremove_text_properties); | |
11713b6d | 2282 | defsubr (&Sremove_list_of_text_properties); |
ad9c1940 JB |
2283 | defsubr (&Stext_property_any); |
2284 | defsubr (&Stext_property_not_all); | |
d418ef42 | 2285 | } |