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 | 62 | |
cbae07d5 | 63 | /* Sticky properties. */ |
19e1c426 | 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 |
81c23309 PE |
128 | validate_interval_range (Lisp_Object object, Lisp_Object *begin, |
129 | Lisp_Object *end, bool force) | |
d418ef42 | 130 | { |
81c23309 | 131 | INTERVAL i; |
d311d28c | 132 | ptrdiff_t searchpos; |
d4b530ad | 133 | |
b7826503 PJ |
134 | CHECK_STRING_OR_BUFFER (object); |
135 | CHECK_NUMBER_COERCE_MARKER (*begin); | |
136 | CHECK_NUMBER_COERCE_MARKER (*end); | |
d418ef42 JA |
137 | |
138 | /* If we are asked for a point, but from a subr which operates | |
cdf3e5a2 | 139 | on a range, then return nothing. */ |
64a49ca7 | 140 | if (EQ (*begin, *end) && begin != end) |
77c7bcb1 | 141 | return NULL; |
d418ef42 JA |
142 | |
143 | if (XINT (*begin) > XINT (*end)) | |
144 | { | |
d4b530ad RS |
145 | Lisp_Object n; |
146 | n = *begin; | |
d418ef42 | 147 | *begin = *end; |
d4b530ad | 148 | *end = n; |
d418ef42 JA |
149 | } |
150 | ||
5d2fa46f | 151 | if (BUFFERP (object)) |
d418ef42 JA |
152 | { |
153 | register struct buffer *b = XBUFFER (object); | |
154 | ||
d418ef42 JA |
155 | if (!(BUF_BEGV (b) <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
156 | && XINT (*end) <= BUF_ZV (b))) | |
157 | args_out_of_range (*begin, *end); | |
0c94c8d6 | 158 | i = buffer_intervals (b); |
d418ef42 | 159 | |
cdf3e5a2 | 160 | /* If there's no text, there are no properties. */ |
d4b530ad | 161 | if (BUF_BEGV (b) == BUF_ZV (b)) |
77c7bcb1 | 162 | return NULL; |
d4b530ad RS |
163 | |
164 | searchpos = XINT (*begin); | |
d418ef42 JA |
165 | } |
166 | else | |
167 | { | |
d311d28c | 168 | ptrdiff_t len = SCHARS (object); |
d418ef42 | 169 | |
d4b530ad | 170 | if (! (0 <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
943afcc7 | 171 | && XINT (*end) <= len)) |
d418ef42 | 172 | args_out_of_range (*begin, *end); |
ad077db0 | 173 | XSETFASTINT (*begin, XFASTINT (*begin)); |
b1e94638 | 174 | if (begin != end) |
ad077db0 | 175 | XSETFASTINT (*end, XFASTINT (*end)); |
0c94c8d6 | 176 | i = string_intervals (object); |
d4b530ad | 177 | |
943afcc7 | 178 | if (len == 0) |
77c7bcb1 | 179 | return NULL; |
d4b530ad RS |
180 | |
181 | searchpos = XINT (*begin); | |
d418ef42 JA |
182 | } |
183 | ||
77c7bcb1 | 184 | if (!i) |
d418ef42 | 185 | return (force ? create_root_interval (object) : i); |
81f6e55f | 186 | |
d4b530ad | 187 | return find_interval (i, searchpos); |
d418ef42 JA |
188 | } |
189 | ||
190 | /* Validate LIST as a property list. If LIST is not a list, then | |
191 | make one consisting of (LIST nil). Otherwise, verify that LIST | |
cdf3e5a2 | 192 | is even numbered and thus suitable as a plist. */ |
d418ef42 JA |
193 | |
194 | static Lisp_Object | |
971de7fb | 195 | validate_plist (Lisp_Object list) |
d418ef42 JA |
196 | { |
197 | if (NILP (list)) | |
198 | return Qnil; | |
199 | ||
200 | if (CONSP (list)) | |
201 | { | |
ecc0fdd4 PE |
202 | bool odd_length = 0; |
203 | Lisp_Object tail; | |
204 | for (tail = list; CONSP (tail); tail = XCDR (tail)) | |
b1e94638 | 205 | { |
ecc0fdd4 | 206 | odd_length ^= 1; |
b1e94638 JB |
207 | QUIT; |
208 | } | |
ecc0fdd4 | 209 | if (odd_length) |
d418ef42 JA |
210 | error ("Odd length text property list"); |
211 | return list; | |
212 | } | |
213 | ||
214 | return Fcons (list, Fcons (Qnil, Qnil)); | |
215 | } | |
216 | ||
ecc0fdd4 | 217 | /* Return true if interval I has all the properties, |
cdf3e5a2 | 218 | with the same values, of list PLIST. */ |
d418ef42 | 219 | |
ecc0fdd4 | 220 | static bool |
971de7fb | 221 | interval_has_all_properties (Lisp_Object plist, INTERVAL i) |
d418ef42 | 222 | { |
ecc0fdd4 | 223 | Lisp_Object tail1, tail2; |
d418ef42 | 224 | |
cdf3e5a2 | 225 | /* Go through each element of PLIST. */ |
99784d63 | 226 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 227 | { |
ecc0fdd4 PE |
228 | Lisp_Object sym1 = XCAR (tail1); |
229 | bool found = 0; | |
d418ef42 JA |
230 | |
231 | /* Go through I's plist, looking for sym1 */ | |
99784d63 SM |
232 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
233 | if (EQ (sym1, XCAR (tail2))) | |
d418ef42 JA |
234 | { |
235 | /* Found the same property on both lists. If the | |
cdf3e5a2 | 236 | values are unequal, return zero. */ |
99784d63 | 237 | if (! EQ (Fcar (XCDR (tail1)), Fcar (XCDR (tail2)))) |
d418ef42 JA |
238 | return 0; |
239 | ||
224a3131 | 240 | /* Property has same value on both lists; go to next one. */ |
d418ef42 JA |
241 | found = 1; |
242 | break; | |
243 | } | |
244 | ||
245 | if (! found) | |
246 | return 0; | |
247 | } | |
248 | ||
249 | return 1; | |
250 | } | |
251 | ||
ecc0fdd4 | 252 | /* Return true if the plist of interval I has any of the |
cdf3e5a2 | 253 | properties of PLIST, regardless of their values. */ |
d418ef42 | 254 | |
ecc0fdd4 | 255 | static bool |
971de7fb | 256 | interval_has_some_properties (Lisp_Object plist, INTERVAL i) |
d418ef42 | 257 | { |
ecc0fdd4 | 258 | Lisp_Object tail1, tail2, sym; |
d418ef42 | 259 | |
cdf3e5a2 | 260 | /* Go through each element of PLIST. */ |
99784d63 | 261 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 262 | { |
99784d63 | 263 | sym = XCAR (tail1); |
d418ef42 JA |
264 | |
265 | /* Go through i's plist, looking for tail1 */ | |
99784d63 SM |
266 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
267 | if (EQ (sym, XCAR (tail2))) | |
d418ef42 JA |
268 | return 1; |
269 | } | |
270 | ||
271 | return 0; | |
272 | } | |
11713b6d RS |
273 | |
274 | /* Return nonzero if the plist of interval I has any of the | |
275 | property names in LIST, regardless of their values. */ | |
276 | ||
ecc0fdd4 | 277 | static bool |
971de7fb | 278 | interval_has_some_properties_list (Lisp_Object list, INTERVAL i) |
11713b6d | 279 | { |
ecc0fdd4 | 280 | Lisp_Object tail1, tail2, sym; |
11713b6d RS |
281 | |
282 | /* Go through each element of LIST. */ | |
99784d63 | 283 | for (tail1 = list; CONSP (tail1); tail1 = XCDR (tail1)) |
11713b6d | 284 | { |
7d7bbefd | 285 | sym = XCAR (tail1); |
11713b6d RS |
286 | |
287 | /* Go through i's plist, looking for tail1 */ | |
99784d63 | 288 | for (tail2 = i->plist; CONSP (tail2); tail2 = XCDR (XCDR (tail2))) |
11713b6d RS |
289 | if (EQ (sym, XCAR (tail2))) |
290 | return 1; | |
291 | } | |
292 | ||
293 | return 0; | |
294 | } | |
d4b530ad | 295 | \f |
d7b4e137 JB |
296 | /* Changing the plists of individual intervals. */ |
297 | ||
298 | /* Return the value of PROP in property-list PLIST, or Qunbound if it | |
299 | has none. */ | |
64a49ca7 | 300 | static Lisp_Object |
971de7fb | 301 | property_value (Lisp_Object plist, Lisp_Object prop) |
d7b4e137 JB |
302 | { |
303 | Lisp_Object value; | |
304 | ||
305 | while (PLIST_ELT_P (plist, value)) | |
70949dac KR |
306 | if (EQ (XCAR (plist), prop)) |
307 | return XCAR (value); | |
d7b4e137 | 308 | else |
70949dac | 309 | plist = XCDR (value); |
d7b4e137 JB |
310 | |
311 | return Qunbound; | |
312 | } | |
313 | ||
d4b530ad RS |
314 | /* Set the properties of INTERVAL to PROPERTIES, |
315 | and record undo info for the previous values. | |
316 | OBJECT is the string or buffer that INTERVAL belongs to. */ | |
317 | ||
318 | static void | |
971de7fb | 319 | set_properties (Lisp_Object properties, INTERVAL interval, Lisp_Object object) |
d4b530ad | 320 | { |
d7b4e137 | 321 | Lisp_Object sym, value; |
d4b530ad | 322 | |
d7b4e137 | 323 | if (BUFFERP (object)) |
d4b530ad | 324 | { |
d7b4e137 JB |
325 | /* For each property in the old plist which is missing from PROPERTIES, |
326 | or has a different value in PROPERTIES, make an undo record. */ | |
327 | for (sym = interval->plist; | |
328 | PLIST_ELT_P (sym, value); | |
70949dac KR |
329 | sym = XCDR (value)) |
330 | if (! EQ (property_value (properties, XCAR (sym)), | |
331 | XCAR (value))) | |
f7a9275a | 332 | { |
f7a9275a | 333 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 334 | XCAR (sym), XCAR (value), |
f7a9275a RS |
335 | object); |
336 | } | |
d7b4e137 JB |
337 | |
338 | /* For each new property that has no value at all in the old plist, | |
339 | make an undo record binding it to nil, so it will be removed. */ | |
340 | for (sym = properties; | |
341 | PLIST_ELT_P (sym, value); | |
70949dac KR |
342 | sym = XCDR (value)) |
343 | if (EQ (property_value (interval->plist, XCAR (sym)), Qunbound)) | |
f7a9275a | 344 | { |
f7a9275a | 345 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 346 | XCAR (sym), Qnil, |
f7a9275a RS |
347 | object); |
348 | } | |
d4b530ad RS |
349 | } |
350 | ||
351 | /* Store new properties. */ | |
0c94c8d6 | 352 | set_interval_plist (interval, Fcopy_sequence (properties)); |
d4b530ad | 353 | } |
d418ef42 JA |
354 | |
355 | /* Add the properties of PLIST to the interval I, or set | |
356 | the value of I's property to the value of the property on PLIST | |
357 | if they are different. | |
358 | ||
d4b530ad RS |
359 | OBJECT should be the string or buffer the interval is in. |
360 | ||
ecc0fdd4 | 361 | Return true if this changes I (i.e., if any members of PLIST |
d418ef42 JA |
362 | are actually added to I's plist) */ |
363 | ||
ecc0fdd4 | 364 | static bool |
971de7fb | 365 | add_properties (Lisp_Object plist, INTERVAL i, Lisp_Object object) |
d418ef42 | 366 | { |
c98da214 | 367 | Lisp_Object tail1, tail2, sym1, val1; |
ecc0fdd4 | 368 | bool changed = 0; |
c98da214 RS |
369 | struct gcpro gcpro1, gcpro2, gcpro3; |
370 | ||
371 | tail1 = plist; | |
372 | sym1 = Qnil; | |
373 | val1 = Qnil; | |
374 | /* No need to protect OBJECT, because we can GC only in the case | |
375 | where it is a buffer, and live buffers are always protected. | |
376 | I and its plist are also protected, via OBJECT. */ | |
377 | GCPRO3 (tail1, sym1, val1); | |
d418ef42 | 378 | |
cdf3e5a2 | 379 | /* Go through each element of PLIST. */ |
99784d63 | 380 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 381 | { |
ecc0fdd4 | 382 | bool found = 0; |
99784d63 SM |
383 | sym1 = XCAR (tail1); |
384 | val1 = Fcar (XCDR (tail1)); | |
d418ef42 JA |
385 | |
386 | /* Go through I's plist, looking for sym1 */ | |
99784d63 SM |
387 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
388 | if (EQ (sym1, XCAR (tail2))) | |
d418ef42 | 389 | { |
c98da214 RS |
390 | /* No need to gcpro, because tail2 protects this |
391 | and it must be a cons cell (we get an error otherwise). */ | |
3814ccf5 | 392 | register Lisp_Object this_cdr; |
d418ef42 | 393 | |
99784d63 | 394 | this_cdr = XCDR (tail2); |
cdf3e5a2 | 395 | /* Found the property. Now check its value. */ |
d418ef42 JA |
396 | found = 1; |
397 | ||
398 | /* The properties have the same value on both lists. | |
cdf3e5a2 | 399 | Continue to the next property. */ |
734c51b2 | 400 | if (EQ (val1, Fcar (this_cdr))) |
d418ef42 JA |
401 | break; |
402 | ||
d4b530ad | 403 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 404 | if (BUFFERP (object)) |
d4b530ad | 405 | { |
f7a9275a RS |
406 | record_property_change (i->position, LENGTH (i), |
407 | sym1, Fcar (this_cdr), object); | |
d4b530ad RS |
408 | } |
409 | ||
d418ef42 JA |
410 | /* I's property has a different value -- change it */ |
411 | Fsetcar (this_cdr, val1); | |
ecc0fdd4 | 412 | changed = 1; |
d418ef42 JA |
413 | break; |
414 | } | |
415 | ||
416 | if (! found) | |
417 | { | |
d4b530ad | 418 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 419 | if (BUFFERP (object)) |
d4b530ad | 420 | { |
f7a9275a RS |
421 | record_property_change (i->position, LENGTH (i), |
422 | sym1, Qnil, object); | |
d4b530ad | 423 | } |
0c94c8d6 | 424 | set_interval_plist (i, Fcons (sym1, Fcons (val1, i->plist))); |
ecc0fdd4 | 425 | changed = 1; |
d418ef42 JA |
426 | } |
427 | } | |
428 | ||
c98da214 RS |
429 | UNGCPRO; |
430 | ||
d418ef42 JA |
431 | return changed; |
432 | } | |
433 | ||
11713b6d RS |
434 | /* For any members of PLIST, or LIST, |
435 | which are properties of I, remove them from I's plist. | |
436 | (If PLIST is non-nil, use that, otherwise use LIST.) | |
d4b530ad | 437 | OBJECT is the string or buffer containing I. */ |
d418ef42 | 438 | |
ecc0fdd4 | 439 | static bool |
971de7fb | 440 | remove_properties (Lisp_Object plist, Lisp_Object list, INTERVAL i, Lisp_Object object) |
d418ef42 | 441 | { |
ecc0fdd4 PE |
442 | Lisp_Object tail1, tail2, sym, current_plist; |
443 | bool changed = 0; | |
d418ef42 | 444 | |
ecc0fdd4 PE |
445 | /* True means tail1 is a plist, otherwise it is a list. */ |
446 | bool use_plist; | |
11713b6d | 447 | |
3814ccf5 | 448 | current_plist = i->plist; |
11713b6d RS |
449 | |
450 | if (! NILP (plist)) | |
f25d60d6 | 451 | tail1 = plist, use_plist = 1; |
11713b6d | 452 | else |
f25d60d6 | 453 | tail1 = list, use_plist = 0; |
11713b6d RS |
454 | |
455 | /* Go through each element of LIST or PLIST. */ | |
b079118d | 456 | while (CONSP (tail1)) |
d418ef42 | 457 | { |
11713b6d | 458 | sym = XCAR (tail1); |
d418ef42 | 459 | |
11713b6d | 460 | /* First, remove the symbol if it's at the head of the list */ |
b079118d | 461 | while (CONSP (current_plist) && EQ (sym, XCAR (current_plist))) |
d418ef42 | 462 | { |
5d2fa46f | 463 | if (BUFFERP (object)) |
11713b6d RS |
464 | record_property_change (i->position, LENGTH (i), |
465 | sym, XCAR (XCDR (current_plist)), | |
466 | object); | |
d4b530ad | 467 | |
11713b6d | 468 | current_plist = XCDR (XCDR (current_plist)); |
ecc0fdd4 | 469 | changed = 1; |
d418ef42 JA |
470 | } |
471 | ||
11713b6d | 472 | /* Go through I's plist, looking for SYM. */ |
d418ef42 JA |
473 | tail2 = current_plist; |
474 | while (! NILP (tail2)) | |
475 | { | |
3814ccf5 | 476 | register Lisp_Object this; |
11713b6d | 477 | this = XCDR (XCDR (tail2)); |
b079118d | 478 | if (CONSP (this) && EQ (sym, XCAR (this))) |
d418ef42 | 479 | { |
5d2fa46f | 480 | if (BUFFERP (object)) |
11713b6d RS |
481 | record_property_change (i->position, LENGTH (i), |
482 | sym, XCAR (XCDR (this)), object); | |
d4b530ad | 483 | |
11713b6d | 484 | Fsetcdr (XCDR (tail2), XCDR (XCDR (this))); |
ecc0fdd4 | 485 | changed = 1; |
d418ef42 JA |
486 | } |
487 | tail2 = this; | |
488 | } | |
11713b6d RS |
489 | |
490 | /* Advance thru TAIL1 one way or the other. */ | |
f25d60d6 KS |
491 | tail1 = XCDR (tail1); |
492 | if (use_plist && CONSP (tail1)) | |
11713b6d | 493 | tail1 = XCDR (tail1); |
d418ef42 JA |
494 | } |
495 | ||
496 | if (changed) | |
0c94c8d6 | 497 | set_interval_plist (i, current_plist); |
d418ef42 JA |
498 | return changed; |
499 | } | |
d418ef42 | 500 | \f |
81f6e55f | 501 | /* Returns the interval of POSITION in OBJECT. |
cdf3e5a2 RS |
502 | POSITION is BEG-based. */ |
503 | ||
504 | INTERVAL | |
d311d28c | 505 | interval_of (ptrdiff_t position, Lisp_Object object) |
cdf3e5a2 RS |
506 | { |
507 | register INTERVAL i; | |
d311d28c | 508 | ptrdiff_t beg, end; |
cdf3e5a2 RS |
509 | |
510 | if (NILP (object)) | |
511 | XSETBUFFER (object, current_buffer); | |
d0cb872a | 512 | else if (EQ (object, Qt)) |
77c7bcb1 | 513 | return NULL; |
cdf3e5a2 | 514 | |
b7826503 | 515 | CHECK_STRING_OR_BUFFER (object); |
cdf3e5a2 RS |
516 | |
517 | if (BUFFERP (object)) | |
518 | { | |
519 | register struct buffer *b = XBUFFER (object); | |
520 | ||
521 | beg = BUF_BEGV (b); | |
522 | end = BUF_ZV (b); | |
0c94c8d6 | 523 | i = buffer_intervals (b); |
cdf3e5a2 RS |
524 | } |
525 | else | |
526 | { | |
ad077db0 | 527 | beg = 0; |
943afcc7 | 528 | end = SCHARS (object); |
0c94c8d6 | 529 | i = string_intervals (object); |
cdf3e5a2 RS |
530 | } |
531 | ||
532 | if (!(beg <= position && position <= end)) | |
c7ef8e24 | 533 | args_out_of_range (make_number (position), make_number (position)); |
77c7bcb1 DA |
534 | if (beg == end || !i) |
535 | return NULL; | |
81f6e55f | 536 | |
cdf3e5a2 RS |
537 | return find_interval (i, position); |
538 | } | |
539 | \f | |
a7ca3326 | 540 | DEFUN ("text-properties-at", Ftext_properties_at, |
d418ef42 | 541 | Stext_properties_at, 1, 2, 0, |
8c1a1077 | 542 | doc: /* Return the list of properties of the character at POSITION in OBJECT. |
81f6e55f FP |
543 | If the optional second argument OBJECT is a buffer (or nil, which means |
544 | the current buffer), POSITION is a buffer position (integer or marker). | |
545 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 | 546 | If POSITION is at the end of OBJECT, the value is nil. */) |
5842a27b | 547 | (Lisp_Object position, Lisp_Object object) |
d418ef42 JA |
548 | { |
549 | register INTERVAL i; | |
d418ef42 JA |
550 | |
551 | if (NILP (object)) | |
c8a4fc3d | 552 | XSETBUFFER (object, current_buffer); |
d418ef42 | 553 | |
1f5e848a | 554 | i = validate_interval_range (object, &position, &position, soft); |
77c7bcb1 | 555 | if (!i) |
d418ef42 | 556 | return Qnil; |
1f5e848a | 557 | /* If POSITION is at the end of the interval, |
d4b530ad RS |
558 | it means it's the end of OBJECT. |
559 | There are no properties at the very end, | |
560 | since no character follows. */ | |
1f5e848a | 561 | if (XINT (position) == LENGTH (i) + i->position) |
d4b530ad | 562 | return Qnil; |
d418ef42 JA |
563 | |
564 | return i->plist; | |
565 | } | |
566 | ||
a7ca3326 | 567 | DEFUN ("get-text-property", Fget_text_property, Sget_text_property, 2, 3, 0, |
8c1a1077 | 568 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
b4f5313e CY |
569 | OBJECT should be a buffer or a string; if omitted or nil, it defaults |
570 | to the current buffer. | |
8c1a1077 | 571 | If POSITION is at the end of OBJECT, the value is nil. */) |
5842a27b | 572 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
5fbe2a44 | 573 | { |
1f5e848a | 574 | return textget (Ftext_properties_at (position, object), prop); |
5fbe2a44 RS |
575 | } |
576 | ||
bcf97349 | 577 | /* Return the value of char's property PROP, in OBJECT at POSITION. |
8d41abc4 MB |
578 | OBJECT is optional and defaults to the current buffer. |
579 | If OVERLAY is non-0, then in the case that the returned property is from | |
580 | an overlay, the overlay found is returned in *OVERLAY, otherwise nil is | |
581 | returned in *OVERLAY. | |
582 | If POSITION is at the end of OBJECT, the value is nil. | |
583 | If OBJECT is a buffer, then overlay properties are considered as well as | |
584 | text properties. | |
585 | If OBJECT is a window, then that window's buffer is used, but | |
586 | window-specific overlays are considered only if they are associated | |
587 | with OBJECT. */ | |
588 | Lisp_Object | |
971de7fb | 589 | get_char_property_and_overlay (Lisp_Object position, register Lisp_Object prop, Lisp_Object object, Lisp_Object *overlay) |
f5957179 KH |
590 | { |
591 | struct window *w = 0; | |
592 | ||
b7826503 | 593 | CHECK_NUMBER_COERCE_MARKER (position); |
f5957179 KH |
594 | |
595 | if (NILP (object)) | |
c8a4fc3d | 596 | XSETBUFFER (object, current_buffer); |
f5957179 KH |
597 | |
598 | if (WINDOWP (object)) | |
599 | { | |
e74aeda8 | 600 | CHECK_LIVE_WINDOW (object); |
f5957179 | 601 | w = XWINDOW (object); |
e74aeda8 | 602 | object = w->contents; |
f5957179 KH |
603 | } |
604 | if (BUFFERP (object)) | |
605 | { | |
b081724f | 606 | ptrdiff_t noverlays; |
b5be4dbe | 607 | Lisp_Object *overlay_vec; |
cbc55f55 RS |
608 | struct buffer *obuf = current_buffer; |
609 | ||
dd6f2802 RS |
610 | if (XINT (position) < BUF_BEGV (XBUFFER (object)) |
611 | || XINT (position) > BUF_ZV (XBUFFER (object))) | |
612 | xsignal1 (Qargs_out_of_range, position); | |
613 | ||
cbc55f55 | 614 | set_buffer_temp (XBUFFER (object)); |
f5957179 | 615 | |
b5be4dbe | 616 | GET_OVERLAYS_AT (XINT (position), overlay_vec, noverlays, NULL, 0); |
f5957179 KH |
617 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
618 | ||
cbc55f55 RS |
619 | set_buffer_temp (obuf); |
620 | ||
f5957179 KH |
621 | /* Now check the overlays in order of decreasing priority. */ |
622 | while (--noverlays >= 0) | |
623 | { | |
b5be4dbe | 624 | Lisp_Object tem = Foverlay_get (overlay_vec[noverlays], prop); |
f5957179 | 625 | if (!NILP (tem)) |
8d41abc4 MB |
626 | { |
627 | if (overlay) | |
628 | /* Return the overlay we got the property from. */ | |
629 | *overlay = overlay_vec[noverlays]; | |
630 | return tem; | |
631 | } | |
f5957179 KH |
632 | } |
633 | } | |
8d41abc4 MB |
634 | |
635 | if (overlay) | |
636 | /* Indicate that the return value is not from an overlay. */ | |
637 | *overlay = Qnil; | |
638 | ||
f5957179 KH |
639 | /* Not a buffer, or no appropriate overlay, so fall through to the |
640 | simpler case. */ | |
8d41abc4 MB |
641 | return Fget_text_property (position, prop, object); |
642 | } | |
643 | ||
a7ca3326 | 644 | DEFUN ("get-char-property", Fget_char_property, Sget_char_property, 2, 3, 0, |
8c1a1077 | 645 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
8faef085 | 646 | Both overlay properties and text properties are checked. |
8c1a1077 PJ |
647 | OBJECT is optional and defaults to the current buffer. |
648 | If POSITION is at the end of OBJECT, the value is nil. | |
649 | If OBJECT is a buffer, then overlay properties are considered as well as | |
650 | text properties. | |
651 | If OBJECT is a window, then that window's buffer is used, but window-specific | |
652 | overlays are considered only if they are associated with OBJECT. */) | |
5842a27b | 653 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
8d41abc4 MB |
654 | { |
655 | return get_char_property_and_overlay (position, prop, object, 0); | |
f5957179 | 656 | } |
97a1bc63 LT |
657 | |
658 | DEFUN ("get-char-property-and-overlay", Fget_char_property_and_overlay, | |
659 | Sget_char_property_and_overlay, 2, 3, 0, | |
660 | doc: /* Like `get-char-property', but with extra overlay information. | |
95555145 RS |
661 | The value is a cons cell. Its car is the return value of `get-char-property' |
662 | with the same arguments--that is, the value of POSITION's property | |
663 | PROP in OBJECT. Its cdr is the overlay in which the property was | |
97a1bc63 | 664 | found, or nil, if it was found as a text property or not found at all. |
95555145 | 665 | |
97a1bc63 LT |
666 | OBJECT is optional and defaults to the current buffer. OBJECT may be |
667 | a string, a buffer or a window. For strings, the cdr of the return | |
668 | value is always nil, since strings do not have overlays. If OBJECT is | |
669 | a window, then that window's buffer is used, but window-specific | |
670 | overlays are considered only if they are associated with OBJECT. If | |
671 | POSITION is at the end of OBJECT, both car and cdr are nil. */) | |
5842a27b | 672 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
97a1bc63 LT |
673 | { |
674 | Lisp_Object overlay; | |
675 | Lisp_Object val | |
676 | = get_char_property_and_overlay (position, prop, object, &overlay); | |
6519d955 | 677 | return Fcons (val, overlay); |
97a1bc63 LT |
678 | } |
679 | ||
fcab51aa | 680 | \f |
a7ca3326 | 681 | DEFUN ("next-char-property-change", Fnext_char_property_change, |
fcab51aa | 682 | Snext_char_property_change, 1, 2, 0, |
8c1a1077 | 683 | doc: /* Return the position of next text property or overlay change. |
81f6e55f FP |
684 | This scans characters forward in the current buffer from POSITION till |
685 | it finds a change in some text property, or the beginning or end of an | |
686 | overlay, and returns the position of that. | |
85cc6738 | 687 | If none is found up to (point-max), the function returns (point-max). |
8c1a1077 | 688 | |
a41292c2 | 689 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
690 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
691 | LIMIT is a no-op if it is greater than (point-max). */) | |
5842a27b | 692 | (Lisp_Object position, Lisp_Object limit) |
fcab51aa RS |
693 | { |
694 | Lisp_Object temp; | |
695 | ||
696 | temp = Fnext_overlay_change (position); | |
697 | if (! NILP (limit)) | |
698 | { | |
d615870a | 699 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
700 | if (XINT (limit) < XINT (temp)) |
701 | temp = limit; | |
702 | } | |
703 | return Fnext_property_change (position, Qnil, temp); | |
704 | } | |
705 | ||
a7ca3326 | 706 | DEFUN ("previous-char-property-change", Fprevious_char_property_change, |
fcab51aa | 707 | Sprevious_char_property_change, 1, 2, 0, |
8c1a1077 | 708 | doc: /* Return the position of previous text property or overlay change. |
81f6e55f FP |
709 | Scans characters backward in the current buffer from POSITION till it |
710 | finds a change in some text property, or the beginning or end of an | |
711 | overlay, and returns the position of that. | |
85cc6738 | 712 | If none is found since (point-min), the function returns (point-min). |
8c1a1077 | 713 | |
a41292c2 | 714 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
715 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
716 | LIMIT is a no-op if it is less than (point-min). */) | |
5842a27b | 717 | (Lisp_Object position, Lisp_Object limit) |
fcab51aa RS |
718 | { |
719 | Lisp_Object temp; | |
f5957179 | 720 | |
fcab51aa RS |
721 | temp = Fprevious_overlay_change (position); |
722 | if (! NILP (limit)) | |
723 | { | |
d615870a | 724 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
725 | if (XINT (limit) > XINT (temp)) |
726 | temp = limit; | |
727 | } | |
728 | return Fprevious_property_change (position, Qnil, temp); | |
729 | } | |
0b0737d1 GM |
730 | |
731 | ||
a7ca3326 | 732 | DEFUN ("next-single-char-property-change", Fnext_single_char_property_change, |
b7e047fb | 733 | Snext_single_char_property_change, 2, 4, 0, |
8c1a1077 PJ |
734 | doc: /* Return the position of next text property or overlay change for a specific property. |
735 | Scans characters forward from POSITION till it finds | |
736 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
737 | If the optional third argument OBJECT is a buffer (or nil, which means |
738 | the current buffer), POSITION is a buffer position (integer or marker). | |
739 | If OBJECT is a string, POSITION is a 0-based index into it. | |
740 | ||
85cc6738 RS |
741 | In a string, scan runs to the end of the string. |
742 | In a buffer, it runs to (point-max), and the value cannot exceed that. | |
743 | ||
8c1a1077 PJ |
744 | The property values are compared with `eq'. |
745 | If the property is constant all the way to the end of OBJECT, return the | |
746 | last valid position in OBJECT. | |
747 | If the optional fourth argument LIMIT is non-nil, don't search | |
748 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 749 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
0b0737d1 GM |
750 | { |
751 | if (STRINGP (object)) | |
752 | { | |
b7e047fb MB |
753 | position = Fnext_single_property_change (position, prop, object, limit); |
754 | if (NILP (position)) | |
0b0737d1 GM |
755 | { |
756 | if (NILP (limit)) | |
d5db4077 | 757 | position = make_number (SCHARS (object)); |
0b0737d1 | 758 | else |
d615870a DK |
759 | { |
760 | CHECK_NUMBER (limit); | |
761 | position = limit; | |
762 | } | |
0b0737d1 GM |
763 | } |
764 | } | |
765 | else | |
766 | { | |
767 | Lisp_Object initial_value, value; | |
d311d28c | 768 | ptrdiff_t count = SPECPDL_INDEX (); |
0b0737d1 | 769 | |
b7e047fb | 770 | if (! NILP (object)) |
b7826503 | 771 | CHECK_BUFFER (object); |
81f6e55f | 772 | |
0b0737d1 GM |
773 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
774 | { | |
66322887 | 775 | record_unwind_current_buffer (); |
0b0737d1 GM |
776 | Fset_buffer (object); |
777 | } | |
778 | ||
d615870a DK |
779 | CHECK_NUMBER_COERCE_MARKER (position); |
780 | ||
b7e047fb | 781 | initial_value = Fget_char_property (position, prop, object); |
81f6e55f | 782 | |
b7e047fb | 783 | if (NILP (limit)) |
85cc6738 | 784 | XSETFASTINT (limit, ZV); |
b7e047fb | 785 | else |
b7826503 | 786 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 787 | |
85cc6738 | 788 | if (XFASTINT (position) >= XFASTINT (limit)) |
0b0737d1 | 789 | { |
85cc6738 RS |
790 | position = limit; |
791 | if (XFASTINT (position) > ZV) | |
792 | XSETFASTINT (position, ZV); | |
0b0737d1 | 793 | } |
85cc6738 RS |
794 | else |
795 | while (1) | |
796 | { | |
797 | position = Fnext_char_property_change (position, limit); | |
798 | if (XFASTINT (position) >= XFASTINT (limit)) | |
799 | { | |
800 | position = limit; | |
801 | break; | |
802 | } | |
803 | ||
804 | value = Fget_char_property (position, prop, object); | |
805 | if (!EQ (value, initial_value)) | |
806 | break; | |
807 | } | |
0b0737d1 GM |
808 | |
809 | unbind_to (count, Qnil); | |
810 | } | |
811 | ||
b7e047fb | 812 | return position; |
0b0737d1 GM |
813 | } |
814 | ||
a7ca3326 | 815 | DEFUN ("previous-single-char-property-change", |
b7e047fb MB |
816 | Fprevious_single_char_property_change, |
817 | Sprevious_single_char_property_change, 2, 4, 0, | |
8c1a1077 PJ |
818 | doc: /* Return the position of previous text property or overlay change for a specific property. |
819 | Scans characters backward from POSITION till it finds | |
820 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
821 | If the optional third argument OBJECT is a buffer (or nil, which means |
822 | the current buffer), POSITION is a buffer position (integer or marker). | |
823 | If OBJECT is a string, POSITION is a 0-based index into it. | |
824 | ||
85cc6738 RS |
825 | In a string, scan runs to the start of the string. |
826 | In a buffer, it runs to (point-min), and the value cannot be less than that. | |
827 | ||
8c1a1077 PJ |
828 | The property values are compared with `eq'. |
829 | If the property is constant all the way to the start of OBJECT, return the | |
830 | first valid position in OBJECT. | |
e531bdff DA |
831 | If the optional fourth argument LIMIT is non-nil, don't search back past |
832 | position LIMIT; return LIMIT if nothing is found before reaching LIMIT. */) | |
5842a27b | 833 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
b7e047fb MB |
834 | { |
835 | if (STRINGP (object)) | |
836 | { | |
837 | position = Fprevious_single_property_change (position, prop, object, limit); | |
838 | if (NILP (position)) | |
839 | { | |
840 | if (NILP (limit)) | |
1e02f3cb | 841 | position = make_number (0); |
b7e047fb | 842 | else |
d615870a DK |
843 | { |
844 | CHECK_NUMBER (limit); | |
845 | position = limit; | |
846 | } | |
b7e047fb MB |
847 | } |
848 | } | |
849 | else | |
850 | { | |
d311d28c | 851 | ptrdiff_t count = SPECPDL_INDEX (); |
b7e047fb MB |
852 | |
853 | if (! NILP (object)) | |
b7826503 | 854 | CHECK_BUFFER (object); |
81f6e55f | 855 | |
b7e047fb MB |
856 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
857 | { | |
66322887 | 858 | record_unwind_current_buffer (); |
b7e047fb MB |
859 | Fset_buffer (object); |
860 | } | |
81f6e55f | 861 | |
d615870a DK |
862 | CHECK_NUMBER_COERCE_MARKER (position); |
863 | ||
b7e047fb | 864 | if (NILP (limit)) |
85cc6738 | 865 | XSETFASTINT (limit, BEGV); |
b7e047fb | 866 | else |
b7826503 | 867 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 868 | |
ce6b02e0 | 869 | if (XFASTINT (position) <= XFASTINT (limit)) |
85cc6738 RS |
870 | { |
871 | position = limit; | |
872 | if (XFASTINT (position) < BEGV) | |
873 | XSETFASTINT (position, BEGV); | |
874 | } | |
ce6b02e0 | 875 | else |
b7e047fb | 876 | { |
85cc6738 RS |
877 | Lisp_Object initial_value |
878 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
879 | prop, object); | |
81f6e55f | 880 | |
85cc6738 | 881 | while (1) |
ce6b02e0 MB |
882 | { |
883 | position = Fprevious_char_property_change (position, limit); | |
0b0737d1 | 884 | |
ce6b02e0 MB |
885 | if (XFASTINT (position) <= XFASTINT (limit)) |
886 | { | |
887 | position = limit; | |
888 | break; | |
889 | } | |
890 | else | |
891 | { | |
85cc6738 RS |
892 | Lisp_Object value |
893 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
894 | prop, object); | |
ce6b02e0 MB |
895 | |
896 | if (!EQ (value, initial_value)) | |
897 | break; | |
898 | } | |
899 | } | |
b7e047fb MB |
900 | } |
901 | ||
902 | unbind_to (count, Qnil); | |
903 | } | |
904 | ||
905 | return position; | |
906 | } | |
fcab51aa | 907 | \f |
a7ca3326 | 908 | DEFUN ("next-property-change", Fnext_property_change, |
111b637d | 909 | Snext_property_change, 1, 3, 0, |
8c1a1077 PJ |
910 | doc: /* Return the position of next property change. |
911 | Scans characters forward from POSITION in OBJECT till it finds | |
912 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
913 | If the optional second argument OBJECT is a buffer (or nil, which means |
914 | the current buffer), POSITION is a buffer position (integer or marker). | |
915 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
916 | Return nil if the property is constant all the way to the end of OBJECT. |
917 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
918 | ||
919 | If the optional third argument LIMIT is non-nil, don't search | |
920 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 921 | (Lisp_Object position, Lisp_Object object, Lisp_Object limit) |
d418ef42 JA |
922 | { |
923 | register INTERVAL i, next; | |
924 | ||
5fbe2a44 | 925 | if (NILP (object)) |
c8a4fc3d | 926 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 927 | |
3a232704 | 928 | if (!NILP (limit) && !EQ (limit, Qt)) |
b7826503 | 929 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 930 | |
1f5e848a | 931 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 | 932 | |
041aa96f RS |
933 | /* If LIMIT is t, return start of next interval--don't |
934 | bother checking further intervals. */ | |
935 | if (EQ (limit, Qt)) | |
936 | { | |
77c7bcb1 | 937 | if (!i) |
44214c1b RS |
938 | next = i; |
939 | else | |
940 | next = next_interval (i); | |
81f6e55f | 941 | |
77c7bcb1 | 942 | if (!next) |
1f5e848a | 943 | XSETFASTINT (position, (STRINGP (object) |
d5db4077 | 944 | ? SCHARS (object) |
1f5e848a | 945 | : BUF_ZV (XBUFFER (object)))); |
c7b6dfa6 | 946 | else |
ad077db0 | 947 | XSETFASTINT (position, next->position); |
1f5e848a | 948 | return position; |
041aa96f RS |
949 | } |
950 | ||
77c7bcb1 | 951 | if (!i) |
44214c1b RS |
952 | return limit; |
953 | ||
954 | next = next_interval (i); | |
955 | ||
77c7bcb1 | 956 | while (next && intervals_equal (i, next) |
ad077db0 | 957 | && (NILP (limit) || next->position < XFASTINT (limit))) |
d418ef42 JA |
958 | next = next_interval (next); |
959 | ||
77c7bcb1 | 960 | if (!next |
52c0f270 CY |
961 | || (next->position |
962 | >= (INTEGERP (limit) | |
963 | ? XFASTINT (limit) | |
964 | : (STRINGP (object) | |
965 | ? SCHARS (object) | |
966 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 967 | return limit; |
52c0f270 CY |
968 | else |
969 | return make_number (next->position); | |
19e1c426 RS |
970 | } |
971 | ||
a7ca3326 | 972 | DEFUN ("next-single-property-change", Fnext_single_property_change, |
111b637d | 973 | Snext_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
974 | doc: /* Return the position of next property change for a specific property. |
975 | Scans characters forward from POSITION till it finds | |
976 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
977 | If the optional third argument OBJECT is a buffer (or nil, which means |
978 | the current buffer), POSITION is a buffer position (integer or marker). | |
979 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
980 | The property values are compared with `eq'. |
981 | Return nil if the property is constant all the way to the end of OBJECT. | |
982 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
983 | ||
984 | If the optional fourth argument LIMIT is non-nil, don't search | |
985 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 986 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
9c79dd1b JA |
987 | { |
988 | register INTERVAL i, next; | |
989 | register Lisp_Object here_val; | |
990 | ||
5fbe2a44 | 991 | if (NILP (object)) |
c8a4fc3d | 992 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 993 | |
1387d54e | 994 | if (!NILP (limit)) |
b7826503 | 995 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 996 | |
1f5e848a | 997 | i = validate_interval_range (object, &position, &position, soft); |
77c7bcb1 | 998 | if (!i) |
111b637d | 999 | return limit; |
9c79dd1b | 1000 | |
6a0486dd | 1001 | here_val = textget (i->plist, prop); |
9c79dd1b | 1002 | next = next_interval (i); |
77c7bcb1 | 1003 | while (next |
111b637d | 1004 | && EQ (here_val, textget (next->plist, prop)) |
ad077db0 | 1005 | && (NILP (limit) || next->position < XFASTINT (limit))) |
9c79dd1b JA |
1006 | next = next_interval (next); |
1007 | ||
77c7bcb1 | 1008 | if (!next |
52c0f270 CY |
1009 | || (next->position |
1010 | >= (INTEGERP (limit) | |
1011 | ? XFASTINT (limit) | |
1012 | : (STRINGP (object) | |
1013 | ? SCHARS (object) | |
1014 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 1015 | return limit; |
52c0f270 CY |
1016 | else |
1017 | return make_number (next->position); | |
9c79dd1b JA |
1018 | } |
1019 | ||
a7ca3326 | 1020 | DEFUN ("previous-property-change", Fprevious_property_change, |
111b637d | 1021 | Sprevious_property_change, 1, 3, 0, |
8c1a1077 PJ |
1022 | doc: /* Return the position of previous property change. |
1023 | Scans characters backwards from POSITION in OBJECT till it finds | |
1024 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
1025 | If the optional second argument OBJECT is a buffer (or nil, which means |
1026 | the current buffer), POSITION is a buffer position (integer or marker). | |
1027 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1028 | Return nil if the property is constant all the way to the start of OBJECT. |
1029 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1030 | ||
1031 | If the optional third argument LIMIT is non-nil, don't search | |
1032 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
5842a27b | 1033 | (Lisp_Object position, Lisp_Object object, Lisp_Object limit) |
d418ef42 JA |
1034 | { |
1035 | register INTERVAL i, previous; | |
1036 | ||
5fbe2a44 | 1037 | if (NILP (object)) |
c8a4fc3d | 1038 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1039 | |
1387d54e | 1040 | if (!NILP (limit)) |
b7826503 | 1041 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1042 | |
1f5e848a | 1043 | i = validate_interval_range (object, &position, &position, soft); |
77c7bcb1 | 1044 | if (!i) |
111b637d | 1045 | return limit; |
d418ef42 | 1046 | |
53b7feec | 1047 | /* Start with the interval containing the char before point. */ |
1f5e848a | 1048 | if (i->position == XFASTINT (position)) |
53b7feec RS |
1049 | i = previous_interval (i); |
1050 | ||
d418ef42 | 1051 | previous = previous_interval (i); |
77c7bcb1 | 1052 | while (previous && intervals_equal (previous, i) |
111b637d | 1053 | && (NILP (limit) |
ad077db0 | 1054 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
d418ef42 | 1055 | previous = previous_interval (previous); |
d418ef42 | 1056 | |
77c7bcb1 | 1057 | if (!previous |
52c0f270 CY |
1058 | || (previous->position + LENGTH (previous) |
1059 | <= (INTEGERP (limit) | |
1060 | ? XFASTINT (limit) | |
1061 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1062 | return limit; | |
1063 | else | |
1064 | return make_number (previous->position + LENGTH (previous)); | |
d418ef42 JA |
1065 | } |
1066 | ||
a7ca3326 | 1067 | DEFUN ("previous-single-property-change", Fprevious_single_property_change, |
111b637d | 1068 | Sprevious_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
1069 | doc: /* Return the position of previous property change for a specific property. |
1070 | Scans characters backward from POSITION till it finds | |
1071 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
1072 | If the optional third argument OBJECT is a buffer (or nil, which means |
1073 | the current buffer), POSITION is a buffer position (integer or marker). | |
1074 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1075 | The property values are compared with `eq'. |
1076 | Return nil if the property is constant all the way to the start of OBJECT. | |
1077 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1078 | ||
1079 | If the optional fourth argument LIMIT is non-nil, don't search | |
1080 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
5842a27b | 1081 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
9c79dd1b JA |
1082 | { |
1083 | register INTERVAL i, previous; | |
1084 | register Lisp_Object here_val; | |
1085 | ||
5fbe2a44 | 1086 | if (NILP (object)) |
c8a4fc3d | 1087 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1088 | |
1387d54e | 1089 | if (!NILP (limit)) |
b7826503 | 1090 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1091 | |
1f5e848a | 1092 | i = validate_interval_range (object, &position, &position, soft); |
9c79dd1b | 1093 | |
53b7feec | 1094 | /* Start with the interval containing the char before point. */ |
77c7bcb1 | 1095 | if (i && i->position == XFASTINT (position)) |
53b7feec RS |
1096 | i = previous_interval (i); |
1097 | ||
77c7bcb1 | 1098 | if (!i) |
6873cfa3 KH |
1099 | return limit; |
1100 | ||
6a0486dd | 1101 | here_val = textget (i->plist, prop); |
9c79dd1b | 1102 | previous = previous_interval (i); |
77c7bcb1 | 1103 | while (previous |
111b637d RS |
1104 | && EQ (here_val, textget (previous->plist, prop)) |
1105 | && (NILP (limit) | |
ad077db0 | 1106 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
9c79dd1b | 1107 | previous = previous_interval (previous); |
9c79dd1b | 1108 | |
77c7bcb1 | 1109 | if (!previous |
52c0f270 CY |
1110 | || (previous->position + LENGTH (previous) |
1111 | <= (INTEGERP (limit) | |
1112 | ? XFASTINT (limit) | |
1113 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1114 | return limit; | |
1115 | else | |
1116 | return make_number (previous->position + LENGTH (previous)); | |
9c79dd1b | 1117 | } |
fcab51aa | 1118 | \f |
c98da214 RS |
1119 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1120 | ||
a7ca3326 | 1121 | DEFUN ("add-text-properties", Fadd_text_properties, |
5fbe2a44 | 1122 | Sadd_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1123 | doc: /* Add properties to the text from START to END. |
1124 | The third argument PROPERTIES is a property list | |
81f6e55f FP |
1125 | specifying the property values to add. If the optional fourth argument |
1126 | OBJECT is a buffer (or nil, which means the current buffer), | |
1127 | START and END are buffer positions (integers or markers). | |
1128 | If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 | 1129 | Return t if any property value actually changed, nil otherwise. */) |
5842a27b | 1130 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
d418ef42 | 1131 | { |
ecc0fdd4 PE |
1132 | INTERVAL i, unchanged; |
1133 | ptrdiff_t s, len; | |
1134 | bool modified = 0; | |
c98da214 | 1135 | struct gcpro gcpro1; |
81c23309 | 1136 | bool first_time = 1; |
d418ef42 JA |
1137 | |
1138 | properties = validate_plist (properties); | |
1139 | if (NILP (properties)) | |
1140 | return Qnil; | |
1141 | ||
5fbe2a44 | 1142 | if (NILP (object)) |
c8a4fc3d | 1143 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1144 | |
18f2ac09 | 1145 | retry: |
d418ef42 | 1146 | i = validate_interval_range (object, &start, &end, hard); |
77c7bcb1 | 1147 | if (!i) |
d418ef42 JA |
1148 | return Qnil; |
1149 | ||
1150 | s = XINT (start); | |
1151 | len = XINT (end) - s; | |
1152 | ||
c98da214 RS |
1153 | /* No need to protect OBJECT, because we GC only if it's a buffer, |
1154 | and live buffers are always protected. */ | |
1155 | GCPRO1 (properties); | |
1156 | ||
0248b0d7 EZ |
1157 | /* If this interval already has the properties, we can skip it. */ |
1158 | if (interval_has_all_properties (properties, i)) | |
d418ef42 | 1159 | { |
ecc0fdd4 PE |
1160 | ptrdiff_t got = LENGTH (i) - (s - i->position); |
1161 | ||
1162 | do | |
1163 | { | |
1164 | if (got >= len) | |
1165 | RETURN_UNGCPRO (Qnil); | |
1166 | len -= got; | |
1167 | i = next_interval (i); | |
1168 | got = LENGTH (i); | |
1169 | } | |
1170 | while (interval_has_all_properties (properties, i)); | |
0248b0d7 EZ |
1171 | } |
1172 | else if (i->position != s) | |
1173 | { | |
1174 | /* If we're not starting on an interval boundary, we have to | |
1175 | split this interval. */ | |
1176 | unchanged = i; | |
1177 | i = split_interval_right (unchanged, s - unchanged->position); | |
1178 | copy_properties (unchanged, i); | |
d418ef42 JA |
1179 | } |
1180 | ||
18f2ac09 EZ |
1181 | if (BUFFERP (object) && first_time) |
1182 | { | |
1183 | ptrdiff_t prev_total_length = TOTAL_LENGTH (i); | |
1184 | ptrdiff_t prev_pos = i->position; | |
1185 | ||
1186 | modify_region (object, start, end); | |
1187 | /* If someone called us recursively as a side effect of | |
1188 | modify_region, and changed the intervals behind our back | |
1189 | (could happen if lock_file, called by prepare_to_modify_buffer, | |
1190 | triggers redisplay, and that calls add-text-properties again | |
1191 | in the same buffer), we cannot continue with I, because its | |
1192 | data changed. So we restart the interval analysis anew. */ | |
1193 | if (TOTAL_LENGTH (i) != prev_total_length | |
1194 | || i->position != prev_pos) | |
1195 | { | |
1196 | first_time = 0; | |
1197 | goto retry; | |
1198 | } | |
1199 | } | |
26c76ace | 1200 | |
daa5e28f | 1201 | /* We are at the beginning of interval I, with LEN chars to scan. */ |
caa31568 | 1202 | for (;;) |
d418ef42 | 1203 | { |
cce7fefc | 1204 | eassert (i != 0); |
d4b530ad | 1205 | |
d418ef42 JA |
1206 | if (LENGTH (i) >= len) |
1207 | { | |
c98da214 RS |
1208 | /* We can UNGCPRO safely here, because there will be just |
1209 | one more chance to gc, in the next call to add_properties, | |
1210 | and after that we will not need PROPERTIES or OBJECT again. */ | |
1211 | UNGCPRO; | |
1212 | ||
d418ef42 | 1213 | if (interval_has_all_properties (properties, i)) |
26c76ace | 1214 | { |
2a631db1 RS |
1215 | if (BUFFERP (object)) |
1216 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1217 | XINT (end) - XINT (start)); | |
26c76ace | 1218 | |
0248b0d7 EZ |
1219 | eassert (modified); |
1220 | return Qt; | |
26c76ace | 1221 | } |
d418ef42 JA |
1222 | |
1223 | if (LENGTH (i) == len) | |
1224 | { | |
d4b530ad | 1225 | add_properties (properties, i, object); |
2a631db1 RS |
1226 | if (BUFFERP (object)) |
1227 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1228 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1229 | return Qt; |
1230 | } | |
1231 | ||
1232 | /* i doesn't have the properties, and goes past the change limit */ | |
1233 | unchanged = i; | |
ad9c1940 | 1234 | i = split_interval_left (unchanged, len); |
d418ef42 | 1235 | copy_properties (unchanged, i); |
d4b530ad | 1236 | add_properties (properties, i, object); |
2a631db1 RS |
1237 | if (BUFFERP (object)) |
1238 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1239 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1240 | return Qt; |
1241 | } | |
1242 | ||
1243 | len -= LENGTH (i); | |
ecc0fdd4 | 1244 | modified |= add_properties (properties, i, object); |
d418ef42 JA |
1245 | i = next_interval (i); |
1246 | } | |
1247 | } | |
1248 | ||
c98da214 RS |
1249 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1250 | ||
a7ca3326 | 1251 | DEFUN ("put-text-property", Fput_text_property, |
d4b530ad | 1252 | Sput_text_property, 4, 5, 0, |
8c1a1077 PJ |
1253 | doc: /* Set one property of the text from START to END. |
1254 | The third and fourth arguments PROPERTY and VALUE | |
1255 | specify the property to add. | |
81f6e55f FP |
1256 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1257 | the current buffer), START and END are buffer positions (integers or | |
1258 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1259 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
d4b530ad RS |
1260 | { |
1261 | Fadd_text_properties (start, end, | |
1f5e848a | 1262 | Fcons (property, Fcons (value, Qnil)), |
d4b530ad RS |
1263 | object); |
1264 | return Qnil; | |
1265 | } | |
1266 | ||
a7ca3326 | 1267 | DEFUN ("set-text-properties", Fset_text_properties, |
5fbe2a44 | 1268 | Sset_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1269 | doc: /* Completely replace properties of text from START to END. |
1270 | The third argument PROPERTIES is the new property list. | |
81f6e55f FP |
1271 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1272 | the current buffer), START and END are buffer positions (integers or | |
1273 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 PJ |
1274 | If PROPERTIES is nil, the effect is to remove all properties from |
1275 | the designated part of OBJECT. */) | |
5842a27b | 1276 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
0087ade6 GM |
1277 | { |
1278 | return set_text_properties (start, end, properties, object, Qt); | |
1279 | } | |
1280 | ||
1281 | ||
1282 | /* Replace properties of text from START to END with new list of | |
1283 | properties PROPERTIES. OBJECT is the buffer or string containing | |
1284 | the text. OBJECT nil means use the current buffer. | |
9c345213 AM |
1285 | COHERENT_CHANGE_P nil means this is being called as an internal |
1286 | subroutine, rather than as a change primitive with checking of | |
1287 | read-only, invoking change hooks, etc.. Value is nil if the | |
1288 | function _detected_ that it did not replace any properties, non-nil | |
1289 | otherwise. */ | |
0087ade6 GM |
1290 | |
1291 | Lisp_Object | |
971de7fb | 1292 | set_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object, Lisp_Object coherent_change_p) |
d418ef42 | 1293 | { |
28ff4293 | 1294 | register INTERVAL i; |
33d7d0df RS |
1295 | Lisp_Object ostart, oend; |
1296 | ||
1297 | ostart = start; | |
1298 | oend = end; | |
d418ef42 | 1299 | |
1f5e848a | 1300 | properties = validate_plist (properties); |
d418ef42 | 1301 | |
5fbe2a44 | 1302 | if (NILP (object)) |
c8a4fc3d | 1303 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1304 | |
919fa9cb RS |
1305 | /* If we want no properties for a whole string, |
1306 | get rid of its intervals. */ | |
1f5e848a | 1307 | if (NILP (properties) && STRINGP (object) |
919fa9cb | 1308 | && XFASTINT (start) == 0 |
d5db4077 | 1309 | && XFASTINT (end) == SCHARS (object)) |
919fa9cb | 1310 | { |
0c94c8d6 | 1311 | if (!string_intervals (object)) |
537562fa | 1312 | return Qnil; |
26c76ace | 1313 | |
0c94c8d6 | 1314 | set_string_intervals (object, NULL); |
919fa9cb RS |
1315 | return Qt; |
1316 | } | |
1317 | ||
facc570e | 1318 | i = validate_interval_range (object, &start, &end, soft); |
919fa9cb | 1319 | |
77c7bcb1 | 1320 | if (!i) |
facc570e | 1321 | { |
1f5e848a EN |
1322 | /* If buffer has no properties, and we want none, return now. */ |
1323 | if (NILP (properties)) | |
facc570e RS |
1324 | return Qnil; |
1325 | ||
33d7d0df RS |
1326 | /* Restore the original START and END values |
1327 | because validate_interval_range increments them for strings. */ | |
1328 | start = ostart; | |
1329 | end = oend; | |
1330 | ||
facc570e RS |
1331 | i = validate_interval_range (object, &start, &end, hard); |
1332 | /* This can return if start == end. */ | |
77c7bcb1 | 1333 | if (!i) |
facc570e RS |
1334 | return Qnil; |
1335 | } | |
d418ef42 | 1336 | |
9c345213 | 1337 | if (BUFFERP (object) && !NILP (coherent_change_p)) |
20edc1c9 | 1338 | modify_region (object, start, end); |
26c76ace | 1339 | |
78ff4175 RS |
1340 | set_text_properties_1 (start, end, properties, object, i); |
1341 | ||
9c345213 | 1342 | if (BUFFERP (object) && !NILP (coherent_change_p)) |
78ff4175 RS |
1343 | signal_after_change (XINT (start), XINT (end) - XINT (start), |
1344 | XINT (end) - XINT (start)); | |
1345 | return Qt; | |
1346 | } | |
1347 | ||
1348 | /* Replace properties of text from START to END with new list of | |
1687fb14 | 1349 | properties PROPERTIES. OBJECT is the buffer or string containing |
78ff4175 | 1350 | the text. This does not obey any hooks. |
1687fb14 | 1351 | You should provide the interval that START is located in as I. |
49f68fd2 | 1352 | START and END can be in any order. */ |
78ff4175 RS |
1353 | |
1354 | void | |
1687fb14 | 1355 | set_text_properties_1 (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object, INTERVAL i) |
78ff4175 | 1356 | { |
77c7bcb1 | 1357 | register INTERVAL prev_changed = NULL; |
d311d28c | 1358 | register ptrdiff_t s, len; |
78ff4175 RS |
1359 | INTERVAL unchanged; |
1360 | ||
67769ffc | 1361 | if (XINT (start) < XINT (end)) |
49f68fd2 | 1362 | { |
67769ffc PE |
1363 | s = XINT (start); |
1364 | len = XINT (end) - s; | |
49f68fd2 | 1365 | } |
67769ffc PE |
1366 | else if (XINT (end) < XINT (start)) |
1367 | { | |
1368 | s = XINT (end); | |
1369 | len = XINT (start) - s; | |
1370 | } | |
1371 | else | |
1372 | return; | |
49f68fd2 | 1373 | |
1687fb14 | 1374 | eassert (i); |
78ff4175 | 1375 | |
d418ef42 JA |
1376 | if (i->position != s) |
1377 | { | |
1378 | unchanged = i; | |
ad9c1940 | 1379 | i = split_interval_right (unchanged, s - unchanged->position); |
7855e674 | 1380 | |
d418ef42 JA |
1381 | if (LENGTH (i) > len) |
1382 | { | |
9c79dd1b | 1383 | copy_properties (unchanged, i); |
ad9c1940 | 1384 | i = split_interval_left (i, len); |
1687fb14 | 1385 | set_properties (properties, i, object); |
78ff4175 | 1386 | return; |
d418ef42 JA |
1387 | } |
1388 | ||
1687fb14 | 1389 | set_properties (properties, i, object); |
daa5e28f | 1390 | |
9c79dd1b | 1391 | if (LENGTH (i) == len) |
78ff4175 | 1392 | return; |
9c79dd1b JA |
1393 | |
1394 | prev_changed = i; | |
d418ef42 JA |
1395 | len -= LENGTH (i); |
1396 | i = next_interval (i); | |
1397 | } | |
1398 | ||
1e792e4d PE |
1399 | /* We are starting at the beginning of an interval I. LEN is positive. */ |
1400 | do | |
d418ef42 | 1401 | { |
cce7fefc | 1402 | eassert (i != 0); |
d4b530ad | 1403 | |
d418ef42 JA |
1404 | if (LENGTH (i) >= len) |
1405 | { | |
cd7d971d | 1406 | if (LENGTH (i) > len) |
ad9c1940 | 1407 | i = split_interval_left (i, len); |
d418ef42 | 1408 | |
6f232881 RS |
1409 | /* We have to call set_properties even if we are going to |
1410 | merge the intervals, so as to make the undo records | |
1411 | and cause redisplay to happen. */ | |
1687fb14 | 1412 | set_properties (properties, i, object); |
77c7bcb1 | 1413 | if (prev_changed) |
9c79dd1b | 1414 | merge_interval_left (i); |
78ff4175 | 1415 | return; |
d418ef42 JA |
1416 | } |
1417 | ||
1418 | len -= LENGTH (i); | |
6f232881 RS |
1419 | |
1420 | /* We have to call set_properties even if we are going to | |
1421 | merge the intervals, so as to make the undo records | |
1422 | and cause redisplay to happen. */ | |
1687fb14 | 1423 | set_properties (properties, i, object); |
77c7bcb1 | 1424 | if (!prev_changed) |
6f232881 | 1425 | prev_changed = i; |
9c79dd1b JA |
1426 | else |
1427 | prev_changed = i = merge_interval_left (i); | |
1428 | ||
d418ef42 JA |
1429 | i = next_interval (i); |
1430 | } | |
1e792e4d | 1431 | while (len > 0); |
d418ef42 JA |
1432 | } |
1433 | ||
a7ca3326 | 1434 | DEFUN ("remove-text-properties", Fremove_text_properties, |
5fbe2a44 | 1435 | Sremove_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1436 | doc: /* Remove some properties from text from START to END. |
1437 | The third argument PROPERTIES is a property list | |
1438 | whose property names specify the properties to remove. | |
1439 | \(The values stored in PROPERTIES are ignored.) | |
81f6e55f FP |
1440 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1441 | the current buffer), START and END are buffer positions (integers or | |
1442 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
1443 | Return t if any property was actually removed, nil otherwise. | |
1444 | ||
518c0b83 | 1445 | Use `set-text-properties' if you want to remove all text properties. */) |
5842a27b | 1446 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
d418ef42 | 1447 | { |
ecc0fdd4 PE |
1448 | INTERVAL i, unchanged; |
1449 | ptrdiff_t s, len; | |
1450 | bool modified = 0; | |
81c23309 | 1451 | bool first_time = 1; |
d418ef42 | 1452 | |
5fbe2a44 | 1453 | if (NILP (object)) |
c8a4fc3d | 1454 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1455 | |
18f2ac09 | 1456 | retry: |
d418ef42 | 1457 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1458 | if (!i) |
d418ef42 JA |
1459 | return Qnil; |
1460 | ||
1461 | s = XINT (start); | |
1462 | len = XINT (end) - s; | |
9c79dd1b | 1463 | |
0248b0d7 EZ |
1464 | /* If there are no properties on this entire interval, return. */ |
1465 | if (! interval_has_some_properties (properties, i)) | |
d418ef42 | 1466 | { |
ecc0fdd4 PE |
1467 | ptrdiff_t got = LENGTH (i) - (s - i->position); |
1468 | ||
1469 | do | |
1470 | { | |
1471 | if (got >= len) | |
1472 | return Qnil; | |
1473 | len -= got; | |
1474 | i = next_interval (i); | |
1475 | got = LENGTH (i); | |
1476 | } | |
1477 | while (! interval_has_some_properties (properties, i)); | |
0248b0d7 EZ |
1478 | } |
1479 | /* Split away the beginning of this interval; what we don't | |
1480 | want to modify. */ | |
1481 | else if (i->position != s) | |
1482 | { | |
1483 | unchanged = i; | |
1484 | i = split_interval_right (unchanged, s - unchanged->position); | |
1485 | copy_properties (unchanged, i); | |
d418ef42 JA |
1486 | } |
1487 | ||
18f2ac09 EZ |
1488 | if (BUFFERP (object) && first_time) |
1489 | { | |
1490 | ptrdiff_t prev_total_length = TOTAL_LENGTH (i); | |
1491 | ptrdiff_t prev_pos = i->position; | |
1492 | ||
1493 | modify_region (object, start, end); | |
1494 | /* If someone called us recursively as a side effect of | |
1495 | modify_region, and changed the intervals behind our back | |
1496 | (could happen if lock_file, called by prepare_to_modify_buffer, | |
1497 | triggers redisplay, and that calls add-text-properties again | |
1498 | in the same buffer), we cannot continue with I, because its | |
1499 | data changed. So we restart the interval analysis anew. */ | |
1500 | if (TOTAL_LENGTH (i) != prev_total_length | |
1501 | || i->position != prev_pos) | |
1502 | { | |
1503 | first_time = 0; | |
1504 | goto retry; | |
1505 | } | |
1506 | } | |
26c76ace | 1507 | |
d418ef42 | 1508 | /* We are at the beginning of an interval, with len to scan */ |
caa31568 | 1509 | for (;;) |
d418ef42 | 1510 | { |
cce7fefc | 1511 | eassert (i != 0); |
d4b530ad | 1512 | |
d418ef42 JA |
1513 | if (LENGTH (i) >= len) |
1514 | { | |
1f5e848a | 1515 | if (! interval_has_some_properties (properties, i)) |
0248b0d7 EZ |
1516 | { |
1517 | eassert (modified); | |
1518 | if (BUFFERP (object)) | |
1519 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1520 | XINT (end) - XINT (start)); | |
1521 | return Qt; | |
1522 | } | |
d418ef42 JA |
1523 | |
1524 | if (LENGTH (i) == len) | |
1525 | { | |
11713b6d RS |
1526 | remove_properties (properties, Qnil, i, object); |
1527 | if (BUFFERP (object)) | |
1528 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1529 | XINT (end) - XINT (start)); | |
1530 | return Qt; | |
1531 | } | |
1532 | ||
1533 | /* i has the properties, and goes past the change limit */ | |
1534 | unchanged = i; | |
1535 | i = split_interval_left (i, len); | |
1536 | copy_properties (unchanged, i); | |
1537 | remove_properties (properties, Qnil, i, object); | |
1538 | if (BUFFERP (object)) | |
1539 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1540 | XINT (end) - XINT (start)); | |
1541 | return Qt; | |
1542 | } | |
1543 | ||
1544 | len -= LENGTH (i); | |
ecc0fdd4 | 1545 | modified |= remove_properties (properties, Qnil, i, object); |
11713b6d RS |
1546 | i = next_interval (i); |
1547 | } | |
1548 | } | |
1549 | ||
a7ca3326 | 1550 | DEFUN ("remove-list-of-text-properties", Fremove_list_of_text_properties, |
11713b6d RS |
1551 | Sremove_list_of_text_properties, 3, 4, 0, |
1552 | doc: /* Remove some properties from text from START to END. | |
1553 | The third argument LIST-OF-PROPERTIES is a list of property names to remove. | |
81f6e55f FP |
1554 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1555 | the current buffer), START and END are buffer positions (integers or | |
1556 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
11713b6d | 1557 | Return t if any property was actually removed, nil otherwise. */) |
5842a27b | 1558 | (Lisp_Object start, Lisp_Object end, Lisp_Object list_of_properties, Lisp_Object object) |
11713b6d | 1559 | { |
ecc0fdd4 PE |
1560 | INTERVAL i, unchanged; |
1561 | ptrdiff_t s, len; | |
1562 | bool modified = 0; | |
11713b6d RS |
1563 | Lisp_Object properties; |
1564 | properties = list_of_properties; | |
1565 | ||
1566 | if (NILP (object)) | |
1567 | XSETBUFFER (object, current_buffer); | |
1568 | ||
1569 | i = validate_interval_range (object, &start, &end, soft); | |
77c7bcb1 | 1570 | if (!i) |
11713b6d RS |
1571 | return Qnil; |
1572 | ||
1573 | s = XINT (start); | |
1574 | len = XINT (end) - s; | |
1575 | ||
0248b0d7 EZ |
1576 | /* If there are no properties on the interval, return. */ |
1577 | if (! interval_has_some_properties_list (properties, i)) | |
11713b6d | 1578 | { |
ecc0fdd4 PE |
1579 | ptrdiff_t got = LENGTH (i) - (s - i->position); |
1580 | ||
1581 | do | |
1582 | { | |
1583 | if (got >= len) | |
1584 | return Qnil; | |
1585 | len -= got; | |
1586 | i = next_interval (i); | |
1587 | got = LENGTH (i); | |
1588 | } | |
1589 | while (! interval_has_some_properties_list (properties, i)); | |
0248b0d7 EZ |
1590 | } |
1591 | /* Split away the beginning of this interval; what we don't | |
1592 | want to modify. */ | |
1593 | else if (i->position != s) | |
1594 | { | |
1595 | unchanged = i; | |
1596 | i = split_interval_right (unchanged, s - unchanged->position); | |
1597 | copy_properties (unchanged, i); | |
11713b6d RS |
1598 | } |
1599 | ||
9b17c9f5 LH |
1600 | /* We are at the beginning of an interval, with len to scan. |
1601 | The flag `modified' records if changes have been made. | |
1602 | When object is a buffer, we must call modify_region before changes are | |
1603 | made and signal_after_change when we are done. | |
e0f24100 GM |
1604 | We call modify_region before calling remove_properties if modified == 0, |
1605 | and we call signal_after_change before returning if modified != 0. */ | |
11713b6d RS |
1606 | for (;;) |
1607 | { | |
cce7fefc | 1608 | eassert (i != 0); |
11713b6d RS |
1609 | |
1610 | if (LENGTH (i) >= len) | |
1611 | { | |
1612 | if (! interval_has_some_properties_list (properties, i)) | |
ef1b0ba7 SM |
1613 | { |
1614 | if (modified) | |
1615 | { | |
1616 | if (BUFFERP (object)) | |
1617 | signal_after_change (XINT (start), | |
1618 | XINT (end) - XINT (start), | |
1619 | XINT (end) - XINT (start)); | |
1620 | return Qt; | |
1621 | } | |
1622 | else | |
1623 | return Qnil; | |
1624 | } | |
1625 | else if (LENGTH (i) == len) | |
11713b6d | 1626 | { |
9b17c9f5 | 1627 | if (!modified && BUFFERP (object)) |
20edc1c9 | 1628 | modify_region (object, start, end); |
11713b6d | 1629 | remove_properties (Qnil, properties, i, object); |
2a631db1 RS |
1630 | if (BUFFERP (object)) |
1631 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1632 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1633 | return Qt; |
1634 | } | |
ef1b0ba7 SM |
1635 | else |
1636 | { /* i has the properties, and goes past the change limit. */ | |
1637 | unchanged = i; | |
1638 | i = split_interval_left (i, len); | |
1639 | copy_properties (unchanged, i); | |
1640 | if (!modified && BUFFERP (object)) | |
20edc1c9 | 1641 | modify_region (object, start, end); |
ef1b0ba7 SM |
1642 | remove_properties (Qnil, properties, i, object); |
1643 | if (BUFFERP (object)) | |
1644 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1645 | XINT (end) - XINT (start)); | |
1646 | return Qt; | |
1647 | } | |
d418ef42 | 1648 | } |
9b17c9f5 LH |
1649 | if (interval_has_some_properties_list (properties, i)) |
1650 | { | |
1651 | if (!modified && BUFFERP (object)) | |
20edc1c9 | 1652 | modify_region (object, start, end); |
9b17c9f5 LH |
1653 | remove_properties (Qnil, properties, i, object); |
1654 | modified = 1; | |
1655 | } | |
d418ef42 | 1656 | len -= LENGTH (i); |
d418ef42 JA |
1657 | i = next_interval (i); |
1658 | } | |
1659 | } | |
fcab51aa | 1660 | \f |
a7ca3326 | 1661 | DEFUN ("text-property-any", Ftext_property_any, |
ad9c1940 | 1662 | Stext_property_any, 4, 5, 0, |
fa463103 | 1663 | doc: /* Check text from START to END for property PROPERTY equaling VALUE. |
8c1a1077 PJ |
1664 | If so, return the position of the first character whose property PROPERTY |
1665 | is `eq' to VALUE. Otherwise return nil. | |
81f6e55f FP |
1666 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1667 | the current buffer), START and END are buffer positions (integers or | |
1668 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1669 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
ad9c1940 JB |
1670 | { |
1671 | register INTERVAL i; | |
d311d28c | 1672 | register ptrdiff_t e, pos; |
ad9c1940 JB |
1673 | |
1674 | if (NILP (object)) | |
c8a4fc3d | 1675 | XSETBUFFER (object, current_buffer); |
ad9c1940 | 1676 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1677 | if (!i) |
2084fddb | 1678 | return (!NILP (value) || EQ (start, end) ? Qnil : start); |
ad9c1940 JB |
1679 | e = XINT (end); |
1680 | ||
77c7bcb1 | 1681 | while (i) |
ad9c1940 JB |
1682 | { |
1683 | if (i->position >= e) | |
1684 | break; | |
1f5e848a | 1685 | if (EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1686 | { |
1687 | pos = i->position; | |
1688 | if (pos < XINT (start)) | |
1689 | pos = XINT (start); | |
ad077db0 | 1690 | return make_number (pos); |
ad9c1940 JB |
1691 | } |
1692 | i = next_interval (i); | |
1693 | } | |
1694 | return Qnil; | |
1695 | } | |
1696 | ||
1697 | DEFUN ("text-property-not-all", Ftext_property_not_all, | |
1698 | Stext_property_not_all, 4, 5, 0, | |
fa463103 | 1699 | doc: /* Check text from START to END for property PROPERTY not equaling VALUE. |
8c1a1077 PJ |
1700 | If so, return the position of the first character whose property PROPERTY |
1701 | is not `eq' to VALUE. Otherwise, return nil. | |
81f6e55f FP |
1702 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1703 | the current buffer), START and END are buffer positions (integers or | |
1704 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1705 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
ad9c1940 JB |
1706 | { |
1707 | register INTERVAL i; | |
d311d28c | 1708 | register ptrdiff_t s, e; |
ad9c1940 JB |
1709 | |
1710 | if (NILP (object)) | |
c8a4fc3d | 1711 | XSETBUFFER (object, current_buffer); |
ad9c1940 | 1712 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1713 | if (!i) |
916a3119 | 1714 | return (NILP (value) || EQ (start, end)) ? Qnil : start; |
ad9c1940 JB |
1715 | s = XINT (start); |
1716 | e = XINT (end); | |
1717 | ||
77c7bcb1 | 1718 | while (i) |
ad9c1940 JB |
1719 | { |
1720 | if (i->position >= e) | |
1721 | break; | |
1f5e848a | 1722 | if (! EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1723 | { |
1724 | if (i->position > s) | |
1725 | s = i->position; | |
ad077db0 | 1726 | return make_number (s); |
ad9c1940 JB |
1727 | } |
1728 | i = next_interval (i); | |
1729 | } | |
1730 | return Qnil; | |
1731 | } | |
e138dfdc MB |
1732 | |
1733 | \f | |
1734 | /* Return the direction from which the text-property PROP would be | |
1735 | inherited by any new text inserted at POS: 1 if it would be | |
1736 | inherited from the char after POS, -1 if it would be inherited from | |
6f716644 SM |
1737 | the char before POS, and 0 if from neither. |
1738 | BUFFER can be either a buffer or nil (meaning current buffer). */ | |
e138dfdc MB |
1739 | |
1740 | int | |
971de7fb | 1741 | text_property_stickiness (Lisp_Object prop, Lisp_Object pos, Lisp_Object buffer) |
e138dfdc MB |
1742 | { |
1743 | Lisp_Object prev_pos, front_sticky; | |
ecc0fdd4 | 1744 | bool is_rear_sticky = 1, is_front_sticky = 0; /* defaults */ |
cabf1cac | 1745 | Lisp_Object defalt = Fassq (prop, Vtext_property_default_nonsticky); |
e138dfdc | 1746 | |
6f716644 SM |
1747 | if (NILP (buffer)) |
1748 | XSETBUFFER (buffer, current_buffer); | |
1749 | ||
cabf1cac SM |
1750 | if (CONSP (defalt) && !NILP (XCDR (defalt))) |
1751 | is_rear_sticky = 0; | |
1752 | ||
6f716644 | 1753 | if (XINT (pos) > BUF_BEGV (XBUFFER (buffer))) |
e138dfdc MB |
1754 | /* Consider previous character. */ |
1755 | { | |
1756 | Lisp_Object rear_non_sticky; | |
1757 | ||
1758 | prev_pos = make_number (XINT (pos) - 1); | |
6f716644 | 1759 | rear_non_sticky = Fget_text_property (prev_pos, Qrear_nonsticky, buffer); |
e138dfdc MB |
1760 | |
1761 | if (!NILP (CONSP (rear_non_sticky) | |
1762 | ? Fmemq (prop, rear_non_sticky) | |
1763 | : rear_non_sticky)) | |
1764 | /* PROP is rear-non-sticky. */ | |
1765 | is_rear_sticky = 0; | |
1766 | } | |
506d2f9a CY |
1767 | else |
1768 | return 0; | |
e138dfdc MB |
1769 | |
1770 | /* Consider following character. */ | |
506d2f9a CY |
1771 | /* This signals an arg-out-of-range error if pos is outside the |
1772 | buffer's accessible range. */ | |
6f716644 | 1773 | front_sticky = Fget_text_property (pos, Qfront_sticky, buffer); |
e138dfdc MB |
1774 | |
1775 | if (EQ (front_sticky, Qt) | |
1776 | || (CONSP (front_sticky) | |
1777 | && !NILP (Fmemq (prop, front_sticky)))) | |
1778 | /* PROP is inherited from after. */ | |
1779 | is_front_sticky = 1; | |
1780 | ||
1781 | /* Simple cases, where the properties are consistent. */ | |
1782 | if (is_rear_sticky && !is_front_sticky) | |
1783 | return -1; | |
1784 | else if (!is_rear_sticky && is_front_sticky) | |
1785 | return 1; | |
1786 | else if (!is_rear_sticky && !is_front_sticky) | |
1787 | return 0; | |
1788 | ||
1789 | /* The stickiness properties are inconsistent, so we have to | |
1790 | disambiguate. Basically, rear-sticky wins, _except_ if the | |
1791 | property that would be inherited has a value of nil, in which case | |
1792 | front-sticky wins. */ | |
6f716644 SM |
1793 | if (XINT (pos) == BUF_BEGV (XBUFFER (buffer)) |
1794 | || NILP (Fget_text_property (prev_pos, prop, buffer))) | |
e138dfdc MB |
1795 | return 1; |
1796 | else | |
1797 | return -1; | |
1798 | } | |
1799 | ||
fcab51aa | 1800 | \f |
e2ad650c | 1801 | /* Copying properties between objects. */ |
15e4954b | 1802 | |
e2ad650c | 1803 | /* Add properties from START to END of SRC, starting at POS in DEST. |
c98da214 RS |
1804 | SRC and DEST may each refer to strings or buffers. |
1805 | Optional sixth argument PROP causes only that property to be copied. | |
1806 | Properties are copied to DEST as if by `add-text-properties'. | |
1807 | Return t if any property value actually changed, nil otherwise. */ | |
1808 | ||
1809 | /* Note this can GC when DEST is a buffer. */ | |
ad077db0 | 1810 | |
15e4954b | 1811 | Lisp_Object |
971de7fb | 1812 | copy_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object src, Lisp_Object pos, Lisp_Object dest, Lisp_Object prop) |
15e4954b JB |
1813 | { |
1814 | INTERVAL i; | |
1815 | Lisp_Object res; | |
1816 | Lisp_Object stuff; | |
1817 | Lisp_Object plist; | |
d311d28c | 1818 | ptrdiff_t s, e, e2, p, len; |
ecc0fdd4 | 1819 | bool modified = 0; |
c98da214 | 1820 | struct gcpro gcpro1, gcpro2; |
15e4954b JB |
1821 | |
1822 | i = validate_interval_range (src, &start, &end, soft); | |
77c7bcb1 | 1823 | if (!i) |
15e4954b JB |
1824 | return Qnil; |
1825 | ||
b7826503 | 1826 | CHECK_NUMBER_COERCE_MARKER (pos); |
15e4954b JB |
1827 | { |
1828 | Lisp_Object dest_start, dest_end; | |
1829 | ||
d311d28c PE |
1830 | e = XINT (pos) + (XINT (end) - XINT (start)); |
1831 | if (MOST_POSITIVE_FIXNUM < e) | |
1832 | args_out_of_range (pos, end); | |
15e4954b | 1833 | dest_start = pos; |
d311d28c | 1834 | XSETFASTINT (dest_end, e); |
15e4954b JB |
1835 | /* Apply this to a copy of pos; it will try to increment its arguments, |
1836 | which we don't want. */ | |
1837 | validate_interval_range (dest, &dest_start, &dest_end, soft); | |
1838 | } | |
1839 | ||
1840 | s = XINT (start); | |
1841 | e = XINT (end); | |
1842 | p = XINT (pos); | |
1843 | ||
1844 | stuff = Qnil; | |
1845 | ||
1846 | while (s < e) | |
1847 | { | |
1848 | e2 = i->position + LENGTH (i); | |
1849 | if (e2 > e) | |
1850 | e2 = e; | |
1851 | len = e2 - s; | |
1852 | ||
1853 | plist = i->plist; | |
1854 | if (! NILP (prop)) | |
1855 | while (! NILP (plist)) | |
1856 | { | |
1857 | if (EQ (Fcar (plist), prop)) | |
1858 | { | |
1859 | plist = Fcons (prop, Fcons (Fcar (Fcdr (plist)), Qnil)); | |
1860 | break; | |
1861 | } | |
1862 | plist = Fcdr (Fcdr (plist)); | |
1863 | } | |
1864 | if (! NILP (plist)) | |
1865 | { | |
1866 | /* Must defer modifications to the interval tree in case src | |
cdf3e5a2 | 1867 | and dest refer to the same string or buffer. */ |
15e4954b JB |
1868 | stuff = Fcons (Fcons (make_number (p), |
1869 | Fcons (make_number (p + len), | |
1870 | Fcons (plist, Qnil))), | |
1871 | stuff); | |
1872 | } | |
1873 | ||
1874 | i = next_interval (i); | |
77c7bcb1 | 1875 | if (!i) |
15e4954b JB |
1876 | break; |
1877 | ||
1878 | p += len; | |
1879 | s = i->position; | |
1880 | } | |
1881 | ||
c98da214 RS |
1882 | GCPRO2 (stuff, dest); |
1883 | ||
15e4954b JB |
1884 | while (! NILP (stuff)) |
1885 | { | |
1886 | res = Fcar (stuff); | |
1887 | res = Fadd_text_properties (Fcar (res), Fcar (Fcdr (res)), | |
1888 | Fcar (Fcdr (Fcdr (res))), dest); | |
1889 | if (! NILP (res)) | |
ecc0fdd4 | 1890 | modified = 1; |
15e4954b JB |
1891 | stuff = Fcdr (stuff); |
1892 | } | |
1893 | ||
c98da214 RS |
1894 | UNGCPRO; |
1895 | ||
15e4954b JB |
1896 | return modified ? Qt : Qnil; |
1897 | } | |
9dd7eec6 GM |
1898 | |
1899 | ||
1900 | /* Return a list representing the text properties of OBJECT between | |
1901 | START and END. if PROP is non-nil, report only on that property. | |
1902 | Each result list element has the form (S E PLIST), where S and E | |
1903 | are positions in OBJECT and PLIST is a property list containing the | |
1904 | text properties of OBJECT between S and E. Value is nil if OBJECT | |
1905 | doesn't contain text properties between START and END. */ | |
1906 | ||
1907 | Lisp_Object | |
971de7fb | 1908 | text_property_list (Lisp_Object object, Lisp_Object start, Lisp_Object end, Lisp_Object prop) |
9dd7eec6 GM |
1909 | { |
1910 | struct interval *i; | |
1911 | Lisp_Object result; | |
9dd7eec6 GM |
1912 | |
1913 | result = Qnil; | |
81f6e55f | 1914 | |
9dd7eec6 | 1915 | i = validate_interval_range (object, &start, &end, soft); |
77c7bcb1 | 1916 | if (i) |
9dd7eec6 | 1917 | { |
d311d28c PE |
1918 | ptrdiff_t s = XINT (start); |
1919 | ptrdiff_t e = XINT (end); | |
81f6e55f | 1920 | |
9dd7eec6 GM |
1921 | while (s < e) |
1922 | { | |
d311d28c | 1923 | ptrdiff_t interval_end, len; |
9dd7eec6 | 1924 | Lisp_Object plist; |
81f6e55f | 1925 | |
9dd7eec6 GM |
1926 | interval_end = i->position + LENGTH (i); |
1927 | if (interval_end > e) | |
1928 | interval_end = e; | |
1929 | len = interval_end - s; | |
81f6e55f | 1930 | |
9dd7eec6 GM |
1931 | plist = i->plist; |
1932 | ||
1933 | if (!NILP (prop)) | |
99784d63 SM |
1934 | for (; CONSP (plist); plist = Fcdr (XCDR (plist))) |
1935 | if (EQ (XCAR (plist), prop)) | |
9dd7eec6 | 1936 | { |
99784d63 | 1937 | plist = Fcons (prop, Fcons (Fcar (XCDR (plist)), Qnil)); |
9dd7eec6 GM |
1938 | break; |
1939 | } | |
1940 | ||
1941 | if (!NILP (plist)) | |
1942 | result = Fcons (Fcons (make_number (s), | |
1943 | Fcons (make_number (s + len), | |
1944 | Fcons (plist, Qnil))), | |
1945 | result); | |
81f6e55f | 1946 | |
9dd7eec6 | 1947 | i = next_interval (i); |
77c7bcb1 | 1948 | if (!i) |
9dd7eec6 GM |
1949 | break; |
1950 | s = i->position; | |
1951 | } | |
1952 | } | |
81f6e55f | 1953 | |
9dd7eec6 GM |
1954 | return result; |
1955 | } | |
1956 | ||
1957 | ||
1958 | /* Add text properties to OBJECT from LIST. LIST is a list of triples | |
1959 | (START END PLIST), where START and END are positions and PLIST is a | |
1960 | property list containing the text properties to add. Adjust START | |
ecc0fdd4 | 1961 | and END positions by DELTA before adding properties. */ |
9dd7eec6 | 1962 | |
ecc0fdd4 | 1963 | void |
971de7fb | 1964 | add_text_properties_from_list (Lisp_Object object, Lisp_Object list, Lisp_Object delta) |
9dd7eec6 GM |
1965 | { |
1966 | struct gcpro gcpro1, gcpro2; | |
81f6e55f | 1967 | |
9dd7eec6 | 1968 | GCPRO2 (list, object); |
81f6e55f | 1969 | |
9dd7eec6 GM |
1970 | for (; CONSP (list); list = XCDR (list)) |
1971 | { | |
ecc0fdd4 | 1972 | Lisp_Object item, start, end, plist; |
81f6e55f | 1973 | |
9dd7eec6 GM |
1974 | item = XCAR (list); |
1975 | start = make_number (XINT (XCAR (item)) + XINT (delta)); | |
1976 | end = make_number (XINT (XCAR (XCDR (item))) + XINT (delta)); | |
1977 | plist = XCAR (XCDR (XCDR (item))); | |
81f6e55f | 1978 | |
ecc0fdd4 | 1979 | Fadd_text_properties (start, end, plist, object); |
9dd7eec6 GM |
1980 | } |
1981 | ||
1982 | UNGCPRO; | |
9dd7eec6 GM |
1983 | } |
1984 | ||
1985 | ||
1986 | ||
e398c61c CY |
1987 | /* Modify end-points of ranges in LIST destructively, and return the |
1988 | new list. LIST is a list as returned from text_property_list. | |
1989 | Discard properties that begin at or after NEW_END, and limit | |
1990 | end-points to NEW_END. */ | |
9dd7eec6 | 1991 | |
e398c61c | 1992 | Lisp_Object |
971de7fb | 1993 | extend_property_ranges (Lisp_Object list, Lisp_Object new_end) |
9dd7eec6 | 1994 | { |
e398c61c | 1995 | Lisp_Object prev = Qnil, head = list; |
d311d28c | 1996 | ptrdiff_t max = XINT (new_end); |
e398c61c CY |
1997 | |
1998 | for (; CONSP (list); prev = list, list = XCDR (list)) | |
9dd7eec6 | 1999 | { |
e398c61c | 2000 | Lisp_Object item, beg, end; |
81f6e55f | 2001 | |
9dd7eec6 | 2002 | item = XCAR (list); |
e398c61c | 2003 | beg = XCAR (item); |
9dd7eec6 GM |
2004 | end = XCAR (XCDR (item)); |
2005 | ||
e398c61c CY |
2006 | if (XINT (beg) >= max) |
2007 | { | |
2008 | /* The start-point is past the end of the new string. | |
2009 | Discard this property. */ | |
2010 | if (EQ (head, list)) | |
2011 | head = XCDR (list); | |
2012 | else | |
2013 | XSETCDR (prev, XCDR (list)); | |
2014 | } | |
2015 | else if (XINT (end) > max) | |
2016 | /* The end-point is past the end of the new string. */ | |
f3fbd155 | 2017 | XSETCAR (XCDR (item), new_end); |
9dd7eec6 | 2018 | } |
e398c61c CY |
2019 | |
2020 | return head; | |
9dd7eec6 GM |
2021 | } |
2022 | ||
2023 | ||
318d2fa8 RS |
2024 | \f |
2025 | /* Call the modification hook functions in LIST, each with START and END. */ | |
2026 | ||
2027 | static void | |
971de7fb | 2028 | call_mod_hooks (Lisp_Object list, Lisp_Object start, Lisp_Object end) |
318d2fa8 RS |
2029 | { |
2030 | struct gcpro gcpro1; | |
2031 | GCPRO1 (list); | |
2032 | while (!NILP (list)) | |
2033 | { | |
2034 | call2 (Fcar (list), start, end); | |
2035 | list = Fcdr (list); | |
2036 | } | |
2037 | UNGCPRO; | |
2038 | } | |
2039 | ||
96f90544 RS |
2040 | /* Check for read-only intervals between character positions START ... END, |
2041 | in BUF, and signal an error if we find one. | |
2042 | ||
2043 | Then check for any modification hooks in the range. | |
2044 | Create a list of all these hooks in lexicographic order, | |
2045 | eliminating consecutive extra copies of the same hook. Then call | |
2046 | those hooks in order, with START and END - 1 as arguments. */ | |
15e4954b | 2047 | |
318d2fa8 | 2048 | void |
d1dfb56c | 2049 | verify_interval_modification (struct buffer *buf, |
d311d28c | 2050 | ptrdiff_t start, ptrdiff_t end) |
318d2fa8 | 2051 | { |
0c94c8d6 PE |
2052 | INTERVAL intervals = buffer_intervals (buf); |
2053 | INTERVAL i; | |
318d2fa8 | 2054 | Lisp_Object hooks; |
0c94c8d6 | 2055 | Lisp_Object prev_mod_hooks; |
318d2fa8 RS |
2056 | Lisp_Object mod_hooks; |
2057 | struct gcpro gcpro1; | |
2058 | ||
2059 | hooks = Qnil; | |
2060 | prev_mod_hooks = Qnil; | |
2061 | mod_hooks = Qnil; | |
2062 | ||
2063 | interval_insert_behind_hooks = Qnil; | |
2064 | interval_insert_in_front_hooks = Qnil; | |
2065 | ||
77c7bcb1 | 2066 | if (!intervals) |
318d2fa8 RS |
2067 | return; |
2068 | ||
2069 | if (start > end) | |
2070 | { | |
d311d28c | 2071 | ptrdiff_t temp = start; |
318d2fa8 RS |
2072 | start = end; |
2073 | end = temp; | |
2074 | } | |
2075 | ||
2076 | /* For an insert operation, check the two chars around the position. */ | |
2077 | if (start == end) | |
2078 | { | |
7cb66899 | 2079 | INTERVAL prev = NULL; |
318d2fa8 RS |
2080 | Lisp_Object before, after; |
2081 | ||
2082 | /* Set I to the interval containing the char after START, | |
2083 | and PREV to the interval containing the char before START. | |
2084 | Either one may be null. They may be equal. */ | |
2085 | i = find_interval (intervals, start); | |
2086 | ||
2087 | if (start == BUF_BEGV (buf)) | |
2088 | prev = 0; | |
2089 | else if (i->position == start) | |
2090 | prev = previous_interval (i); | |
2091 | else if (i->position < start) | |
2092 | prev = i; | |
2093 | if (start == BUF_ZV (buf)) | |
2094 | i = 0; | |
2095 | ||
2096 | /* If Vinhibit_read_only is set and is not a list, we can | |
2097 | skip the read_only checks. */ | |
2098 | if (NILP (Vinhibit_read_only) || CONSP (Vinhibit_read_only)) | |
2099 | { | |
2100 | /* If I and PREV differ we need to check for the read-only | |
cdf3e5a2 | 2101 | property together with its stickiness. If either I or |
318d2fa8 RS |
2102 | PREV are 0, this check is all we need. |
2103 | We have to take special care, since read-only may be | |
2104 | indirectly defined via the category property. */ | |
2105 | if (i != prev) | |
2106 | { | |
77c7bcb1 | 2107 | 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) | |
2115 | && NILP (Fmemq (after, Vinhibit_read_only))) | |
2116 | { | |
2117 | Lisp_Object tem; | |
2118 | ||
2119 | tem = textget (i->plist, Qfront_sticky); | |
2120 | if (TMEM (Qread_only, tem) | |
2121 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2122 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2123 | text_read_only (after); |
318d2fa8 RS |
2124 | } |
2125 | } | |
2126 | ||
77c7bcb1 | 2127 | if (prev) |
318d2fa8 RS |
2128 | { |
2129 | before = textget (prev->plist, Qread_only); | |
81f6e55f | 2130 | |
318d2fa8 RS |
2131 | /* If interval PREV is read-only and read-only isn't |
2132 | rear-nonsticky, inhibit insertion. | |
2133 | Check for read-only as well as category. */ | |
2134 | if (! NILP (before) | |
2135 | && NILP (Fmemq (before, Vinhibit_read_only))) | |
2136 | { | |
2137 | Lisp_Object tem; | |
2138 | ||
2139 | tem = textget (prev->plist, Qrear_nonsticky); | |
2140 | if (! TMEM (Qread_only, tem) | |
2141 | && (! NILP (Fplist_get (prev->plist,Qread_only)) | |
2142 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2143 | text_read_only (before); |
318d2fa8 RS |
2144 | } |
2145 | } | |
2146 | } | |
77c7bcb1 | 2147 | else if (i) |
318d2fa8 RS |
2148 | { |
2149 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2150 | |
318d2fa8 RS |
2151 | /* If interval I is read-only and read-only is |
2152 | front-sticky, inhibit insertion. | |
2153 | Check for read-only as well as category. */ | |
2154 | if (! NILP (after) && NILP (Fmemq (after, Vinhibit_read_only))) | |
2155 | { | |
2156 | Lisp_Object tem; | |
2157 | ||
2158 | tem = textget (i->plist, Qfront_sticky); | |
2159 | if (TMEM (Qread_only, tem) | |
2160 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2161 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2162 | text_read_only (after); |
318d2fa8 RS |
2163 | |
2164 | tem = textget (prev->plist, Qrear_nonsticky); | |
2165 | if (! TMEM (Qread_only, tem) | |
2166 | && (! NILP (Fplist_get (prev->plist, Qread_only)) | |
2167 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2168 | text_read_only (after); |
318d2fa8 RS |
2169 | } |
2170 | } | |
2171 | } | |
2172 | ||
2173 | /* Run both insert hooks (just once if they're the same). */ | |
77c7bcb1 | 2174 | if (prev) |
318d2fa8 RS |
2175 | interval_insert_behind_hooks |
2176 | = textget (prev->plist, Qinsert_behind_hooks); | |
77c7bcb1 | 2177 | if (i) |
318d2fa8 RS |
2178 | interval_insert_in_front_hooks |
2179 | = textget (i->plist, Qinsert_in_front_hooks); | |
2180 | } | |
0ba7995b | 2181 | else |
318d2fa8 RS |
2182 | { |
2183 | /* Loop over intervals on or next to START...END, | |
2184 | collecting their hooks. */ | |
2185 | ||
2186 | i = find_interval (intervals, start); | |
2187 | do | |
2188 | { | |
2189 | if (! INTERVAL_WRITABLE_P (i)) | |
bcf97349 | 2190 | text_read_only (textget (i->plist, Qread_only)); |
318d2fa8 | 2191 | |
0ba7995b | 2192 | if (!inhibit_modification_hooks) |
318d2fa8 | 2193 | { |
0ba7995b GM |
2194 | mod_hooks = textget (i->plist, Qmodification_hooks); |
2195 | if (! NILP (mod_hooks) && ! EQ (mod_hooks, prev_mod_hooks)) | |
2196 | { | |
2197 | hooks = Fcons (mod_hooks, hooks); | |
2198 | prev_mod_hooks = mod_hooks; | |
2199 | } | |
318d2fa8 RS |
2200 | } |
2201 | ||
2202 | i = next_interval (i); | |
2203 | } | |
2204 | /* Keep going thru the interval containing the char before END. */ | |
77c7bcb1 | 2205 | while (i && i->position < end); |
318d2fa8 | 2206 | |
0ba7995b | 2207 | if (!inhibit_modification_hooks) |
318d2fa8 | 2208 | { |
0ba7995b GM |
2209 | GCPRO1 (hooks); |
2210 | hooks = Fnreverse (hooks); | |
2211 | while (! EQ (hooks, Qnil)) | |
2212 | { | |
2213 | call_mod_hooks (Fcar (hooks), make_number (start), | |
2214 | make_number (end)); | |
2215 | hooks = Fcdr (hooks); | |
2216 | } | |
2217 | UNGCPRO; | |
318d2fa8 | 2218 | } |
318d2fa8 RS |
2219 | } |
2220 | } | |
2221 | ||
96f90544 | 2222 | /* Run the interval hooks for an insertion on character range START ... END. |
318d2fa8 RS |
2223 | verify_interval_modification chose which hooks to run; |
2224 | this function is called after the insertion happens | |
2225 | so it can indicate the range of inserted text. */ | |
2226 | ||
2227 | void | |
971de7fb | 2228 | report_interval_modification (Lisp_Object start, Lisp_Object end) |
318d2fa8 RS |
2229 | { |
2230 | if (! NILP (interval_insert_behind_hooks)) | |
2e34157c | 2231 | call_mod_hooks (interval_insert_behind_hooks, start, end); |
318d2fa8 RS |
2232 | if (! NILP (interval_insert_in_front_hooks) |
2233 | && ! EQ (interval_insert_in_front_hooks, | |
2234 | interval_insert_behind_hooks)) | |
2e34157c | 2235 | call_mod_hooks (interval_insert_in_front_hooks, start, end); |
318d2fa8 RS |
2236 | } |
2237 | \f | |
d418ef42 | 2238 | void |
971de7fb | 2239 | syms_of_textprop (void) |
d418ef42 | 2240 | { |
29208e82 | 2241 | DEFVAR_LISP ("default-text-properties", Vdefault_text_properties, |
8c1a1077 PJ |
2242 | doc: /* Property-list used as default values. |
2243 | The value of a property in this list is seen as the value for every | |
2244 | character that does not have its own value for that property. */); | |
ad1b2f20 | 2245 | Vdefault_text_properties = Qnil; |
c7dd82a3 | 2246 | |
29208e82 | 2247 | DEFVAR_LISP ("char-property-alias-alist", Vchar_property_alias_alist, |
49d110a8 CW |
2248 | doc: /* Alist of alternative properties for properties without a value. |
2249 | Each element should look like (PROPERTY ALTERNATIVE1 ALTERNATIVE2...). | |
2250 | If a piece of text has no direct value for a particular property, then | |
2251 | this alist is consulted. If that property appears in the alist, then | |
2252 | the first non-nil value from the associated alternative properties is | |
2253 | returned. */); | |
2254 | Vchar_property_alias_alist = Qnil; | |
2255 | ||
29208e82 | 2256 | DEFVAR_LISP ("inhibit-point-motion-hooks", Vinhibit_point_motion_hooks, |
8c1a1077 PJ |
2257 | doc: /* If non-nil, don't run `point-left' and `point-entered' text properties. |
2258 | This also inhibits the use of the `intangible' text property. */); | |
688a5a0f | 2259 | Vinhibit_point_motion_hooks = Qnil; |
318d2fa8 | 2260 | |
abc2f676 | 2261 | DEFVAR_LISP ("text-property-default-nonsticky", |
29208e82 | 2262 | Vtext_property_default_nonsticky, |
22bcf204 | 2263 | doc: /* Alist of properties vs the corresponding non-stickiness. |
8c1a1077 PJ |
2264 | Each element has the form (PROPERTY . NONSTICKINESS). |
2265 | ||
2266 | If a character in a buffer has PROPERTY, new text inserted adjacent to | |
2267 | the character doesn't inherit PROPERTY if NONSTICKINESS is non-nil, | |
518c0b83 JB |
2268 | inherits it if NONSTICKINESS is nil. The `front-sticky' and |
2269 | `rear-nonsticky' properties of the character override NONSTICKINESS. */); | |
cabf1cac SM |
2270 | /* Text properties `syntax-table'and `display' should be nonsticky |
2271 | by default. */ | |
98ebf860 | 2272 | Vtext_property_default_nonsticky |
cabf1cac SM |
2273 | = Fcons (Fcons (intern_c_string ("syntax-table"), Qt), |
2274 | Fcons (Fcons (intern_c_string ("display"), Qt), Qnil)); | |
abc2f676 | 2275 | |
318d2fa8 RS |
2276 | staticpro (&interval_insert_behind_hooks); |
2277 | staticpro (&interval_insert_in_front_hooks); | |
2278 | interval_insert_behind_hooks = Qnil; | |
2279 | interval_insert_in_front_hooks = Qnil; | |
2280 | ||
81f6e55f | 2281 | |
d418ef42 JA |
2282 | /* Common attributes one might give text */ |
2283 | ||
cd3520a4 JB |
2284 | DEFSYM (Qforeground, "foreground"); |
2285 | DEFSYM (Qbackground, "background"); | |
2286 | DEFSYM (Qfont, "font"); | |
2287 | DEFSYM (Qstipple, "stipple"); | |
2288 | DEFSYM (Qunderline, "underline"); | |
2289 | DEFSYM (Qread_only, "read-only"); | |
2290 | DEFSYM (Qinvisible, "invisible"); | |
2291 | DEFSYM (Qintangible, "intangible"); | |
2292 | DEFSYM (Qcategory, "category"); | |
2293 | DEFSYM (Qlocal_map, "local-map"); | |
2294 | DEFSYM (Qfront_sticky, "front-sticky"); | |
2295 | DEFSYM (Qrear_nonsticky, "rear-nonsticky"); | |
2296 | DEFSYM (Qmouse_face, "mouse-face"); | |
2297 | DEFSYM (Qminibuffer_prompt, "minibuffer-prompt"); | |
d418ef42 JA |
2298 | |
2299 | /* Properties that text might use to specify certain actions */ | |
2300 | ||
cd3520a4 JB |
2301 | DEFSYM (Qmouse_left, "mouse-left"); |
2302 | DEFSYM (Qmouse_entered, "mouse-entered"); | |
2303 | DEFSYM (Qpoint_left, "point-left"); | |
2304 | DEFSYM (Qpoint_entered, "point-entered"); | |
d418ef42 JA |
2305 | |
2306 | defsubr (&Stext_properties_at); | |
5fbe2a44 | 2307 | defsubr (&Sget_text_property); |
eb769fd7 | 2308 | defsubr (&Sget_char_property); |
97a1bc63 | 2309 | defsubr (&Sget_char_property_and_overlay); |
fcab51aa RS |
2310 | defsubr (&Snext_char_property_change); |
2311 | defsubr (&Sprevious_char_property_change); | |
b7e047fb MB |
2312 | defsubr (&Snext_single_char_property_change); |
2313 | defsubr (&Sprevious_single_char_property_change); | |
d418ef42 | 2314 | defsubr (&Snext_property_change); |
9c79dd1b | 2315 | defsubr (&Snext_single_property_change); |
d418ef42 | 2316 | defsubr (&Sprevious_property_change); |
9c79dd1b | 2317 | defsubr (&Sprevious_single_property_change); |
d418ef42 | 2318 | defsubr (&Sadd_text_properties); |
d4b530ad | 2319 | defsubr (&Sput_text_property); |
d418ef42 JA |
2320 | defsubr (&Sset_text_properties); |
2321 | defsubr (&Sremove_text_properties); | |
11713b6d | 2322 | defsubr (&Sremove_list_of_text_properties); |
ad9c1940 JB |
2323 | defsubr (&Stext_property_any); |
2324 | defsubr (&Stext_property_not_all); | |
d418ef42 | 2325 | } |