Commit | Line | Data |
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d418ef42 | 1 | /* Interface code for dealing with text properties. |
acaf905b | 2 | Copyright (C) 1993-1995, 1997, 1999-2012 Free Software Foundation, Inc. |
d418ef42 JA |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
d418ef42 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
d418ef42 JA |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d418ef42 | 18 | |
18160b98 | 19 | #include <config.h> |
d7306fe6 | 20 | #include <setjmp.h> |
d418ef42 JA |
21 | #include "lisp.h" |
22 | #include "intervals.h" | |
23 | #include "buffer.h" | |
f5957179 | 24 | #include "window.h" |
59a486ab | 25 | |
318d2fa8 RS |
26 | /* Test for membership, allowing for t (actually any non-cons) to mean the |
27 | universal set. */ | |
28 | ||
29 | #define TMEM(sym, set) (CONSP (set) ? ! NILP (Fmemq (sym, set)) : ! NILP (set)) | |
d418ef42 JA |
30 | \f |
31 | ||
32 | /* NOTES: previous- and next- property change will have to skip | |
33 | zero-length intervals if they are implemented. This could be done | |
34 | inside next_interval and previous_interval. | |
35 | ||
9c79dd1b JA |
36 | set_properties needs to deal with the interval property cache. |
37 | ||
d418ef42 | 38 | It is assumed that for any interval plist, a property appears |
d4b530ad | 39 | only once on the list. Although some code i.e., remove_properties, |
d418ef42 | 40 | handles the more general case, the uniqueness of properties is |
eb8c3be9 | 41 | necessary for the system to remain consistent. This requirement |
cdf3e5a2 | 42 | is enforced by the subrs installing properties onto the intervals. */ |
d418ef42 JA |
43 | |
44 | \f | |
cdf3e5a2 | 45 | /* Types of hooks. */ |
955cbe7b PE |
46 | static Lisp_Object Qmouse_left; |
47 | static Lisp_Object Qmouse_entered; | |
d418ef42 JA |
48 | Lisp_Object Qpoint_left; |
49 | Lisp_Object Qpoint_entered; | |
dc70cea7 RS |
50 | Lisp_Object Qcategory; |
51 | Lisp_Object Qlocal_map; | |
d418ef42 | 52 | |
cdf3e5a2 | 53 | /* Visual properties text (including strings) may have. */ |
955cbe7b PE |
54 | static Lisp_Object Qforeground, Qbackground, Qunderline; |
55 | Lisp_Object Qfont; | |
56 | static Lisp_Object Qstipple; | |
57 | Lisp_Object Qinvisible, Qintangible, Qmouse_face; | |
58 | static Lisp_Object Qread_only; | |
54b33868 | 59 | Lisp_Object Qminibuffer_prompt; |
19e1c426 RS |
60 | |
61 | /* Sticky properties */ | |
62 | Lisp_Object Qfront_sticky, Qrear_nonsticky; | |
d7b4e137 JB |
63 | |
64 | /* If o1 is a cons whose cdr is a cons, return non-zero and set o2 to | |
65 | the o1's cdr. Otherwise, return zero. This is handy for | |
66 | traversing plists. */ | |
70949dac | 67 | #define PLIST_ELT_P(o1, o2) (CONSP (o1) && ((o2)=XCDR (o1), CONSP (o2))) |
d7b4e137 | 68 | |
318d2fa8 RS |
69 | /* verify_interval_modification saves insertion hooks here |
70 | to be run later by report_interval_modification. */ | |
50436f33 PE |
71 | static Lisp_Object interval_insert_behind_hooks; |
72 | static Lisp_Object interval_insert_in_front_hooks; | |
7cb66899 | 73 | |
f57e2426 | 74 | static void text_read_only (Lisp_Object) NO_RETURN; |
cd64ea1d PE |
75 | static Lisp_Object Fprevious_property_change (Lisp_Object, Lisp_Object, |
76 | Lisp_Object); | |
2381d38d | 77 | |
7cb66899 GM |
78 | |
79 | /* Signal a `text-read-only' error. This function makes it easier | |
80 | to capture that error in GDB by putting a breakpoint on it. */ | |
81 | ||
82 | static void | |
971de7fb | 83 | text_read_only (Lisp_Object propval) |
7cb66899 | 84 | { |
d0a29e1d KS |
85 | if (STRINGP (propval)) |
86 | xsignal1 (Qtext_read_only, propval); | |
87 | ||
88 | xsignal0 (Qtext_read_only); | |
7cb66899 GM |
89 | } |
90 | ||
91 | ||
d418ef42 | 92 | \f |
ac876a79 JA |
93 | /* Extract the interval at the position pointed to by BEGIN from |
94 | OBJECT, a string or buffer. Additionally, check that the positions | |
95 | pointed to by BEGIN and END are within the bounds of OBJECT, and | |
96 | reverse them if *BEGIN is greater than *END. The objects pointed | |
97 | to by BEGIN and END may be integers or markers; if the latter, they | |
98 | are coerced to integers. | |
d418ef42 | 99 | |
d4b530ad RS |
100 | When OBJECT is a string, we increment *BEGIN and *END |
101 | to make them origin-one. | |
102 | ||
d418ef42 JA |
103 | Note that buffer points don't correspond to interval indices. |
104 | For example, point-max is 1 greater than the index of the last | |
105 | character. This difference is handled in the caller, which uses | |
106 | the validated points to determine a length, and operates on that. | |
107 | Exceptions are Ftext_properties_at, Fnext_property_change, and | |
108 | Fprevious_property_change which call this function with BEGIN == END. | |
109 | Handle this case specially. | |
110 | ||
111 | If FORCE is soft (0), it's OK to return NULL_INTERVAL. Otherwise, | |
ac876a79 JA |
112 | create an interval tree for OBJECT if one doesn't exist, provided |
113 | the object actually contains text. In the current design, if there | |
d4b530ad | 114 | is no text, there can be no text properties. */ |
d418ef42 JA |
115 | |
116 | #define soft 0 | |
117 | #define hard 1 | |
118 | ||
9dd7eec6 | 119 | INTERVAL |
971de7fb | 120 | validate_interval_range (Lisp_Object object, Lisp_Object *begin, Lisp_Object *end, int force) |
d418ef42 JA |
121 | { |
122 | register INTERVAL i; | |
2452438f | 123 | EMACS_INT searchpos; |
d4b530ad | 124 | |
b7826503 PJ |
125 | CHECK_STRING_OR_BUFFER (object); |
126 | CHECK_NUMBER_COERCE_MARKER (*begin); | |
127 | CHECK_NUMBER_COERCE_MARKER (*end); | |
d418ef42 JA |
128 | |
129 | /* If we are asked for a point, but from a subr which operates | |
cdf3e5a2 | 130 | on a range, then return nothing. */ |
64a49ca7 | 131 | if (EQ (*begin, *end) && begin != end) |
d418ef42 JA |
132 | return NULL_INTERVAL; |
133 | ||
134 | if (XINT (*begin) > XINT (*end)) | |
135 | { | |
d4b530ad RS |
136 | Lisp_Object n; |
137 | n = *begin; | |
d418ef42 | 138 | *begin = *end; |
d4b530ad | 139 | *end = n; |
d418ef42 JA |
140 | } |
141 | ||
5d2fa46f | 142 | if (BUFFERP (object)) |
d418ef42 JA |
143 | { |
144 | register struct buffer *b = XBUFFER (object); | |
145 | ||
d418ef42 JA |
146 | if (!(BUF_BEGV (b) <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
147 | && XINT (*end) <= BUF_ZV (b))) | |
148 | args_out_of_range (*begin, *end); | |
866bf246 | 149 | i = BUF_INTERVALS (b); |
d418ef42 | 150 | |
cdf3e5a2 | 151 | /* If there's no text, there are no properties. */ |
d4b530ad RS |
152 | if (BUF_BEGV (b) == BUF_ZV (b)) |
153 | return NULL_INTERVAL; | |
154 | ||
155 | searchpos = XINT (*begin); | |
d418ef42 JA |
156 | } |
157 | else | |
158 | { | |
2452438f | 159 | EMACS_INT len = SCHARS (object); |
d418ef42 | 160 | |
d4b530ad | 161 | if (! (0 <= XINT (*begin) && XINT (*begin) <= XINT (*end) |
943afcc7 | 162 | && XINT (*end) <= len)) |
d418ef42 | 163 | args_out_of_range (*begin, *end); |
ad077db0 | 164 | XSETFASTINT (*begin, XFASTINT (*begin)); |
b1e94638 | 165 | if (begin != end) |
ad077db0 | 166 | XSETFASTINT (*end, XFASTINT (*end)); |
943afcc7 | 167 | i = STRING_INTERVALS (object); |
d4b530ad | 168 | |
943afcc7 | 169 | if (len == 0) |
d4b530ad RS |
170 | return NULL_INTERVAL; |
171 | ||
172 | searchpos = XINT (*begin); | |
d418ef42 JA |
173 | } |
174 | ||
175 | if (NULL_INTERVAL_P (i)) | |
176 | return (force ? create_root_interval (object) : i); | |
81f6e55f | 177 | |
d4b530ad | 178 | return find_interval (i, searchpos); |
d418ef42 JA |
179 | } |
180 | ||
181 | /* Validate LIST as a property list. If LIST is not a list, then | |
182 | make one consisting of (LIST nil). Otherwise, verify that LIST | |
cdf3e5a2 | 183 | is even numbered and thus suitable as a plist. */ |
d418ef42 JA |
184 | |
185 | static Lisp_Object | |
971de7fb | 186 | validate_plist (Lisp_Object list) |
d418ef42 JA |
187 | { |
188 | if (NILP (list)) | |
189 | return Qnil; | |
190 | ||
191 | if (CONSP (list)) | |
192 | { | |
193 | register int i; | |
194 | register Lisp_Object tail; | |
99784d63 | 195 | for (i = 0, tail = list; CONSP (tail); i++) |
b1e94638 | 196 | { |
99784d63 | 197 | tail = XCDR (tail); |
b1e94638 JB |
198 | QUIT; |
199 | } | |
d418ef42 JA |
200 | if (i & 1) |
201 | error ("Odd length text property list"); | |
202 | return list; | |
203 | } | |
204 | ||
205 | return Fcons (list, Fcons (Qnil, Qnil)); | |
206 | } | |
207 | ||
d418ef42 | 208 | /* Return nonzero if interval I has all the properties, |
cdf3e5a2 | 209 | with the same values, of list PLIST. */ |
d418ef42 JA |
210 | |
211 | static int | |
971de7fb | 212 | interval_has_all_properties (Lisp_Object plist, INTERVAL i) |
d418ef42 | 213 | { |
695f302f | 214 | register Lisp_Object tail1, tail2, sym1; |
d418ef42 JA |
215 | register int found; |
216 | ||
cdf3e5a2 | 217 | /* Go through each element of PLIST. */ |
99784d63 | 218 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 219 | { |
99784d63 | 220 | sym1 = XCAR (tail1); |
d418ef42 JA |
221 | found = 0; |
222 | ||
223 | /* Go through I's plist, looking for sym1 */ | |
99784d63 SM |
224 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
225 | if (EQ (sym1, XCAR (tail2))) | |
d418ef42 JA |
226 | { |
227 | /* Found the same property on both lists. If the | |
cdf3e5a2 | 228 | values are unequal, return zero. */ |
99784d63 | 229 | if (! EQ (Fcar (XCDR (tail1)), Fcar (XCDR (tail2)))) |
d418ef42 JA |
230 | return 0; |
231 | ||
224a3131 | 232 | /* Property has same value on both lists; go to next one. */ |
d418ef42 JA |
233 | found = 1; |
234 | break; | |
235 | } | |
236 | ||
237 | if (! found) | |
238 | return 0; | |
239 | } | |
240 | ||
241 | return 1; | |
242 | } | |
243 | ||
244 | /* Return nonzero if the plist of interval I has any of the | |
cdf3e5a2 | 245 | properties of PLIST, regardless of their values. */ |
d418ef42 | 246 | |
55d4c1b2 | 247 | static inline int |
971de7fb | 248 | interval_has_some_properties (Lisp_Object plist, INTERVAL i) |
d418ef42 JA |
249 | { |
250 | register Lisp_Object tail1, tail2, sym; | |
251 | ||
cdf3e5a2 | 252 | /* Go through each element of PLIST. */ |
99784d63 | 253 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 254 | { |
99784d63 | 255 | sym = XCAR (tail1); |
d418ef42 JA |
256 | |
257 | /* Go through i's plist, looking for tail1 */ | |
99784d63 SM |
258 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
259 | if (EQ (sym, XCAR (tail2))) | |
d418ef42 JA |
260 | return 1; |
261 | } | |
262 | ||
263 | return 0; | |
264 | } | |
11713b6d RS |
265 | |
266 | /* Return nonzero if the plist of interval I has any of the | |
267 | property names in LIST, regardless of their values. */ | |
268 | ||
55d4c1b2 | 269 | static inline int |
971de7fb | 270 | interval_has_some_properties_list (Lisp_Object list, INTERVAL i) |
11713b6d RS |
271 | { |
272 | register Lisp_Object tail1, tail2, sym; | |
273 | ||
274 | /* Go through each element of LIST. */ | |
99784d63 | 275 | for (tail1 = list; CONSP (tail1); tail1 = XCDR (tail1)) |
11713b6d RS |
276 | { |
277 | sym = Fcar (tail1); | |
278 | ||
279 | /* Go through i's plist, looking for tail1 */ | |
99784d63 | 280 | for (tail2 = i->plist; CONSP (tail2); tail2 = XCDR (XCDR (tail2))) |
11713b6d RS |
281 | if (EQ (sym, XCAR (tail2))) |
282 | return 1; | |
283 | } | |
284 | ||
285 | return 0; | |
286 | } | |
d4b530ad | 287 | \f |
d7b4e137 JB |
288 | /* Changing the plists of individual intervals. */ |
289 | ||
290 | /* Return the value of PROP in property-list PLIST, or Qunbound if it | |
291 | has none. */ | |
64a49ca7 | 292 | static Lisp_Object |
971de7fb | 293 | property_value (Lisp_Object plist, Lisp_Object prop) |
d7b4e137 JB |
294 | { |
295 | Lisp_Object value; | |
296 | ||
297 | while (PLIST_ELT_P (plist, value)) | |
70949dac KR |
298 | if (EQ (XCAR (plist), prop)) |
299 | return XCAR (value); | |
d7b4e137 | 300 | else |
70949dac | 301 | plist = XCDR (value); |
d7b4e137 JB |
302 | |
303 | return Qunbound; | |
304 | } | |
305 | ||
d4b530ad RS |
306 | /* Set the properties of INTERVAL to PROPERTIES, |
307 | and record undo info for the previous values. | |
308 | OBJECT is the string or buffer that INTERVAL belongs to. */ | |
309 | ||
310 | static void | |
971de7fb | 311 | set_properties (Lisp_Object properties, INTERVAL interval, Lisp_Object object) |
d4b530ad | 312 | { |
d7b4e137 | 313 | Lisp_Object sym, value; |
d4b530ad | 314 | |
d7b4e137 | 315 | if (BUFFERP (object)) |
d4b530ad | 316 | { |
d7b4e137 JB |
317 | /* For each property in the old plist which is missing from PROPERTIES, |
318 | or has a different value in PROPERTIES, make an undo record. */ | |
319 | for (sym = interval->plist; | |
320 | PLIST_ELT_P (sym, value); | |
70949dac KR |
321 | sym = XCDR (value)) |
322 | if (! EQ (property_value (properties, XCAR (sym)), | |
323 | XCAR (value))) | |
f7a9275a | 324 | { |
f7a9275a | 325 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 326 | XCAR (sym), XCAR (value), |
f7a9275a RS |
327 | object); |
328 | } | |
d7b4e137 JB |
329 | |
330 | /* For each new property that has no value at all in the old plist, | |
331 | make an undo record binding it to nil, so it will be removed. */ | |
332 | for (sym = properties; | |
333 | PLIST_ELT_P (sym, value); | |
70949dac KR |
334 | sym = XCDR (value)) |
335 | if (EQ (property_value (interval->plist, XCAR (sym)), Qunbound)) | |
f7a9275a | 336 | { |
f7a9275a | 337 | record_property_change (interval->position, LENGTH (interval), |
70949dac | 338 | XCAR (sym), Qnil, |
f7a9275a RS |
339 | object); |
340 | } | |
d4b530ad RS |
341 | } |
342 | ||
343 | /* Store new properties. */ | |
344 | interval->plist = Fcopy_sequence (properties); | |
345 | } | |
d418ef42 JA |
346 | |
347 | /* Add the properties of PLIST to the interval I, or set | |
348 | the value of I's property to the value of the property on PLIST | |
349 | if they are different. | |
350 | ||
d4b530ad RS |
351 | OBJECT should be the string or buffer the interval is in. |
352 | ||
d418ef42 JA |
353 | Return nonzero if this changes I (i.e., if any members of PLIST |
354 | are actually added to I's plist) */ | |
355 | ||
d4b530ad | 356 | static int |
971de7fb | 357 | add_properties (Lisp_Object plist, INTERVAL i, Lisp_Object object) |
d418ef42 | 358 | { |
c98da214 | 359 | Lisp_Object tail1, tail2, sym1, val1; |
d418ef42 JA |
360 | register int changed = 0; |
361 | register int found; | |
c98da214 RS |
362 | struct gcpro gcpro1, gcpro2, gcpro3; |
363 | ||
364 | tail1 = plist; | |
365 | sym1 = Qnil; | |
366 | val1 = Qnil; | |
367 | /* No need to protect OBJECT, because we can GC only in the case | |
368 | where it is a buffer, and live buffers are always protected. | |
369 | I and its plist are also protected, via OBJECT. */ | |
370 | GCPRO3 (tail1, sym1, val1); | |
d418ef42 | 371 | |
cdf3e5a2 | 372 | /* Go through each element of PLIST. */ |
99784d63 | 373 | for (tail1 = plist; CONSP (tail1); tail1 = Fcdr (XCDR (tail1))) |
d418ef42 | 374 | { |
99784d63 SM |
375 | sym1 = XCAR (tail1); |
376 | val1 = Fcar (XCDR (tail1)); | |
d418ef42 JA |
377 | found = 0; |
378 | ||
379 | /* Go through I's plist, looking for sym1 */ | |
99784d63 SM |
380 | for (tail2 = i->plist; CONSP (tail2); tail2 = Fcdr (XCDR (tail2))) |
381 | if (EQ (sym1, XCAR (tail2))) | |
d418ef42 | 382 | { |
c98da214 RS |
383 | /* No need to gcpro, because tail2 protects this |
384 | and it must be a cons cell (we get an error otherwise). */ | |
3814ccf5 | 385 | register Lisp_Object this_cdr; |
d418ef42 | 386 | |
99784d63 | 387 | this_cdr = XCDR (tail2); |
cdf3e5a2 | 388 | /* Found the property. Now check its value. */ |
d418ef42 JA |
389 | found = 1; |
390 | ||
391 | /* The properties have the same value on both lists. | |
cdf3e5a2 | 392 | Continue to the next property. */ |
734c51b2 | 393 | if (EQ (val1, Fcar (this_cdr))) |
d418ef42 JA |
394 | break; |
395 | ||
d4b530ad | 396 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 397 | if (BUFFERP (object)) |
d4b530ad | 398 | { |
f7a9275a RS |
399 | record_property_change (i->position, LENGTH (i), |
400 | sym1, Fcar (this_cdr), object); | |
d4b530ad RS |
401 | } |
402 | ||
d418ef42 JA |
403 | /* I's property has a different value -- change it */ |
404 | Fsetcar (this_cdr, val1); | |
405 | changed++; | |
406 | break; | |
407 | } | |
408 | ||
409 | if (! found) | |
410 | { | |
d4b530ad | 411 | /* Record this change in the buffer, for undo purposes. */ |
5d2fa46f | 412 | if (BUFFERP (object)) |
d4b530ad | 413 | { |
f7a9275a RS |
414 | record_property_change (i->position, LENGTH (i), |
415 | sym1, Qnil, object); | |
d4b530ad | 416 | } |
d418ef42 JA |
417 | i->plist = Fcons (sym1, Fcons (val1, i->plist)); |
418 | changed++; | |
419 | } | |
420 | } | |
421 | ||
c98da214 RS |
422 | UNGCPRO; |
423 | ||
d418ef42 JA |
424 | return changed; |
425 | } | |
426 | ||
11713b6d RS |
427 | /* For any members of PLIST, or LIST, |
428 | which are properties of I, remove them from I's plist. | |
429 | (If PLIST is non-nil, use that, otherwise use LIST.) | |
d4b530ad | 430 | OBJECT is the string or buffer containing I. */ |
d418ef42 | 431 | |
d4b530ad | 432 | static int |
971de7fb | 433 | remove_properties (Lisp_Object plist, Lisp_Object list, INTERVAL i, Lisp_Object object) |
d418ef42 | 434 | { |
3814ccf5 | 435 | register Lisp_Object tail1, tail2, sym, current_plist; |
d418ef42 JA |
436 | register int changed = 0; |
437 | ||
f25d60d6 KS |
438 | /* Nonzero means tail1 is a plist, otherwise it is a list. */ |
439 | int use_plist; | |
11713b6d | 440 | |
3814ccf5 | 441 | current_plist = i->plist; |
11713b6d RS |
442 | |
443 | if (! NILP (plist)) | |
f25d60d6 | 444 | tail1 = plist, use_plist = 1; |
11713b6d | 445 | else |
f25d60d6 | 446 | tail1 = list, use_plist = 0; |
11713b6d RS |
447 | |
448 | /* Go through each element of LIST or PLIST. */ | |
b079118d | 449 | while (CONSP (tail1)) |
d418ef42 | 450 | { |
11713b6d | 451 | sym = XCAR (tail1); |
d418ef42 | 452 | |
11713b6d | 453 | /* First, remove the symbol if it's at the head of the list */ |
b079118d | 454 | while (CONSP (current_plist) && EQ (sym, XCAR (current_plist))) |
d418ef42 | 455 | { |
5d2fa46f | 456 | if (BUFFERP (object)) |
11713b6d RS |
457 | record_property_change (i->position, LENGTH (i), |
458 | sym, XCAR (XCDR (current_plist)), | |
459 | object); | |
d4b530ad | 460 | |
11713b6d | 461 | current_plist = XCDR (XCDR (current_plist)); |
d418ef42 JA |
462 | changed++; |
463 | } | |
464 | ||
11713b6d | 465 | /* Go through I's plist, looking for SYM. */ |
d418ef42 JA |
466 | tail2 = current_plist; |
467 | while (! NILP (tail2)) | |
468 | { | |
3814ccf5 | 469 | register Lisp_Object this; |
11713b6d | 470 | this = XCDR (XCDR (tail2)); |
b079118d | 471 | if (CONSP (this) && EQ (sym, XCAR (this))) |
d418ef42 | 472 | { |
5d2fa46f | 473 | if (BUFFERP (object)) |
11713b6d RS |
474 | record_property_change (i->position, LENGTH (i), |
475 | sym, XCAR (XCDR (this)), object); | |
d4b530ad | 476 | |
11713b6d | 477 | Fsetcdr (XCDR (tail2), XCDR (XCDR (this))); |
d418ef42 JA |
478 | changed++; |
479 | } | |
480 | tail2 = this; | |
481 | } | |
11713b6d RS |
482 | |
483 | /* Advance thru TAIL1 one way or the other. */ | |
f25d60d6 KS |
484 | tail1 = XCDR (tail1); |
485 | if (use_plist && CONSP (tail1)) | |
11713b6d | 486 | tail1 = XCDR (tail1); |
d418ef42 JA |
487 | } |
488 | ||
489 | if (changed) | |
490 | i->plist = current_plist; | |
491 | return changed; | |
492 | } | |
493 | ||
d4b530ad | 494 | #if 0 |
d418ef42 | 495 | /* Remove all properties from interval I. Return non-zero |
cdf3e5a2 | 496 | if this changes the interval. */ |
d418ef42 | 497 | |
55d4c1b2 | 498 | static inline int |
59fc5cf9 | 499 | erase_properties (INTERVAL i) |
d418ef42 JA |
500 | { |
501 | if (NILP (i->plist)) | |
502 | return 0; | |
503 | ||
504 | i->plist = Qnil; | |
505 | return 1; | |
506 | } | |
d4b530ad | 507 | #endif |
d418ef42 | 508 | \f |
81f6e55f | 509 | /* Returns the interval of POSITION in OBJECT. |
cdf3e5a2 RS |
510 | POSITION is BEG-based. */ |
511 | ||
512 | INTERVAL | |
d1dfb56c | 513 | interval_of (EMACS_INT position, Lisp_Object object) |
cdf3e5a2 RS |
514 | { |
515 | register INTERVAL i; | |
2452438f | 516 | EMACS_INT beg, end; |
cdf3e5a2 RS |
517 | |
518 | if (NILP (object)) | |
519 | XSETBUFFER (object, current_buffer); | |
d0cb872a KH |
520 | else if (EQ (object, Qt)) |
521 | return NULL_INTERVAL; | |
cdf3e5a2 | 522 | |
b7826503 | 523 | CHECK_STRING_OR_BUFFER (object); |
cdf3e5a2 RS |
524 | |
525 | if (BUFFERP (object)) | |
526 | { | |
527 | register struct buffer *b = XBUFFER (object); | |
528 | ||
529 | beg = BUF_BEGV (b); | |
530 | end = BUF_ZV (b); | |
531 | i = BUF_INTERVALS (b); | |
532 | } | |
533 | else | |
534 | { | |
ad077db0 | 535 | beg = 0; |
943afcc7 KR |
536 | end = SCHARS (object); |
537 | i = STRING_INTERVALS (object); | |
cdf3e5a2 RS |
538 | } |
539 | ||
540 | if (!(beg <= position && position <= end)) | |
c7ef8e24 | 541 | args_out_of_range (make_number (position), make_number (position)); |
cdf3e5a2 RS |
542 | if (beg == end || NULL_INTERVAL_P (i)) |
543 | return NULL_INTERVAL; | |
81f6e55f | 544 | |
cdf3e5a2 RS |
545 | return find_interval (i, position); |
546 | } | |
547 | \f | |
a7ca3326 | 548 | DEFUN ("text-properties-at", Ftext_properties_at, |
d418ef42 | 549 | Stext_properties_at, 1, 2, 0, |
8c1a1077 | 550 | doc: /* Return the list of properties of the character at POSITION in OBJECT. |
81f6e55f FP |
551 | If the optional second argument OBJECT is a buffer (or nil, which means |
552 | the current buffer), POSITION is a buffer position (integer or marker). | |
553 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 | 554 | If POSITION is at the end of OBJECT, the value is nil. */) |
5842a27b | 555 | (Lisp_Object position, Lisp_Object object) |
d418ef42 JA |
556 | { |
557 | register INTERVAL i; | |
d418ef42 JA |
558 | |
559 | if (NILP (object)) | |
c8a4fc3d | 560 | XSETBUFFER (object, current_buffer); |
d418ef42 | 561 | |
1f5e848a | 562 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 JA |
563 | if (NULL_INTERVAL_P (i)) |
564 | return Qnil; | |
1f5e848a | 565 | /* If POSITION is at the end of the interval, |
d4b530ad RS |
566 | it means it's the end of OBJECT. |
567 | There are no properties at the very end, | |
568 | since no character follows. */ | |
1f5e848a | 569 | if (XINT (position) == LENGTH (i) + i->position) |
d4b530ad | 570 | return Qnil; |
d418ef42 JA |
571 | |
572 | return i->plist; | |
573 | } | |
574 | ||
a7ca3326 | 575 | DEFUN ("get-text-property", Fget_text_property, Sget_text_property, 2, 3, 0, |
8c1a1077 PJ |
576 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
577 | OBJECT is optional and defaults to the current buffer. | |
578 | If POSITION is at the end of OBJECT, the value is nil. */) | |
5842a27b | 579 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
5fbe2a44 | 580 | { |
1f5e848a | 581 | return textget (Ftext_properties_at (position, object), prop); |
5fbe2a44 RS |
582 | } |
583 | ||
bcf97349 | 584 | /* Return the value of char's property PROP, in OBJECT at POSITION. |
8d41abc4 MB |
585 | OBJECT is optional and defaults to the current buffer. |
586 | If OVERLAY is non-0, then in the case that the returned property is from | |
587 | an overlay, the overlay found is returned in *OVERLAY, otherwise nil is | |
588 | returned in *OVERLAY. | |
589 | If POSITION is at the end of OBJECT, the value is nil. | |
590 | If OBJECT is a buffer, then overlay properties are considered as well as | |
591 | text properties. | |
592 | If OBJECT is a window, then that window's buffer is used, but | |
593 | window-specific overlays are considered only if they are associated | |
594 | with OBJECT. */ | |
595 | Lisp_Object | |
971de7fb | 596 | get_char_property_and_overlay (Lisp_Object position, register Lisp_Object prop, Lisp_Object object, Lisp_Object *overlay) |
f5957179 KH |
597 | { |
598 | struct window *w = 0; | |
599 | ||
b7826503 | 600 | CHECK_NUMBER_COERCE_MARKER (position); |
f5957179 KH |
601 | |
602 | if (NILP (object)) | |
c8a4fc3d | 603 | XSETBUFFER (object, current_buffer); |
f5957179 KH |
604 | |
605 | if (WINDOWP (object)) | |
606 | { | |
607 | w = XWINDOW (object); | |
64a49ca7 | 608 | object = w->buffer; |
f5957179 KH |
609 | } |
610 | if (BUFFERP (object)) | |
611 | { | |
b081724f | 612 | ptrdiff_t noverlays; |
b5be4dbe | 613 | Lisp_Object *overlay_vec; |
cbc55f55 RS |
614 | struct buffer *obuf = current_buffer; |
615 | ||
dd6f2802 RS |
616 | if (XINT (position) < BUF_BEGV (XBUFFER (object)) |
617 | || XINT (position) > BUF_ZV (XBUFFER (object))) | |
618 | xsignal1 (Qargs_out_of_range, position); | |
619 | ||
cbc55f55 | 620 | set_buffer_temp (XBUFFER (object)); |
f5957179 | 621 | |
b5be4dbe | 622 | GET_OVERLAYS_AT (XINT (position), overlay_vec, noverlays, NULL, 0); |
f5957179 KH |
623 | noverlays = sort_overlays (overlay_vec, noverlays, w); |
624 | ||
cbc55f55 RS |
625 | set_buffer_temp (obuf); |
626 | ||
f5957179 KH |
627 | /* Now check the overlays in order of decreasing priority. */ |
628 | while (--noverlays >= 0) | |
629 | { | |
b5be4dbe | 630 | Lisp_Object tem = Foverlay_get (overlay_vec[noverlays], prop); |
f5957179 | 631 | if (!NILP (tem)) |
8d41abc4 MB |
632 | { |
633 | if (overlay) | |
634 | /* Return the overlay we got the property from. */ | |
635 | *overlay = overlay_vec[noverlays]; | |
636 | return tem; | |
637 | } | |
f5957179 KH |
638 | } |
639 | } | |
8d41abc4 MB |
640 | |
641 | if (overlay) | |
642 | /* Indicate that the return value is not from an overlay. */ | |
643 | *overlay = Qnil; | |
644 | ||
f5957179 KH |
645 | /* Not a buffer, or no appropriate overlay, so fall through to the |
646 | simpler case. */ | |
8d41abc4 MB |
647 | return Fget_text_property (position, prop, object); |
648 | } | |
649 | ||
a7ca3326 | 650 | DEFUN ("get-char-property", Fget_char_property, Sget_char_property, 2, 3, 0, |
8c1a1077 | 651 | doc: /* Return the value of POSITION's property PROP, in OBJECT. |
8faef085 | 652 | Both overlay properties and text properties are checked. |
8c1a1077 PJ |
653 | OBJECT is optional and defaults to the current buffer. |
654 | If POSITION is at the end of OBJECT, the value is nil. | |
655 | If OBJECT is a buffer, then overlay properties are considered as well as | |
656 | text properties. | |
657 | If OBJECT is a window, then that window's buffer is used, but window-specific | |
658 | overlays are considered only if they are associated with OBJECT. */) | |
5842a27b | 659 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
8d41abc4 MB |
660 | { |
661 | return get_char_property_and_overlay (position, prop, object, 0); | |
f5957179 | 662 | } |
97a1bc63 LT |
663 | |
664 | DEFUN ("get-char-property-and-overlay", Fget_char_property_and_overlay, | |
665 | Sget_char_property_and_overlay, 2, 3, 0, | |
666 | doc: /* Like `get-char-property', but with extra overlay information. | |
95555145 RS |
667 | The value is a cons cell. Its car is the return value of `get-char-property' |
668 | with the same arguments--that is, the value of POSITION's property | |
669 | PROP in OBJECT. Its cdr is the overlay in which the property was | |
97a1bc63 | 670 | found, or nil, if it was found as a text property or not found at all. |
95555145 | 671 | |
97a1bc63 LT |
672 | OBJECT is optional and defaults to the current buffer. OBJECT may be |
673 | a string, a buffer or a window. For strings, the cdr of the return | |
674 | value is always nil, since strings do not have overlays. If OBJECT is | |
675 | a window, then that window's buffer is used, but window-specific | |
676 | overlays are considered only if they are associated with OBJECT. If | |
677 | POSITION is at the end of OBJECT, both car and cdr are nil. */) | |
5842a27b | 678 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object) |
97a1bc63 LT |
679 | { |
680 | Lisp_Object overlay; | |
681 | Lisp_Object val | |
682 | = get_char_property_and_overlay (position, prop, object, &overlay); | |
6519d955 | 683 | return Fcons (val, overlay); |
97a1bc63 LT |
684 | } |
685 | ||
fcab51aa | 686 | \f |
a7ca3326 | 687 | DEFUN ("next-char-property-change", Fnext_char_property_change, |
fcab51aa | 688 | Snext_char_property_change, 1, 2, 0, |
8c1a1077 | 689 | doc: /* Return the position of next text property or overlay change. |
81f6e55f FP |
690 | This scans characters forward in the current buffer from POSITION till |
691 | it finds a change in some text property, or the beginning or end of an | |
692 | overlay, and returns the position of that. | |
85cc6738 | 693 | If none is found up to (point-max), the function returns (point-max). |
8c1a1077 | 694 | |
a41292c2 | 695 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
696 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
697 | LIMIT is a no-op if it is greater than (point-max). */) | |
5842a27b | 698 | (Lisp_Object position, Lisp_Object limit) |
fcab51aa RS |
699 | { |
700 | Lisp_Object temp; | |
701 | ||
702 | temp = Fnext_overlay_change (position); | |
703 | if (! NILP (limit)) | |
704 | { | |
d615870a | 705 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
706 | if (XINT (limit) < XINT (temp)) |
707 | temp = limit; | |
708 | } | |
709 | return Fnext_property_change (position, Qnil, temp); | |
710 | } | |
711 | ||
a7ca3326 | 712 | DEFUN ("previous-char-property-change", Fprevious_char_property_change, |
fcab51aa | 713 | Sprevious_char_property_change, 1, 2, 0, |
8c1a1077 | 714 | doc: /* Return the position of previous text property or overlay change. |
81f6e55f FP |
715 | Scans characters backward in the current buffer from POSITION till it |
716 | finds a change in some text property, or the beginning or end of an | |
717 | overlay, and returns the position of that. | |
85cc6738 | 718 | If none is found since (point-min), the function returns (point-min). |
8c1a1077 | 719 | |
a41292c2 | 720 | If the optional second argument LIMIT is non-nil, don't search |
85cc6738 RS |
721 | past position LIMIT; return LIMIT if nothing is found before LIMIT. |
722 | LIMIT is a no-op if it is less than (point-min). */) | |
5842a27b | 723 | (Lisp_Object position, Lisp_Object limit) |
fcab51aa RS |
724 | { |
725 | Lisp_Object temp; | |
f5957179 | 726 | |
fcab51aa RS |
727 | temp = Fprevious_overlay_change (position); |
728 | if (! NILP (limit)) | |
729 | { | |
d615870a | 730 | CHECK_NUMBER_COERCE_MARKER (limit); |
fcab51aa RS |
731 | if (XINT (limit) > XINT (temp)) |
732 | temp = limit; | |
733 | } | |
734 | return Fprevious_property_change (position, Qnil, temp); | |
735 | } | |
0b0737d1 GM |
736 | |
737 | ||
a7ca3326 | 738 | DEFUN ("next-single-char-property-change", Fnext_single_char_property_change, |
b7e047fb | 739 | Snext_single_char_property_change, 2, 4, 0, |
8c1a1077 PJ |
740 | doc: /* Return the position of next text property or overlay change for a specific property. |
741 | Scans characters forward from POSITION till it finds | |
742 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
743 | If the optional third argument OBJECT is a buffer (or nil, which means |
744 | the current buffer), POSITION is a buffer position (integer or marker). | |
745 | If OBJECT is a string, POSITION is a 0-based index into it. | |
746 | ||
85cc6738 RS |
747 | In a string, scan runs to the end of the string. |
748 | In a buffer, it runs to (point-max), and the value cannot exceed that. | |
749 | ||
8c1a1077 PJ |
750 | The property values are compared with `eq'. |
751 | If the property is constant all the way to the end of OBJECT, return the | |
752 | last valid position in OBJECT. | |
753 | If the optional fourth argument LIMIT is non-nil, don't search | |
754 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 755 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
0b0737d1 GM |
756 | { |
757 | if (STRINGP (object)) | |
758 | { | |
b7e047fb MB |
759 | position = Fnext_single_property_change (position, prop, object, limit); |
760 | if (NILP (position)) | |
0b0737d1 GM |
761 | { |
762 | if (NILP (limit)) | |
d5db4077 | 763 | position = make_number (SCHARS (object)); |
0b0737d1 | 764 | else |
d615870a DK |
765 | { |
766 | CHECK_NUMBER (limit); | |
767 | position = limit; | |
768 | } | |
0b0737d1 GM |
769 | } |
770 | } | |
771 | else | |
772 | { | |
773 | Lisp_Object initial_value, value; | |
aed13378 | 774 | int count = SPECPDL_INDEX (); |
0b0737d1 | 775 | |
b7e047fb | 776 | if (! NILP (object)) |
b7826503 | 777 | CHECK_BUFFER (object); |
81f6e55f | 778 | |
0b0737d1 GM |
779 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
780 | { | |
781 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
782 | Fset_buffer (object); | |
783 | } | |
784 | ||
d615870a DK |
785 | CHECK_NUMBER_COERCE_MARKER (position); |
786 | ||
b7e047fb | 787 | initial_value = Fget_char_property (position, prop, object); |
81f6e55f | 788 | |
b7e047fb | 789 | if (NILP (limit)) |
85cc6738 | 790 | XSETFASTINT (limit, ZV); |
b7e047fb | 791 | else |
b7826503 | 792 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 793 | |
85cc6738 | 794 | if (XFASTINT (position) >= XFASTINT (limit)) |
0b0737d1 | 795 | { |
85cc6738 RS |
796 | position = limit; |
797 | if (XFASTINT (position) > ZV) | |
798 | XSETFASTINT (position, ZV); | |
0b0737d1 | 799 | } |
85cc6738 RS |
800 | else |
801 | while (1) | |
802 | { | |
803 | position = Fnext_char_property_change (position, limit); | |
804 | if (XFASTINT (position) >= XFASTINT (limit)) | |
805 | { | |
806 | position = limit; | |
807 | break; | |
808 | } | |
809 | ||
810 | value = Fget_char_property (position, prop, object); | |
811 | if (!EQ (value, initial_value)) | |
812 | break; | |
813 | } | |
0b0737d1 GM |
814 | |
815 | unbind_to (count, Qnil); | |
816 | } | |
817 | ||
b7e047fb | 818 | return position; |
0b0737d1 GM |
819 | } |
820 | ||
a7ca3326 | 821 | DEFUN ("previous-single-char-property-change", |
b7e047fb MB |
822 | Fprevious_single_char_property_change, |
823 | Sprevious_single_char_property_change, 2, 4, 0, | |
8c1a1077 PJ |
824 | doc: /* Return the position of previous text property or overlay change for a specific property. |
825 | Scans characters backward from POSITION till it finds | |
826 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
827 | If the optional third argument OBJECT is a buffer (or nil, which means |
828 | the current buffer), POSITION is a buffer position (integer or marker). | |
829 | If OBJECT is a string, POSITION is a 0-based index into it. | |
830 | ||
85cc6738 RS |
831 | In a string, scan runs to the start of the string. |
832 | In a buffer, it runs to (point-min), and the value cannot be less than that. | |
833 | ||
8c1a1077 PJ |
834 | The property values are compared with `eq'. |
835 | If the property is constant all the way to the start of OBJECT, return the | |
836 | first valid position in OBJECT. | |
e531bdff DA |
837 | If the optional fourth argument LIMIT is non-nil, don't search back past |
838 | position LIMIT; return LIMIT if nothing is found before reaching LIMIT. */) | |
5842a27b | 839 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
b7e047fb MB |
840 | { |
841 | if (STRINGP (object)) | |
842 | { | |
843 | position = Fprevious_single_property_change (position, prop, object, limit); | |
844 | if (NILP (position)) | |
845 | { | |
846 | if (NILP (limit)) | |
1e02f3cb | 847 | position = make_number (0); |
b7e047fb | 848 | else |
d615870a DK |
849 | { |
850 | CHECK_NUMBER (limit); | |
851 | position = limit; | |
852 | } | |
b7e047fb MB |
853 | } |
854 | } | |
855 | else | |
856 | { | |
aed13378 | 857 | int count = SPECPDL_INDEX (); |
b7e047fb MB |
858 | |
859 | if (! NILP (object)) | |
b7826503 | 860 | CHECK_BUFFER (object); |
81f6e55f | 861 | |
b7e047fb MB |
862 | if (BUFFERP (object) && current_buffer != XBUFFER (object)) |
863 | { | |
864 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
865 | Fset_buffer (object); | |
866 | } | |
81f6e55f | 867 | |
d615870a DK |
868 | CHECK_NUMBER_COERCE_MARKER (position); |
869 | ||
b7e047fb | 870 | if (NILP (limit)) |
85cc6738 | 871 | XSETFASTINT (limit, BEGV); |
b7e047fb | 872 | else |
b7826503 | 873 | CHECK_NUMBER_COERCE_MARKER (limit); |
b7e047fb | 874 | |
ce6b02e0 | 875 | if (XFASTINT (position) <= XFASTINT (limit)) |
85cc6738 RS |
876 | { |
877 | position = limit; | |
878 | if (XFASTINT (position) < BEGV) | |
879 | XSETFASTINT (position, BEGV); | |
880 | } | |
ce6b02e0 | 881 | else |
b7e047fb | 882 | { |
85cc6738 RS |
883 | Lisp_Object initial_value |
884 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
885 | prop, object); | |
81f6e55f | 886 | |
85cc6738 | 887 | while (1) |
ce6b02e0 MB |
888 | { |
889 | position = Fprevious_char_property_change (position, limit); | |
0b0737d1 | 890 | |
ce6b02e0 MB |
891 | if (XFASTINT (position) <= XFASTINT (limit)) |
892 | { | |
893 | position = limit; | |
894 | break; | |
895 | } | |
896 | else | |
897 | { | |
85cc6738 RS |
898 | Lisp_Object value |
899 | = Fget_char_property (make_number (XFASTINT (position) - 1), | |
900 | prop, object); | |
ce6b02e0 MB |
901 | |
902 | if (!EQ (value, initial_value)) | |
903 | break; | |
904 | } | |
905 | } | |
b7e047fb MB |
906 | } |
907 | ||
908 | unbind_to (count, Qnil); | |
909 | } | |
910 | ||
911 | return position; | |
912 | } | |
fcab51aa | 913 | \f |
a7ca3326 | 914 | DEFUN ("next-property-change", Fnext_property_change, |
111b637d | 915 | Snext_property_change, 1, 3, 0, |
8c1a1077 PJ |
916 | doc: /* Return the position of next property change. |
917 | Scans characters forward from POSITION in OBJECT till it finds | |
918 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
919 | If the optional second argument OBJECT is a buffer (or nil, which means |
920 | the current buffer), POSITION is a buffer position (integer or marker). | |
921 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
922 | Return nil if the property is constant all the way to the end of OBJECT. |
923 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
924 | ||
925 | If the optional third argument LIMIT is non-nil, don't search | |
926 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 927 | (Lisp_Object position, Lisp_Object object, Lisp_Object limit) |
d418ef42 JA |
928 | { |
929 | register INTERVAL i, next; | |
930 | ||
5fbe2a44 | 931 | if (NILP (object)) |
c8a4fc3d | 932 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 933 | |
3a232704 | 934 | if (!NILP (limit) && !EQ (limit, Qt)) |
b7826503 | 935 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 936 | |
1f5e848a | 937 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 | 938 | |
041aa96f RS |
939 | /* If LIMIT is t, return start of next interval--don't |
940 | bother checking further intervals. */ | |
941 | if (EQ (limit, Qt)) | |
942 | { | |
44214c1b RS |
943 | if (NULL_INTERVAL_P (i)) |
944 | next = i; | |
945 | else | |
946 | next = next_interval (i); | |
81f6e55f | 947 | |
c7b6dfa6 | 948 | if (NULL_INTERVAL_P (next)) |
1f5e848a | 949 | XSETFASTINT (position, (STRINGP (object) |
d5db4077 | 950 | ? SCHARS (object) |
1f5e848a | 951 | : BUF_ZV (XBUFFER (object)))); |
c7b6dfa6 | 952 | else |
ad077db0 | 953 | XSETFASTINT (position, next->position); |
1f5e848a | 954 | return position; |
041aa96f RS |
955 | } |
956 | ||
44214c1b RS |
957 | if (NULL_INTERVAL_P (i)) |
958 | return limit; | |
959 | ||
960 | next = next_interval (i); | |
961 | ||
3a232704 | 962 | while (!NULL_INTERVAL_P (next) && intervals_equal (i, next) |
ad077db0 | 963 | && (NILP (limit) || next->position < XFASTINT (limit))) |
d418ef42 JA |
964 | next = next_interval (next); |
965 | ||
52c0f270 CY |
966 | if (NULL_INTERVAL_P (next) |
967 | || (next->position | |
968 | >= (INTEGERP (limit) | |
969 | ? XFASTINT (limit) | |
970 | : (STRINGP (object) | |
971 | ? SCHARS (object) | |
972 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 973 | return limit; |
52c0f270 CY |
974 | else |
975 | return make_number (next->position); | |
19e1c426 RS |
976 | } |
977 | ||
a7ca3326 | 978 | DEFUN ("next-single-property-change", Fnext_single_property_change, |
111b637d | 979 | Snext_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
980 | doc: /* Return the position of next property change for a specific property. |
981 | Scans characters forward from POSITION till it finds | |
982 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
983 | If the optional third argument OBJECT is a buffer (or nil, which means |
984 | the current buffer), POSITION is a buffer position (integer or marker). | |
985 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
986 | The property values are compared with `eq'. |
987 | Return nil if the property is constant all the way to the end of OBJECT. | |
988 | If the value is non-nil, it is a position greater than POSITION, never equal. | |
989 | ||
990 | If the optional fourth argument LIMIT is non-nil, don't search | |
991 | past position LIMIT; return LIMIT if nothing is found before LIMIT. */) | |
5842a27b | 992 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
9c79dd1b JA |
993 | { |
994 | register INTERVAL i, next; | |
995 | register Lisp_Object here_val; | |
996 | ||
5fbe2a44 | 997 | if (NILP (object)) |
c8a4fc3d | 998 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 999 | |
1387d54e | 1000 | if (!NILP (limit)) |
b7826503 | 1001 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1002 | |
1f5e848a | 1003 | i = validate_interval_range (object, &position, &position, soft); |
9c79dd1b | 1004 | if (NULL_INTERVAL_P (i)) |
111b637d | 1005 | return limit; |
9c79dd1b | 1006 | |
6a0486dd | 1007 | here_val = textget (i->plist, prop); |
9c79dd1b | 1008 | next = next_interval (i); |
81f6e55f | 1009 | while (! NULL_INTERVAL_P (next) |
111b637d | 1010 | && EQ (here_val, textget (next->plist, prop)) |
ad077db0 | 1011 | && (NILP (limit) || next->position < XFASTINT (limit))) |
9c79dd1b JA |
1012 | next = next_interval (next); |
1013 | ||
52c0f270 CY |
1014 | if (NULL_INTERVAL_P (next) |
1015 | || (next->position | |
1016 | >= (INTEGERP (limit) | |
1017 | ? XFASTINT (limit) | |
1018 | : (STRINGP (object) | |
1019 | ? SCHARS (object) | |
1020 | : BUF_ZV (XBUFFER (object)))))) | |
111b637d | 1021 | return limit; |
52c0f270 CY |
1022 | else |
1023 | return make_number (next->position); | |
9c79dd1b JA |
1024 | } |
1025 | ||
a7ca3326 | 1026 | DEFUN ("previous-property-change", Fprevious_property_change, |
111b637d | 1027 | Sprevious_property_change, 1, 3, 0, |
8c1a1077 PJ |
1028 | doc: /* Return the position of previous property change. |
1029 | Scans characters backwards from POSITION in OBJECT till it finds | |
1030 | a change in some text property, then returns the position of the change. | |
81f6e55f FP |
1031 | If the optional second argument OBJECT is a buffer (or nil, which means |
1032 | the current buffer), POSITION is a buffer position (integer or marker). | |
1033 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1034 | Return nil if the property is constant all the way to the start of OBJECT. |
1035 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1036 | ||
1037 | If the optional third argument LIMIT is non-nil, don't search | |
1038 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
5842a27b | 1039 | (Lisp_Object position, Lisp_Object object, Lisp_Object limit) |
d418ef42 JA |
1040 | { |
1041 | register INTERVAL i, previous; | |
1042 | ||
5fbe2a44 | 1043 | if (NILP (object)) |
c8a4fc3d | 1044 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1045 | |
1387d54e | 1046 | if (!NILP (limit)) |
b7826503 | 1047 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1048 | |
1f5e848a | 1049 | i = validate_interval_range (object, &position, &position, soft); |
d418ef42 | 1050 | if (NULL_INTERVAL_P (i)) |
111b637d | 1051 | return limit; |
d418ef42 | 1052 | |
53b7feec | 1053 | /* Start with the interval containing the char before point. */ |
1f5e848a | 1054 | if (i->position == XFASTINT (position)) |
53b7feec RS |
1055 | i = previous_interval (i); |
1056 | ||
d418ef42 | 1057 | previous = previous_interval (i); |
3a232704 | 1058 | while (!NULL_INTERVAL_P (previous) && intervals_equal (previous, i) |
111b637d | 1059 | && (NILP (limit) |
ad077db0 | 1060 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
d418ef42 | 1061 | previous = previous_interval (previous); |
d418ef42 | 1062 | |
52c0f270 CY |
1063 | if (NULL_INTERVAL_P (previous) |
1064 | || (previous->position + LENGTH (previous) | |
1065 | <= (INTEGERP (limit) | |
1066 | ? XFASTINT (limit) | |
1067 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1068 | return limit; | |
1069 | else | |
1070 | return make_number (previous->position + LENGTH (previous)); | |
d418ef42 JA |
1071 | } |
1072 | ||
a7ca3326 | 1073 | DEFUN ("previous-single-property-change", Fprevious_single_property_change, |
111b637d | 1074 | Sprevious_single_property_change, 2, 4, 0, |
8c1a1077 PJ |
1075 | doc: /* Return the position of previous property change for a specific property. |
1076 | Scans characters backward from POSITION till it finds | |
1077 | a change in the PROP property, then returns the position of the change. | |
81f6e55f FP |
1078 | If the optional third argument OBJECT is a buffer (or nil, which means |
1079 | the current buffer), POSITION is a buffer position (integer or marker). | |
1080 | If OBJECT is a string, POSITION is a 0-based index into it. | |
8c1a1077 PJ |
1081 | The property values are compared with `eq'. |
1082 | Return nil if the property is constant all the way to the start of OBJECT. | |
1083 | If the value is non-nil, it is a position less than POSITION, never equal. | |
1084 | ||
1085 | If the optional fourth argument LIMIT is non-nil, don't search | |
1086 | back past position LIMIT; return LIMIT if nothing is found until LIMIT. */) | |
5842a27b | 1087 | (Lisp_Object position, Lisp_Object prop, Lisp_Object object, Lisp_Object limit) |
9c79dd1b JA |
1088 | { |
1089 | register INTERVAL i, previous; | |
1090 | register Lisp_Object here_val; | |
1091 | ||
5fbe2a44 | 1092 | if (NILP (object)) |
c8a4fc3d | 1093 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1094 | |
1387d54e | 1095 | if (!NILP (limit)) |
b7826503 | 1096 | CHECK_NUMBER_COERCE_MARKER (limit); |
1387d54e | 1097 | |
1f5e848a | 1098 | i = validate_interval_range (object, &position, &position, soft); |
9c79dd1b | 1099 | |
53b7feec | 1100 | /* Start with the interval containing the char before point. */ |
3a232704 | 1101 | if (!NULL_INTERVAL_P (i) && i->position == XFASTINT (position)) |
53b7feec RS |
1102 | i = previous_interval (i); |
1103 | ||
6873cfa3 KH |
1104 | if (NULL_INTERVAL_P (i)) |
1105 | return limit; | |
1106 | ||
6a0486dd | 1107 | here_val = textget (i->plist, prop); |
9c79dd1b | 1108 | previous = previous_interval (i); |
3a232704 | 1109 | while (!NULL_INTERVAL_P (previous) |
111b637d RS |
1110 | && EQ (here_val, textget (previous->plist, prop)) |
1111 | && (NILP (limit) | |
ad077db0 | 1112 | || (previous->position + LENGTH (previous) > XFASTINT (limit)))) |
9c79dd1b | 1113 | previous = previous_interval (previous); |
9c79dd1b | 1114 | |
52c0f270 CY |
1115 | if (NULL_INTERVAL_P (previous) |
1116 | || (previous->position + LENGTH (previous) | |
1117 | <= (INTEGERP (limit) | |
1118 | ? XFASTINT (limit) | |
1119 | : (STRINGP (object) ? 0 : BUF_BEGV (XBUFFER (object)))))) | |
1120 | return limit; | |
1121 | else | |
1122 | return make_number (previous->position + LENGTH (previous)); | |
9c79dd1b | 1123 | } |
fcab51aa | 1124 | \f |
c98da214 RS |
1125 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1126 | ||
a7ca3326 | 1127 | DEFUN ("add-text-properties", Fadd_text_properties, |
5fbe2a44 | 1128 | Sadd_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1129 | doc: /* Add properties to the text from START to END. |
1130 | The third argument PROPERTIES is a property list | |
81f6e55f FP |
1131 | specifying the property values to add. If the optional fourth argument |
1132 | OBJECT is a buffer (or nil, which means the current buffer), | |
1133 | START and END are buffer positions (integers or markers). | |
1134 | If OBJECT is a string, START and END are 0-based indices into it. | |
8c1a1077 | 1135 | Return t if any property value actually changed, nil otherwise. */) |
5842a27b | 1136 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
d418ef42 JA |
1137 | { |
1138 | register INTERVAL i, unchanged; | |
2452438f EZ |
1139 | register EMACS_INT s, len; |
1140 | register int modified = 0; | |
c98da214 | 1141 | struct gcpro gcpro1; |
d418ef42 JA |
1142 | |
1143 | properties = validate_plist (properties); | |
1144 | if (NILP (properties)) | |
1145 | return Qnil; | |
1146 | ||
5fbe2a44 | 1147 | if (NILP (object)) |
c8a4fc3d | 1148 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1149 | |
d418ef42 JA |
1150 | i = validate_interval_range (object, &start, &end, hard); |
1151 | if (NULL_INTERVAL_P (i)) | |
1152 | return Qnil; | |
1153 | ||
1154 | s = XINT (start); | |
1155 | len = XINT (end) - s; | |
1156 | ||
c98da214 RS |
1157 | /* No need to protect OBJECT, because we GC only if it's a buffer, |
1158 | and live buffers are always protected. */ | |
1159 | GCPRO1 (properties); | |
1160 | ||
d418ef42 | 1161 | /* If we're not starting on an interval boundary, we have to |
cdf3e5a2 | 1162 | split this interval. */ |
d418ef42 JA |
1163 | if (i->position != s) |
1164 | { | |
1165 | /* If this interval already has the properties, we can | |
cdf3e5a2 | 1166 | skip it. */ |
d418ef42 JA |
1167 | if (interval_has_all_properties (properties, i)) |
1168 | { | |
2452438f | 1169 | EMACS_INT got = (LENGTH (i) - (s - i->position)); |
d418ef42 | 1170 | if (got >= len) |
64db1307 | 1171 | RETURN_UNGCPRO (Qnil); |
d418ef42 | 1172 | len -= got; |
05d5b93e | 1173 | i = next_interval (i); |
d418ef42 JA |
1174 | } |
1175 | else | |
1176 | { | |
1177 | unchanged = i; | |
ad9c1940 | 1178 | i = split_interval_right (unchanged, s - unchanged->position); |
d418ef42 | 1179 | copy_properties (unchanged, i); |
d418ef42 JA |
1180 | } |
1181 | } | |
1182 | ||
2a631db1 | 1183 | if (BUFFERP (object)) |
3e145152 | 1184 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1185 | |
daa5e28f | 1186 | /* We are at the beginning of interval I, with LEN chars to scan. */ |
caa31568 | 1187 | for (;;) |
d418ef42 | 1188 | { |
d4b530ad RS |
1189 | if (i == 0) |
1190 | abort (); | |
1191 | ||
d418ef42 JA |
1192 | if (LENGTH (i) >= len) |
1193 | { | |
c98da214 RS |
1194 | /* We can UNGCPRO safely here, because there will be just |
1195 | one more chance to gc, in the next call to add_properties, | |
1196 | and after that we will not need PROPERTIES or OBJECT again. */ | |
1197 | UNGCPRO; | |
1198 | ||
d418ef42 | 1199 | if (interval_has_all_properties (properties, i)) |
26c76ace | 1200 | { |
2a631db1 RS |
1201 | if (BUFFERP (object)) |
1202 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1203 | XINT (end) - XINT (start)); | |
26c76ace RS |
1204 | |
1205 | return modified ? Qt : Qnil; | |
1206 | } | |
d418ef42 JA |
1207 | |
1208 | if (LENGTH (i) == len) | |
1209 | { | |
d4b530ad | 1210 | add_properties (properties, i, object); |
2a631db1 RS |
1211 | if (BUFFERP (object)) |
1212 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1213 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1214 | return Qt; |
1215 | } | |
1216 | ||
1217 | /* i doesn't have the properties, and goes past the change limit */ | |
1218 | unchanged = i; | |
ad9c1940 | 1219 | i = split_interval_left (unchanged, len); |
d418ef42 | 1220 | copy_properties (unchanged, i); |
d4b530ad | 1221 | add_properties (properties, i, object); |
2a631db1 RS |
1222 | if (BUFFERP (object)) |
1223 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1224 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1225 | return Qt; |
1226 | } | |
1227 | ||
1228 | len -= LENGTH (i); | |
d4b530ad | 1229 | modified += add_properties (properties, i, object); |
d418ef42 JA |
1230 | i = next_interval (i); |
1231 | } | |
1232 | } | |
1233 | ||
c98da214 RS |
1234 | /* Callers note, this can GC when OBJECT is a buffer (or nil). */ |
1235 | ||
a7ca3326 | 1236 | DEFUN ("put-text-property", Fput_text_property, |
d4b530ad | 1237 | Sput_text_property, 4, 5, 0, |
8c1a1077 PJ |
1238 | doc: /* Set one property of the text from START to END. |
1239 | The third and fourth arguments PROPERTY and VALUE | |
1240 | specify the property to add. | |
81f6e55f FP |
1241 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1242 | the current buffer), START and END are buffer positions (integers or | |
1243 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1244 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
d4b530ad RS |
1245 | { |
1246 | Fadd_text_properties (start, end, | |
1f5e848a | 1247 | Fcons (property, Fcons (value, Qnil)), |
d4b530ad RS |
1248 | object); |
1249 | return Qnil; | |
1250 | } | |
1251 | ||
a7ca3326 | 1252 | DEFUN ("set-text-properties", Fset_text_properties, |
5fbe2a44 | 1253 | Sset_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1254 | doc: /* Completely replace properties of text from START to END. |
1255 | The third argument PROPERTIES is the new property list. | |
81f6e55f FP |
1256 | If the optional fourth 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. | |
8c1a1077 PJ |
1259 | If PROPERTIES is nil, the effect is to remove all properties from |
1260 | the designated part of OBJECT. */) | |
5842a27b | 1261 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
0087ade6 GM |
1262 | { |
1263 | return set_text_properties (start, end, properties, object, Qt); | |
1264 | } | |
1265 | ||
1266 | ||
1267 | /* Replace properties of text from START to END with new list of | |
1268 | properties PROPERTIES. OBJECT is the buffer or string containing | |
1269 | the text. OBJECT nil means use the current buffer. | |
9c345213 AM |
1270 | COHERENT_CHANGE_P nil means this is being called as an internal |
1271 | subroutine, rather than as a change primitive with checking of | |
1272 | read-only, invoking change hooks, etc.. Value is nil if the | |
1273 | function _detected_ that it did not replace any properties, non-nil | |
1274 | otherwise. */ | |
0087ade6 GM |
1275 | |
1276 | Lisp_Object | |
971de7fb | 1277 | set_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object, Lisp_Object coherent_change_p) |
d418ef42 | 1278 | { |
28ff4293 | 1279 | register INTERVAL i; |
33d7d0df RS |
1280 | Lisp_Object ostart, oend; |
1281 | ||
1282 | ostart = start; | |
1283 | oend = end; | |
d418ef42 | 1284 | |
1f5e848a | 1285 | properties = validate_plist (properties); |
d418ef42 | 1286 | |
5fbe2a44 | 1287 | if (NILP (object)) |
c8a4fc3d | 1288 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1289 | |
919fa9cb RS |
1290 | /* If we want no properties for a whole string, |
1291 | get rid of its intervals. */ | |
1f5e848a | 1292 | if (NILP (properties) && STRINGP (object) |
919fa9cb | 1293 | && XFASTINT (start) == 0 |
d5db4077 | 1294 | && XFASTINT (end) == SCHARS (object)) |
919fa9cb | 1295 | { |
d5db4077 | 1296 | if (! STRING_INTERVALS (object)) |
537562fa | 1297 | return Qnil; |
26c76ace | 1298 | |
9056febe | 1299 | STRING_SET_INTERVALS (object, NULL_INTERVAL); |
919fa9cb RS |
1300 | return Qt; |
1301 | } | |
1302 | ||
facc570e | 1303 | i = validate_interval_range (object, &start, &end, soft); |
919fa9cb | 1304 | |
d418ef42 | 1305 | if (NULL_INTERVAL_P (i)) |
facc570e | 1306 | { |
1f5e848a EN |
1307 | /* If buffer has no properties, and we want none, return now. */ |
1308 | if (NILP (properties)) | |
facc570e RS |
1309 | return Qnil; |
1310 | ||
33d7d0df RS |
1311 | /* Restore the original START and END values |
1312 | because validate_interval_range increments them for strings. */ | |
1313 | start = ostart; | |
1314 | end = oend; | |
1315 | ||
facc570e RS |
1316 | i = validate_interval_range (object, &start, &end, hard); |
1317 | /* This can return if start == end. */ | |
1318 | if (NULL_INTERVAL_P (i)) | |
1319 | return Qnil; | |
1320 | } | |
d418ef42 | 1321 | |
9c345213 | 1322 | if (BUFFERP (object) && !NILP (coherent_change_p)) |
3e145152 | 1323 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1324 | |
78ff4175 RS |
1325 | set_text_properties_1 (start, end, properties, object, i); |
1326 | ||
9c345213 | 1327 | if (BUFFERP (object) && !NILP (coherent_change_p)) |
78ff4175 RS |
1328 | signal_after_change (XINT (start), XINT (end) - XINT (start), |
1329 | XINT (end) - XINT (start)); | |
1330 | return Qt; | |
1331 | } | |
1332 | ||
1333 | /* Replace properties of text from START to END with new list of | |
1334 | properties PROPERTIES. BUFFER is the buffer containing | |
1335 | the text. This does not obey any hooks. | |
1336 | You can provide the interval that START is located in as I, | |
ce768453 | 1337 | or pass NULL for I and this function will find it. |
49f68fd2 | 1338 | START and END can be in any order. */ |
78ff4175 RS |
1339 | |
1340 | void | |
971de7fb | 1341 | set_text_properties_1 (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object buffer, INTERVAL i) |
78ff4175 RS |
1342 | { |
1343 | register INTERVAL prev_changed = NULL_INTERVAL; | |
2452438f | 1344 | register EMACS_INT s, len; |
78ff4175 RS |
1345 | INTERVAL unchanged; |
1346 | ||
67769ffc | 1347 | if (XINT (start) < XINT (end)) |
49f68fd2 | 1348 | { |
67769ffc PE |
1349 | s = XINT (start); |
1350 | len = XINT (end) - s; | |
49f68fd2 | 1351 | } |
67769ffc PE |
1352 | else if (XINT (end) < XINT (start)) |
1353 | { | |
1354 | s = XINT (end); | |
1355 | len = XINT (start) - s; | |
1356 | } | |
1357 | else | |
1358 | return; | |
49f68fd2 | 1359 | |
78ff4175 RS |
1360 | if (i == 0) |
1361 | i = find_interval (BUF_INTERVALS (XBUFFER (buffer)), s); | |
1362 | ||
d418ef42 JA |
1363 | if (i->position != s) |
1364 | { | |
1365 | unchanged = i; | |
ad9c1940 | 1366 | i = split_interval_right (unchanged, s - unchanged->position); |
7855e674 | 1367 | |
d418ef42 JA |
1368 | if (LENGTH (i) > len) |
1369 | { | |
9c79dd1b | 1370 | copy_properties (unchanged, i); |
ad9c1940 | 1371 | i = split_interval_left (i, len); |
78ff4175 RS |
1372 | set_properties (properties, i, buffer); |
1373 | return; | |
d418ef42 JA |
1374 | } |
1375 | ||
78ff4175 | 1376 | set_properties (properties, i, buffer); |
daa5e28f | 1377 | |
9c79dd1b | 1378 | if (LENGTH (i) == len) |
78ff4175 | 1379 | return; |
9c79dd1b JA |
1380 | |
1381 | prev_changed = i; | |
d418ef42 JA |
1382 | len -= LENGTH (i); |
1383 | i = next_interval (i); | |
1384 | } | |
1385 | ||
1e792e4d PE |
1386 | /* We are starting at the beginning of an interval I. LEN is positive. */ |
1387 | do | |
d418ef42 | 1388 | { |
d4b530ad RS |
1389 | if (i == 0) |
1390 | abort (); | |
1391 | ||
d418ef42 JA |
1392 | if (LENGTH (i) >= len) |
1393 | { | |
cd7d971d | 1394 | if (LENGTH (i) > len) |
ad9c1940 | 1395 | i = split_interval_left (i, len); |
d418ef42 | 1396 | |
6f232881 RS |
1397 | /* We have to call set_properties even if we are going to |
1398 | merge the intervals, so as to make the undo records | |
1399 | and cause redisplay to happen. */ | |
78ff4175 | 1400 | set_properties (properties, i, buffer); |
6f232881 | 1401 | if (!NULL_INTERVAL_P (prev_changed)) |
9c79dd1b | 1402 | merge_interval_left (i); |
78ff4175 | 1403 | return; |
d418ef42 JA |
1404 | } |
1405 | ||
1406 | len -= LENGTH (i); | |
6f232881 RS |
1407 | |
1408 | /* We have to call set_properties even if we are going to | |
1409 | merge the intervals, so as to make the undo records | |
1410 | and cause redisplay to happen. */ | |
78ff4175 | 1411 | set_properties (properties, i, buffer); |
9c79dd1b | 1412 | if (NULL_INTERVAL_P (prev_changed)) |
6f232881 | 1413 | prev_changed = i; |
9c79dd1b JA |
1414 | else |
1415 | prev_changed = i = merge_interval_left (i); | |
1416 | ||
d418ef42 JA |
1417 | i = next_interval (i); |
1418 | } | |
1e792e4d | 1419 | while (len > 0); |
d418ef42 JA |
1420 | } |
1421 | ||
a7ca3326 | 1422 | DEFUN ("remove-text-properties", Fremove_text_properties, |
5fbe2a44 | 1423 | Sremove_text_properties, 3, 4, 0, |
8c1a1077 PJ |
1424 | doc: /* Remove some properties from text from START to END. |
1425 | The third argument PROPERTIES is a property list | |
1426 | whose property names specify the properties to remove. | |
1427 | \(The values stored in PROPERTIES are ignored.) | |
81f6e55f FP |
1428 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1429 | the current buffer), START and END are buffer positions (integers or | |
1430 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
1431 | Return t if any property was actually removed, nil otherwise. | |
1432 | ||
518c0b83 | 1433 | Use `set-text-properties' if you want to remove all text properties. */) |
5842a27b | 1434 | (Lisp_Object start, Lisp_Object end, Lisp_Object properties, Lisp_Object object) |
d418ef42 JA |
1435 | { |
1436 | register INTERVAL i, unchanged; | |
2452438f EZ |
1437 | register EMACS_INT s, len; |
1438 | register int modified = 0; | |
d418ef42 | 1439 | |
5fbe2a44 | 1440 | if (NILP (object)) |
c8a4fc3d | 1441 | XSETBUFFER (object, current_buffer); |
5fbe2a44 | 1442 | |
d418ef42 JA |
1443 | i = validate_interval_range (object, &start, &end, soft); |
1444 | if (NULL_INTERVAL_P (i)) | |
1445 | return Qnil; | |
1446 | ||
1447 | s = XINT (start); | |
1448 | len = XINT (end) - s; | |
9c79dd1b | 1449 | |
d418ef42 JA |
1450 | if (i->position != s) |
1451 | { | |
1452 | /* No properties on this first interval -- return if | |
cdf3e5a2 | 1453 | it covers the entire region. */ |
1f5e848a | 1454 | if (! interval_has_some_properties (properties, i)) |
d418ef42 | 1455 | { |
2452438f | 1456 | EMACS_INT got = (LENGTH (i) - (s - i->position)); |
d418ef42 JA |
1457 | if (got >= len) |
1458 | return Qnil; | |
1459 | len -= got; | |
05d5b93e | 1460 | i = next_interval (i); |
d418ef42 | 1461 | } |
daa5e28f RS |
1462 | /* Split away the beginning of this interval; what we don't |
1463 | want to modify. */ | |
d418ef42 JA |
1464 | else |
1465 | { | |
1466 | unchanged = i; | |
ad9c1940 | 1467 | i = split_interval_right (unchanged, s - unchanged->position); |
d418ef42 | 1468 | copy_properties (unchanged, i); |
d418ef42 JA |
1469 | } |
1470 | } | |
1471 | ||
2a631db1 | 1472 | if (BUFFERP (object)) |
3e145152 | 1473 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
26c76ace | 1474 | |
d418ef42 | 1475 | /* We are at the beginning of an interval, with len to scan */ |
caa31568 | 1476 | for (;;) |
d418ef42 | 1477 | { |
d4b530ad RS |
1478 | if (i == 0) |
1479 | abort (); | |
1480 | ||
d418ef42 JA |
1481 | if (LENGTH (i) >= len) |
1482 | { | |
1f5e848a | 1483 | if (! interval_has_some_properties (properties, i)) |
d418ef42 JA |
1484 | return modified ? Qt : Qnil; |
1485 | ||
1486 | if (LENGTH (i) == len) | |
1487 | { | |
11713b6d RS |
1488 | remove_properties (properties, Qnil, i, object); |
1489 | if (BUFFERP (object)) | |
1490 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1491 | XINT (end) - XINT (start)); | |
1492 | return Qt; | |
1493 | } | |
1494 | ||
1495 | /* i has the properties, and goes past the change limit */ | |
1496 | unchanged = i; | |
1497 | i = split_interval_left (i, len); | |
1498 | copy_properties (unchanged, i); | |
1499 | remove_properties (properties, Qnil, i, object); | |
1500 | if (BUFFERP (object)) | |
1501 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1502 | XINT (end) - XINT (start)); | |
1503 | return Qt; | |
1504 | } | |
1505 | ||
1506 | len -= LENGTH (i); | |
1507 | modified += remove_properties (properties, Qnil, i, object); | |
1508 | i = next_interval (i); | |
1509 | } | |
1510 | } | |
1511 | ||
a7ca3326 | 1512 | DEFUN ("remove-list-of-text-properties", Fremove_list_of_text_properties, |
11713b6d RS |
1513 | Sremove_list_of_text_properties, 3, 4, 0, |
1514 | doc: /* Remove some properties from text from START to END. | |
1515 | The third argument LIST-OF-PROPERTIES is a list of property names to remove. | |
81f6e55f FP |
1516 | If the optional fourth argument OBJECT is a buffer (or nil, which means |
1517 | the current buffer), START and END are buffer positions (integers or | |
1518 | markers). If OBJECT is a string, START and END are 0-based indices into it. | |
11713b6d | 1519 | Return t if any property was actually removed, nil otherwise. */) |
5842a27b | 1520 | (Lisp_Object start, Lisp_Object end, Lisp_Object list_of_properties, Lisp_Object object) |
11713b6d RS |
1521 | { |
1522 | register INTERVAL i, unchanged; | |
2452438f EZ |
1523 | register EMACS_INT s, len; |
1524 | register int modified = 0; | |
11713b6d RS |
1525 | Lisp_Object properties; |
1526 | properties = list_of_properties; | |
1527 | ||
1528 | if (NILP (object)) | |
1529 | XSETBUFFER (object, current_buffer); | |
1530 | ||
1531 | i = validate_interval_range (object, &start, &end, soft); | |
1532 | if (NULL_INTERVAL_P (i)) | |
1533 | return Qnil; | |
1534 | ||
1535 | s = XINT (start); | |
1536 | len = XINT (end) - s; | |
1537 | ||
1538 | if (i->position != s) | |
1539 | { | |
1540 | /* No properties on this first interval -- return if | |
1541 | it covers the entire region. */ | |
1542 | if (! interval_has_some_properties_list (properties, i)) | |
1543 | { | |
2452438f | 1544 | EMACS_INT got = (LENGTH (i) - (s - i->position)); |
11713b6d RS |
1545 | if (got >= len) |
1546 | return Qnil; | |
1547 | len -= got; | |
1548 | i = next_interval (i); | |
1549 | } | |
1550 | /* Split away the beginning of this interval; what we don't | |
1551 | want to modify. */ | |
1552 | else | |
1553 | { | |
1554 | unchanged = i; | |
1555 | i = split_interval_right (unchanged, s - unchanged->position); | |
1556 | copy_properties (unchanged, i); | |
1557 | } | |
1558 | } | |
1559 | ||
9b17c9f5 LH |
1560 | /* We are at the beginning of an interval, with len to scan. |
1561 | The flag `modified' records if changes have been made. | |
1562 | When object is a buffer, we must call modify_region before changes are | |
1563 | made and signal_after_change when we are done. | |
e0f24100 GM |
1564 | We call modify_region before calling remove_properties if modified == 0, |
1565 | and we call signal_after_change before returning if modified != 0. */ | |
11713b6d RS |
1566 | for (;;) |
1567 | { | |
1568 | if (i == 0) | |
1569 | abort (); | |
1570 | ||
1571 | if (LENGTH (i) >= len) | |
1572 | { | |
1573 | if (! interval_has_some_properties_list (properties, i)) | |
ef1b0ba7 SM |
1574 | { |
1575 | if (modified) | |
1576 | { | |
1577 | if (BUFFERP (object)) | |
1578 | signal_after_change (XINT (start), | |
1579 | XINT (end) - XINT (start), | |
1580 | XINT (end) - XINT (start)); | |
1581 | return Qt; | |
1582 | } | |
1583 | else | |
1584 | return Qnil; | |
1585 | } | |
1586 | else if (LENGTH (i) == len) | |
11713b6d | 1587 | { |
9b17c9f5 | 1588 | if (!modified && BUFFERP (object)) |
3e145152 | 1589 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
11713b6d | 1590 | remove_properties (Qnil, properties, i, object); |
2a631db1 RS |
1591 | if (BUFFERP (object)) |
1592 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1593 | XINT (end) - XINT (start)); | |
d418ef42 JA |
1594 | return Qt; |
1595 | } | |
ef1b0ba7 SM |
1596 | else |
1597 | { /* i has the properties, and goes past the change limit. */ | |
1598 | unchanged = i; | |
1599 | i = split_interval_left (i, len); | |
1600 | copy_properties (unchanged, i); | |
1601 | if (!modified && BUFFERP (object)) | |
1602 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); | |
1603 | remove_properties (Qnil, properties, i, object); | |
1604 | if (BUFFERP (object)) | |
1605 | signal_after_change (XINT (start), XINT (end) - XINT (start), | |
1606 | XINT (end) - XINT (start)); | |
1607 | return Qt; | |
1608 | } | |
d418ef42 | 1609 | } |
9b17c9f5 LH |
1610 | if (interval_has_some_properties_list (properties, i)) |
1611 | { | |
1612 | if (!modified && BUFFERP (object)) | |
3e145152 | 1613 | modify_region (XBUFFER (object), XINT (start), XINT (end), 1); |
9b17c9f5 LH |
1614 | remove_properties (Qnil, properties, i, object); |
1615 | modified = 1; | |
1616 | } | |
d418ef42 | 1617 | len -= LENGTH (i); |
d418ef42 JA |
1618 | i = next_interval (i); |
1619 | } | |
1620 | } | |
fcab51aa | 1621 | \f |
a7ca3326 | 1622 | DEFUN ("text-property-any", Ftext_property_any, |
ad9c1940 | 1623 | Stext_property_any, 4, 5, 0, |
fa463103 | 1624 | doc: /* Check text from START to END for property PROPERTY equaling VALUE. |
8c1a1077 PJ |
1625 | If so, return the position of the first character whose property PROPERTY |
1626 | is `eq' to VALUE. Otherwise return nil. | |
81f6e55f FP |
1627 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1628 | the current buffer), START and END are buffer positions (integers or | |
1629 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1630 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
ad9c1940 JB |
1631 | { |
1632 | register INTERVAL i; | |
2452438f | 1633 | register EMACS_INT e, pos; |
ad9c1940 JB |
1634 | |
1635 | if (NILP (object)) | |
c8a4fc3d | 1636 | XSETBUFFER (object, current_buffer); |
ad9c1940 | 1637 | i = validate_interval_range (object, &start, &end, soft); |
2084fddb KH |
1638 | if (NULL_INTERVAL_P (i)) |
1639 | return (!NILP (value) || EQ (start, end) ? Qnil : start); | |
ad9c1940 JB |
1640 | e = XINT (end); |
1641 | ||
1642 | while (! NULL_INTERVAL_P (i)) | |
1643 | { | |
1644 | if (i->position >= e) | |
1645 | break; | |
1f5e848a | 1646 | if (EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1647 | { |
1648 | pos = i->position; | |
1649 | if (pos < XINT (start)) | |
1650 | pos = XINT (start); | |
ad077db0 | 1651 | return make_number (pos); |
ad9c1940 JB |
1652 | } |
1653 | i = next_interval (i); | |
1654 | } | |
1655 | return Qnil; | |
1656 | } | |
1657 | ||
1658 | DEFUN ("text-property-not-all", Ftext_property_not_all, | |
1659 | Stext_property_not_all, 4, 5, 0, | |
fa463103 | 1660 | doc: /* Check text from START to END for property PROPERTY not equaling VALUE. |
8c1a1077 PJ |
1661 | If so, return the position of the first character whose property PROPERTY |
1662 | is not `eq' to VALUE. Otherwise, return nil. | |
81f6e55f FP |
1663 | If the optional fifth argument OBJECT is a buffer (or nil, which means |
1664 | the current buffer), START and END are buffer positions (integers or | |
1665 | markers). If OBJECT is a string, START and END are 0-based indices into it. */) | |
5842a27b | 1666 | (Lisp_Object start, Lisp_Object end, Lisp_Object property, Lisp_Object value, Lisp_Object object) |
ad9c1940 JB |
1667 | { |
1668 | register INTERVAL i; | |
2452438f | 1669 | register EMACS_INT s, e; |
ad9c1940 JB |
1670 | |
1671 | if (NILP (object)) | |
c8a4fc3d | 1672 | XSETBUFFER (object, current_buffer); |
ad9c1940 JB |
1673 | i = validate_interval_range (object, &start, &end, soft); |
1674 | if (NULL_INTERVAL_P (i)) | |
916a3119 | 1675 | return (NILP (value) || EQ (start, end)) ? Qnil : start; |
ad9c1940 JB |
1676 | s = XINT (start); |
1677 | e = XINT (end); | |
1678 | ||
1679 | while (! NULL_INTERVAL_P (i)) | |
1680 | { | |
1681 | if (i->position >= e) | |
1682 | break; | |
1f5e848a | 1683 | if (! EQ (textget (i->plist, property), value)) |
ad9c1940 JB |
1684 | { |
1685 | if (i->position > s) | |
1686 | s = i->position; | |
ad077db0 | 1687 | return make_number (s); |
ad9c1940 JB |
1688 | } |
1689 | i = next_interval (i); | |
1690 | } | |
1691 | return Qnil; | |
1692 | } | |
e138dfdc MB |
1693 | |
1694 | \f | |
1695 | /* Return the direction from which the text-property PROP would be | |
1696 | inherited by any new text inserted at POS: 1 if it would be | |
1697 | inherited from the char after POS, -1 if it would be inherited from | |
6f716644 SM |
1698 | the char before POS, and 0 if from neither. |
1699 | BUFFER can be either a buffer or nil (meaning current buffer). */ | |
e138dfdc MB |
1700 | |
1701 | int | |
971de7fb | 1702 | text_property_stickiness (Lisp_Object prop, Lisp_Object pos, Lisp_Object buffer) |
e138dfdc MB |
1703 | { |
1704 | Lisp_Object prev_pos, front_sticky; | |
1705 | int is_rear_sticky = 1, is_front_sticky = 0; /* defaults */ | |
cabf1cac | 1706 | Lisp_Object defalt = Fassq (prop, Vtext_property_default_nonsticky); |
e138dfdc | 1707 | |
6f716644 SM |
1708 | if (NILP (buffer)) |
1709 | XSETBUFFER (buffer, current_buffer); | |
1710 | ||
cabf1cac SM |
1711 | if (CONSP (defalt) && !NILP (XCDR (defalt))) |
1712 | is_rear_sticky = 0; | |
1713 | ||
6f716644 | 1714 | if (XINT (pos) > BUF_BEGV (XBUFFER (buffer))) |
e138dfdc MB |
1715 | /* Consider previous character. */ |
1716 | { | |
1717 | Lisp_Object rear_non_sticky; | |
1718 | ||
1719 | prev_pos = make_number (XINT (pos) - 1); | |
6f716644 | 1720 | rear_non_sticky = Fget_text_property (prev_pos, Qrear_nonsticky, buffer); |
e138dfdc MB |
1721 | |
1722 | if (!NILP (CONSP (rear_non_sticky) | |
1723 | ? Fmemq (prop, rear_non_sticky) | |
1724 | : rear_non_sticky)) | |
1725 | /* PROP is rear-non-sticky. */ | |
1726 | is_rear_sticky = 0; | |
1727 | } | |
506d2f9a CY |
1728 | else |
1729 | return 0; | |
e138dfdc MB |
1730 | |
1731 | /* Consider following character. */ | |
506d2f9a CY |
1732 | /* This signals an arg-out-of-range error if pos is outside the |
1733 | buffer's accessible range. */ | |
6f716644 | 1734 | front_sticky = Fget_text_property (pos, Qfront_sticky, buffer); |
e138dfdc MB |
1735 | |
1736 | if (EQ (front_sticky, Qt) | |
1737 | || (CONSP (front_sticky) | |
1738 | && !NILP (Fmemq (prop, front_sticky)))) | |
1739 | /* PROP is inherited from after. */ | |
1740 | is_front_sticky = 1; | |
1741 | ||
1742 | /* Simple cases, where the properties are consistent. */ | |
1743 | if (is_rear_sticky && !is_front_sticky) | |
1744 | return -1; | |
1745 | else if (!is_rear_sticky && is_front_sticky) | |
1746 | return 1; | |
1747 | else if (!is_rear_sticky && !is_front_sticky) | |
1748 | return 0; | |
1749 | ||
1750 | /* The stickiness properties are inconsistent, so we have to | |
1751 | disambiguate. Basically, rear-sticky wins, _except_ if the | |
1752 | property that would be inherited has a value of nil, in which case | |
1753 | front-sticky wins. */ | |
6f716644 SM |
1754 | if (XINT (pos) == BUF_BEGV (XBUFFER (buffer)) |
1755 | || NILP (Fget_text_property (prev_pos, prop, buffer))) | |
e138dfdc MB |
1756 | return 1; |
1757 | else | |
1758 | return -1; | |
1759 | } | |
1760 | ||
fcab51aa | 1761 | \f |
e2ad650c | 1762 | /* Copying properties between objects. */ |
15e4954b | 1763 | |
e2ad650c | 1764 | /* Add properties from START to END of SRC, starting at POS in DEST. |
c98da214 RS |
1765 | SRC and DEST may each refer to strings or buffers. |
1766 | Optional sixth argument PROP causes only that property to be copied. | |
1767 | Properties are copied to DEST as if by `add-text-properties'. | |
1768 | Return t if any property value actually changed, nil otherwise. */ | |
1769 | ||
1770 | /* Note this can GC when DEST is a buffer. */ | |
ad077db0 | 1771 | |
15e4954b | 1772 | Lisp_Object |
971de7fb | 1773 | copy_text_properties (Lisp_Object start, Lisp_Object end, Lisp_Object src, Lisp_Object pos, Lisp_Object dest, Lisp_Object prop) |
15e4954b JB |
1774 | { |
1775 | INTERVAL i; | |
1776 | Lisp_Object res; | |
1777 | Lisp_Object stuff; | |
1778 | Lisp_Object plist; | |
2452438f EZ |
1779 | EMACS_INT s, e, e2, p, len; |
1780 | int modified = 0; | |
c98da214 | 1781 | struct gcpro gcpro1, gcpro2; |
15e4954b JB |
1782 | |
1783 | i = validate_interval_range (src, &start, &end, soft); | |
1784 | if (NULL_INTERVAL_P (i)) | |
1785 | return Qnil; | |
1786 | ||
b7826503 | 1787 | CHECK_NUMBER_COERCE_MARKER (pos); |
15e4954b JB |
1788 | { |
1789 | Lisp_Object dest_start, dest_end; | |
1790 | ||
1791 | dest_start = pos; | |
e9c4fbcd | 1792 | XSETFASTINT (dest_end, XINT (dest_start) + (XINT (end) - XINT (start))); |
15e4954b JB |
1793 | /* Apply this to a copy of pos; it will try to increment its arguments, |
1794 | which we don't want. */ | |
1795 | validate_interval_range (dest, &dest_start, &dest_end, soft); | |
1796 | } | |
1797 | ||
1798 | s = XINT (start); | |
1799 | e = XINT (end); | |
1800 | p = XINT (pos); | |
1801 | ||
1802 | stuff = Qnil; | |
1803 | ||
1804 | while (s < e) | |
1805 | { | |
1806 | e2 = i->position + LENGTH (i); | |
1807 | if (e2 > e) | |
1808 | e2 = e; | |
1809 | len = e2 - s; | |
1810 | ||
1811 | plist = i->plist; | |
1812 | if (! NILP (prop)) | |
1813 | while (! NILP (plist)) | |
1814 | { | |
1815 | if (EQ (Fcar (plist), prop)) | |
1816 | { | |
1817 | plist = Fcons (prop, Fcons (Fcar (Fcdr (plist)), Qnil)); | |
1818 | break; | |
1819 | } | |
1820 | plist = Fcdr (Fcdr (plist)); | |
1821 | } | |
1822 | if (! NILP (plist)) | |
1823 | { | |
1824 | /* Must defer modifications to the interval tree in case src | |
cdf3e5a2 | 1825 | and dest refer to the same string or buffer. */ |
15e4954b JB |
1826 | stuff = Fcons (Fcons (make_number (p), |
1827 | Fcons (make_number (p + len), | |
1828 | Fcons (plist, Qnil))), | |
1829 | stuff); | |
1830 | } | |
1831 | ||
1832 | i = next_interval (i); | |
1833 | if (NULL_INTERVAL_P (i)) | |
1834 | break; | |
1835 | ||
1836 | p += len; | |
1837 | s = i->position; | |
1838 | } | |
1839 | ||
c98da214 RS |
1840 | GCPRO2 (stuff, dest); |
1841 | ||
15e4954b JB |
1842 | while (! NILP (stuff)) |
1843 | { | |
1844 | res = Fcar (stuff); | |
1845 | res = Fadd_text_properties (Fcar (res), Fcar (Fcdr (res)), | |
1846 | Fcar (Fcdr (Fcdr (res))), dest); | |
1847 | if (! NILP (res)) | |
1848 | modified++; | |
1849 | stuff = Fcdr (stuff); | |
1850 | } | |
1851 | ||
c98da214 RS |
1852 | UNGCPRO; |
1853 | ||
15e4954b JB |
1854 | return modified ? Qt : Qnil; |
1855 | } | |
9dd7eec6 GM |
1856 | |
1857 | ||
1858 | /* Return a list representing the text properties of OBJECT between | |
1859 | START and END. if PROP is non-nil, report only on that property. | |
1860 | Each result list element has the form (S E PLIST), where S and E | |
1861 | are positions in OBJECT and PLIST is a property list containing the | |
1862 | text properties of OBJECT between S and E. Value is nil if OBJECT | |
1863 | doesn't contain text properties between START and END. */ | |
1864 | ||
1865 | Lisp_Object | |
971de7fb | 1866 | text_property_list (Lisp_Object object, Lisp_Object start, Lisp_Object end, Lisp_Object prop) |
9dd7eec6 GM |
1867 | { |
1868 | struct interval *i; | |
1869 | Lisp_Object result; | |
9dd7eec6 GM |
1870 | |
1871 | result = Qnil; | |
81f6e55f | 1872 | |
9dd7eec6 GM |
1873 | i = validate_interval_range (object, &start, &end, soft); |
1874 | if (!NULL_INTERVAL_P (i)) | |
1875 | { | |
2452438f EZ |
1876 | EMACS_INT s = XINT (start); |
1877 | EMACS_INT e = XINT (end); | |
81f6e55f | 1878 | |
9dd7eec6 GM |
1879 | while (s < e) |
1880 | { | |
2452438f | 1881 | EMACS_INT interval_end, len; |
9dd7eec6 | 1882 | Lisp_Object plist; |
81f6e55f | 1883 | |
9dd7eec6 GM |
1884 | interval_end = i->position + LENGTH (i); |
1885 | if (interval_end > e) | |
1886 | interval_end = e; | |
1887 | len = interval_end - s; | |
81f6e55f | 1888 | |
9dd7eec6 GM |
1889 | plist = i->plist; |
1890 | ||
1891 | if (!NILP (prop)) | |
99784d63 SM |
1892 | for (; CONSP (plist); plist = Fcdr (XCDR (plist))) |
1893 | if (EQ (XCAR (plist), prop)) | |
9dd7eec6 | 1894 | { |
99784d63 | 1895 | plist = Fcons (prop, Fcons (Fcar (XCDR (plist)), Qnil)); |
9dd7eec6 GM |
1896 | break; |
1897 | } | |
1898 | ||
1899 | if (!NILP (plist)) | |
1900 | result = Fcons (Fcons (make_number (s), | |
1901 | Fcons (make_number (s + len), | |
1902 | Fcons (plist, Qnil))), | |
1903 | result); | |
81f6e55f | 1904 | |
9dd7eec6 GM |
1905 | i = next_interval (i); |
1906 | if (NULL_INTERVAL_P (i)) | |
1907 | break; | |
1908 | s = i->position; | |
1909 | } | |
1910 | } | |
81f6e55f | 1911 | |
9dd7eec6 GM |
1912 | return result; |
1913 | } | |
1914 | ||
1915 | ||
1916 | /* Add text properties to OBJECT from LIST. LIST is a list of triples | |
1917 | (START END PLIST), where START and END are positions and PLIST is a | |
1918 | property list containing the text properties to add. Adjust START | |
1919 | and END positions by DELTA before adding properties. Value is | |
1920 | non-zero if OBJECT was modified. */ | |
1921 | ||
1922 | int | |
971de7fb | 1923 | add_text_properties_from_list (Lisp_Object object, Lisp_Object list, Lisp_Object delta) |
9dd7eec6 GM |
1924 | { |
1925 | struct gcpro gcpro1, gcpro2; | |
1926 | int modified_p = 0; | |
81f6e55f | 1927 | |
9dd7eec6 | 1928 | GCPRO2 (list, object); |
81f6e55f | 1929 | |
9dd7eec6 GM |
1930 | for (; CONSP (list); list = XCDR (list)) |
1931 | { | |
1932 | Lisp_Object item, start, end, plist, tem; | |
81f6e55f | 1933 | |
9dd7eec6 GM |
1934 | item = XCAR (list); |
1935 | start = make_number (XINT (XCAR (item)) + XINT (delta)); | |
1936 | end = make_number (XINT (XCAR (XCDR (item))) + XINT (delta)); | |
1937 | plist = XCAR (XCDR (XCDR (item))); | |
81f6e55f | 1938 | |
9dd7eec6 GM |
1939 | tem = Fadd_text_properties (start, end, plist, object); |
1940 | if (!NILP (tem)) | |
1941 | modified_p = 1; | |
1942 | } | |
1943 | ||
1944 | UNGCPRO; | |
1945 | return modified_p; | |
1946 | } | |
1947 | ||
1948 | ||
1949 | ||
e398c61c CY |
1950 | /* Modify end-points of ranges in LIST destructively, and return the |
1951 | new list. LIST is a list as returned from text_property_list. | |
1952 | Discard properties that begin at or after NEW_END, and limit | |
1953 | end-points to NEW_END. */ | |
9dd7eec6 | 1954 | |
e398c61c | 1955 | Lisp_Object |
971de7fb | 1956 | extend_property_ranges (Lisp_Object list, Lisp_Object new_end) |
9dd7eec6 | 1957 | { |
e398c61c | 1958 | Lisp_Object prev = Qnil, head = list; |
2452438f | 1959 | EMACS_INT max = XINT (new_end); |
e398c61c CY |
1960 | |
1961 | for (; CONSP (list); prev = list, list = XCDR (list)) | |
9dd7eec6 | 1962 | { |
e398c61c | 1963 | Lisp_Object item, beg, end; |
81f6e55f | 1964 | |
9dd7eec6 | 1965 | item = XCAR (list); |
e398c61c | 1966 | beg = XCAR (item); |
9dd7eec6 GM |
1967 | end = XCAR (XCDR (item)); |
1968 | ||
e398c61c CY |
1969 | if (XINT (beg) >= max) |
1970 | { | |
1971 | /* The start-point is past the end of the new string. | |
1972 | Discard this property. */ | |
1973 | if (EQ (head, list)) | |
1974 | head = XCDR (list); | |
1975 | else | |
1976 | XSETCDR (prev, XCDR (list)); | |
1977 | } | |
1978 | else if (XINT (end) > max) | |
1979 | /* The end-point is past the end of the new string. */ | |
f3fbd155 | 1980 | XSETCAR (XCDR (item), new_end); |
9dd7eec6 | 1981 | } |
e398c61c CY |
1982 | |
1983 | return head; | |
9dd7eec6 GM |
1984 | } |
1985 | ||
1986 | ||
318d2fa8 RS |
1987 | \f |
1988 | /* Call the modification hook functions in LIST, each with START and END. */ | |
1989 | ||
1990 | static void | |
971de7fb | 1991 | call_mod_hooks (Lisp_Object list, Lisp_Object start, Lisp_Object end) |
318d2fa8 RS |
1992 | { |
1993 | struct gcpro gcpro1; | |
1994 | GCPRO1 (list); | |
1995 | while (!NILP (list)) | |
1996 | { | |
1997 | call2 (Fcar (list), start, end); | |
1998 | list = Fcdr (list); | |
1999 | } | |
2000 | UNGCPRO; | |
2001 | } | |
2002 | ||
96f90544 RS |
2003 | /* Check for read-only intervals between character positions START ... END, |
2004 | in BUF, and signal an error if we find one. | |
2005 | ||
2006 | Then check for any modification hooks in the range. | |
2007 | Create a list of all these hooks in lexicographic order, | |
2008 | eliminating consecutive extra copies of the same hook. Then call | |
2009 | those hooks in order, with START and END - 1 as arguments. */ | |
15e4954b | 2010 | |
318d2fa8 | 2011 | void |
d1dfb56c EZ |
2012 | verify_interval_modification (struct buffer *buf, |
2013 | EMACS_INT start, EMACS_INT end) | |
318d2fa8 RS |
2014 | { |
2015 | register INTERVAL intervals = BUF_INTERVALS (buf); | |
695f302f | 2016 | register INTERVAL i; |
318d2fa8 RS |
2017 | Lisp_Object hooks; |
2018 | register Lisp_Object prev_mod_hooks; | |
2019 | Lisp_Object mod_hooks; | |
2020 | struct gcpro gcpro1; | |
2021 | ||
2022 | hooks = Qnil; | |
2023 | prev_mod_hooks = Qnil; | |
2024 | mod_hooks = Qnil; | |
2025 | ||
2026 | interval_insert_behind_hooks = Qnil; | |
2027 | interval_insert_in_front_hooks = Qnil; | |
2028 | ||
2029 | if (NULL_INTERVAL_P (intervals)) | |
2030 | return; | |
2031 | ||
2032 | if (start > end) | |
2033 | { | |
2452438f | 2034 | EMACS_INT temp = start; |
318d2fa8 RS |
2035 | start = end; |
2036 | end = temp; | |
2037 | } | |
2038 | ||
2039 | /* For an insert operation, check the two chars around the position. */ | |
2040 | if (start == end) | |
2041 | { | |
7cb66899 | 2042 | INTERVAL prev = NULL; |
318d2fa8 RS |
2043 | Lisp_Object before, after; |
2044 | ||
2045 | /* Set I to the interval containing the char after START, | |
2046 | and PREV to the interval containing the char before START. | |
2047 | Either one may be null. They may be equal. */ | |
2048 | i = find_interval (intervals, start); | |
2049 | ||
2050 | if (start == BUF_BEGV (buf)) | |
2051 | prev = 0; | |
2052 | else if (i->position == start) | |
2053 | prev = previous_interval (i); | |
2054 | else if (i->position < start) | |
2055 | prev = i; | |
2056 | if (start == BUF_ZV (buf)) | |
2057 | i = 0; | |
2058 | ||
2059 | /* If Vinhibit_read_only is set and is not a list, we can | |
2060 | skip the read_only checks. */ | |
2061 | if (NILP (Vinhibit_read_only) || CONSP (Vinhibit_read_only)) | |
2062 | { | |
2063 | /* If I and PREV differ we need to check for the read-only | |
cdf3e5a2 | 2064 | property together with its stickiness. If either I or |
318d2fa8 RS |
2065 | PREV are 0, this check is all we need. |
2066 | We have to take special care, since read-only may be | |
2067 | indirectly defined via the category property. */ | |
2068 | if (i != prev) | |
2069 | { | |
2070 | if (! NULL_INTERVAL_P (i)) | |
2071 | { | |
2072 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2073 | |
318d2fa8 RS |
2074 | /* If interval I is read-only and read-only is |
2075 | front-sticky, inhibit insertion. | |
2076 | Check for read-only as well as category. */ | |
2077 | if (! NILP (after) | |
2078 | && NILP (Fmemq (after, Vinhibit_read_only))) | |
2079 | { | |
2080 | Lisp_Object tem; | |
2081 | ||
2082 | tem = textget (i->plist, Qfront_sticky); | |
2083 | if (TMEM (Qread_only, tem) | |
2084 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2085 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2086 | text_read_only (after); |
318d2fa8 RS |
2087 | } |
2088 | } | |
2089 | ||
2090 | if (! NULL_INTERVAL_P (prev)) | |
2091 | { | |
2092 | before = textget (prev->plist, Qread_only); | |
81f6e55f | 2093 | |
318d2fa8 RS |
2094 | /* If interval PREV is read-only and read-only isn't |
2095 | rear-nonsticky, inhibit insertion. | |
2096 | Check for read-only as well as category. */ | |
2097 | if (! NILP (before) | |
2098 | && NILP (Fmemq (before, Vinhibit_read_only))) | |
2099 | { | |
2100 | Lisp_Object tem; | |
2101 | ||
2102 | tem = textget (prev->plist, Qrear_nonsticky); | |
2103 | if (! TMEM (Qread_only, tem) | |
2104 | && (! NILP (Fplist_get (prev->plist,Qread_only)) | |
2105 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2106 | text_read_only (before); |
318d2fa8 RS |
2107 | } |
2108 | } | |
2109 | } | |
2110 | else if (! NULL_INTERVAL_P (i)) | |
2111 | { | |
2112 | after = textget (i->plist, Qread_only); | |
81f6e55f | 2113 | |
318d2fa8 RS |
2114 | /* If interval I is read-only and read-only is |
2115 | front-sticky, inhibit insertion. | |
2116 | Check for read-only as well as category. */ | |
2117 | if (! NILP (after) && NILP (Fmemq (after, Vinhibit_read_only))) | |
2118 | { | |
2119 | Lisp_Object tem; | |
2120 | ||
2121 | tem = textget (i->plist, Qfront_sticky); | |
2122 | if (TMEM (Qread_only, tem) | |
2123 | || (NILP (Fplist_get (i->plist, Qread_only)) | |
2124 | && TMEM (Qcategory, tem))) | |
bcf97349 | 2125 | text_read_only (after); |
318d2fa8 RS |
2126 | |
2127 | tem = textget (prev->plist, Qrear_nonsticky); | |
2128 | if (! TMEM (Qread_only, tem) | |
2129 | && (! NILP (Fplist_get (prev->plist, Qread_only)) | |
2130 | || ! TMEM (Qcategory, tem))) | |
bcf97349 | 2131 | text_read_only (after); |
318d2fa8 RS |
2132 | } |
2133 | } | |
2134 | } | |
2135 | ||
2136 | /* Run both insert hooks (just once if they're the same). */ | |
2137 | if (!NULL_INTERVAL_P (prev)) | |
2138 | interval_insert_behind_hooks | |
2139 | = textget (prev->plist, Qinsert_behind_hooks); | |
2140 | if (!NULL_INTERVAL_P (i)) | |
2141 | interval_insert_in_front_hooks | |
2142 | = textget (i->plist, Qinsert_in_front_hooks); | |
2143 | } | |
0ba7995b | 2144 | else |
318d2fa8 RS |
2145 | { |
2146 | /* Loop over intervals on or next to START...END, | |
2147 | collecting their hooks. */ | |
2148 | ||
2149 | i = find_interval (intervals, start); | |
2150 | do | |
2151 | { | |
2152 | if (! INTERVAL_WRITABLE_P (i)) | |
bcf97349 | 2153 | text_read_only (textget (i->plist, Qread_only)); |
318d2fa8 | 2154 | |
0ba7995b | 2155 | if (!inhibit_modification_hooks) |
318d2fa8 | 2156 | { |
0ba7995b GM |
2157 | mod_hooks = textget (i->plist, Qmodification_hooks); |
2158 | if (! NILP (mod_hooks) && ! EQ (mod_hooks, prev_mod_hooks)) | |
2159 | { | |
2160 | hooks = Fcons (mod_hooks, hooks); | |
2161 | prev_mod_hooks = mod_hooks; | |
2162 | } | |
318d2fa8 RS |
2163 | } |
2164 | ||
2165 | i = next_interval (i); | |
2166 | } | |
2167 | /* Keep going thru the interval containing the char before END. */ | |
2168 | while (! NULL_INTERVAL_P (i) && i->position < end); | |
2169 | ||
0ba7995b | 2170 | if (!inhibit_modification_hooks) |
318d2fa8 | 2171 | { |
0ba7995b GM |
2172 | GCPRO1 (hooks); |
2173 | hooks = Fnreverse (hooks); | |
2174 | while (! EQ (hooks, Qnil)) | |
2175 | { | |
2176 | call_mod_hooks (Fcar (hooks), make_number (start), | |
2177 | make_number (end)); | |
2178 | hooks = Fcdr (hooks); | |
2179 | } | |
2180 | UNGCPRO; | |
318d2fa8 | 2181 | } |
318d2fa8 RS |
2182 | } |
2183 | } | |
2184 | ||
96f90544 | 2185 | /* Run the interval hooks for an insertion on character range START ... END. |
318d2fa8 RS |
2186 | verify_interval_modification chose which hooks to run; |
2187 | this function is called after the insertion happens | |
2188 | so it can indicate the range of inserted text. */ | |
2189 | ||
2190 | void | |
971de7fb | 2191 | report_interval_modification (Lisp_Object start, Lisp_Object end) |
318d2fa8 RS |
2192 | { |
2193 | if (! NILP (interval_insert_behind_hooks)) | |
2e34157c | 2194 | call_mod_hooks (interval_insert_behind_hooks, start, end); |
318d2fa8 RS |
2195 | if (! NILP (interval_insert_in_front_hooks) |
2196 | && ! EQ (interval_insert_in_front_hooks, | |
2197 | interval_insert_behind_hooks)) | |
2e34157c | 2198 | call_mod_hooks (interval_insert_in_front_hooks, start, end); |
318d2fa8 RS |
2199 | } |
2200 | \f | |
d418ef42 | 2201 | void |
971de7fb | 2202 | syms_of_textprop (void) |
d418ef42 | 2203 | { |
29208e82 | 2204 | DEFVAR_LISP ("default-text-properties", Vdefault_text_properties, |
8c1a1077 PJ |
2205 | doc: /* Property-list used as default values. |
2206 | The value of a property in this list is seen as the value for every | |
2207 | character that does not have its own value for that property. */); | |
ad1b2f20 | 2208 | Vdefault_text_properties = Qnil; |
c7dd82a3 | 2209 | |
29208e82 | 2210 | DEFVAR_LISP ("char-property-alias-alist", Vchar_property_alias_alist, |
49d110a8 CW |
2211 | doc: /* Alist of alternative properties for properties without a value. |
2212 | Each element should look like (PROPERTY ALTERNATIVE1 ALTERNATIVE2...). | |
2213 | If a piece of text has no direct value for a particular property, then | |
2214 | this alist is consulted. If that property appears in the alist, then | |
2215 | the first non-nil value from the associated alternative properties is | |
2216 | returned. */); | |
2217 | Vchar_property_alias_alist = Qnil; | |
2218 | ||
29208e82 | 2219 | DEFVAR_LISP ("inhibit-point-motion-hooks", Vinhibit_point_motion_hooks, |
8c1a1077 PJ |
2220 | doc: /* If non-nil, don't run `point-left' and `point-entered' text properties. |
2221 | This also inhibits the use of the `intangible' text property. */); | |
688a5a0f | 2222 | Vinhibit_point_motion_hooks = Qnil; |
318d2fa8 | 2223 | |
abc2f676 | 2224 | DEFVAR_LISP ("text-property-default-nonsticky", |
29208e82 | 2225 | Vtext_property_default_nonsticky, |
22bcf204 | 2226 | doc: /* Alist of properties vs the corresponding non-stickiness. |
8c1a1077 PJ |
2227 | Each element has the form (PROPERTY . NONSTICKINESS). |
2228 | ||
2229 | If a character in a buffer has PROPERTY, new text inserted adjacent to | |
2230 | the character doesn't inherit PROPERTY if NONSTICKINESS is non-nil, | |
518c0b83 JB |
2231 | inherits it if NONSTICKINESS is nil. The `front-sticky' and |
2232 | `rear-nonsticky' properties of the character override NONSTICKINESS. */); | |
cabf1cac SM |
2233 | /* Text properties `syntax-table'and `display' should be nonsticky |
2234 | by default. */ | |
98ebf860 | 2235 | Vtext_property_default_nonsticky |
cabf1cac SM |
2236 | = Fcons (Fcons (intern_c_string ("syntax-table"), Qt), |
2237 | Fcons (Fcons (intern_c_string ("display"), Qt), Qnil)); | |
abc2f676 | 2238 | |
318d2fa8 RS |
2239 | staticpro (&interval_insert_behind_hooks); |
2240 | staticpro (&interval_insert_in_front_hooks); | |
2241 | interval_insert_behind_hooks = Qnil; | |
2242 | interval_insert_in_front_hooks = Qnil; | |
2243 | ||
81f6e55f | 2244 | |
d418ef42 JA |
2245 | /* Common attributes one might give text */ |
2246 | ||
cd3520a4 JB |
2247 | DEFSYM (Qforeground, "foreground"); |
2248 | DEFSYM (Qbackground, "background"); | |
2249 | DEFSYM (Qfont, "font"); | |
2250 | DEFSYM (Qstipple, "stipple"); | |
2251 | DEFSYM (Qunderline, "underline"); | |
2252 | DEFSYM (Qread_only, "read-only"); | |
2253 | DEFSYM (Qinvisible, "invisible"); | |
2254 | DEFSYM (Qintangible, "intangible"); | |
2255 | DEFSYM (Qcategory, "category"); | |
2256 | DEFSYM (Qlocal_map, "local-map"); | |
2257 | DEFSYM (Qfront_sticky, "front-sticky"); | |
2258 | DEFSYM (Qrear_nonsticky, "rear-nonsticky"); | |
2259 | DEFSYM (Qmouse_face, "mouse-face"); | |
2260 | DEFSYM (Qminibuffer_prompt, "minibuffer-prompt"); | |
d418ef42 JA |
2261 | |
2262 | /* Properties that text might use to specify certain actions */ | |
2263 | ||
cd3520a4 JB |
2264 | DEFSYM (Qmouse_left, "mouse-left"); |
2265 | DEFSYM (Qmouse_entered, "mouse-entered"); | |
2266 | DEFSYM (Qpoint_left, "point-left"); | |
2267 | DEFSYM (Qpoint_entered, "point-entered"); | |
d418ef42 JA |
2268 | |
2269 | defsubr (&Stext_properties_at); | |
5fbe2a44 | 2270 | defsubr (&Sget_text_property); |
eb769fd7 | 2271 | defsubr (&Sget_char_property); |
97a1bc63 | 2272 | defsubr (&Sget_char_property_and_overlay); |
fcab51aa RS |
2273 | defsubr (&Snext_char_property_change); |
2274 | defsubr (&Sprevious_char_property_change); | |
b7e047fb MB |
2275 | defsubr (&Snext_single_char_property_change); |
2276 | defsubr (&Sprevious_single_char_property_change); | |
d418ef42 | 2277 | defsubr (&Snext_property_change); |
9c79dd1b | 2278 | defsubr (&Snext_single_property_change); |
d418ef42 | 2279 | defsubr (&Sprevious_property_change); |
9c79dd1b | 2280 | defsubr (&Sprevious_single_property_change); |
d418ef42 | 2281 | defsubr (&Sadd_text_properties); |
d4b530ad | 2282 | defsubr (&Sput_text_property); |
d418ef42 JA |
2283 | defsubr (&Sset_text_properties); |
2284 | defsubr (&Sremove_text_properties); | |
11713b6d | 2285 | defsubr (&Sremove_list_of_text_properties); |
ad9c1940 JB |
2286 | defsubr (&Stext_property_any); |
2287 | defsubr (&Stext_property_not_all); | |
d418ef42 | 2288 | } |