1 /* SXEmacs routines to deal with char tables.
2 Copyright (C) 1992, 1995 Free Software Foundation, Inc.
3 Copyright (C) 1995 Sun Microsystems, Inc.
4 Copyright (C) 1995, 1996 Ben Wing.
5 Copyright (C) 1995, 1997, 1999 Electrotechnical Laboratory, JAPAN.
6 Licensed to the Free Software Foundation.
8 This file is part of SXEmacs
10 SXEmacs is free software: you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation, either version 3 of the License, or
13 (at your option) any later version.
15 SXEmacs is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 /* Synched up with: Mule 2.3. Not synched with FSF.
26 This file was written independently of the FSF implementation,
27 and is not compatible. */
31 Ben Wing: wrote, for 19.13 (Mule). Some category table stuff
32 loosely based on the original Mule.
33 Jareth Hein: fixed a couple of bugs in the implementation, and
34 added regex support for categories with check_category_at
44 Lisp_Object Qchar_tablep, Qchar_table;
46 Lisp_Object Vall_syntax_tables;
49 Lisp_Object Qcategory_table_p;
50 Lisp_Object Qcategory_designator_p;
51 Lisp_Object Qcategory_table_value_p;
53 Lisp_Object Vstandard_category_table;
55 /* Variables to determine word boundary. */
56 Lisp_Object Vword_combining_categories, Vword_separating_categories;
59 /* A char table maps from ranges of characters to values.
61 Implementing a general data structure that maps from arbitrary
62 ranges of numbers to values is tricky to do efficiently. As it
63 happens, it should suffice (and is usually more convenient, anyway)
64 when dealing with characters to restrict the sorts of ranges that
65 can be assigned values, as follows:
68 2) All characters in a charset.
69 3) All characters in a particular row of a charset, where a "row"
70 means all characters with the same first byte.
71 4) A particular character in a charset.
73 We use char tables to generalize the 256-element vectors now
74 littering the Emacs code.
76 Possible uses (all should be converted at some point):
82 5) keyboard-translate-table?
85 abstract type to generalize the Emacs vectors and Mule
86 vectors-of-vectors goo.
89 /************************************************************************/
90 /* Char Table object */
91 /************************************************************************/
95 static Lisp_Object mark_char_table_entry(Lisp_Object obj)
97 Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY(obj);
100 for (i = 0; i < 96; i++) {
101 mark_object(cte->level2[i]);
106 static int char_table_entry_equal(Lisp_Object obj1, Lisp_Object obj2, int depth)
108 Lisp_Char_Table_Entry *cte1 = XCHAR_TABLE_ENTRY(obj1);
109 Lisp_Char_Table_Entry *cte2 = XCHAR_TABLE_ENTRY(obj2);
112 for (i = 0; i < 96; i++)
114 (cte1->level2[i], cte2->level2[i], depth + 1))
120 static unsigned long char_table_entry_hash(Lisp_Object obj, int depth)
122 Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY(obj);
124 return internal_array_hash(cte->level2, 96, depth);
127 static const struct lrecord_description char_table_entry_description[] = {
128 {XD_LISP_OBJECT_ARRAY, offsetof(Lisp_Char_Table_Entry, level2), 96},
132 DEFINE_LRECORD_IMPLEMENTATION("char-table-entry", char_table_entry,
133 mark_char_table_entry, internal_object_printer,
134 0, char_table_entry_equal,
135 char_table_entry_hash,
136 char_table_entry_description,
137 Lisp_Char_Table_Entry);
140 static Lisp_Object mark_char_table(Lisp_Object obj)
142 Lisp_Char_Table *ct = XCHAR_TABLE(obj);
145 for (i = 0; i < NUM_ASCII_CHARS; i++)
146 mark_object(ct->ascii[i]);
148 for (i = 0; i < NUM_LEADING_BYTES; i++)
149 mark_object(ct->level1[i]);
151 return ct->mirror_table;
154 /* WARNING: All functions of this nature need to be written extremely
155 carefully to avoid crashes during GC. Cf. prune_specifiers()
156 and prune_weak_hash_tables(). */
158 void prune_syntax_tables(void)
160 Lisp_Object rest, prev = Qnil;
162 for (rest = Vall_syntax_tables;
163 !NILP(rest); rest = XCHAR_TABLE(rest)->next_table) {
164 if (!marked_p(rest)) {
165 /* This table is garbage. Remove it from the list. */
168 XCHAR_TABLE(rest)->next_table;
170 XCHAR_TABLE(prev)->next_table =
171 XCHAR_TABLE(rest)->next_table;
176 static Lisp_Object char_table_type_to_symbol(enum char_table_type type)
181 case CHAR_TABLE_TYPE_GENERIC:
183 case CHAR_TABLE_TYPE_SYNTAX:
185 case CHAR_TABLE_TYPE_DISPLAY:
187 case CHAR_TABLE_TYPE_CHAR:
190 case CHAR_TABLE_TYPE_CATEGORY:
196 static enum char_table_type symbol_to_char_table_type(Lisp_Object symbol)
198 CHECK_SYMBOL(symbol);
200 if (EQ(symbol, Qgeneric))
201 return CHAR_TABLE_TYPE_GENERIC;
202 if (EQ(symbol, Qsyntax))
203 return CHAR_TABLE_TYPE_SYNTAX;
204 if (EQ(symbol, Qdisplay))
205 return CHAR_TABLE_TYPE_DISPLAY;
206 if (EQ(symbol, Qchar))
207 return CHAR_TABLE_TYPE_CHAR;
209 if (EQ(symbol, Qcategory))
210 return CHAR_TABLE_TYPE_CATEGORY;
213 signal_simple_error("Unrecognized char table type", symbol);
214 return CHAR_TABLE_TYPE_GENERIC; /* not reached */
218 print_chartab_range(Emchar first, Emchar last, Lisp_Object val,
219 Lisp_Object printcharfun)
222 write_c_string(" (", printcharfun);
223 print_internal(make_char(first), printcharfun, 0);
224 write_c_string(" ", printcharfun);
225 print_internal(make_char(last), printcharfun, 0);
226 write_c_string(") ", printcharfun);
228 write_c_string(" ", printcharfun);
229 print_internal(make_char(first), printcharfun, 0);
230 write_c_string(" ", printcharfun);
232 print_internal(val, printcharfun, 1);
238 print_chartab_charset_row(Lisp_Object charset,
240 Lisp_Char_Table_Entry * cte, Lisp_Object printcharfun)
243 Lisp_Object cat = Qunbound;
246 for (i = 32; i < 128; i++) {
247 Lisp_Object pam = cte->level2[i - 32];
257 print_chartab_range(MAKE_CHAR
259 MAKE_CHAR(charset, i - 1,
263 print_chartab_range(MAKE_CHAR
264 (charset, row, first),
265 MAKE_CHAR(charset, row,
275 print_chartab_range(MAKE_CHAR(charset, first, 0),
276 MAKE_CHAR(charset, i - 1, 0),
279 print_chartab_range(MAKE_CHAR(charset, row, first),
280 MAKE_CHAR(charset, row, i - 1),
286 print_chartab_two_byte_charset(Lisp_Object charset,
287 Lisp_Char_Table_Entry * cte,
288 Lisp_Object printcharfun)
292 for (i = 32; i < 128; i++) {
293 Lisp_Object jen = cte->level2[i - 32];
295 if (!CHAR_TABLE_ENTRYP(jen)) {
296 write_c_string(" [", printcharfun);
297 print_internal(XCHARSET_NAME(charset), printcharfun, 0);
298 write_fmt_str(printcharfun, " %d] ", i);
299 print_internal(jen, printcharfun, 0);
301 print_chartab_charset_row(charset, i,
302 XCHAR_TABLE_ENTRY(jen),
310 print_char_table(Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
312 Lisp_Char_Table *ct = XCHAR_TABLE(obj);
313 Lisp_Object tmp_sym = char_table_type_to_symbol(ct->type);
315 write_fmt_string(printcharfun, "#s(char-table type %s data (",
316 string_data(symbol_name(XSYMBOL(tmp_sym))));
318 /* Now write out the ASCII/Control-1 stuff. */
322 Lisp_Object val = Qunbound;
324 for (i = 0; i < NUM_ASCII_CHARS; i++) {
331 if (!EQ(ct->ascii[i], val)) {
332 print_chartab_range(first, i - 1, val,
340 print_chartab_range(first, i - 1, val, printcharfun);
347 for (i = MIN_LEADING_BYTE;
348 i < MIN_LEADING_BYTE + NUM_LEADING_BYTES; i++) {
349 Lisp_Object ann = ct->level1[i - MIN_LEADING_BYTE];
350 Lisp_Object charset = CHARSET_BY_LEADING_BYTE(i);
352 if (!CHARSETP(charset) || i == LEADING_BYTE_ASCII
353 || i == LEADING_BYTE_CONTROL_1)
355 if (!CHAR_TABLE_ENTRYP(ann)) {
356 write_c_string(" ", printcharfun);
357 print_internal(XCHARSET_NAME(charset),
359 write_c_string(" ", printcharfun);
360 print_internal(ann, printcharfun, 0);
362 Lisp_Char_Table_Entry *cte =
363 XCHAR_TABLE_ENTRY(ann);
364 if (XCHARSET_DIMENSION(charset) == 1)
365 print_chartab_charset_row(charset, -1,
369 print_chartab_two_byte_charset(charset,
377 write_c_string("))", printcharfun);
380 static int char_table_equal(Lisp_Object obj1, Lisp_Object obj2, int depth)
382 Lisp_Char_Table *ct1 = XCHAR_TABLE(obj1);
383 Lisp_Char_Table *ct2 = XCHAR_TABLE(obj2);
386 if (CHAR_TABLE_TYPE(ct1) != CHAR_TABLE_TYPE(ct2))
389 for (i = 0; i < NUM_ASCII_CHARS; i++)
390 if (!internal_equal(ct1->ascii[i], ct2->ascii[i], depth + 1))
394 for (i = 0; i < NUM_LEADING_BYTES; i++)
395 if (!internal_equal(ct1->level1[i], ct2->level1[i], depth + 1))
402 static unsigned long char_table_hash(Lisp_Object obj, int depth)
404 Lisp_Char_Table *ct = XCHAR_TABLE(obj);
405 unsigned long hashval = internal_array_hash(ct->ascii, NUM_ASCII_CHARS,
408 hashval = HASH2(hashval,
409 internal_array_hash(ct->level1, NUM_LEADING_BYTES,
415 static const struct lrecord_description char_table_description[] = {
416 {XD_LISP_OBJECT_ARRAY, offsetof(Lisp_Char_Table, ascii),
419 {XD_LISP_OBJECT_ARRAY, offsetof(Lisp_Char_Table, level1),
422 {XD_LISP_OBJECT, offsetof(Lisp_Char_Table, mirror_table)},
423 {XD_LO_LINK, offsetof(Lisp_Char_Table, next_table)},
427 DEFINE_LRECORD_IMPLEMENTATION("char-table", char_table,
428 mark_char_table, print_char_table, 0,
429 char_table_equal, char_table_hash,
430 char_table_description, Lisp_Char_Table);
432 DEFUN("char-table-p", Fchar_table_p, 1, 1, 0, /*
433 Return non-nil if OBJECT is a char table.
435 A char table is a table that maps characters (or ranges of characters)
436 to values. Char tables are specialized for characters, only allowing
437 particular sorts of ranges to be assigned values. Although this
438 loses in generality, it makes for extremely fast (constant-time)
439 lookups, and thus is feasible for applications that do an extremely
440 large number of lookups (e.g. scanning a buffer for a character in
441 a particular syntax, where a lookup in the syntax table must occur
444 When Mule support exists, the types of ranges that can be assigned
449 -- a single row in a two-octet charset
450 -- a single character
452 When Mule support is not present, the types of ranges that can be
456 -- a single character
458 To create a char table, use `make-char-table'.
459 To modify a char table, use `put-char-table' or `remove-char-table'.
460 To retrieve the value for a particular character, use `get-char-table'.
461 See also `map-char-table', `clear-char-table', `copy-char-table',
462 `valid-char-table-type-p', `char-table-type-list',
463 `valid-char-table-value-p', and `check-char-table-value'.
467 return CHAR_TABLEP(object) ? Qt : Qnil;
470 DEFUN("char-table-type-list", Fchar_table_type_list, 0, 0, 0, /*
471 Return a list of the recognized char table types.
472 See `valid-char-table-type-p'.
477 return list5(Qchar, Qcategory, Qdisplay, Qgeneric, Qsyntax);
479 return list4(Qchar, Qdisplay, Qgeneric, Qsyntax);
483 DEFUN("valid-char-table-type-p", Fvalid_char_table_type_p, 1, 1, 0, /*
484 Return t if TYPE if a recognized char table type.
486 Each char table type is used for a different purpose and allows different
487 sorts of values. The different char table types are
490 Used for category tables, which specify the regexp categories
491 that a character is in. The valid values are nil or a
492 bit vector of 95 elements. Higher-level Lisp functions are
493 provided for working with category tables. Currently categories
494 and category tables only exist when Mule support is present.
496 A generalized char table, for mapping from one character to
497 another. Used for case tables, syntax matching tables,
498 `keyboard-translate-table', etc. The valid values are characters.
500 An even more generalized char table, for mapping from a
501 character to anything.
503 Used for display tables, which specify how a particular character
504 is to appear when displayed. #### Not yet implemented.
506 Used for syntax tables, which specify the syntax of a particular
507 character. Higher-level Lisp functions are provided for
508 working with syntax tables. The valid values are integers.
513 return (EQ(type, Qchar) ||
515 EQ(type, Qcategory) ||
517 EQ(type, Qdisplay) ||
518 EQ(type, Qgeneric) || EQ(type, Qsyntax)) ? Qt : Qnil;
521 DEFUN("char-table-type", Fchar_table_type, 1, 1, 0, /*
522 Return the type of CHAR-TABLE.
523 See `valid-char-table-type-p'.
527 CHECK_CHAR_TABLE(char_table);
528 return char_table_type_to_symbol(XCHAR_TABLE(char_table)->type);
531 void fill_char_table(Lisp_Char_Table * ct, Lisp_Object value)
535 for (i = 0; i < NUM_ASCII_CHARS; i++)
536 ct->ascii[i] = value;
538 for (i = 0; i < NUM_LEADING_BYTES; i++)
539 ct->level1[i] = value;
542 if (ct->type == CHAR_TABLE_TYPE_SYNTAX)
543 update_syntax_table(ct);
546 DEFUN("reset-char-table", Freset_char_table, 1, 1, 0, /*
547 Reset CHAR-TABLE to its default state.
553 CHECK_CHAR_TABLE(char_table);
554 ct = XCHAR_TABLE(char_table);
557 case CHAR_TABLE_TYPE_CHAR:
558 fill_char_table(ct, make_char(0));
560 case CHAR_TABLE_TYPE_DISPLAY:
561 case CHAR_TABLE_TYPE_GENERIC:
563 case CHAR_TABLE_TYPE_CATEGORY:
565 fill_char_table(ct, Qnil);
568 case CHAR_TABLE_TYPE_SYNTAX:
569 fill_char_table(ct, make_int(Sinherit));
579 DEFUN("make-char-table", Fmake_char_table, 1, 1, 0, /*
580 Return a new, empty char table of type TYPE.
581 Currently recognized types are 'char, 'category, 'display, 'generic,
582 and 'syntax. See `valid-char-table-type-p'.
588 enum char_table_type ty = symbol_to_char_table_type(type);
590 ct = alloc_lcrecord_type(Lisp_Char_Table, &lrecord_char_table);
592 if (ty == CHAR_TABLE_TYPE_SYNTAX) {
593 ct->mirror_table = Fmake_char_table(Qgeneric);
594 fill_char_table(XCHAR_TABLE(ct->mirror_table),
597 ct->mirror_table = Qnil;
598 ct->next_table = Qnil;
599 XSETCHAR_TABLE(obj, ct);
600 if (ty == CHAR_TABLE_TYPE_SYNTAX) {
601 ct->next_table = Vall_syntax_tables;
602 Vall_syntax_tables = obj;
604 Freset_char_table(obj);
610 static Lisp_Object make_char_table_entry(Lisp_Object initval)
614 Lisp_Char_Table_Entry *cte =
615 alloc_lcrecord_type(Lisp_Char_Table_Entry,
616 &lrecord_char_table_entry);
618 for (i = 0; i < 96; i++)
619 cte->level2[i] = initval;
621 XSETCHAR_TABLE_ENTRY(obj, cte);
625 static Lisp_Object copy_char_table_entry(Lisp_Object entry)
627 Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY(entry);
630 Lisp_Char_Table_Entry *ctenew =
631 alloc_lcrecord_type(Lisp_Char_Table_Entry,
632 &lrecord_char_table_entry);
634 for (i = 0; i < 96; i++) {
635 Lisp_Object new = cte->level2[i];
636 if (CHAR_TABLE_ENTRYP(new))
637 ctenew->level2[i] = copy_char_table_entry(new);
639 ctenew->level2[i] = new;
642 XSETCHAR_TABLE_ENTRY(obj, ctenew);
648 DEFUN("copy-char-table", Fcopy_char_table, 1, 1, 0, /*
649 Return a new char table which is a copy of CHAR-TABLE.
650 It will contain the same values for the same characters and ranges
651 as CHAR-TABLE. The values will not themselves be copied.
655 Lisp_Char_Table *ct, *ctnew;
659 CHECK_CHAR_TABLE(char_table);
660 ct = XCHAR_TABLE(char_table);
661 ctnew = alloc_lcrecord_type(Lisp_Char_Table, &lrecord_char_table);
662 ctnew->type = ct->type;
664 for (i = 0; i < NUM_ASCII_CHARS; i++) {
665 Lisp_Object new = ct->ascii[i];
667 assert(!(CHAR_TABLE_ENTRYP(new)));
669 ctnew->ascii[i] = new;
674 for (i = 0; i < NUM_LEADING_BYTES; i++) {
675 Lisp_Object new = ct->level1[i];
676 if (CHAR_TABLE_ENTRYP(new))
677 ctnew->level1[i] = copy_char_table_entry(new);
679 ctnew->level1[i] = new;
684 if (CHAR_TABLEP(ct->mirror_table))
685 ctnew->mirror_table = Fcopy_char_table(ct->mirror_table);
687 ctnew->mirror_table = ct->mirror_table;
688 ctnew->next_table = Qnil;
689 XSETCHAR_TABLE(obj, ctnew);
690 if (ctnew->type == CHAR_TABLE_TYPE_SYNTAX) {
691 ctnew->next_table = Vall_syntax_tables;
692 Vall_syntax_tables = obj;
698 decode_char_table_range(Lisp_Object range, struct chartab_range *outrange)
701 outrange->type = CHARTAB_RANGE_ALL;
702 else if (CHAR_OR_CHAR_INTP(range)) {
703 outrange->type = CHARTAB_RANGE_CHAR;
704 outrange->ch = XCHAR_OR_CHAR_INT(range);
708 signal_simple_error("Range must be t or a character", range);
710 else if (VECTORP(range)) {
711 Lisp_Vector *vec = XVECTOR(range);
712 Lisp_Object *elts = vector_data(vec);
713 if (vector_length(vec) != 2)
715 ("Length of charset row vector must be 2", range);
716 outrange->type = CHARTAB_RANGE_ROW;
717 outrange->charset = Fget_charset(elts[0]);
719 outrange->row = XINT(elts[1]);
720 switch (XCHARSET_TYPE(outrange->charset)) {
721 case CHARSET_TYPE_94:
722 case CHARSET_TYPE_96:
724 ("Charset in row vector must be multi-byte",
726 case CHARSET_TYPE_94X94:
727 check_int_range(outrange->row, 33, 126);
729 case CHARSET_TYPE_96X96:
730 check_int_range(outrange->row, 32, 127);
736 if (!CHARSETP(range) && !SYMBOLP(range))
738 ("Char table range must be t, charset, char, or vector",
740 outrange->type = CHARTAB_RANGE_CHARSET;
741 outrange->charset = Fget_charset(range);
748 /* called from CHAR_TABLE_VALUE(). */
750 get_non_ascii_char_table_value(Lisp_Char_Table * ct, int leading_byte, Emchar c)
753 Lisp_Object charset = CHARSET_BY_LEADING_BYTE(leading_byte);
756 BREAKUP_CHAR_1_UNSAFE(c, charset, byte1, byte2);
757 val = ct->level1[leading_byte - MIN_LEADING_BYTE];
758 if (CHAR_TABLE_ENTRYP(val)) {
759 Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY(val);
760 val = cte->level2[byte1 - 32];
761 if (CHAR_TABLE_ENTRYP(val)) {
762 cte = XCHAR_TABLE_ENTRY(val);
764 val = cte->level2[byte2 - 32];
765 assert(!CHAR_TABLE_ENTRYP(val));
774 Lisp_Object get_char_table(Emchar ch, Lisp_Char_Table * ct)
782 BREAKUP_CHAR(ch, charset, byte1, byte2);
784 if (EQ(charset, Vcharset_ascii))
785 val = ct->ascii[byte1];
786 else if (EQ(charset, Vcharset_control_1))
787 val = ct->ascii[byte1 + 128];
790 XCHARSET_LEADING_BYTE(charset) - MIN_LEADING_BYTE;
791 val = ct->level1[lb];
792 if (CHAR_TABLE_ENTRYP(val)) {
793 Lisp_Char_Table_Entry *cte =
794 XCHAR_TABLE_ENTRY(val);
795 val = cte->level2[byte1 - 32];
796 if (CHAR_TABLE_ENTRYP(val)) {
797 cte = XCHAR_TABLE_ENTRY(val);
799 val = cte->level2[byte2 - 32];
800 assert(!CHAR_TABLE_ENTRYP(val));
808 return ct->ascii[(unsigned char)ch];
809 #endif /* not MULE */
812 DEFUN("get-char-table", Fget_char_table, 2, 2, 0, /*
813 Find value for CHARACTER in CHAR-TABLE.
815 (character, char_table))
817 CHECK_CHAR_TABLE(char_table);
818 CHECK_CHAR_COERCE_INT(character);
820 return get_char_table(XCHAR(character), XCHAR_TABLE(char_table));
823 DEFUN("get-range-char-table", Fget_range_char_table, 2, 3, 0, /*
824 Find value for a range in CHAR-TABLE.
825 If there is more than one value, return MULTI (defaults to nil).
827 (range, char_table, multi))
830 struct chartab_range rainj;
832 if (CHAR_OR_CHAR_INTP(range))
833 return Fget_char_table(range, char_table);
834 CHECK_CHAR_TABLE(char_table);
835 ct = XCHAR_TABLE(char_table);
837 decode_char_table_range(range, &rainj);
838 switch (rainj.type) {
839 case CHARTAB_RANGE_ALL:
842 Lisp_Object first = ct->ascii[0];
844 for (i = 1; i < NUM_ASCII_CHARS; i++)
845 if (!EQ(first, ct->ascii[i]))
849 for (i = MIN_LEADING_BYTE;
850 i < MIN_LEADING_BYTE + NUM_LEADING_BYTES; i++) {
851 Lisp_Object foo = CHARSET_BY_LEADING_BYTE(i);
853 || i == LEADING_BYTE_ASCII
854 || i == LEADING_BYTE_CONTROL_1) {
858 (first, ct->level1[i - MIN_LEADING_BYTE])) {
868 case CHARTAB_RANGE_CHARSET:
869 if (EQ(rainj.charset, Vcharset_ascii)) {
871 Lisp_Object first = ct->ascii[0];
873 for (i = 1; i < 128; i++)
874 if (!EQ(first, ct->ascii[i]))
879 if (EQ(rainj.charset, Vcharset_control_1)) {
881 Lisp_Object first = ct->ascii[128];
883 for (i = 129; i < 160; i++)
884 if (!EQ(first, ct->ascii[i]))
891 ct->level1[XCHARSET_LEADING_BYTE(rainj.charset) -
893 if (CHAR_TABLE_ENTRYP(val))
898 case CHARTAB_RANGE_ROW:
901 ct->level1[XCHARSET_LEADING_BYTE(rainj.charset) -
903 if (!CHAR_TABLE_ENTRYP(val))
905 val = XCHAR_TABLE_ENTRY(val)->level2[rainj.row - 32];
906 if (CHAR_TABLE_ENTRYP(val))
912 case CHARTAB_RANGE_CHAR:
913 #endif /* not MULE */
919 return Qnil; /* not reached */
923 check_valid_char_table_value(Lisp_Object value, enum char_table_type type,
927 case CHAR_TABLE_TYPE_SYNTAX:
928 if (!ERRB_EQ(errb, ERROR_ME))
929 return INTP(value) || (CONSP(value) && INTP(XCAR(value))
931 CHAR_OR_CHAR_INTP(XCDR(value)));
933 Lisp_Object cdr = XCDR(value);
934 CHECK_INT(XCAR(value));
935 CHECK_CHAR_COERCE_INT(cdr);
941 case CHAR_TABLE_TYPE_CATEGORY:
942 if (!ERRB_EQ(errb, ERROR_ME))
943 return CATEGORY_TABLE_VALUEP(value);
944 CHECK_CATEGORY_TABLE_VALUE(value);
948 case CHAR_TABLE_TYPE_GENERIC:
951 case CHAR_TABLE_TYPE_DISPLAY:
953 maybe_signal_simple_error
954 ("Display char tables not yet implemented", value,
958 case CHAR_TABLE_TYPE_CHAR:
959 if (!ERRB_EQ(errb, ERROR_ME))
960 return CHAR_OR_CHAR_INTP(value);
961 CHECK_CHAR_COERCE_INT(value);
968 return 0; /* not reached */
972 canonicalize_char_table_value(Lisp_Object value, enum char_table_type type)
975 case CHAR_TABLE_TYPE_SYNTAX:
977 Lisp_Object car = XCAR(value);
978 Lisp_Object cdr = XCDR(value);
979 CHECK_CHAR_COERCE_INT(cdr);
980 return Fcons(car, cdr);
983 case CHAR_TABLE_TYPE_CHAR:
984 CHECK_CHAR_COERCE_INT(value);
987 case CHAR_TABLE_TYPE_GENERIC:
988 case CHAR_TABLE_TYPE_CATEGORY:
989 case CHAR_TABLE_TYPE_DISPLAY:
996 DEFUN("valid-char-table-value-p", Fvalid_char_table_value_p, 2, 2, 0, /*
997 Return non-nil if VALUE is a valid value for CHAR-TABLE-TYPE.
999 (value, char_table_type))
1001 enum char_table_type type = symbol_to_char_table_type(char_table_type);
1003 return check_valid_char_table_value(value, type,
1004 ERROR_ME_NOT) ? Qt : Qnil;
1007 DEFUN("check-valid-char-table-value", Fcheck_valid_char_table_value, 2, 2, 0, /*
1008 Signal an error if VALUE is not a valid value for CHAR-TABLE-TYPE.
1010 (value, char_table_type))
1012 enum char_table_type type = symbol_to_char_table_type(char_table_type);
1014 check_valid_char_table_value(value, type, ERROR_ME);
1018 /* Assign VAL to all characters in RANGE in char table CT. */
1021 put_char_table(Lisp_Char_Table * ct, struct chartab_range *range,
1024 switch (range->type) {
1025 case CHARTAB_RANGE_ALL:
1026 fill_char_table(ct, val);
1027 /* avoid the duplicate call to update_syntax_table() below,
1028 since fill_char_table() also did that. */
1032 case CHARTAB_RANGE_CHARSET:
1033 if (EQ(range->charset, Vcharset_ascii)) {
1035 for (i = 0; i < 128; i++)
1037 } else if (EQ(range->charset, Vcharset_control_1)) {
1039 for (i = 128; i < 160; i++)
1043 XCHARSET_LEADING_BYTE(range->charset) -
1045 ct->level1[lb] = val;
1049 case CHARTAB_RANGE_ROW:
1051 Lisp_Char_Table_Entry *cte;
1053 XCHARSET_LEADING_BYTE(range->charset) -
1055 /* make sure that there is a separate entry for the
1057 if (!CHAR_TABLE_ENTRYP(ct->level1[lb]))
1059 make_char_table_entry(ct->level1[lb]);
1060 cte = XCHAR_TABLE_ENTRY(ct->level1[lb]);
1061 cte->level2[range->row - 32] = val;
1066 case CHARTAB_RANGE_CHAR: {
1068 Lisp_Object charset;
1071 BREAKUP_CHAR(range->ch, charset, byte1, byte2);
1072 if (EQ(charset, Vcharset_ascii))
1073 ct->ascii[byte1] = val;
1074 else if (EQ(charset, Vcharset_control_1))
1075 ct->ascii[byte1 + 128] = val;
1077 Lisp_Char_Table_Entry *cte;
1079 XCHARSET_LEADING_BYTE(charset) -
1081 /* make sure that there is a separate entry for the
1083 if (!CHAR_TABLE_ENTRYP(ct->level1[lb]))
1085 make_char_table_entry(ct->
1087 cte = XCHAR_TABLE_ENTRY(ct->level1[lb]);
1088 /* now CTE is a char table entry for the charset;
1089 each entry is for a single row (or character of
1090 a one-octet charset). */
1091 if (XCHARSET_DIMENSION(charset) == 1)
1092 cte->level2[byte1 - 32] = val;
1094 /* assigning to one character in a two-octet
1096 /* make sure that the charset row contains a
1097 separate entry for each character. */
1098 if (!CHAR_TABLE_ENTRYP
1099 (cte->level2[byte1 - 32]))
1100 cte->level2[byte1 - 32] =
1101 make_char_table_entry(cte->
1106 cte = XCHAR_TABLE_ENTRY(cte->
1107 level2[byte1 - 32]);
1108 cte->level2[byte2 - 32] = val;
1111 #else /* not MULE */
1112 ct->ascii[(unsigned char)(range->ch)] = val;
1114 #endif /* not MULE */
1117 /* shouldnt happen should it? */
1121 if (ct->type == CHAR_TABLE_TYPE_SYNTAX) {
1122 update_syntax_table(ct);
1127 DEFUN("put-char-table", Fput_char_table, 3, 3, 0, /*
1128 Set the value for chars in RANGE to be VALUE in CHAR-TABLE.
1130 RANGE specifies one or more characters to be affected and should be
1131 one of the following:
1133 -- t (all characters are affected)
1134 -- A charset (only allowed when Mule support is present)
1135 -- A vector of two elements: a two-octet charset and a row number
1136 (only allowed when Mule support is present)
1137 -- A single character
1139 VALUE must be a value appropriate for the type of CHAR-TABLE.
1140 See `valid-char-table-type-p'.
1142 (range, value, char_table))
1144 Lisp_Char_Table *ct;
1145 struct chartab_range rainj;
1147 CHECK_CHAR_TABLE(char_table);
1148 ct = XCHAR_TABLE(char_table);
1149 check_valid_char_table_value(value, ct->type, ERROR_ME);
1150 decode_char_table_range(range, &rainj);
1151 value = canonicalize_char_table_value(value, ct->type);
1152 put_char_table(ct, &rainj, value);
1156 /* Map FN over the ASCII chars in CT. */
1159 map_over_charset_ascii(Lisp_Char_Table * ct,
1160 int (*fn) (struct chartab_range * range,
1161 Lisp_Object val, void *arg), void *arg)
1163 struct chartab_range rainj;
1172 rainj.type = CHARTAB_RANGE_CHAR;
1174 for (i = start, retval = 0; i < stop && retval == 0; i++) {
1175 rainj.ch = (Emchar) i;
1176 retval = (fn) (&rainj, ct->ascii[i], arg);
1184 /* Map FN over the Control-1 chars in CT. */
1187 map_over_charset_control_1(Lisp_Char_Table * ct,
1188 int (*fn) (struct chartab_range * range,
1189 Lisp_Object val, void *arg), void *arg)
1191 struct chartab_range rainj;
1194 int stop = start + 32;
1196 rainj.type = CHARTAB_RANGE_CHAR;
1198 for (i = start, retval = 0; i < stop && retval == 0; i++) {
1199 rainj.ch = (Emchar) (i);
1200 retval = (fn) (&rainj, ct->ascii[i], arg);
1206 /* Map FN over the row ROW of two-byte charset CHARSET.
1207 There must be a separate value for that row in the char table.
1208 CTE specifies the char table entry for CHARSET. */
1211 map_over_charset_row(Lisp_Char_Table_Entry * cte,
1212 Lisp_Object charset, int row,
1213 int (*fn) (struct chartab_range * range,
1214 Lisp_Object val, void *arg), void *arg)
1216 Lisp_Object val = cte->level2[row - 32];
1218 if (!CHAR_TABLE_ENTRYP(val)) {
1219 struct chartab_range rainj;
1221 rainj.type = CHARTAB_RANGE_ROW;
1222 rainj.charset = charset;
1224 return (fn) (&rainj, val, arg);
1226 struct chartab_range rainj;
1228 int charset94_p = (XCHARSET_CHARS(charset) == 94);
1229 int start = charset94_p ? 33 : 32;
1230 int stop = charset94_p ? 127 : 128;
1232 cte = XCHAR_TABLE_ENTRY(val);
1234 rainj.type = CHARTAB_RANGE_CHAR;
1236 for (i = start, retval = 0; i < stop && retval == 0; i++) {
1237 rainj.ch = MAKE_CHAR(charset, row, i);
1238 retval = (fn) (&rainj, cte->level2[i - 32], arg);
1245 map_over_other_charset(Lisp_Char_Table * ct, int lb,
1246 int (*fn) (struct chartab_range * range,
1247 Lisp_Object val, void *arg), void *arg)
1249 Lisp_Object val = ct->level1[lb - MIN_LEADING_BYTE];
1250 Lisp_Object charset = CHARSET_BY_LEADING_BYTE(lb);
1252 if (!CHARSETP(charset)
1253 || lb == LEADING_BYTE_ASCII || lb == LEADING_BYTE_CONTROL_1)
1256 if (!CHAR_TABLE_ENTRYP(val)) {
1257 struct chartab_range rainj;
1259 rainj.type = CHARTAB_RANGE_CHARSET;
1260 rainj.charset = charset;
1261 return (fn) (&rainj, val, arg);
1265 Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY(val);
1266 int charset94_p = (XCHARSET_CHARS(charset) == 94);
1267 int start = charset94_p ? 33 : 32;
1268 int stop = charset94_p ? 127 : 128;
1271 if (XCHARSET_DIMENSION(charset) == 1) {
1272 struct chartab_range rainj;
1273 rainj.type = CHARTAB_RANGE_CHAR;
1275 for (i = start, retval = 0; i < stop && retval == 0;
1277 rainj.ch = MAKE_CHAR(charset, i, 0);
1279 (fn) (&rainj, cte->level2[i - 32], arg);
1282 for (i = start, retval = 0; i < stop && retval == 0;
1285 map_over_charset_row(cte, charset, i, fn,
1295 /* Map FN (with client data ARG) over range RANGE in char table CT.
1296 Mapping stops the first time FN returns non-zero, and that value
1297 becomes the return value of map_char_table(). */
1300 map_char_table(Lisp_Char_Table * ct,
1301 struct chartab_range *range,
1302 int (*fn) (struct chartab_range * range,
1303 Lisp_Object val, void *arg), void *arg)
1305 switch (range->type) {
1306 case CHARTAB_RANGE_ALL:
1310 retval = map_over_charset_ascii(ct, fn, arg);
1314 retval = map_over_charset_control_1(ct, fn, arg);
1319 int start = MIN_LEADING_BYTE;
1320 int stop = start + NUM_LEADING_BYTES;
1322 for (i = start, retval = 0;
1323 i < stop && retval == 0; i++) {
1325 map_over_other_charset(ct, i, fn,
1334 case CHARTAB_RANGE_CHARSET:
1335 return map_over_other_charset(ct,
1336 XCHARSET_LEADING_BYTE(range->
1340 case CHARTAB_RANGE_ROW:
1343 ct->level1[XCHARSET_LEADING_BYTE(range->charset) -
1345 if (!CHAR_TABLE_ENTRYP(val)) {
1346 struct chartab_range rainj;
1348 rainj.type = CHARTAB_RANGE_ROW;
1349 rainj.charset = range->charset;
1350 rainj.row = range->row;
1351 return (fn) (&rainj, val, arg);
1354 map_over_charset_row(XCHAR_TABLE_ENTRY(val),
1356 range->row, fn, arg);
1360 case CHARTAB_RANGE_CHAR:
1362 Emchar ch = range->ch;
1363 Lisp_Object val = CHAR_TABLE_VALUE_UNSAFE(ct, ch);
1364 struct chartab_range rainj;
1366 rainj.type = CHARTAB_RANGE_CHAR;
1368 return (fn) (&rainj, val, arg);
1378 struct slow_map_char_table_arg {
1379 Lisp_Object function;
1384 slow_map_char_table_fun(struct chartab_range *range, Lisp_Object val, void *arg)
1386 Lisp_Object ranjarg = Qnil;
1387 struct slow_map_char_table_arg *closure =
1388 (struct slow_map_char_table_arg *)arg;
1390 switch (range->type) {
1391 case CHARTAB_RANGE_ALL:
1396 case CHARTAB_RANGE_CHARSET:
1397 ranjarg = XCHARSET_NAME(range->charset);
1400 case CHARTAB_RANGE_ROW:
1401 ranjarg = vector2(XCHARSET_NAME(range->charset),
1402 make_int(range->row));
1405 case CHARTAB_RANGE_CHAR:
1406 ranjarg = make_char(range->ch);
1412 closure->retval = call2(closure->function, ranjarg, val);
1413 return !NILP(closure->retval);
1416 DEFUN("map-char-table", Fmap_char_table, 2, 3, 0, /*
1417 Map FUNCTION over entries in CHAR-TABLE, calling it with two args,
1418 each key and value in the table.
1420 RANGE specifies a subrange to map over and is in the same format as
1421 the RANGE argument to `put-range-table'. If omitted or t, it defaults to
1424 (function, char_table, range))
1426 Lisp_Char_Table *ct;
1427 struct slow_map_char_table_arg slarg;
1428 struct gcpro gcpro1, gcpro2;
1429 struct chartab_range rainj;
1431 CHECK_CHAR_TABLE(char_table);
1432 ct = XCHAR_TABLE(char_table);
1435 decode_char_table_range(range, &rainj);
1436 slarg.function = function;
1437 slarg.retval = Qnil;
1438 GCPRO2(slarg.function, slarg.retval);
1439 map_char_table(ct, &rainj, slow_map_char_table_fun, &slarg);
1442 return slarg.retval;
1445 /************************************************************************/
1446 /* Char table read syntax */
1447 /************************************************************************/
1450 chartab_type_validate(Lisp_Object keyword, Lisp_Object value,
1451 Error_behavior errb)
1453 /* #### should deal with ERRB */
1454 symbol_to_char_table_type(value);
1459 chartab_data_validate(Lisp_Object keyword, Lisp_Object value,
1460 Error_behavior errb)
1464 /* #### should deal with ERRB */
1465 EXTERNAL_LIST_LOOP(rest, value) {
1466 Lisp_Object range = XCAR(rest);
1467 struct chartab_range dummy;
1471 signal_simple_error("Invalid list format", value);
1473 if (!CONSP(XCDR(range))
1474 || !NILP(XCDR(XCDR(range))))
1475 signal_simple_error("Invalid range format",
1477 decode_char_table_range(XCAR(range), &dummy);
1478 decode_char_table_range(XCAR(XCDR(range)), &dummy);
1480 decode_char_table_range(range, &dummy);
1486 static Lisp_Object chartab_instantiate(Lisp_Object data)
1488 Lisp_Object chartab;
1489 Lisp_Object type = Qgeneric;
1490 Lisp_Object dataval = Qnil;
1492 while (!NILP(data)) {
1493 Lisp_Object keyw = Fcar(data);
1499 if (EQ(keyw, Qtype))
1501 else if (EQ(keyw, Qdata))
1505 chartab = Fmake_char_table(type);
1508 while (!NILP(data)) {
1509 Lisp_Object range = Fcar(data);
1510 Lisp_Object val = Fcar(Fcdr(data));
1512 data = Fcdr(Fcdr(data));
1514 if (CHAR_OR_CHAR_INTP(XCAR(range))) {
1515 Emchar first = XCHAR_OR_CHAR_INT(Fcar(range));
1517 XCHAR_OR_CHAR_INT(Fcar(Fcdr(range)));
1520 for (i = first; i <= last; i++)
1521 Fput_char_table(make_char(i), val,
1526 Fput_char_table(range, val, chartab);
1534 /************************************************************************/
1535 /* Category Tables, specifically */
1536 /************************************************************************/
1538 DEFUN("category-table-p", Fcategory_table_p, 1, 1, 0, /*
1539 Return t if OBJECT is a category table.
1540 A category table is a type of char table used for keeping track of
1541 categories. Categories are used for classifying characters for use
1542 in regexps -- you can refer to a category rather than having to use
1543 a complicated [] expression (and category lookups are significantly
1546 There are 95 different categories available, one for each printable
1547 character (including space) in the ASCII charset. Each category
1548 is designated by one such character, called a "category designator".
1549 They are specified in a regexp using the syntax "\\cX", where X is
1550 a category designator.
1552 A category table specifies, for each character, the categories that
1553 the character is in. Note that a character can be in more than one
1554 category. More specifically, a category table maps from a character
1555 to either the value nil (meaning the character is in no categories)
1556 or a 95-element bit vector, specifying for each of the 95 categories
1557 whether the character is in that category.
1559 Special Lisp functions are provided that abstract this, so you do not
1560 have to directly manipulate bit vectors.
1564 return (CHAR_TABLEP(object) &&
1565 XCHAR_TABLE_TYPE(object) == CHAR_TABLE_TYPE_CATEGORY) ?
1570 check_category_table(Lisp_Object object, Lisp_Object default_)
1574 while (NILP(Fcategory_table_p(object)))
1575 object = wrong_type_argument(Qcategory_table_p, object);
1580 check_category_char(Emchar ch, Lisp_Object table,
1581 unsigned int designator, unsigned int not_p)
1583 REGISTER Lisp_Object temp;
1584 Lisp_Char_Table *ctbl;
1585 #ifdef ERROR_CHECK_TYPECHECK
1586 if (NILP(Fcategory_table_p(table)))
1587 signal_simple_error("Expected category table", table);
1589 ctbl = XCHAR_TABLE(table);
1590 temp = get_char_table(ch, ctbl);
1595 return bit_vector_bit(XBIT_VECTOR(temp), designator) ? !not_p : not_p;
1598 DEFUN("check-category-at", Fcheck_category_at, 2, 4, 0, /*
1599 Return t if category of the character at POSITION includes DESIGNATOR.
1600 Optional third arg BUFFER specifies which buffer to use, and defaults
1601 to the current buffer.
1602 Optional fourth arg CATEGORY-TABLE specifies the category table to
1603 use, and defaults to BUFFER's category table.
1605 (position, designator, buffer, category_table))
1610 struct buffer *buf = decode_buffer(buffer, 0);
1612 CHECK_INT(position);
1613 CHECK_CATEGORY_DESIGNATOR(designator);
1614 des = XCHAR(designator);
1615 ctbl = check_category_table(category_table, Vstandard_category_table);
1616 ch = BUF_FETCH_CHAR(buf, XINT(position));
1617 return check_category_char(ch, ctbl, des, 0) ? Qt : Qnil;
1620 DEFUN("char-in-category-p", Fchar_in_category_p, 2, 3, 0, /*
1621 Return t if category of CHARACTER includes DESIGNATOR, else nil.
1622 Optional third arg CATEGORY-TABLE specifies the category table to use,
1623 and defaults to the standard category table.
1625 (character, designator, category_table))
1631 CHECK_CATEGORY_DESIGNATOR(designator);
1632 des = XCHAR(designator);
1633 CHECK_CHAR(character);
1634 ch = XCHAR(character);
1635 ctbl = check_category_table(category_table, Vstandard_category_table);
1636 return check_category_char(ch, ctbl, des, 0) ? Qt : Qnil;
1639 DEFUN("category-table", Fcategory_table, 0, 1, 0, /*
1640 Return BUFFER's current category table.
1641 BUFFER defaults to the current buffer.
1645 return decode_buffer(buffer, 0)->category_table;
1648 DEFUN("standard-category-table", Fstandard_category_table, 0, 0, 0, /*
1649 Return the standard category table.
1650 This is the one used for new buffers.
1654 return Vstandard_category_table;
1657 DEFUN("copy-category-table", Fcopy_category_table, 0, 1, 0, /*
1658 Return a new category table which is a copy of CATEGORY-TABLE.
1659 CATEGORY-TABLE defaults to the standard category table.
1663 if (NILP(Vstandard_category_table))
1664 return Fmake_char_table(Qcategory);
1667 check_category_table(category_table, Vstandard_category_table);
1668 return Fcopy_char_table(category_table);
1671 DEFUN("set-category-table", Fset_category_table, 1, 2, 0, /*
1672 Select CATEGORY-TABLE as the new category table for BUFFER.
1673 BUFFER defaults to the current buffer if omitted.
1675 (category_table, buffer))
1677 struct buffer *buf = decode_buffer(buffer, 0);
1678 category_table = check_category_table(category_table, Qnil);
1679 buf->category_table = category_table;
1680 /* Indicate that this buffer now has a specified category table. */
1681 buf->local_var_flags |= XINT(buffer_local_flags.category_table);
1682 return category_table;
1685 DEFUN("category-designator-p", Fcategory_designator_p, 1, 1, 0, /*
1686 Return t if OBJECT is a category designator (a char in the range ' ' to '~').
1690 return CATEGORY_DESIGNATORP(object) ? Qt : Qnil;
1693 DEFUN("category-table-value-p", Fcategory_table_value_p, 1, 1, 0, /*
1694 Return t if OBJECT is a category table value.
1695 Valid values are nil or a bit vector of size 95.
1699 return CATEGORY_TABLE_VALUEP(object) ? Qt : Qnil;
1702 #define CATEGORYP(x) \
1703 (CHARP (x) && XCHAR (x) >= 0x20 && XCHAR (x) <= 0x7E)
1705 #define CATEGORY_SET(c) \
1706 (get_char_table(c, XCHAR_TABLE(current_buffer->category_table)))
1708 /* Return 1 if CATEGORY_SET contains CATEGORY, else return 0.
1709 The faster version of `!NILP (Faref (category_set, category))'. */
1710 #define CATEGORY_MEMBER(category, category_set) \
1711 (bit_vector_bit(XBIT_VECTOR (category_set), category - 32))
1713 /* Return 1 if there is a word boundary between two word-constituent
1714 characters C1 and C2 if they appear in this order, else return 0.
1715 Use the macro WORD_BOUNDARY_P instead of calling this function
1718 int word_boundary_p(Emchar c1, Emchar c2);
1719 int word_boundary_p(Emchar c1, Emchar c2)
1721 Lisp_Object category_set1, category_set2;
1726 if (COMPOSITE_CHAR_P(c1))
1727 c1 = cmpchar_component(c1, 0, 1);
1728 if (COMPOSITE_CHAR_P(c2))
1729 c2 = cmpchar_component(c2, 0, 1);
1732 if (EQ(CHAR_CHARSET(c1), CHAR_CHARSET(c2))) {
1733 tail = Vword_separating_categories;
1736 tail = Vword_combining_categories;
1740 category_set1 = CATEGORY_SET(c1);
1741 if (NILP(category_set1))
1742 return default_result;
1743 category_set2 = CATEGORY_SET(c2);
1744 if (NILP(category_set2))
1745 return default_result;
1747 for (; CONSP(tail); tail = XCONS(tail)->cdr) {
1748 Lisp_Object elt = XCONS(tail)->car;
1751 && CATEGORYP(XCONS(elt)->car)
1752 && CATEGORYP(XCONS(elt)->cdr)
1753 && CATEGORY_MEMBER(XCHAR(XCONS(elt)->car), category_set1)
1754 && CATEGORY_MEMBER(XCHAR(XCONS(elt)->cdr), category_set2))
1755 return !default_result;
1757 return default_result;
1761 void syms_of_chartab(void)
1763 INIT_LRECORD_IMPLEMENTATION(char_table);
1766 INIT_LRECORD_IMPLEMENTATION(char_table_entry);
1768 defsymbol(&Qcategory_table_p, "category-table-p");
1769 defsymbol(&Qcategory_designator_p, "category-designator-p");
1770 defsymbol(&Qcategory_table_value_p, "category-table-value-p");
1773 defsymbol(&Qchar_table, "char-table");
1774 defsymbol(&Qchar_tablep, "char-table-p");
1776 DEFSUBR(Fchar_table_p);
1777 DEFSUBR(Fchar_table_type_list);
1778 DEFSUBR(Fvalid_char_table_type_p);
1779 DEFSUBR(Fchar_table_type);
1780 DEFSUBR(Freset_char_table);
1781 DEFSUBR(Fmake_char_table);
1782 DEFSUBR(Fcopy_char_table);
1783 DEFSUBR(Fget_char_table);
1784 DEFSUBR(Fget_range_char_table);
1785 DEFSUBR(Fvalid_char_table_value_p);
1786 DEFSUBR(Fcheck_valid_char_table_value);
1787 DEFSUBR(Fput_char_table);
1788 DEFSUBR(Fmap_char_table);
1791 DEFSUBR(Fcategory_table_p);
1792 DEFSUBR(Fcategory_table);
1793 DEFSUBR(Fstandard_category_table);
1794 DEFSUBR(Fcopy_category_table);
1795 DEFSUBR(Fset_category_table);
1796 DEFSUBR(Fcheck_category_at);
1797 DEFSUBR(Fchar_in_category_p);
1798 DEFSUBR(Fcategory_designator_p);
1799 DEFSUBR(Fcategory_table_value_p);
1804 void vars_of_chartab(void)
1806 /* DO NOT staticpro this. It works just like Vweak_hash_tables. */
1807 Vall_syntax_tables = Qnil;
1808 dump_add_weak_object_chain(&Vall_syntax_tables);
1811 void structure_type_create_chartab(void)
1813 struct structure_type *st;
1815 st = define_structure_type(Qchar_table, 0, chartab_instantiate);
1817 define_structure_type_keyword(st, Qtype, chartab_type_validate);
1818 define_structure_type_keyword(st, Qdata, chartab_data_validate);
1821 void complex_vars_of_chartab(void)
1824 /* Set this now, so first buffer creation can refer to it. */
1825 /* Make it nil before calling copy-category-table
1826 so that copy-category-table will know not to try to copy from garbage */
1827 Vstandard_category_table = Qnil;
1828 Vstandard_category_table = Fcopy_category_table(Qnil);
1829 staticpro(&Vstandard_category_table);
1831 DEFVAR_LISP("word-combining-categories", &Vword_combining_categories /*
1832 List of pair (cons) of categories to determine word boundary.
1834 Emacs treats a sequence of word constituent characters as a single
1835 word (i.e. finds no word boundary between them) iff they belongs to
1836 the same charset. But, exceptions are allowed in the following cases.
1838 \(1) The case that characters are in different charsets is controlled
1839 by the variable `word-combining-categories'.
1841 Emacs finds no word boundary between characters of different charsets
1842 if they have categories matching some element of this list.
1844 More precisely, if an element of this list is a cons of category CAT1
1845 and CAT2, and a multibyte character C1 which has CAT1 is followed by
1846 C2 which has CAT2, there's no word boundary between C1 and C2.
1848 For instance, to tell that ASCII characters and Latin-1 characters can
1849 form a single word, the element `(?l . ?l)' should be in this list
1850 because both characters have the category `l' (Latin characters).
1852 \(2) The case that character are in the same charset is controlled by
1853 the variable `word-separating-categories'.
1855 Emacs find a word boundary between characters of the same charset
1856 if they have categories matching some element of this list.
1858 More precisely, if an element of this list is a cons of category CAT1
1859 and CAT2, and a multibyte character C1 which has CAT1 is followed by
1860 C2 which has CAT2, there's a word boundary between C1 and C2.
1862 For instance, to tell that there's a word boundary between Japanese
1863 Hiragana and Japanese Kanji (both are in the same charset), the
1864 element `(?H . ?C) should be in this list.
1867 Vword_combining_categories = Qnil;
1869 DEFVAR_LISP("word-separating-categories", &Vword_separating_categories /*
1870 List of pair (cons) of categories to determine word boundary.
1871 See the documentation of the variable `word-combining-categories'.
1874 Vword_separating_categories = Qnil;