1 /* XEmacs 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 XEmacs.
10 XEmacs is free software; you can redistribute it and/or modify it
11 under the terms of the GNU General Public License as published by the
12 Free Software Foundation; either version 2, or (at your option) any
15 XEmacs is distributed in the hope that it will be useful, but WITHOUT
16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 You should have received a copy of the GNU General Public License
21 along with XEmacs; see the file COPYING. If not, write to
22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
25 /* Synched up with: Mule 2.3. Not synched with FSF.
27 This file was written independently of the FSF implementation,
28 and is not compatible. */
32 Ben Wing: wrote, for 19.13 (Mule). Some category table stuff
33 loosely based on the original Mule.
34 Jareth Hein: fixed a couple of bugs in the implementation, and
35 added regex support for categories with check_category_at
45 Lisp_Object Qchar_tablep, Qchar_table;
47 Lisp_Object Vall_syntax_tables;
50 Lisp_Object Qcategory_table_p;
51 Lisp_Object Qcategory_designator_p;
52 Lisp_Object Qcategory_table_value_p;
54 Lisp_Object Vstandard_category_table;
56 /* Variables to determine word boundary. */
57 Lisp_Object Vword_combining_categories, Vword_separating_categories;
61 /* A char table maps from ranges of characters to values.
63 Implementing a general data structure that maps from arbitrary
64 ranges of numbers to values is tricky to do efficiently. As it
65 happens, it should suffice (and is usually more convenient, anyway)
66 when dealing with characters to restrict the sorts of ranges that
67 can be assigned values, as follows:
70 2) All characters in a charset.
71 3) All characters in a particular row of a charset, where a "row"
72 means all characters with the same first byte.
73 4) A particular character in a charset.
75 We use char tables to generalize the 256-element vectors now
76 littering the Emacs code.
78 Possible uses (all should be converted at some point):
84 5) keyboard-translate-table?
87 abstract type to generalize the Emacs vectors and Mule
88 vectors-of-vectors goo.
91 /************************************************************************/
92 /* Char Table object */
93 /************************************************************************/
98 mark_char_table_entry (Lisp_Object obj)
100 struct Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY (obj);
103 for (i = 0; i < 96; i++)
105 mark_object (cte->level2[i]);
111 char_table_entry_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
113 struct Lisp_Char_Table_Entry *cte1 = XCHAR_TABLE_ENTRY (obj1);
114 struct Lisp_Char_Table_Entry *cte2 = XCHAR_TABLE_ENTRY (obj2);
117 for (i = 0; i < 96; i++)
118 if (!internal_equal (cte1->level2[i], cte2->level2[i], depth + 1))
125 char_table_entry_hash (Lisp_Object obj, int depth)
127 struct Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY (obj);
129 return internal_array_hash (cte->level2, 96, depth);
132 static const struct lrecord_description char_table_entry_description[] = {
133 { XD_LISP_OBJECT, offsetof(struct Lisp_Char_Table_Entry, level2), 96 },
137 DEFINE_LRECORD_IMPLEMENTATION ("char-table-entry", char_table_entry,
138 mark_char_table_entry, internal_object_printer,
139 0, char_table_entry_equal,
140 char_table_entry_hash,
141 char_table_entry_description,
142 struct Lisp_Char_Table_Entry);
146 mark_char_table (Lisp_Object obj)
148 struct Lisp_Char_Table *ct = XCHAR_TABLE (obj);
151 for (i = 0; i < NUM_ASCII_CHARS; i++)
152 mark_object (ct->ascii[i]);
154 for (i = 0; i < NUM_LEADING_BYTES; i++)
155 mark_object (ct->level1[i]);
157 return ct->mirror_table;
160 /* WARNING: All functions of this nature need to be written extremely
161 carefully to avoid crashes during GC. Cf. prune_specifiers()
162 and prune_weak_hash_tables(). */
165 prune_syntax_tables (void)
167 Lisp_Object rest, prev = Qnil;
169 for (rest = Vall_syntax_tables;
171 rest = XCHAR_TABLE (rest)->next_table)
173 if (! marked_p (rest))
175 /* This table is garbage. Remove it from the list. */
177 Vall_syntax_tables = XCHAR_TABLE (rest)->next_table;
179 XCHAR_TABLE (prev)->next_table =
180 XCHAR_TABLE (rest)->next_table;
186 char_table_type_to_symbol (enum char_table_type type)
191 case CHAR_TABLE_TYPE_GENERIC: return Qgeneric;
192 case CHAR_TABLE_TYPE_SYNTAX: return Qsyntax;
193 case CHAR_TABLE_TYPE_DISPLAY: return Qdisplay;
194 case CHAR_TABLE_TYPE_CHAR: return Qchar;
196 case CHAR_TABLE_TYPE_CATEGORY: return Qcategory;
201 static enum char_table_type
202 symbol_to_char_table_type (Lisp_Object symbol)
204 CHECK_SYMBOL (symbol);
206 if (EQ (symbol, Qgeneric)) return CHAR_TABLE_TYPE_GENERIC;
207 if (EQ (symbol, Qsyntax)) return CHAR_TABLE_TYPE_SYNTAX;
208 if (EQ (symbol, Qdisplay)) return CHAR_TABLE_TYPE_DISPLAY;
209 if (EQ (symbol, Qchar)) return CHAR_TABLE_TYPE_CHAR;
211 if (EQ (symbol, Qcategory)) return CHAR_TABLE_TYPE_CATEGORY;
214 signal_simple_error ("Unrecognized char table type", symbol);
215 return CHAR_TABLE_TYPE_GENERIC; /* not reached */
219 print_chartab_range (Emchar first, Emchar last, Lisp_Object val,
220 Lisp_Object printcharfun)
224 write_c_string (" (", printcharfun);
225 print_internal (make_char (first), printcharfun, 0);
226 write_c_string (" ", printcharfun);
227 print_internal (make_char (last), printcharfun, 0);
228 write_c_string (") ", printcharfun);
232 write_c_string (" ", printcharfun);
233 print_internal (make_char (first), printcharfun, 0);
234 write_c_string (" ", printcharfun);
236 print_internal (val, printcharfun, 1);
242 print_chartab_charset_row (Lisp_Object charset,
244 struct Lisp_Char_Table_Entry *cte,
245 Lisp_Object printcharfun)
248 Lisp_Object cat = Qunbound;
251 for (i = 32; i < 128; i++)
253 Lisp_Object pam = cte->level2[i - 32];
265 print_chartab_range (MAKE_CHAR (charset, first, 0),
266 MAKE_CHAR (charset, i - 1, 0),
269 print_chartab_range (MAKE_CHAR (charset, row, first),
270 MAKE_CHAR (charset, row, i - 1),
280 print_chartab_range (MAKE_CHAR (charset, first, 0),
281 MAKE_CHAR (charset, i - 1, 0),
284 print_chartab_range (MAKE_CHAR (charset, row, first),
285 MAKE_CHAR (charset, row, i - 1),
291 print_chartab_two_byte_charset (Lisp_Object charset,
292 struct Lisp_Char_Table_Entry *cte,
293 Lisp_Object printcharfun)
297 for (i = 32; i < 128; i++)
299 Lisp_Object jen = cte->level2[i - 32];
301 if (!CHAR_TABLE_ENTRYP (jen))
305 write_c_string (" [", printcharfun);
306 print_internal (XCHARSET_NAME (charset), printcharfun, 0);
307 sprintf (buf, " %d] ", i);
308 write_c_string (buf, printcharfun);
309 print_internal (jen, printcharfun, 0);
312 print_chartab_charset_row (charset, i, XCHAR_TABLE_ENTRY (jen),
320 print_char_table (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
322 struct Lisp_Char_Table *ct = XCHAR_TABLE (obj);
325 sprintf (buf, "#s(char-table type %s data (",
326 string_data (symbol_name (XSYMBOL
327 (char_table_type_to_symbol (ct->type)))));
328 write_c_string (buf, printcharfun);
330 /* Now write out the ASCII/Control-1 stuff. */
334 Lisp_Object val = Qunbound;
336 for (i = 0; i < NUM_ASCII_CHARS; i++)
345 if (!EQ (ct->ascii[i], val))
347 print_chartab_range (first, i - 1, val, printcharfun);
354 print_chartab_range (first, i - 1, val, printcharfun);
361 for (i = MIN_LEADING_BYTE; i < MIN_LEADING_BYTE + NUM_LEADING_BYTES;
364 Lisp_Object ann = ct->level1[i - MIN_LEADING_BYTE];
365 Lisp_Object charset = CHARSET_BY_LEADING_BYTE (i);
367 if (!CHARSETP (charset) || i == LEADING_BYTE_ASCII
368 || i == LEADING_BYTE_CONTROL_1)
370 if (!CHAR_TABLE_ENTRYP (ann))
372 write_c_string (" ", printcharfun);
373 print_internal (XCHARSET_NAME (charset),
375 write_c_string (" ", printcharfun);
376 print_internal (ann, printcharfun, 0);
380 struct Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY (ann);
381 if (XCHARSET_DIMENSION (charset) == 1)
382 print_chartab_charset_row (charset, -1, cte, printcharfun);
384 print_chartab_two_byte_charset (charset, cte, printcharfun);
390 write_c_string ("))", printcharfun);
394 char_table_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
396 struct Lisp_Char_Table *ct1 = XCHAR_TABLE (obj1);
397 struct Lisp_Char_Table *ct2 = XCHAR_TABLE (obj2);
400 if (CHAR_TABLE_TYPE (ct1) != CHAR_TABLE_TYPE (ct2))
403 for (i = 0; i < NUM_ASCII_CHARS; i++)
404 if (!internal_equal (ct1->ascii[i], ct2->ascii[i], depth + 1))
408 for (i = 0; i < NUM_LEADING_BYTES; i++)
409 if (!internal_equal (ct1->level1[i], ct2->level1[i], depth + 1))
417 char_table_hash (Lisp_Object obj, int depth)
419 struct Lisp_Char_Table *ct = XCHAR_TABLE (obj);
420 unsigned long hashval = internal_array_hash (ct->ascii, NUM_ASCII_CHARS,
423 hashval = HASH2 (hashval,
424 internal_array_hash (ct->level1, NUM_LEADING_BYTES, depth));
429 static const struct lrecord_description char_table_description[] = {
430 { XD_LISP_OBJECT, offsetof(struct Lisp_Char_Table, ascii), NUM_ASCII_CHARS },
432 { XD_LISP_OBJECT, offsetof(struct Lisp_Char_Table, level1), NUM_LEADING_BYTES },
434 { XD_LISP_OBJECT, offsetof(struct Lisp_Char_Table, mirror_table), 1 },
435 { XD_LO_LINK, offsetof(struct Lisp_Char_Table, next_table) },
439 DEFINE_LRECORD_IMPLEMENTATION ("char-table", char_table,
440 mark_char_table, print_char_table, 0,
441 char_table_equal, char_table_hash,
442 char_table_description,
443 struct Lisp_Char_Table);
445 DEFUN ("char-table-p", Fchar_table_p, 1, 1, 0, /*
446 Return non-nil if OBJECT is a char table.
448 A char table is a table that maps characters (or ranges of characters)
449 to values. Char tables are specialized for characters, only allowing
450 particular sorts of ranges to be assigned values. Although this
451 loses in generality, it makes for extremely fast (constant-time)
452 lookups, and thus is feasible for applications that do an extremely
453 large number of lookups (e.g. scanning a buffer for a character in
454 a particular syntax, where a lookup in the syntax table must occur
457 When Mule support exists, the types of ranges that can be assigned
462 -- a single row in a two-octet charset
463 -- a single character
465 When Mule support is not present, the types of ranges that can be
469 -- a single character
471 To create a char table, use `make-char-table'. To modify a char
472 table, use `put-char-table' or `remove-char-table'. To retrieve the
473 value for a particular character, use `get-char-table'. See also
474 `map-char-table', `clear-char-table', `copy-char-table',
475 `valid-char-table-type-p', `char-table-type-list', `valid-char-table-value-p',
476 and `check-char-table-value'.
480 return CHAR_TABLEP (object) ? Qt : Qnil;
483 DEFUN ("char-table-type-list", Fchar_table_type_list, 0, 0, 0, /*
484 Return a list of the recognized char table types.
485 See `valid-char-table-type-p'.
490 return list5 (Qchar, Qcategory, Qdisplay, Qgeneric, Qsyntax);
492 return list4 (Qchar, Qdisplay, Qgeneric, Qsyntax);
496 DEFUN ("valid-char-table-type-p", Fvalid_char_table_type_p, 1, 1, 0, /*
497 Return t if TYPE if a recognized char table type.
499 Each char table type is used for a different purpose and allows different
500 sorts of values. The different char table types are
503 Used for category tables, which specify the regexp categories
504 that a character is in. The valid values are nil or a
505 bit vector of 95 elements. Higher-level Lisp functions are
506 provided for working with category tables. Currently categories
507 and category tables only exist when Mule support is present.
509 A generalized char table, for mapping from one character to
510 another. Used for case tables, syntax matching tables,
511 `keyboard-translate-table', etc. The valid values are characters.
513 An even more generalized char table, for mapping from a
514 character to anything.
516 Used for display tables, which specify how a particular character
517 is to appear when displayed. #### Not yet implemented.
519 Used for syntax tables, which specify the syntax of a particular
520 character. Higher-level Lisp functions are provided for
521 working with syntax tables. The valid values are integers.
526 return (EQ (type, Qchar) ||
528 EQ (type, Qcategory) ||
530 EQ (type, Qdisplay) ||
531 EQ (type, Qgeneric) ||
532 EQ (type, Qsyntax)) ? Qt : Qnil;
535 DEFUN ("char-table-type", Fchar_table_type, 1, 1, 0, /*
536 Return the type of char table TABLE.
537 See `valid-char-table-type-p'.
541 CHECK_CHAR_TABLE (table);
542 return char_table_type_to_symbol (XCHAR_TABLE (table)->type);
546 fill_char_table (struct Lisp_Char_Table *ct, Lisp_Object value)
550 for (i = 0; i < NUM_ASCII_CHARS; i++)
551 ct->ascii[i] = value;
553 for (i = 0; i < NUM_LEADING_BYTES; i++)
554 ct->level1[i] = value;
557 if (ct->type == CHAR_TABLE_TYPE_SYNTAX)
558 update_syntax_table (ct);
561 DEFUN ("reset-char-table", Freset_char_table, 1, 1, 0, /*
562 Reset a char table to its default state.
566 struct Lisp_Char_Table *ct;
568 CHECK_CHAR_TABLE (table);
569 ct = XCHAR_TABLE (table);
573 case CHAR_TABLE_TYPE_CHAR:
574 fill_char_table (ct, make_char (0));
576 case CHAR_TABLE_TYPE_DISPLAY:
577 case CHAR_TABLE_TYPE_GENERIC:
579 case CHAR_TABLE_TYPE_CATEGORY:
581 fill_char_table (ct, Qnil);
584 case CHAR_TABLE_TYPE_SYNTAX:
585 fill_char_table (ct, make_int (Sinherit));
595 DEFUN ("make-char-table", Fmake_char_table, 1, 1, 0, /*
596 Return a new, empty char table of type TYPE.
597 Currently recognized types are 'char, 'category, 'display, 'generic,
598 and 'syntax. See `valid-char-table-type-p'.
602 struct Lisp_Char_Table *ct;
604 enum char_table_type ty = symbol_to_char_table_type (type);
606 ct = alloc_lcrecord_type (struct Lisp_Char_Table, &lrecord_char_table);
608 if (ty == CHAR_TABLE_TYPE_SYNTAX)
610 ct->mirror_table = Fmake_char_table (Qgeneric);
611 fill_char_table (XCHAR_TABLE (ct->mirror_table),
615 ct->mirror_table = Qnil;
616 ct->next_table = Qnil;
617 XSETCHAR_TABLE (obj, ct);
618 if (ty == CHAR_TABLE_TYPE_SYNTAX)
620 ct->next_table = Vall_syntax_tables;
621 Vall_syntax_tables = obj;
623 Freset_char_table (obj);
630 make_char_table_entry (Lisp_Object initval)
634 struct Lisp_Char_Table_Entry *cte =
635 alloc_lcrecord_type (struct Lisp_Char_Table_Entry,
636 &lrecord_char_table_entry);
638 for (i = 0; i < 96; i++)
639 cte->level2[i] = initval;
641 XSETCHAR_TABLE_ENTRY (obj, cte);
646 copy_char_table_entry (Lisp_Object entry)
648 struct Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY (entry);
651 struct Lisp_Char_Table_Entry *ctenew =
652 alloc_lcrecord_type (struct Lisp_Char_Table_Entry,
653 &lrecord_char_table_entry);
655 for (i = 0; i < 96; i++)
657 Lisp_Object new = cte->level2[i];
658 if (CHAR_TABLE_ENTRYP (new))
659 ctenew->level2[i] = copy_char_table_entry (new);
661 ctenew->level2[i] = new;
664 XSETCHAR_TABLE_ENTRY (obj, ctenew);
670 DEFUN ("copy-char-table", Fcopy_char_table, 1, 1, 0, /*
671 Make a new char table which is a copy of OLD-TABLE.
672 It will contain the same values for the same characters and ranges
673 as OLD-TABLE. The values will not themselves be copied.
677 struct Lisp_Char_Table *ct, *ctnew;
681 CHECK_CHAR_TABLE (old_table);
682 ct = XCHAR_TABLE (old_table);
683 ctnew = alloc_lcrecord_type (struct Lisp_Char_Table, &lrecord_char_table);
684 ctnew->type = ct->type;
686 for (i = 0; i < NUM_ASCII_CHARS; i++)
688 Lisp_Object new = ct->ascii[i];
690 assert (! (CHAR_TABLE_ENTRYP (new)));
692 ctnew->ascii[i] = new;
697 for (i = 0; i < NUM_LEADING_BYTES; i++)
699 Lisp_Object new = ct->level1[i];
700 if (CHAR_TABLE_ENTRYP (new))
701 ctnew->level1[i] = copy_char_table_entry (new);
703 ctnew->level1[i] = new;
708 if (CHAR_TABLEP (ct->mirror_table))
709 ctnew->mirror_table = Fcopy_char_table (ct->mirror_table);
711 ctnew->mirror_table = ct->mirror_table;
712 ctnew->next_table = Qnil;
713 XSETCHAR_TABLE (obj, ctnew);
714 if (ctnew->type == CHAR_TABLE_TYPE_SYNTAX)
716 ctnew->next_table = Vall_syntax_tables;
717 Vall_syntax_tables = obj;
723 decode_char_table_range (Lisp_Object range, struct chartab_range *outrange)
726 outrange->type = CHARTAB_RANGE_ALL;
727 else if (CHAR_OR_CHAR_INTP (range))
729 outrange->type = CHARTAB_RANGE_CHAR;
730 outrange->ch = XCHAR_OR_CHAR_INT (range);
734 signal_simple_error ("Range must be t or a character", range);
736 else if (VECTORP (range))
738 struct Lisp_Vector *vec = XVECTOR (range);
739 Lisp_Object *elts = vector_data (vec);
740 if (vector_length (vec) != 2)
741 signal_simple_error ("Length of charset row vector must be 2",
743 outrange->type = CHARTAB_RANGE_ROW;
744 outrange->charset = Fget_charset (elts[0]);
746 outrange->row = XINT (elts[1]);
747 switch (XCHARSET_TYPE (outrange->charset))
749 case CHARSET_TYPE_94:
750 case CHARSET_TYPE_96:
751 signal_simple_error ("Charset in row vector must be multi-byte",
753 case CHARSET_TYPE_94X94:
754 check_int_range (outrange->row, 33, 126);
756 case CHARSET_TYPE_96X96:
757 check_int_range (outrange->row, 32, 127);
765 if (!CHARSETP (range) && !SYMBOLP (range))
767 ("Char table range must be t, charset, char, or vector", range);
768 outrange->type = CHARTAB_RANGE_CHARSET;
769 outrange->charset = Fget_charset (range);
776 /* called from CHAR_TABLE_VALUE(). */
778 get_non_ascii_char_table_value (struct Lisp_Char_Table *ct, int leading_byte,
782 Lisp_Object charset = CHARSET_BY_LEADING_BYTE (leading_byte);
785 BREAKUP_CHAR_1_UNSAFE (c, charset, byte1, byte2);
786 val = ct->level1[leading_byte - MIN_LEADING_BYTE];
787 if (CHAR_TABLE_ENTRYP (val))
789 struct Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY (val);
790 val = cte->level2[byte1 - 32];
791 if (CHAR_TABLE_ENTRYP (val))
793 cte = XCHAR_TABLE_ENTRY (val);
794 assert (byte2 >= 32);
795 val = cte->level2[byte2 - 32];
796 assert (!CHAR_TABLE_ENTRYP (val));
806 get_char_table (Emchar ch, struct Lisp_Char_Table *ct)
814 BREAKUP_CHAR (ch, charset, byte1, byte2);
816 if (EQ (charset, Vcharset_ascii))
817 val = ct->ascii[byte1];
818 else if (EQ (charset, Vcharset_control_1))
819 val = ct->ascii[byte1 + 128];
822 int lb = XCHARSET_LEADING_BYTE (charset) - MIN_LEADING_BYTE;
823 val = ct->level1[lb];
824 if (CHAR_TABLE_ENTRYP (val))
826 struct Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY (val);
827 val = cte->level2[byte1 - 32];
828 if (CHAR_TABLE_ENTRYP (val))
830 cte = XCHAR_TABLE_ENTRY (val);
831 assert (byte2 >= 32);
832 val = cte->level2[byte2 - 32];
833 assert (!CHAR_TABLE_ENTRYP (val));
841 return ct->ascii[(unsigned char)ch];
842 #endif /* not MULE */
846 DEFUN ("get-char-table", Fget_char_table, 2, 2, 0, /*
847 Find value for char CH in TABLE.
851 struct Lisp_Char_Table *ct;
853 CHECK_CHAR_TABLE (table);
854 ct = XCHAR_TABLE (table);
855 CHECK_CHAR_COERCE_INT (ch);
857 return get_char_table (XCHAR (ch), ct);
860 DEFUN ("get-range-char-table", Fget_range_char_table, 2, 3, 0, /*
861 Find value for a range in TABLE.
862 If there is more than one value, return MULTI (defaults to nil).
864 (range, table, multi))
866 struct Lisp_Char_Table *ct;
867 struct chartab_range rainj;
869 if (CHAR_OR_CHAR_INTP (range))
870 return Fget_char_table (range, table);
871 CHECK_CHAR_TABLE (table);
872 ct = XCHAR_TABLE (table);
874 decode_char_table_range (range, &rainj);
877 case CHARTAB_RANGE_ALL:
880 Lisp_Object first = ct->ascii[0];
882 for (i = 1; i < NUM_ASCII_CHARS; i++)
883 if (!EQ (first, ct->ascii[i]))
887 for (i = MIN_LEADING_BYTE; i < MIN_LEADING_BYTE + NUM_LEADING_BYTES;
890 if (!CHARSETP (CHARSET_BY_LEADING_BYTE (i))
891 || i == LEADING_BYTE_ASCII
892 || i == LEADING_BYTE_CONTROL_1)
894 if (!EQ (first, ct->level1[i - MIN_LEADING_BYTE]))
903 case CHARTAB_RANGE_CHARSET:
904 if (EQ (rainj.charset, Vcharset_ascii))
907 Lisp_Object first = ct->ascii[0];
909 for (i = 1; i < 128; i++)
910 if (!EQ (first, ct->ascii[i]))
915 if (EQ (rainj.charset, Vcharset_control_1))
918 Lisp_Object first = ct->ascii[128];
920 for (i = 129; i < 160; i++)
921 if (!EQ (first, ct->ascii[i]))
927 Lisp_Object val = ct->level1[XCHARSET_LEADING_BYTE (rainj.charset) -
929 if (CHAR_TABLE_ENTRYP (val))
934 case CHARTAB_RANGE_ROW:
936 Lisp_Object val = ct->level1[XCHARSET_LEADING_BYTE (rainj.charset) -
938 if (!CHAR_TABLE_ENTRYP (val))
940 val = XCHAR_TABLE_ENTRY (val)->level2[rainj.row - 32];
941 if (CHAR_TABLE_ENTRYP (val))
945 #endif /* not MULE */
951 return Qnil; /* not reached */
955 check_valid_char_table_value (Lisp_Object value, enum char_table_type type,
960 case CHAR_TABLE_TYPE_SYNTAX:
961 if (!ERRB_EQ (errb, ERROR_ME))
962 return INTP (value) || (CONSP (value) && INTP (XCAR (value))
963 && CHAR_OR_CHAR_INTP (XCDR (value)));
966 Lisp_Object cdr = XCDR (value);
967 CHECK_INT (XCAR (value));
968 CHECK_CHAR_COERCE_INT (cdr);
975 case CHAR_TABLE_TYPE_CATEGORY:
976 if (!ERRB_EQ (errb, ERROR_ME))
977 return CATEGORY_TABLE_VALUEP (value);
978 CHECK_CATEGORY_TABLE_VALUE (value);
982 case CHAR_TABLE_TYPE_GENERIC:
985 case CHAR_TABLE_TYPE_DISPLAY:
987 maybe_signal_simple_error ("Display char tables not yet implemented",
988 value, Qchar_table, errb);
991 case CHAR_TABLE_TYPE_CHAR:
992 if (!ERRB_EQ (errb, ERROR_ME))
993 return CHAR_OR_CHAR_INTP (value);
994 CHECK_CHAR_COERCE_INT (value);
1001 return 0; /* not reached */
1005 canonicalize_char_table_value (Lisp_Object value, enum char_table_type type)
1009 case CHAR_TABLE_TYPE_SYNTAX:
1012 Lisp_Object car = XCAR (value);
1013 Lisp_Object cdr = XCDR (value);
1014 CHECK_CHAR_COERCE_INT (cdr);
1015 return Fcons (car, cdr);
1018 case CHAR_TABLE_TYPE_CHAR:
1019 CHECK_CHAR_COERCE_INT (value);
1027 DEFUN ("valid-char-table-value-p", Fvalid_char_table_value_p, 2, 2, 0, /*
1028 Return non-nil if VALUE is a valid value for CHAR-TABLE-TYPE.
1030 (value, char_table_type))
1032 enum char_table_type type = symbol_to_char_table_type (char_table_type);
1034 return check_valid_char_table_value (value, type, ERROR_ME_NOT) ? Qt : Qnil;
1037 DEFUN ("check-valid-char-table-value", Fcheck_valid_char_table_value, 2, 2, 0, /*
1038 Signal an error if VALUE is not a valid value for CHAR-TABLE-TYPE.
1040 (value, char_table_type))
1042 enum char_table_type type = symbol_to_char_table_type (char_table_type);
1044 check_valid_char_table_value (value, type, ERROR_ME);
1048 /* Assign VAL to all characters in RANGE in char table CT. */
1051 put_char_table (struct Lisp_Char_Table *ct, struct chartab_range *range,
1054 switch (range->type)
1056 case CHARTAB_RANGE_ALL:
1057 fill_char_table (ct, val);
1058 return; /* avoid the duplicate call to update_syntax_table() below,
1059 since fill_char_table() also did that. */
1062 case CHARTAB_RANGE_CHARSET:
1063 if (EQ (range->charset, Vcharset_ascii))
1066 for (i = 0; i < 128; i++)
1069 else if (EQ (range->charset, Vcharset_control_1))
1072 for (i = 128; i < 160; i++)
1077 int lb = XCHARSET_LEADING_BYTE (range->charset) - MIN_LEADING_BYTE;
1078 ct->level1[lb] = val;
1082 case CHARTAB_RANGE_ROW:
1084 struct Lisp_Char_Table_Entry *cte;
1085 int lb = XCHARSET_LEADING_BYTE (range->charset) - MIN_LEADING_BYTE;
1086 /* make sure that there is a separate entry for the row. */
1087 if (!CHAR_TABLE_ENTRYP (ct->level1[lb]))
1088 ct->level1[lb] = make_char_table_entry (ct->level1[lb]);
1089 cte = XCHAR_TABLE_ENTRY (ct->level1[lb]);
1090 cte->level2[range->row - 32] = val;
1095 case CHARTAB_RANGE_CHAR:
1098 Lisp_Object charset;
1101 BREAKUP_CHAR (range->ch, charset, byte1, byte2);
1102 if (EQ (charset, Vcharset_ascii))
1103 ct->ascii[byte1] = val;
1104 else if (EQ (charset, Vcharset_control_1))
1105 ct->ascii[byte1 + 128] = val;
1108 struct Lisp_Char_Table_Entry *cte;
1109 int lb = XCHARSET_LEADING_BYTE (charset) - MIN_LEADING_BYTE;
1110 /* make sure that there is a separate entry for the row. */
1111 if (!CHAR_TABLE_ENTRYP (ct->level1[lb]))
1112 ct->level1[lb] = make_char_table_entry (ct->level1[lb]);
1113 cte = XCHAR_TABLE_ENTRY (ct->level1[lb]);
1114 /* now CTE is a char table entry for the charset;
1115 each entry is for a single row (or character of
1116 a one-octet charset). */
1117 if (XCHARSET_DIMENSION (charset) == 1)
1118 cte->level2[byte1 - 32] = val;
1121 /* assigning to one character in a two-octet charset. */
1122 /* make sure that the charset row contains a separate
1123 entry for each character. */
1124 if (!CHAR_TABLE_ENTRYP (cte->level2[byte1 - 32]))
1125 cte->level2[byte1 - 32] =
1126 make_char_table_entry (cte->level2[byte1 - 32]);
1127 cte = XCHAR_TABLE_ENTRY (cte->level2[byte1 - 32]);
1128 cte->level2[byte2 - 32] = val;
1132 #else /* not MULE */
1133 ct->ascii[(unsigned char) (range->ch)] = val;
1135 #endif /* not MULE */
1138 if (ct->type == CHAR_TABLE_TYPE_SYNTAX)
1139 update_syntax_table (ct);
1142 DEFUN ("put-char-table", Fput_char_table, 3, 3, 0, /*
1143 Set the value for chars in RANGE to be VAL in TABLE.
1145 RANGE specifies one or more characters to be affected and should be
1146 one of the following:
1148 -- t (all characters are affected)
1149 -- A charset (only allowed when Mule support is present)
1150 -- A vector of two elements: a two-octet charset and a row number
1151 (only allowed when Mule support is present)
1152 -- A single character
1154 VAL must be a value appropriate for the type of TABLE.
1155 See `valid-char-table-type-p'.
1157 (range, val, table))
1159 struct Lisp_Char_Table *ct;
1160 struct chartab_range rainj;
1162 CHECK_CHAR_TABLE (table);
1163 ct = XCHAR_TABLE (table);
1164 check_valid_char_table_value (val, ct->type, ERROR_ME);
1165 decode_char_table_range (range, &rainj);
1166 val = canonicalize_char_table_value (val, ct->type);
1167 put_char_table (ct, &rainj, val);
1171 /* Map FN over the ASCII chars in CT. */
1174 map_over_charset_ascii (struct Lisp_Char_Table *ct,
1175 int (*fn) (struct chartab_range *range,
1176 Lisp_Object val, void *arg),
1179 struct chartab_range rainj;
1188 rainj.type = CHARTAB_RANGE_CHAR;
1190 for (i = start, retval = 0; i < stop && retval == 0; i++)
1192 rainj.ch = (Emchar) i;
1193 retval = (fn) (&rainj, ct->ascii[i], arg);
1201 /* Map FN over the Control-1 chars in CT. */
1204 map_over_charset_control_1 (struct Lisp_Char_Table *ct,
1205 int (*fn) (struct chartab_range *range,
1206 Lisp_Object val, void *arg),
1209 struct chartab_range rainj;
1212 int stop = start + 32;
1214 rainj.type = CHARTAB_RANGE_CHAR;
1216 for (i = start, retval = 0; i < stop && retval == 0; i++)
1218 rainj.ch = (Emchar) (i);
1219 retval = (fn) (&rainj, ct->ascii[i], arg);
1225 /* Map FN over the row ROW of two-byte charset CHARSET.
1226 There must be a separate value for that row in the char table.
1227 CTE specifies the char table entry for CHARSET. */
1230 map_over_charset_row (struct Lisp_Char_Table_Entry *cte,
1231 Lisp_Object charset, int row,
1232 int (*fn) (struct chartab_range *range,
1233 Lisp_Object val, void *arg),
1236 Lisp_Object val = cte->level2[row - 32];
1238 if (!CHAR_TABLE_ENTRYP (val))
1240 struct chartab_range rainj;
1242 rainj.type = CHARTAB_RANGE_ROW;
1243 rainj.charset = charset;
1245 return (fn) (&rainj, val, arg);
1249 struct chartab_range rainj;
1251 int charset94_p = (XCHARSET_CHARS (charset) == 94);
1252 int start = charset94_p ? 33 : 32;
1253 int stop = charset94_p ? 127 : 128;
1255 cte = XCHAR_TABLE_ENTRY (val);
1257 rainj.type = CHARTAB_RANGE_CHAR;
1259 for (i = start, retval = 0; i < stop && retval == 0; i++)
1261 rainj.ch = MAKE_CHAR (charset, row, i);
1262 retval = (fn) (&rainj, cte->level2[i - 32], arg);
1270 map_over_other_charset (struct Lisp_Char_Table *ct, int lb,
1271 int (*fn) (struct chartab_range *range,
1272 Lisp_Object val, void *arg),
1275 Lisp_Object val = ct->level1[lb - MIN_LEADING_BYTE];
1276 Lisp_Object charset = CHARSET_BY_LEADING_BYTE (lb);
1278 if (!CHARSETP (charset)
1279 || lb == LEADING_BYTE_ASCII
1280 || lb == LEADING_BYTE_CONTROL_1)
1283 if (!CHAR_TABLE_ENTRYP (val))
1285 struct chartab_range rainj;
1287 rainj.type = CHARTAB_RANGE_CHARSET;
1288 rainj.charset = charset;
1289 return (fn) (&rainj, val, arg);
1293 struct Lisp_Char_Table_Entry *cte = XCHAR_TABLE_ENTRY (val);
1294 int charset94_p = (XCHARSET_CHARS (charset) == 94);
1295 int start = charset94_p ? 33 : 32;
1296 int stop = charset94_p ? 127 : 128;
1299 if (XCHARSET_DIMENSION (charset) == 1)
1301 struct chartab_range rainj;
1302 rainj.type = CHARTAB_RANGE_CHAR;
1304 for (i = start, retval = 0; i < stop && retval == 0; i++)
1306 rainj.ch = MAKE_CHAR (charset, i, 0);
1307 retval = (fn) (&rainj, cte->level2[i - 32], arg);
1312 for (i = start, retval = 0; i < stop && retval == 0; i++)
1313 retval = map_over_charset_row (cte, charset, i, fn, arg);
1322 /* Map FN (with client data ARG) over range RANGE in char table CT.
1323 Mapping stops the first time FN returns non-zero, and that value
1324 becomes the return value of map_char_table(). */
1327 map_char_table (struct Lisp_Char_Table *ct,
1328 struct chartab_range *range,
1329 int (*fn) (struct chartab_range *range,
1330 Lisp_Object val, void *arg),
1333 switch (range->type)
1335 case CHARTAB_RANGE_ALL:
1339 retval = map_over_charset_ascii (ct, fn, arg);
1343 retval = map_over_charset_control_1 (ct, fn, arg);
1348 int start = MIN_LEADING_BYTE;
1349 int stop = start + NUM_LEADING_BYTES;
1351 for (i = start, retval = 0; i < stop && retval == 0; i++)
1353 retval = map_over_other_charset (ct, i, fn, arg);
1361 case CHARTAB_RANGE_CHARSET:
1362 return map_over_other_charset (ct,
1363 XCHARSET_LEADING_BYTE (range->charset),
1366 case CHARTAB_RANGE_ROW:
1368 Lisp_Object val = ct->level1[XCHARSET_LEADING_BYTE (range->charset) - MIN_LEADING_BYTE];
1369 if (!CHAR_TABLE_ENTRYP (val))
1371 struct chartab_range rainj;
1373 rainj.type = CHARTAB_RANGE_ROW;
1374 rainj.charset = range->charset;
1375 rainj.row = range->row;
1376 return (fn) (&rainj, val, arg);
1379 return map_over_charset_row (XCHAR_TABLE_ENTRY (val),
1380 range->charset, range->row,
1385 case CHARTAB_RANGE_CHAR:
1387 Emchar ch = range->ch;
1388 Lisp_Object val = CHAR_TABLE_VALUE_UNSAFE (ct, ch);
1389 struct chartab_range rainj;
1391 rainj.type = CHARTAB_RANGE_CHAR;
1393 return (fn) (&rainj, val, arg);
1403 struct slow_map_char_table_arg
1405 Lisp_Object function;
1410 slow_map_char_table_fun (struct chartab_range *range,
1411 Lisp_Object val, void *arg)
1413 Lisp_Object ranjarg = Qnil;
1414 struct slow_map_char_table_arg *closure =
1415 (struct slow_map_char_table_arg *) arg;
1417 switch (range->type)
1419 case CHARTAB_RANGE_ALL:
1424 case CHARTAB_RANGE_CHARSET:
1425 ranjarg = XCHARSET_NAME (range->charset);
1428 case CHARTAB_RANGE_ROW:
1429 ranjarg = vector2 (XCHARSET_NAME (range->charset),
1430 make_int (range->row));
1433 case CHARTAB_RANGE_CHAR:
1434 ranjarg = make_char (range->ch);
1440 closure->retval = call2 (closure->function, ranjarg, val);
1441 return !NILP (closure->retval);
1444 DEFUN ("map-char-table", Fmap_char_table, 2, 3, 0, /*
1445 Map FUNCTION over entries in TABLE, calling it with two args,
1446 each key and value in the table.
1448 RANGE specifies a subrange to map over and is in the same format as
1449 the RANGE argument to `put-range-table'. If omitted or t, it defaults to
1452 (function, table, range))
1454 struct Lisp_Char_Table *ct;
1455 struct slow_map_char_table_arg slarg;
1456 struct gcpro gcpro1, gcpro2;
1457 struct chartab_range rainj;
1459 CHECK_CHAR_TABLE (table);
1460 ct = XCHAR_TABLE (table);
1463 decode_char_table_range (range, &rainj);
1464 slarg.function = function;
1465 slarg.retval = Qnil;
1466 GCPRO2 (slarg.function, slarg.retval);
1467 map_char_table (ct, &rainj, slow_map_char_table_fun, &slarg);
1470 return slarg.retval;
1475 /************************************************************************/
1476 /* Char table read syntax */
1477 /************************************************************************/
1480 chartab_type_validate (Lisp_Object keyword, Lisp_Object value,
1481 Error_behavior errb)
1483 /* #### should deal with ERRB */
1484 symbol_to_char_table_type (value);
1489 chartab_data_validate (Lisp_Object keyword, Lisp_Object value,
1490 Error_behavior errb)
1494 /* #### should deal with ERRB */
1495 EXTERNAL_LIST_LOOP (rest, value)
1497 Lisp_Object range = XCAR (rest);
1498 struct chartab_range dummy;
1502 signal_simple_error ("Invalid list format", value);
1505 if (!CONSP (XCDR (range))
1506 || !NILP (XCDR (XCDR (range))))
1507 signal_simple_error ("Invalid range format", range);
1508 decode_char_table_range (XCAR (range), &dummy);
1509 decode_char_table_range (XCAR (XCDR (range)), &dummy);
1512 decode_char_table_range (range, &dummy);
1519 chartab_instantiate (Lisp_Object data)
1521 Lisp_Object chartab;
1522 Lisp_Object type = Qgeneric;
1523 Lisp_Object dataval = Qnil;
1525 while (!NILP (data))
1527 Lisp_Object keyw = Fcar (data);
1533 if (EQ (keyw, Qtype))
1535 else if (EQ (keyw, Qdata))
1539 chartab = Fmake_char_table (type);
1542 while (!NILP (data))
1544 Lisp_Object range = Fcar (data);
1545 Lisp_Object val = Fcar (Fcdr (data));
1547 data = Fcdr (Fcdr (data));
1550 if (CHAR_OR_CHAR_INTP (XCAR (range)))
1552 Emchar first = XCHAR_OR_CHAR_INT (Fcar (range));
1553 Emchar last = XCHAR_OR_CHAR_INT (Fcar (Fcdr (range)));
1556 for (i = first; i <= last; i++)
1557 Fput_char_table (make_char (i), val, chartab);
1563 Fput_char_table (range, val, chartab);
1572 /************************************************************************/
1573 /* Category Tables, specifically */
1574 /************************************************************************/
1576 DEFUN ("category-table-p", Fcategory_table_p, 1, 1, 0, /*
1577 Return t if ARG is a category table.
1578 A category table is a type of char table used for keeping track of
1579 categories. Categories are used for classifying characters for use
1580 in regexps -- you can refer to a category rather than having to use
1581 a complicated [] expression (and category lookups are significantly
1584 There are 95 different categories available, one for each printable
1585 character (including space) in the ASCII charset. Each category
1586 is designated by one such character, called a "category designator".
1587 They are specified in a regexp using the syntax "\\cX", where X is
1588 a category designator.
1590 A category table specifies, for each character, the categories that
1591 the character is in. Note that a character can be in more than one
1592 category. More specifically, a category table maps from a character
1593 to either the value nil (meaning the character is in no categories)
1594 or a 95-element bit vector, specifying for each of the 95 categories
1595 whether the character is in that category.
1597 Special Lisp functions are provided that abstract this, so you do not
1598 have to directly manipulate bit vectors.
1602 return (CHAR_TABLEP (obj) &&
1603 XCHAR_TABLE_TYPE (obj) == CHAR_TABLE_TYPE_CATEGORY) ?
1608 check_category_table (Lisp_Object obj, Lisp_Object def)
1612 while (NILP (Fcategory_table_p (obj)))
1613 obj = wrong_type_argument (Qcategory_table_p, obj);
1618 check_category_char (Emchar ch, Lisp_Object table,
1619 unsigned int designator, unsigned int not)
1621 REGISTER Lisp_Object temp;
1622 struct Lisp_Char_Table *ctbl;
1623 #ifdef ERROR_CHECK_TYPECHECK
1624 if (NILP (Fcategory_table_p (table)))
1625 signal_simple_error ("Expected category table", table);
1627 ctbl = XCHAR_TABLE (table);
1628 temp = get_char_table (ch, ctbl);
1633 return bit_vector_bit (XBIT_VECTOR (temp), designator) ? !not : not;
1636 DEFUN ("check-category-at", Fcheck_category_at, 2, 4, 0, /*
1637 Return t if category of a character at POS includes DESIGNATOR,
1638 else return nil. Optional third arg specifies which buffer
1639 \(defaulting to current), and fourth specifies the CATEGORY-TABLE,
1640 \(defaulting to the buffer's category table).
1642 (pos, designator, buffer, category_table))
1647 struct buffer *buf = decode_buffer (buffer, 0);
1650 CHECK_CATEGORY_DESIGNATOR (designator);
1651 des = XCHAR (designator);
1652 ctbl = check_category_table (category_table, Vstandard_category_table);
1653 ch = BUF_FETCH_CHAR (buf, XINT (pos));
1654 return check_category_char (ch, ctbl, des, 0) ? Qt : Qnil;
1657 DEFUN ("char-in-category-p", Fchar_in_category_p, 2, 3, 0, /*
1658 Return t if category of character CHR includes DESIGNATOR, else nil.
1659 Optional third arg specifies the CATEGORY-TABLE to use,
1660 which defaults to the system default table.
1662 (chr, designator, category_table))
1668 CHECK_CATEGORY_DESIGNATOR (designator);
1669 des = XCHAR (designator);
1672 ctbl = check_category_table (category_table, Vstandard_category_table);
1673 return check_category_char (ch, ctbl, des, 0) ? Qt : Qnil;
1676 DEFUN ("category-table", Fcategory_table, 0, 1, 0, /*
1677 Return the current category table.
1678 This is the one specified by the current buffer, or by BUFFER if it
1683 return decode_buffer (buffer, 0)->category_table;
1686 DEFUN ("standard-category-table", Fstandard_category_table, 0, 0, 0, /*
1687 Return the standard category table.
1688 This is the one used for new buffers.
1692 return Vstandard_category_table;
1695 DEFUN ("copy-category-table", Fcopy_category_table, 0, 1, 0, /*
1696 Construct a new category table and return it.
1697 It is a copy of the TABLE, which defaults to the standard category table.
1701 if (NILP (Vstandard_category_table))
1702 return Fmake_char_table (Qcategory);
1704 table = check_category_table (table, Vstandard_category_table);
1705 return Fcopy_char_table (table);
1708 DEFUN ("set-category-table", Fset_category_table, 1, 2, 0, /*
1709 Select a new category table for BUFFER.
1710 One argument, a category table.
1711 BUFFER defaults to the current buffer if omitted.
1715 struct buffer *buf = decode_buffer (buffer, 0);
1716 table = check_category_table (table, Qnil);
1717 buf->category_table = table;
1718 /* Indicate that this buffer now has a specified category table. */
1719 buf->local_var_flags |= XINT (buffer_local_flags.category_table);
1723 DEFUN ("category-designator-p", Fcategory_designator_p, 1, 1, 0, /*
1724 Return t if ARG is a category designator (a char in the range ' ' to '~').
1728 return CATEGORY_DESIGNATORP (obj) ? Qt : Qnil;
1731 DEFUN ("category-table-value-p", Fcategory_table_value_p, 1, 1, 0, /*
1732 Return t if ARG is a category table value.
1733 Valid values are nil or a bit vector of size 95.
1737 return CATEGORY_TABLE_VALUEP (obj) ? Qt : Qnil;
1741 #define CATEGORYP(x) \
1742 (CHARP (x) && XCHAR (x) >= 0x20 && XCHAR (x) <= 0x7E)
1744 #define CATEGORY_SET(c) \
1745 (get_char_table(c, XCHAR_TABLE(current_buffer->category_table)))
1747 /* Return 1 if CATEGORY_SET contains CATEGORY, else return 0.
1748 The faster version of `!NILP (Faref (category_set, category))'. */
1749 #define CATEGORY_MEMBER(category, category_set) \
1750 (bit_vector_bit(XBIT_VECTOR (category_set), category - 32))
1752 /* Return 1 if there is a word boundary between two word-constituent
1753 characters C1 and C2 if they appear in this order, else return 0.
1754 Use the macro WORD_BOUNDARY_P instead of calling this function
1757 int word_boundary_p (Emchar c1, Emchar c2);
1759 word_boundary_p (Emchar c1, Emchar c2)
1761 Lisp_Object category_set1, category_set2;
1766 if (COMPOSITE_CHAR_P (c1))
1767 c1 = cmpchar_component (c1, 0, 1);
1768 if (COMPOSITE_CHAR_P (c2))
1769 c2 = cmpchar_component (c2, 0, 1);
1772 if (EQ (CHAR_CHARSET (c1), CHAR_CHARSET (c2)))
1774 tail = Vword_separating_categories;
1779 tail = Vword_combining_categories;
1783 category_set1 = CATEGORY_SET (c1);
1784 if (NILP (category_set1))
1785 return default_result;
1786 category_set2 = CATEGORY_SET (c2);
1787 if (NILP (category_set2))
1788 return default_result;
1790 for (; CONSP (tail); tail = XCONS (tail)->cdr)
1792 Lisp_Object elt = XCONS(tail)->car;
1795 && CATEGORYP (XCONS (elt)->car)
1796 && CATEGORYP (XCONS (elt)->cdr)
1797 && CATEGORY_MEMBER (XCHAR (XCONS (elt)->car), category_set1)
1798 && CATEGORY_MEMBER (XCHAR (XCONS (elt)->cdr), category_set2))
1799 return !default_result;
1801 return default_result;
1807 syms_of_chartab (void)
1810 defsymbol (&Qcategory_table_p, "category-table-p");
1811 defsymbol (&Qcategory_designator_p, "category-designator-p");
1812 defsymbol (&Qcategory_table_value_p, "category-table-value-p");
1815 defsymbol (&Qchar_table, "char-table");
1816 defsymbol (&Qchar_tablep, "char-table-p");
1818 DEFSUBR (Fchar_table_p);
1819 DEFSUBR (Fchar_table_type_list);
1820 DEFSUBR (Fvalid_char_table_type_p);
1821 DEFSUBR (Fchar_table_type);
1822 DEFSUBR (Freset_char_table);
1823 DEFSUBR (Fmake_char_table);
1824 DEFSUBR (Fcopy_char_table);
1825 DEFSUBR (Fget_char_table);
1826 DEFSUBR (Fget_range_char_table);
1827 DEFSUBR (Fvalid_char_table_value_p);
1828 DEFSUBR (Fcheck_valid_char_table_value);
1829 DEFSUBR (Fput_char_table);
1830 DEFSUBR (Fmap_char_table);
1833 DEFSUBR (Fcategory_table_p);
1834 DEFSUBR (Fcategory_table);
1835 DEFSUBR (Fstandard_category_table);
1836 DEFSUBR (Fcopy_category_table);
1837 DEFSUBR (Fset_category_table);
1838 DEFSUBR (Fcheck_category_at);
1839 DEFSUBR (Fchar_in_category_p);
1840 DEFSUBR (Fcategory_designator_p);
1841 DEFSUBR (Fcategory_table_value_p);
1847 vars_of_chartab (void)
1849 /* DO NOT staticpro this. It works just like Vweak_hash_tables. */
1850 Vall_syntax_tables = Qnil;
1851 pdump_wire_list (&Vall_syntax_tables);
1855 structure_type_create_chartab (void)
1857 struct structure_type *st;
1859 st = define_structure_type (Qchar_table, 0, chartab_instantiate);
1861 define_structure_type_keyword (st, Qtype, chartab_type_validate);
1862 define_structure_type_keyword (st, Qdata, chartab_data_validate);
1866 complex_vars_of_chartab (void)
1869 /* Set this now, so first buffer creation can refer to it. */
1870 /* Make it nil before calling copy-category-table
1871 so that copy-category-table will know not to try to copy from garbage */
1872 Vstandard_category_table = Qnil;
1873 Vstandard_category_table = Fcopy_category_table (Qnil);
1874 staticpro (&Vstandard_category_table);
1876 DEFVAR_LISP ("word-combining-categories", &Vword_combining_categories /*
1877 List of pair (cons) of categories to determine word boundary.
1879 Emacs treats a sequence of word constituent characters as a single
1880 word (i.e. finds no word boundary between them) iff they belongs to
1881 the same charset. But, exceptions are allowed in the following cases.
1883 (1) The case that characters are in different charsets is controlled
1884 by the variable `word-combining-categories'.
1886 Emacs finds no word boundary between characters of different charsets
1887 if they have categories matching some element of this list.
1889 More precisely, if an element of this list is a cons of category CAT1
1890 and CAT2, and a multibyte character C1 which has CAT1 is followed by
1891 C2 which has CAT2, there's no word boundary between C1 and C2.
1893 For instance, to tell that ASCII characters and Latin-1 characters can
1894 form a single word, the element `(?l . ?l)' should be in this list
1895 because both characters have the category `l' (Latin characters).
1897 (2) The case that character are in the same charset is controlled by
1898 the variable `word-separating-categories'.
1900 Emacs find a word boundary between characters of the same charset
1901 if they have categories matching some element of this list.
1903 More precisely, if an element of this list is a cons of category CAT1
1904 and CAT2, and a multibyte character C1 which has CAT1 is followed by
1905 C2 which has CAT2, there's a word boundary between C1 and C2.
1907 For instance, to tell that there's a word boundary between Japanese
1908 Hiragana and Japanese Kanji (both are in the same charset), the
1909 element `(?H . ?C) should be in this list.
1912 Vword_combining_categories = Qnil;
1914 DEFVAR_LISP ("word-separating-categories", &Vword_separating_categories /*
1915 List of pair (cons) of categories to determine word boundary.
1916 See the documentation of the variable `word-combining-categories'.
1919 Vword_separating_categories = Qnil;