/* GNU Emacs routines to deal with category tables.
- Copyright (C) 1998, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Copyright (C) 1998, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Free Software Foundation, Inc.
Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007
+ 2005, 2006, 2007, 2008, 2009, 2010, 2011
National Institute of Advanced Industrial Science and Technology (AIST)
Registration Number H14PRO021
+ Copyright (C) 2003
+ National Institute of Advanced Industrial Science and Technology (AIST)
+ Registration Number H13PRO009
This file is part of GNU Emacs.
-GNU Emacs is free software; you can redistribute it and/or modify
+GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
/* Here we handle three objects: category, category set, and category
#include <config.h>
#include <ctype.h>
+#include <setjmp.h>
#include "lisp.h"
#include "buffer.h"
+#include "character.h"
#include "charset.h"
#include "category.h"
#include "keymap.h"
\f
/* Category set staff. */
+static Lisp_Object hash_get_category_set P_ ((Lisp_Object, Lisp_Object));
+
+static Lisp_Object
+hash_get_category_set (table, category_set)
+ Lisp_Object table, category_set;
+{
+ Lisp_Object val;
+ struct Lisp_Hash_Table *h;
+ int i;
+ unsigned hash;
+
+ if (NILP (XCHAR_TABLE (table)->extras[1]))
+ XCHAR_TABLE (table)->extras[1]
+ = make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE),
+ make_float (DEFAULT_REHASH_SIZE),
+ make_float (DEFAULT_REHASH_THRESHOLD),
+ Qnil, Qnil, Qnil);
+ h = XHASH_TABLE (XCHAR_TABLE (table)->extras[1]);
+ i = hash_lookup (h, category_set, &hash);
+ if (i >= 0)
+ return HASH_KEY (h, i);
+ hash_put (h, category_set, Qnil, hash);
+ return category_set;
+}
+
+
DEFUN ("make-category-set", Fmake_category_set, Smake_category_set, 1, 1, 0,
doc: /* Return a newly created category-set which contains CATEGORIES.
CATEGORIES is a string of category mnemonics.
DEFUN ("define-category", Fdefine_category, Sdefine_category, 2, 3, 0,
doc: /* Define CATEGORY as a category which is described by DOCSTRING.
CATEGORY should be an ASCII printing character in the range ` ' to `~'.
-DOCSTRING is the documentation string of the category.
+DOCSTRING is the documentation string of the category. The first line
+should be a terse text (preferably less than 16 characters),
+and the rest lines should be the full description.
The category is defined only in category table TABLE, which defaults to
the current buffer's category table. */)
(category, docstring, table)
if (!NILP (CATEGORY_DOCSTRING (table, XFASTINT (category))))
error ("Category `%c' is already defined", XFASTINT (category));
+ if (!NILP (Vpurify_flag))
+ docstring = Fpurecopy (docstring);
CATEGORY_DOCSTRING (table, XFASTINT (category)) = docstring;
return Qnil;
return Vstandard_category_table;
}
+
+static void
+copy_category_entry (table, c, val)
+ Lisp_Object table, c, val;
+{
+ val = Fcopy_sequence (val);
+ if (CONSP (c))
+ char_table_set_range (table, XINT (XCAR (c)), XINT (XCDR (c)), val);
+ else
+ char_table_set (table, XINT (c), val);
+}
+
/* Return a copy of category table TABLE. We can't simply use the
function copy-sequence because no contents should be shared between
the original and the copy. This function is called recursively by
copy_category_table (table)
Lisp_Object table;
{
- Lisp_Object tmp;
- int i, to;
-
- if (!NILP (XCHAR_TABLE (table)->top))
- {
- /* TABLE is a top level char table.
- At first, make a copy of tree structure of the table. */
- table = Fcopy_sequence (table);
-
- /* Then, copy elements for single byte characters one by one. */
- for (i = 0; i < CHAR_TABLE_SINGLE_BYTE_SLOTS; i++)
- if (!NILP (tmp = XCHAR_TABLE (table)->contents[i]))
- XCHAR_TABLE (table)->contents[i] = Fcopy_sequence (tmp);
- to = CHAR_TABLE_ORDINARY_SLOTS;
-
- /* Also copy the first (and sole) extra slot. It is a vector
- containing docstring of each category. */
- Fset_char_table_extra_slot
- (table, make_number (0),
- Fcopy_sequence (Fchar_table_extra_slot (table, make_number (0))));
- }
- else
- {
- i = 32;
- to = SUB_CHAR_TABLE_ORDINARY_SLOTS;
- }
-
- /* If the table has non-nil default value, copy it. */
- if (!NILP (tmp = XCHAR_TABLE (table)->defalt))
- XCHAR_TABLE (table)->defalt = Fcopy_sequence (tmp);
+ table = copy_char_table (table);
- /* At last, copy the remaining elements while paying attention to a
- sub char table. */
- for (; i < to; i++)
- if (!NILP (tmp = XCHAR_TABLE (table)->contents[i]))
- XCHAR_TABLE (table)->contents[i]
- = (SUB_CHAR_TABLE_P (tmp)
- ? copy_category_table (tmp) : Fcopy_sequence (tmp));
+ if (! NILP (XCHAR_TABLE (table)->defalt))
+ XCHAR_TABLE (table)->defalt
+ = Fcopy_sequence (XCHAR_TABLE (table)->defalt);
+ XCHAR_TABLE (table)->extras[0]
+ = Fcopy_sequence (XCHAR_TABLE (table)->extras[0]);
+ map_char_table (copy_category_entry, Qnil, table, table);
return table;
}
()
{
Lisp_Object val;
+ int i;
val = Fmake_char_table (Qcategory_table, Qnil);
XCHAR_TABLE (val)->defalt = MAKE_CATEGORY_SET;
+ for (i = 0; i < (1 << CHARTAB_SIZE_BITS_0); i++)
+ XCHAR_TABLE (val)->contents[i] = MAKE_CATEGORY_SET;
Fset_char_table_extra_slot (val, make_number (0),
Fmake_vector (make_number (95), Qnil));
return val;
}
\f
+Lisp_Object
+char_category_set (c)
+ int c;
+{
+ return CHAR_TABLE_REF (current_buffer->category_table, c);
+}
+
DEFUN ("char-category-set", Fchar_category_set, Schar_category_set, 1, 1, 0,
doc: /* Return the category set of CHAR.
usage: (char-category-set CHAR) */)
return build_string (str);
}
-/* Modify all category sets stored under sub char-table TABLE so that
- they contain (SET_VALUE is t) or don't contain (SET_VALUE is nil)
- CATEGORY. */
-
-void
-modify_lower_category_set (table, category, set_value)
- Lisp_Object table, category, set_value;
-{
- Lisp_Object val;
- int i;
-
- val = XCHAR_TABLE (table)->defalt;
- if (!CATEGORY_SET_P (val))
- val = MAKE_CATEGORY_SET;
- SET_CATEGORY_SET (val, category, set_value);
- XCHAR_TABLE (table)->defalt = val;
-
- for (i = 32; i < SUB_CHAR_TABLE_ORDINARY_SLOTS; i++)
- {
- val = XCHAR_TABLE (table)->contents[i];
-
- if (CATEGORY_SET_P (val))
- SET_CATEGORY_SET (val, category, set_value);
- else if (SUB_CHAR_TABLE_P (val))
- modify_lower_category_set (val, category, set_value);
- }
-}
-
void
set_category_set (category_set, category, val)
Lisp_Object category_set, category, val;
Smodify_category_entry, 2, 4, 0,
doc: /* Modify the category set of CHARACTER by adding CATEGORY to it.
The category is changed only for table TABLE, which defaults to
- the current buffer's category table.
+the current buffer's category table.
+CHARACTER can be either a single character or a cons representing the
+lower and upper ends of an inclusive character range to modify.
If optional fourth argument RESET is non-nil,
then delete CATEGORY from the category set instead of adding it. */)
(character, category, table, reset)
Lisp_Object character, category, table, reset;
{
- int c, charset, c1, c2;
Lisp_Object set_value; /* Actual value to be set in category sets. */
- Lisp_Object val, category_set;
-
- CHECK_NUMBER (character);
- c = XINT (character);
- CHECK_CATEGORY (category);
- table = check_category_table (table);
-
- if (NILP (CATEGORY_DOCSTRING (table, XFASTINT (category))))
- error ("Undefined category: %c", XFASTINT (category));
-
- set_value = NILP (reset) ? Qt : Qnil;
-
- if (c < CHAR_TABLE_SINGLE_BYTE_SLOTS)
- {
- val = XCHAR_TABLE (table)->contents[c];
- if (!CATEGORY_SET_P (val))
- XCHAR_TABLE (table)->contents[c] = (val = MAKE_CATEGORY_SET);
- SET_CATEGORY_SET (val, category, set_value);
- return Qnil;
- }
-
- SPLIT_CHAR (c, charset, c1, c2);
-
- /* The top level table. */
- val = XCHAR_TABLE (table)->contents[charset + 128];
- if (CATEGORY_SET_P (val))
- category_set = val;
- else if (!SUB_CHAR_TABLE_P (val))
- {
- category_set = val = MAKE_CATEGORY_SET;
- XCHAR_TABLE (table)->contents[charset + 128] = category_set;
- }
+ Lisp_Object category_set;
+ int start, end;
+ int from, to;
- if (c1 <= 0)
+ if (INTEGERP (character))
{
- /* Only a charset is specified. */
- if (SUB_CHAR_TABLE_P (val))
- /* All characters in CHARSET should be the same as for having
- CATEGORY or not. */
- modify_lower_category_set (val, category, set_value);
- else
- SET_CATEGORY_SET (category_set, category, set_value);
- return Qnil;
+ CHECK_CHARACTER (character);
+ start = end = XFASTINT (character);
}
-
- /* The second level table. */
- if (!SUB_CHAR_TABLE_P (val))
+ else
{
- val = make_sub_char_table (Qnil);
- XCHAR_TABLE (table)->contents[charset + 128] = val;
- /* We must set default category set of CHARSET in `defalt' slot. */
- XCHAR_TABLE (val)->defalt = category_set;
+ CHECK_CONS (character);
+ CHECK_CHARACTER_CAR (character);
+ CHECK_CHARACTER_CDR (character);
+ start = XFASTINT (XCAR (character));
+ end = XFASTINT (XCDR (character));
}
- table = val;
- val = XCHAR_TABLE (table)->contents[c1];
- if (CATEGORY_SET_P (val))
- category_set = val;
- else if (!SUB_CHAR_TABLE_P (val))
- {
- category_set = val = Fcopy_sequence (XCHAR_TABLE (table)->defalt);
- XCHAR_TABLE (table)->contents[c1] = category_set;
- }
+ CHECK_CATEGORY (category);
+ table = check_category_table (table);
- if (c2 <= 0)
- {
- if (SUB_CHAR_TABLE_P (val))
- /* All characters in C1 group of CHARSET should be the same as
- for CATEGORY. */
- modify_lower_category_set (val, category, set_value);
- else
- SET_CATEGORY_SET (category_set, category, set_value);
- return Qnil;
- }
+ if (NILP (CATEGORY_DOCSTRING (table, XFASTINT (category))))
+ error ("Undefined category: %c", XFASTINT (category));
- /* The third (bottom) level table. */
- if (!SUB_CHAR_TABLE_P (val))
- {
- val = make_sub_char_table (Qnil);
- XCHAR_TABLE (table)->contents[c1] = val;
- /* We must set default category set of CHARSET and C1 in
- `defalt' slot. */
- XCHAR_TABLE (val)->defalt = category_set;
- }
- table = val;
+ set_value = NILP (reset) ? Qt : Qnil;
- val = XCHAR_TABLE (table)->contents[c2];
- if (CATEGORY_SET_P (val))
- category_set = val;
- else if (!SUB_CHAR_TABLE_P (val))
+ while (start <= end)
{
- category_set = Fcopy_sequence (XCHAR_TABLE (table)->defalt);
- XCHAR_TABLE (table)->contents[c2] = category_set;
+ from = start, to = end;
+ category_set = char_table_ref_and_range (table, start, &from, &to);
+ if (CATEGORY_MEMBER (XFASTINT (category), category_set) != NILP (reset))
+ {
+ category_set = Fcopy_sequence (category_set);
+ SET_CATEGORY_SET (category_set, category, set_value);
+ category_set = hash_get_category_set (table, category_set);
+ char_table_set_range (table, start, to, category_set);
+ }
+ start = to + 1;
}
- else
- /* This should never happen. */
- error ("Invalid category table");
-
- SET_CATEGORY_SET (category_set, category, set_value);
return Qnil;
}
Lisp_Object tail;
int default_result;
- if (CHAR_CHARSET (c1) == CHAR_CHARSET (c2))
+ if (EQ (CHAR_TABLE_REF (Vchar_script_table, c1),
+ CHAR_TABLE_REF (Vchar_script_table, c2)))
{
tail = Vword_separating_categories;
default_result = 0;
Lisp_Object elt = XCAR (tail);
if (CONSP (elt)
- && CATEGORYP (XCAR (elt))
- && CATEGORYP (XCDR (elt))
- && CATEGORY_MEMBER (XFASTINT (XCAR (elt)), category_set1)
- && CATEGORY_MEMBER (XFASTINT (XCDR (elt)), category_set2))
+ && (NILP (XCAR (elt))
+ || (CATEGORYP (XCAR (elt))
+ && CATEGORY_MEMBER (XFASTINT (XCAR (elt)), category_set1)
+ && ! CATEGORY_MEMBER (XFASTINT (XCAR (elt)), category_set2)))
+ && (NILP (XCDR (elt))
+ || (CATEGORYP (XCDR (elt))
+ && ! CATEGORY_MEMBER (XFASTINT (XCDR (elt)), category_set1)
+ && CATEGORY_MEMBER (XFASTINT (XCDR (elt)), category_set2))))
return !default_result;
}
return default_result;
init_category_once ()
{
/* This has to be done here, before we call Fmake_char_table. */
- Qcategory_table = intern ("category-table");
+ Qcategory_table = intern_c_string ("category-table");
staticpro (&Qcategory_table);
/* Intern this now in case it isn't already done.
Setting this variable twice is harmless.
But don't staticpro it here--that is done in alloc.c. */
- Qchar_table_extra_slots = intern ("char-table-extra-slots");
+ Qchar_table_extra_slots = intern_c_string ("char-table-extra-slots");
/* Now we are ready to set up this property, so we can
create category tables. */
void
syms_of_category ()
{
- Qcategoryp = intern ("categoryp");
+ Qcategoryp = intern_c_string ("categoryp");
staticpro (&Qcategoryp);
- Qcategorysetp = intern ("categorysetp");
+ Qcategorysetp = intern_c_string ("categorysetp");
staticpro (&Qcategorysetp);
- Qcategory_table_p = intern ("category-table-p");
+ Qcategory_table_p = intern_c_string ("category-table-p");
staticpro (&Qcategory_table_p);
DEFVAR_LISP ("word-combining-categories", &Vword_combining_categories,
doc: /* List of pair (cons) of categories to determine word boundary.
Emacs treats a sequence of word constituent characters as a single
-word (i.e. finds no word boundary between them) iff they belongs to
-the same charset. But, exceptions are allowed in the following cases.
+word (i.e. finds no word boundary between them) only if they belong to
+the same script. But, exceptions are allowed in the following cases.
-\(1) The case that characters are in different charsets is controlled
+\(1) The case that characters are in different scripts is controlled
by the variable `word-combining-categories'.
-Emacs finds no word boundary between characters of different charsets
+Emacs finds no word boundary between characters of different scripts
if they have categories matching some element of this list.
More precisely, if an element of this list is a cons of category CAT1
and CAT2, and a multibyte character C1 which has CAT1 is followed by
C2 which has CAT2, there's no word boundary between C1 and C2.
-For instance, to tell that ASCII characters and Latin-1 characters can
-form a single word, the element `(?l . ?l)' should be in this list
-because both characters have the category `l' (Latin characters).
+For instance, to tell that Han characters followed by Hiragana
+characters can form a single word, the element `(?C . ?H)' should be
+in this list.
-\(2) The case that character are in the same charset is controlled by
+\(2) The case that character are in the same script is controlled by
the variable `word-separating-categories'.
-Emacs find a word boundary between characters of the same charset
+Emacs finds a word boundary between characters of the same script
if they have categories matching some element of this list.
More precisely, if an element of this list is a cons of category CAT1
-and CAT2, and a multibyte character C1 which has CAT1 is followed by
-C2 which has CAT2, there's a word boundary between C1 and C2.
+and CAT2, and a multibyte character C1 which has CAT1 but not CAT2 is
+followed by C2 which has CAT2 but not CAT1, there's a word boundary
+between C1 and C2.
-For instance, to tell that there's a word boundary between Japanese
-Hiragana and Japanese Kanji (both are in the same charset), the
-element `(?H . ?C) should be in this list. */);
+For instance, to tell that there's a word boundary between Hiragana
+and Katakana (both are in the same script `kana'),
+the element `(?H . ?K) should be in this list. */);
Vword_combining_categories = Qnil;