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comparison src/chartab.h @ 70:131b0175ea99 r20-0b30

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Import from CVS: tag r20-0b30
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date Mon, 13 Aug 2007 09:02:59 +0200
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69:804d1389bcd6 70:131b0175ea99
1 /* Declarations having to do with Mule char tables.
2 Copyright (C) 1992 Free Software Foundation, Inc.
3 Copyright (C) 1995 Sun Microsystems, Inc.
4
5 This file is part of XEmacs.
6
7 XEmacs is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
10 later version.
11
12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with XEmacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21
22 /* Synched up with: Mule 2.3. Not synched with FSF.
23
24 This file was written independently of the FSF implementation,
25 and is not compatible. */
26
27 #ifndef _MULE_CHARTAB_H
28 #define _MULE_CHARTAB_H
29
30 /************************************************************************/
31 /* Char Tables */
32 /************************************************************************/
33
34 /* Under Mule, we use a complex representation (see below).
35 When not under Mule, there are only 256 possible characters
36 so we just represent them directly. */
37
38 #ifdef MULE
39
40 DECLARE_LRECORD (char_table_entry, struct Lisp_Char_Table_Entry);
41 #define XCHAR_TABLE_ENTRY(x) \
42 XRECORD (x, char_table_entry, struct Lisp_Char_Table_Entry)
43 #define XSETCHAR_TABLE_ENTRY(x, p) XSETRECORD (x, p, char_table_entry)
44 #define CHAR_TABLE_ENTRYP(x) RECORDP (x, char_table_entry)
45 #define GC_CHAR_TABLE_ENTRYP(x) GC_RECORDP (x, char_table_entry)
46 /* #define CHECK_CHAR_TABLE_ENTRY(x) CHECK_RECORD (x, char_table_entry)
47 char table entries should never escape to Lisp */
48
49 struct Lisp_Char_Table_Entry
50 {
51 struct lcrecord_header header;
52
53 /* In the interests of simplicity, we just use a fixed 96-entry
54 table. If we felt like being smarter, we could make this
55 variable-size and add an offset value into this structure. */
56 Lisp_Object level2[96];
57 };
58
59 #endif /* MULE */
60
61 DECLARE_LRECORD (char_table, struct Lisp_Char_Table);
62 #define XCHAR_TABLE(x) \
63 XRECORD (x, char_table, struct Lisp_Char_Table)
64 #define XSETCHAR_TABLE(x, p) XSETRECORD (x, p, char_table)
65 #define CHAR_TABLEP(x) RECORDP (x, char_table)
66 #define GC_CHAR_TABLEP(x) GC_RECORDP (x, char_table)
67 #define CHECK_CHAR_TABLE(x) CHECK_RECORD (x, char_table)
68 #define CONCHECK_CHAR_TABLE(x) CONCHECK_RECORD (x, char_table)
69
70 #define CHAR_TABLE_TYPE(ct) ((ct)->type)
71 #define XCHAR_TABLE_TYPE(ct) CHAR_TABLE_TYPE (XCHAR_TABLE (ct))
72
73 enum char_table_type
74 {
75 CHAR_TABLE_TYPE_GENERIC,
76 #ifdef MULE
77 CHAR_TABLE_TYPE_CATEGORY,
78 #endif
79 CHAR_TABLE_TYPE_SYNTAX,
80 CHAR_TABLE_TYPE_DISPLAY,
81 CHAR_TABLE_TYPE_CHAR
82 };
83
84 #ifdef MULE
85 #define NUM_ASCII_CHARS 160
86 #else
87 #define NUM_ASCII_CHARS 256
88 #endif
89
90 struct Lisp_Char_Table
91 {
92 struct lcrecord_header header;
93
94 Lisp_Object ascii[NUM_ASCII_CHARS];
95
96 #ifdef MULE
97 /* We basically duplicate the Mule vectors-of-vectors implementation.
98 We can do this because we know a great deal about the sorts of
99 things we are going to be indexing.
100
101 The current implementation is as follows:
102
103 ascii[0-159] is used for ASCII and Control-1 characters.
104
105 level1[0 .. (NUM_LEADING_BYTES-1)] indexes charsets by leading
106 byte (subtract MIN_LEADING_BYTE from the leading byte). If the
107 value of this is not an opaque, then it specifies a value for all
108 characters in the charset. Otherwise, it will be a
109 96-Lisp-Object opaque that we created, specifying a value for
110 each row. If the value of this is not an opaque, then it
111 specifies a value for all characters in the row. Otherwise, it
112 will be a 96-Lisp-Object opaque that we created, specifying a
113 value for each character.
114
115 NOTE: 1) This will fail if some C routine passes an opaque to
116 Fput_char_table(). Currently this is not a problem
117 since all char tables that are created are Lisp-visible
118 and thus no one should ever be putting an opaque in
119 a char table. Another possibility is to consider
120 adding a type to */
121
122 Lisp_Object level1[NUM_LEADING_BYTES];
123
124 #endif /* MULE */
125
126 enum char_table_type type;
127
128 /* stuff used for syntax tables */
129 Lisp_Object mirror_table;
130 Lisp_Object next_table; /* DO NOT mark through this. */
131 };
132
133 #ifdef MULE
134
135 Lisp_Object get_non_ascii_char_table_value (struct Lisp_Char_Table *ct,
136 int leading_byte,
137 Emchar c);
138
139 INLINE Lisp_Object CHAR_TABLE_NON_ASCII_VALUE_UNSAFE (struct
140 Lisp_Char_Table *ct,
141 Emchar ch);
142 INLINE Lisp_Object
143 CHAR_TABLE_NON_ASCII_VALUE_UNSAFE (struct Lisp_Char_Table *ct, Emchar ch)
144 {
145 unsigned char lb = CHAR_LEADING_BYTE (ch);
146 if (!CHAR_TABLE_ENTRYP ((ct)->level1[lb - MIN_LEADING_BYTE]))
147 return (ct)->level1[lb - MIN_LEADING_BYTE];
148 else
149 return get_non_ascii_char_table_value (ct, lb, ch);
150 }
151
152 #define CHAR_TABLE_VALUE_UNSAFE(ct, ch) \
153 ((ch) < NUM_ASCII_CHARS \
154 ? (ct)->ascii[ch] \
155 : CHAR_TABLE_NON_ASCII_VALUE_UNSAFE (ct, ch))
156
157 #else /* not MULE */
158
159 #define CHAR_TABLE_VALUE_UNSAFE(ct, ch) ((ct)->ascii[(unsigned char) (ch)])
160
161 #endif /* not MULE */
162
163 enum chartab_range_type
164 {
165 CHARTAB_RANGE_ALL,
166 #ifdef MULE
167 CHARTAB_RANGE_CHARSET,
168 CHARTAB_RANGE_ROW,
169 #endif
170 CHARTAB_RANGE_CHAR
171 };
172
173 struct chartab_range
174 {
175 enum chartab_range_type type;
176 Emchar ch;
177 Lisp_Object charset;
178 int row;
179 };
180
181 void fill_char_table (struct Lisp_Char_Table *ct, Lisp_Object value);
182 void put_char_table (struct Lisp_Char_Table *ct, struct chartab_range *range,
183 Lisp_Object val);
184 int map_char_table (struct Lisp_Char_Table *ct,
185 struct chartab_range *range,
186 int (*fn) (struct chartab_range *range,
187 Lisp_Object val, void *arg),
188 void *arg);
189 void prune_syntax_tables (int (*obj_marked_p) (Lisp_Object));
190 extern Lisp_Object Vall_syntax_tables;
191
192
193
194 #ifdef MULE
195
196 extern Lisp_Object Qcategory_table_p, Qcategory_designator_p;
197 extern Lisp_Object Qcategory_table_value_p;
198
199 extern Lisp_Object Vstandard_category_table;
200
201 #define CATEGORY_DESIGNATORP(x) \
202 (CHARP (x) && XCHAR (x) >= 32 && XCHAR (x) <= 126)
203
204 #define CHECK_CATEGORY_DESIGNATOR(x) \
205 do { if (!CATEGORY_DESIGNATORP (x)) \
206 dead_wrong_type_argument (Qcategory_designator_p, (x)); } while (0)
207 #define CONCHECK_CATEGORY_DESIGNATOR(x) \
208 do { if (!CATEGORY_DESIGNATORP (x)) \
209 x = wrong_type_argument (Qcategory_designator_p, (x)); } while (0)
210
211 #define CATEGORY_TABLE_VALUEP(x) \
212 (NILP (x) || (BIT_VECTORP (x) && (bit_vector_length (XBIT_VECTOR (x)) == 95)))
213
214 #define CHECK_CATEGORY_TABLE_VALUE(x) \
215 do { if (!CATEGORY_TABLE_VALUEP (x)) \
216 dead_wrong_type_argument (Qcategory_table_value_p, (x)); } \
217 while (0)
218 #define CONCHECK_CATEGORY_TABLE_VALUE(x) \
219 do { if (!CATEGORY_TABLE_VALUEP (x)) \
220 x = wrong_type_argument (Qcategory_table_value_p, (x)); } \
221 while (0)
222
223 #endif /* MULE */
224
225 #endif /* _MULE_CHARTAB_H */