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428
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1 /* Declarations having to do with Mule char tables.
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2 Copyright (C) 1992 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Sun Microsystems, Inc.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Mule 2.3. Not synched with FSF.
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23
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24 This file was written independently of the FSF implementation,
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25 and is not compatible. */
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26
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27 #ifndef _MULE_CHARTAB_H
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28 #define _MULE_CHARTAB_H
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29
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30 /************************************************************************/
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31 /* Char Tables */
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32 /************************************************************************/
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33
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34 /* Under Mule, we use a complex representation (see below).
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35 When not under Mule, there are only 256 possible characters
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36 so we just represent them directly. */
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37
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38 #ifdef MULE
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39
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40 DECLARE_LRECORD (char_table_entry, struct Lisp_Char_Table_Entry);
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41 #define XCHAR_TABLE_ENTRY(x) \
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42 XRECORD (x, char_table_entry, struct Lisp_Char_Table_Entry)
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43 #define XSETCHAR_TABLE_ENTRY(x, p) XSETRECORD (x, p, char_table_entry)
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44 #define CHAR_TABLE_ENTRYP(x) RECORDP (x, char_table_entry)
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45 /* #define CHECK_CHAR_TABLE_ENTRY(x) CHECK_RECORD (x, char_table_entry)
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46 char table entries should never escape to Lisp */
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47
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48 struct Lisp_Char_Table_Entry
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49 {
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50 struct lcrecord_header header;
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51
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52 /* In the interests of simplicity, we just use a fixed 96-entry
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53 table. If we felt like being smarter, we could make this
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54 variable-size and add an offset value into this structure. */
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55 Lisp_Object level2[96];
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56 };
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57
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58 #endif /* MULE */
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59
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60 DECLARE_LRECORD (char_table, struct Lisp_Char_Table);
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61 #define XCHAR_TABLE(x) \
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62 XRECORD (x, char_table, struct Lisp_Char_Table)
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63 #define XSETCHAR_TABLE(x, p) XSETRECORD (x, p, char_table)
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64 #define CHAR_TABLEP(x) RECORDP (x, char_table)
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65 #define CHECK_CHAR_TABLE(x) CHECK_RECORD (x, char_table)
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66 #define CONCHECK_CHAR_TABLE(x) CONCHECK_RECORD (x, char_table)
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67
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68 #define CHAR_TABLE_TYPE(ct) ((ct)->type)
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69 #define XCHAR_TABLE_TYPE(ct) CHAR_TABLE_TYPE (XCHAR_TABLE (ct))
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70
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71 enum char_table_type
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72 {
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73 CHAR_TABLE_TYPE_GENERIC,
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74 #ifdef MULE
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75 CHAR_TABLE_TYPE_CATEGORY,
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76 #endif
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77 CHAR_TABLE_TYPE_SYNTAX,
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78 CHAR_TABLE_TYPE_DISPLAY,
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79 CHAR_TABLE_TYPE_CHAR
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80 };
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81
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82 #ifdef MULE
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83 #define NUM_ASCII_CHARS 160
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84 #else
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85 #define NUM_ASCII_CHARS 256
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86 #endif
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87
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88 struct Lisp_Char_Table
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89 {
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90 struct lcrecord_header header;
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91
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92 Lisp_Object ascii[NUM_ASCII_CHARS];
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93
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94 #ifdef MULE
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95 /* We basically duplicate the Mule vectors-of-vectors implementation.
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96 We can do this because we know a great deal about the sorts of
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97 things we are going to be indexing.
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98
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99 The current implementation is as follows:
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100
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101 ascii[0-159] is used for ASCII and Control-1 characters.
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102
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103 level1[0 .. (NUM_LEADING_BYTES-1)] indexes charsets by leading
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104 byte (subtract MIN_LEADING_BYTE from the leading byte). If the
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105 value of this is not an opaque, then it specifies a value for all
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106 characters in the charset. Otherwise, it will be a
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107 96-Lisp-Object opaque that we created, specifying a value for
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108 each row. If the value of this is not an opaque, then it
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109 specifies a value for all characters in the row. Otherwise, it
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110 will be a 96-Lisp-Object opaque that we created, specifying a
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111 value for each character.
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112
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113 NOTE: 1) This will fail if some C routine passes an opaque to
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114 Fput_char_table(). Currently this is not a problem
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115 since all char tables that are created are Lisp-visible
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116 and thus no one should ever be putting an opaque in
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117 a char table. Another possibility is to consider
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118 adding a type to */
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119
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120 Lisp_Object level1[NUM_LEADING_BYTES];
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121
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122 #endif /* MULE */
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123
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124 enum char_table_type type;
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125
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126 /* stuff used for syntax tables */
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127 Lisp_Object mirror_table;
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128 Lisp_Object next_table; /* DO NOT mark through this. */
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129 };
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130
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131 #ifdef MULE
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132
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133 Lisp_Object get_non_ascii_char_table_value (struct Lisp_Char_Table *ct,
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134 int leading_byte,
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135 Emchar c);
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136
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137 INLINE Lisp_Object
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138 CHAR_TABLE_NON_ASCII_VALUE_UNSAFE (struct Lisp_Char_Table *ct, Emchar ch);
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139 INLINE Lisp_Object
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140 CHAR_TABLE_NON_ASCII_VALUE_UNSAFE (struct Lisp_Char_Table *ct, Emchar ch)
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141 {
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142 unsigned char lb = CHAR_LEADING_BYTE (ch);
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143 if (!CHAR_TABLE_ENTRYP ((ct)->level1[lb - MIN_LEADING_BYTE]))
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144 return (ct)->level1[lb - MIN_LEADING_BYTE];
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145 else
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146 return get_non_ascii_char_table_value (ct, lb, ch);
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147 }
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148
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149 #define CHAR_TABLE_VALUE_UNSAFE(ct, ch) \
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150 ((ch) < NUM_ASCII_CHARS \
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151 ? (ct)->ascii[ch] \
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152 : CHAR_TABLE_NON_ASCII_VALUE_UNSAFE (ct, ch))
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153
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154 #else /* not MULE */
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155
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156 #define CHAR_TABLE_VALUE_UNSAFE(ct, ch) ((ct)->ascii[(unsigned char) (ch)])
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157
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158 #endif /* not MULE */
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159
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160 enum chartab_range_type
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161 {
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162 CHARTAB_RANGE_ALL,
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163 #ifdef MULE
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164 CHARTAB_RANGE_CHARSET,
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165 CHARTAB_RANGE_ROW,
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166 #endif
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167 CHARTAB_RANGE_CHAR
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168 };
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169
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170 struct chartab_range
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171 {
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172 enum chartab_range_type type;
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173 Emchar ch;
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174 Lisp_Object charset;
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175 int row;
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176 };
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177
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178 void fill_char_table (struct Lisp_Char_Table *ct, Lisp_Object value);
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179 void put_char_table (struct Lisp_Char_Table *ct, struct chartab_range *range,
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180 Lisp_Object val);
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181 Lisp_Object get_char_table (Emchar, struct Lisp_Char_Table *);
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182 int map_char_table (struct Lisp_Char_Table *ct,
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183 struct chartab_range *range,
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184 int (*fn) (struct chartab_range *range,
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185 Lisp_Object val, void *arg),
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186 void *arg);
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187 void prune_syntax_tables (void);
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188
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189 EXFUN (Fcopy_char_table, 1);
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190 EXFUN (Fmake_char_table, 1);
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191 EXFUN (Fput_char_table, 3);
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192 EXFUN (Fget_char_table, 2);
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193
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194 extern Lisp_Object Vall_syntax_tables;
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195
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196
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197
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198 #ifdef MULE
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199 int check_category_char(Emchar ch, Lisp_Object ctbl,
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200 unsigned int designator, unsigned int not);
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201
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202 extern Lisp_Object Vstandard_category_table;
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203
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204 #define CATEGORY_DESIGNATORP(x) \
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205 (CHARP (x) && XCHAR (x) >= 32 && XCHAR (x) <= 126)
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206
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207 #define CHECK_CATEGORY_DESIGNATOR(x) do { \
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208 if (!CATEGORY_DESIGNATORP (x)) \
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209 dead_wrong_type_argument (Qcategory_designator_p, x); \
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210 } while (0)
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211
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212 #define CONCHECK_CATEGORY_DESIGNATOR(x) do { \
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213 if (!CATEGORY_DESIGNATORP (x)) \
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214 x = wrong_type_argument (Qcategory_designator_p, x); \
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215 } while (0)
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216
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217 #define CATEGORY_TABLE_VALUEP(x) \
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218 (NILP (x) || (BIT_VECTORP (x) && (bit_vector_length (XBIT_VECTOR (x)) == 95)))
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219
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220 #define CHECK_CATEGORY_TABLE_VALUE(x) do { \
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221 if (!CATEGORY_TABLE_VALUEP (x)) \
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222 dead_wrong_type_argument (Qcategory_table_value_p, x); \
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223 } while (0)
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224
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225 #define CONCHECK_CATEGORY_TABLE_VALUE(x) do { \
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226 if (!CATEGORY_TABLE_VALUEP (x)) \
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227 x = wrong_type_argument (Qcategory_table_value_p, x); \
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228 } while (0)
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229
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230 #endif /* MULE */
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231
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232 #endif /* _MULE_CHARTAB_H */
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