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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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793
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4 Copyright (C) 2002 Ben Wing.
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428
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: Mule 2.3. Not synched with FSF.
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24
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25 This file was written independently of the FSF implementation,
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26 and is not compatible. */
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27
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440
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28 #ifndef INCLUDED_chartab_h_
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29 #define INCLUDED_chartab_h_
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428
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30
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771
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31 #include "charset.h"
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32
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428
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33 /************************************************************************/
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34 /* Char Tables */
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35 /************************************************************************/
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36
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37 /* Under Mule, we use a complex representation (see below).
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38 When not under Mule, there are only 256 possible characters
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39 so we just represent them directly. */
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40
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41 #ifdef MULE
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42
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43 struct Lisp_Char_Table_Entry
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44 {
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45 struct lcrecord_header header;
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46
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47 /* In the interests of simplicity, we just use a fixed 96-entry
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48 table. If we felt like being smarter, we could make this
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49 variable-size and add an offset value into this structure. */
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50 Lisp_Object level2[96];
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51 };
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440
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52 typedef struct Lisp_Char_Table_Entry Lisp_Char_Table_Entry;
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53
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54 DECLARE_LRECORD (char_table_entry, Lisp_Char_Table_Entry);
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55 #define XCHAR_TABLE_ENTRY(x) \
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56 XRECORD (x, char_table_entry, Lisp_Char_Table_Entry)
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617
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57 #define wrap_char_table_entry(p) wrap_record (p, char_table_entry)
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440
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58 #define CHAR_TABLE_ENTRYP(x) RECORDP (x, char_table_entry)
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59 /* #define CHECK_CHAR_TABLE_ENTRY(x) CHECK_RECORD (x, char_table_entry)
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60 char table entries should never escape to Lisp */
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428
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61
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62 #endif /* MULE */
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63
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64 enum char_table_type
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65 {
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66 CHAR_TABLE_TYPE_GENERIC,
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67 #ifdef MULE
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68 CHAR_TABLE_TYPE_CATEGORY,
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69 #endif
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70 CHAR_TABLE_TYPE_SYNTAX,
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71 CHAR_TABLE_TYPE_DISPLAY,
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72 CHAR_TABLE_TYPE_CHAR
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73 };
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74
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75 #ifdef MULE
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76 #define NUM_ASCII_CHARS 160
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77 #else
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78 #define NUM_ASCII_CHARS 256
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79 #endif
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80
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81 struct Lisp_Char_Table
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82 {
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83 struct lcrecord_header header;
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84
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85 Lisp_Object ascii[NUM_ASCII_CHARS];
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826
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86 Lisp_Object default_;
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793
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87 Lisp_Object parent; /* #### not yet implemented */
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88
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428
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89 #ifdef MULE
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90 /* We basically duplicate the Mule vectors-of-vectors implementation.
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91 We can do this because we know a great deal about the sorts of
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92 things we are going to be indexing.
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93
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94 The current implementation is as follows:
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95
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96 ascii[0-159] is used for ASCII and Control-1 characters.
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97
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98 level1[0 .. (NUM_LEADING_BYTES-1)] indexes charsets by leading
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99 byte (subtract MIN_LEADING_BYTE from the leading byte). If the
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100 value of this is not an opaque, then it specifies a value for all
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101 characters in the charset. Otherwise, it will be a
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102 96-Lisp-Object opaque that we created, specifying a value for
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103 each row. If the value of this is not an opaque, then it
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104 specifies a value for all characters in the row. Otherwise, it
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105 will be a 96-Lisp-Object opaque that we created, specifying a
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106 value for each character.
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107
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108 NOTE: 1) This will fail if some C routine passes an opaque to
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109 Fput_char_table(). Currently this is not a problem
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110 since all char tables that are created are Lisp-visible
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111 and thus no one should ever be putting an opaque in
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112 a char table. Another possibility is to consider
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113 adding a type to */
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114
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115 Lisp_Object level1[NUM_LEADING_BYTES];
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116
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117 #endif /* MULE */
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118
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119 enum char_table_type type;
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120
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121 /* stuff used for syntax tables */
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122 Lisp_Object mirror_table;
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123 Lisp_Object next_table; /* DO NOT mark through this. */
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124 };
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440
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125 typedef struct Lisp_Char_Table Lisp_Char_Table;
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126
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127 DECLARE_LRECORD (char_table, Lisp_Char_Table);
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128 #define XCHAR_TABLE(x) XRECORD (x, char_table, Lisp_Char_Table)
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617
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129 #define wrap_char_table(p) wrap_record (p, char_table)
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440
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130 #define CHAR_TABLEP(x) RECORDP (x, char_table)
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131 #define CHECK_CHAR_TABLE(x) CHECK_RECORD (x, char_table)
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132 #define CONCHECK_CHAR_TABLE(x) CONCHECK_RECORD (x, char_table)
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133
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134 #define CHAR_TABLE_TYPE(ct) ((ct)->type)
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135 #define XCHAR_TABLE_TYPE(ct) CHAR_TABLE_TYPE (XCHAR_TABLE (ct))
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428
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136
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440
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137 Lisp_Object get_non_ascii_char_table_value (Lisp_Char_Table *ct,
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138 int leading_byte,
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867
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139 Ichar c);
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428
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140
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826
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141 DECLARE_INLINE_HEADER (
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142 Lisp_Object
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867
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143 get_char_table (Ichar ch, Lisp_Object table)
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826
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144 )
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428
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145 {
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826
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146 Lisp_Object retval;
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147 Lisp_Char_Table *ct = XCHAR_TABLE (table);
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148 #ifdef MULE
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149 if (ch < NUM_ASCII_CHARS)
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150 retval = ct->ascii[ch];
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428
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151 else
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826
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152 {
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867
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153 unsigned char lb = ichar_leading_byte (ch);
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826
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154 if (!CHAR_TABLE_ENTRYP (ct->level1[lb - MIN_LEADING_BYTE]))
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155 retval = ct->level1[lb - MIN_LEADING_BYTE];
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156 else
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157 retval = get_non_ascii_char_table_value (ct, lb, ch);
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158 }
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159 #else /* not MULE */
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160 retval = ct->ascii[(unsigned char) ch];
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161 #endif /* not MULE */
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162 if (!UNBOUNDP (retval))
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163 return retval;
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164 else
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165 return ct->default_;
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428
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166 }
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167
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168 enum chartab_range_type
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169 {
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170 CHARTAB_RANGE_ALL,
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171 #ifdef MULE
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172 CHARTAB_RANGE_CHARSET,
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173 CHARTAB_RANGE_ROW,
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174 #endif
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175 CHARTAB_RANGE_CHAR
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176 };
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177
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178 struct chartab_range
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179 {
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180 enum chartab_range_type type;
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867
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181 Ichar ch;
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428
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182 Lisp_Object charset;
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183 int row;
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184 };
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185
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826
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186 void set_char_table_default (Lisp_Object table, Lisp_Object value);
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187 void put_char_table (Lisp_Object table, struct chartab_range *range,
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428
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188 Lisp_Object val);
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826
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189 int map_char_table (Lisp_Object table,
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428
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190 struct chartab_range *range,
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191 int (*fn) (struct chartab_range *range,
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826
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192 Lisp_Object table,
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428
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193 Lisp_Object val, void *arg),
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194 void *arg);
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195 void prune_syntax_tables (void);
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826
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196 Lisp_Object get_range_char_table (struct chartab_range *range,
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197 Lisp_Object table, Lisp_Object multi);
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198 void copy_char_table_range (Lisp_Object from, Lisp_Object to,
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199 struct chartab_range *range);
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867
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200 int word_boundary_p (Ichar c1, Ichar c2);
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428
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201
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202 EXFUN (Fcopy_char_table, 1);
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203 EXFUN (Fmake_char_table, 1);
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204 EXFUN (Fput_char_table, 3);
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205 EXFUN (Fget_char_table, 2);
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206
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207 extern Lisp_Object Vall_syntax_tables;
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208
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209
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210
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211 #ifdef MULE
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867
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212 int check_category_char (Ichar ch, Lisp_Object ctbl, int designator,
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826
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213 int not_p);
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428
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214
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215 extern Lisp_Object Vstandard_category_table;
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216
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217 #define CATEGORY_DESIGNATORP(x) \
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218 (CHARP (x) && XCHAR (x) >= 32 && XCHAR (x) <= 126)
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219
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220 #define CHECK_CATEGORY_DESIGNATOR(x) do { \
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221 if (!CATEGORY_DESIGNATORP (x)) \
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222 dead_wrong_type_argument (Qcategory_designator_p, x); \
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223 } while (0)
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224
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225 #define CONCHECK_CATEGORY_DESIGNATOR(x) do { \
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226 if (!CATEGORY_DESIGNATORP (x)) \
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227 x = wrong_type_argument (Qcategory_designator_p, x); \
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228 } while (0)
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229
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230 #define CATEGORY_TABLE_VALUEP(x) \
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231 (NILP (x) || (BIT_VECTORP (x) && (bit_vector_length (XBIT_VECTOR (x)) == 95)))
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232
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233 #define CHECK_CATEGORY_TABLE_VALUE(x) do { \
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234 if (!CATEGORY_TABLE_VALUEP (x)) \
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235 dead_wrong_type_argument (Qcategory_table_value_p, x); \
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236 } while (0)
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237
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238 #define CONCHECK_CATEGORY_TABLE_VALUE(x) do { \
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239 if (!CATEGORY_TABLE_VALUEP (x)) \
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240 x = wrong_type_argument (Qcategory_table_value_p, x); \
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241 } while (0)
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242
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243 #endif /* MULE */
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244
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440
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245 #endif /* INCLUDED_chartab_h_ */
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