annotate src/buffer.h @ 1000:260c3ca9785e

[xemacs-hg @ 2002-09-12 21:54:19 by youngs] Update xemacs_extra_name.
author youngs
date Thu, 12 Sep 2002 21:54:19 +0000
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1 /* Header file for the buffer manipulation primitives.
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2 Copyright (C) 1985, 1986, 1992, 1993, 1994, 1995
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3 Free Software Foundation, Inc.
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4 Copyright (C) 1995 Sun Microsystems, Inc.
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5 Copyright (C) 2001, 2002 Ben Wing.
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6
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7 This file is part of XEmacs.
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8
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9 XEmacs is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 2, or (at your option) any
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12 later version.
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13
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14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with XEmacs; see the file COPYING. If not, write to
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21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 Boston, MA 02111-1307, USA. */
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23
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24 /* Synched up with: FSF 19.30. */
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25
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26 /* Authorship:
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27
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28 FSF: long ago.
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29 JWZ: separated out bufslots.h, early in Lemacs.
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30 Ben Wing: almost completely rewritten for Mule, 19.12.
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31 */
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32
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33 #ifndef INCLUDED_buffer_h_
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34 #define INCLUDED_buffer_h_
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35
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36 #include "casetab.h"
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37 #include "chartab.h"
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38
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39 /************************************************************************/
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40 /* */
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41 /* definition of Lisp buffer object */
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42 /* */
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43 /************************************************************************/
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44
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45 /* Note: we keep both Bytebpos and Charbpos versions of some of the
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46 important buffer positions because they are accessed so much.
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47 If we didn't do this, we would constantly be invalidating the
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48 charbpos<->bytebpos cache under Mule.
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49
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50 Note that under non-Mule, both versions will always be the
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51 same so we don't really need to keep track of them. But it
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52 simplifies the logic to go ahead and do so all the time and
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53 the memory loss is insignificant. */
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54
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55 /* Formerly, it didn't much matter what went inside the struct buffer_text
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56 and what went outside it. Now it does, with the advent of "indirect
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57 buffers" that share text with another buffer. An indirect buffer
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58 shares the same *text* as another buffer, but has its own buffer-local
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59 variables, its own accessible region, and its own markers and extents.
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60 (Due to the nature of markers, it doesn't actually matter much whether
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61 we stick them inside or out of the struct buffer_text -- the user won't
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62 notice any difference -- but we go ahead and put them outside for
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63 consistency and overall saneness of algorithm.)
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64
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65 FSFmacs gets away with not maintaining any "children" pointers from
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66 a buffer to the indirect buffers that refer to it by putting the
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67 markers inside of the struct buffer_text, using markers to keep track
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68 of BEGV and ZV in indirect buffers, and relying on the fact that
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69 all intervals (text properties and overlays) use markers for their
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70 start and end points. We don't do this for extents (markers are
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71 inefficient anyway and take up space), so we have to maintain
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72 children pointers. This is not terribly hard, though, and the
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73 code to maintain this is just like the code already present in
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74 extent-parent and extent-children.
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75 */
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76
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77 struct buffer_text
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78 {
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79 Ibyte *beg; /* Actual address of buffer contents. */
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80 Bytebpos gpt; /* Index of gap in buffer. */
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81 Bytebpos z; /* Index of end of buffer. */
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82 Charbpos bufz; /* Equivalent as a Charbpos. */
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83 Bytecount gap_size;/* Size of buffer's gap */
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84 Bytecount end_gap_size;/* Size of buffer's end gap */
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85 long modiff; /* This counts buffer-modification events
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86 for this buffer. It is incremented for
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87 each such event, and never otherwise
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88 changed. */
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89 long save_modiff; /* Previous value of modiff, as of last
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90 time buffer visited or saved a file. */
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91
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92 #ifdef MULE
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93 /* We keep track of a "known" region for very fast access. This
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94 information is text-only so it goes here. We update this at each
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95 change to the buffer, so if it's entirely ASCII, these will always
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96 contain the minimum and maximum positions of the buffer. */
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97 Charbpos mule_bufmin, mule_bufmax;
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98 Bytebpos mule_bytmin, mule_bytmax;
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99 int mule_shifter, mule_three_p;
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100
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101 /* And we also cache 16 positions for fairly fast access near those
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102 positions. */
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103 Charbpos mule_charbpos_cache[16];
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104 Bytebpos mule_bytebpos_cache[16];
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105
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106 /* True if all chars fit into one byte;
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107 == (format == FORMAT_8_BIT_FIXED ||
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108 (format == FORMAT_DEFAULT && num_ascii_chars == bufz - 1))
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109 kept around to speed up (slightly?) the byte-char conversion routines. */
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110 int entirely_one_byte_p;
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111 /* Number of ASCII chars in buffer (0 - 127) */
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112 Charcount num_ascii_chars;
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113 /* Number of chars in buffer that would fit in an 8-bit-fixed buffer. */
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114 Charcount num_8_bit_fixed_chars;
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115 /* Number of chars in buffer that would fit in an 16-bit-fixed buffer. */
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116 Charcount num_16_bit_fixed_chars;
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117
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118 /* Currently we only handle 8 bit fixed and default */
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119 Internal_Format format;
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120 #endif
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121
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122 /* Similar to the above, we keep track of positions for which line
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123 number has last been calculated. See line-number.c. */
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124 Lisp_Object line_number_cache;
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125
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126 /* Change data that goes with the text. */
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127 struct buffer_text_change_data *changes;
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128 };
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129
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130 struct buffer
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131 {
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132 struct lcrecord_header header;
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133
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134 /* This structure holds the coordinates of the buffer contents
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135 in ordinary buffers. In indirect buffers, this is not used. */
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136 struct buffer_text own_text;
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137
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138 /* This points to the `struct buffer_text' that is used for this buffer.
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139 In an ordinary buffer, this is the own_text field above.
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140 In an indirect buffer, this is the own_text field of another buffer. */
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141 struct buffer_text *text;
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142
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143 Bytebpos pt; /* Position of point in buffer. */
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144 Charbpos bufpt; /* Equivalent as a Charbpos. */
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145 Bytebpos begv; /* Index of beginning of accessible range. */
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146 Charbpos bufbegv; /* Equivalent as a Charbpos. */
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147 Bytebpos zv; /* Index of end of accessible range. */
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148 Charbpos bufzv; /* Equivalent as a Charbpos. */
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149
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150 int face_change; /* This is set when a change in how the text should
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151 be displayed (e.g., font, color) is made. */
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152
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153 /* Whether buffer specific face is specified. */
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154 int buffer_local_face_property;
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155
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156 /* change data indicating what portion of the text has changed
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157 since the last time this was reset. Used by redisplay.
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158 Logically we should keep this with the text structure, but
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159 redisplay resets it for each buffer individually and we don't
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160 want interference between an indirect buffer and its base
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161 buffer. */
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162 struct each_buffer_change_data *changes;
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163
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164 #ifdef REGION_CACHE_NEEDS_WORK
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165 /* If the long line scan cache is enabled (i.e. the buffer-local
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166 variable cache-long-line-scans is non-nil), newline_cache
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167 points to the newline cache, and width_run_cache points to the
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168 width run cache.
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169
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170 The newline cache records which stretches of the buffer are
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171 known *not* to contain newlines, so that they can be skipped
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172 quickly when we search for newlines.
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173
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174 The width run cache records which stretches of the buffer are
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175 known to contain characters whose widths are all the same. If
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176 the width run cache maps a character to a value > 0, that value
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177 is the character's width; if it maps a character to zero, we
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178 don't know what its width is. This allows compute_motion to
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179 process such regions very quickly, using algebra instead of
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180 inspecting each character. See also width_table, below. */
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181 struct region_cache *newline_cache;
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182 struct region_cache *width_run_cache;
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183 #endif /* REGION_CACHE_NEEDS_WORK */
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184
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185 /* The markers that refer to this buffer. This is actually a single
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186 marker -- successive elements in its marker `chain' are the other
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187 markers referring to this buffer */
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188 Lisp_Marker *markers;
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189
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190 /* The buffer's extent info. This is its own type, an extent-info
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191 object (done this way for ease in marking / finalizing). */
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192 Lisp_Object extent_info;
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193
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194 /* The buffer's syntax cache. This caches a known region where the
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195 `syntax-table' property is unchanged, for quick lookup in the routines
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196 that scan a buffer looking for a particular syntax (regex routines,
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197 parse-partial-sexp, etc.). */
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198 struct syntax_cache *syntax_cache;
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199
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200 /* ----------------------------------------------------------------- */
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201 /* All the stuff above this line is the responsibility of insdel.c,
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202 with some help from marker.c, extents.c and syntax.c.
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203 All the stuff below this line is the responsibility of buffer.c. */
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204
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205 /* In an indirect buffer, this points to the base buffer.
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206 In an ordinary buffer, it is 0.
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207 We DO mark through this slot. */
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208 struct buffer *base_buffer;
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209
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210 /* List of indirect buffers whose base is this buffer.
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211 If we are an indirect buffer, this will be nil.
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212 Do NOT mark through this. */
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213 Lisp_Object indirect_children;
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214
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215 /* Flags saying which DEFVAR_PER_BUFFER variables
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216 are local to this buffer. */
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217 int local_var_flags;
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218
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219 /* Set to the modtime of the visited file when read or written.
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220 -1 means visited file was nonexistent.
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221 0 means visited file modtime unknown; in no case complain
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222 about any mismatch on next save attempt. */
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223 int modtime;
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224
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225 /* the value of text->modiff at the last auto-save. */
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226 long auto_save_modified;
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227
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228 /* The time at which we detected a failure to auto-save,
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229 Or -1 if we didn't have a failure. */
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230 int auto_save_failure_time;
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231
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232 /* Position in buffer at which display started
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233 the last time this buffer was displayed. */
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234 int last_window_start;
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235
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236 /* Everything from here down must be a Lisp_Object */
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237
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238 #define MARKED_SLOT(x) Lisp_Object x
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239 #include "bufslots.h"
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240 #undef MARKED_SLOT
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241 };
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242
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243 DECLARE_LRECORD (buffer, struct buffer);
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244 #define XBUFFER(x) XRECORD (x, buffer, struct buffer)
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245 #define wrap_buffer(p) wrap_record (p, buffer)
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246 #define BUFFERP(x) RECORDP (x, buffer)
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247 #define CHECK_BUFFER(x) CHECK_RECORD (x, buffer)
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248 #define CONCHECK_BUFFER(x) CONCHECK_RECORD (x, buffer)
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249
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250 #define BUFFER_LIVE_P(b) (!NILP ((b)->name))
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251
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252 #define CHECK_LIVE_BUFFER(x) do { \
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253 CHECK_BUFFER (x); \
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254 if (!BUFFER_LIVE_P (XBUFFER (x))) \
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255 dead_wrong_type_argument (Qbuffer_live_p, (x)); \
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256 } while (0)
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257
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258 #define CONCHECK_LIVE_BUFFER(x) do { \
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259 CONCHECK_BUFFER (x); \
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260 if (!BUFFER_LIVE_P (XBUFFER (x))) \
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261 x = wrong_type_argument (Qbuffer_live_p, (x)); \
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262 } while (0)
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263
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264
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265 #define BUFFER_BASE_BUFFER(b) ((b)->base_buffer ? (b)->base_buffer : (b))
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266
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267 /* Map over buffers sharing the same text as MPS_BUF. MPS_BUFVAR is a
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268 variable that gets the buffer values (beginning with the base
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269 buffer, then the children), and MPS_BUFCONS should be a temporary
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270 Lisp_Object variable. */
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271 #define MAP_INDIRECT_BUFFERS(mps_buf, mps_bufvar, mps_bufcons) \
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272 for (mps_bufcons = Qunbound, \
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273 mps_bufvar = BUFFER_BASE_BUFFER (mps_buf); \
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274 UNBOUNDP (mps_bufcons) ? \
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275 (mps_bufcons = mps_bufvar->indirect_children, \
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276 1) \
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277 : (!NILP (mps_bufcons) \
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278 && (mps_bufvar = XBUFFER (XCAR (mps_bufcons)), 1) \
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279 && (mps_bufcons = XCDR (mps_bufcons), 1)); \
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280 )
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281
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282
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283 /* All macros below follow the three golden rules of macros (see text.h),
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284 with the following exception:
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285
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286 -- 'struct buffer *' arguments can be evaluated more than once.
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287 */
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288
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289 /*----------------------------------------------------------------------*/
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290 /* Accessor macros for important positions in a buffer */
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291 /*----------------------------------------------------------------------*/
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292
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293 /* We put them here because some stuff below wants them before the
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294 place where we would normally put them. */
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295
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296 /* None of these are lvalues. Use the settor macros below to change
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297 the positions. */
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298
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299 /* Beginning of buffer. */
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300 #define BYTE_BUF_BEG(buf) ((Bytebpos) 1)
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301 #define BUF_BEG(buf) ((Charbpos) 1)
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302
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303 /* Beginning of accessible range of buffer. */
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304 #define BYTE_BUF_BEGV(buf) ((buf)->begv + 0)
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305 #define BUF_BEGV(buf) ((buf)->bufbegv + 0)
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306
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307 /* End of accessible range of buffer. */
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308 #define BYTE_BUF_ZV(buf) ((buf)->zv + 0)
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309 #define BUF_ZV(buf) ((buf)->bufzv + 0)
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310
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311 /* End of buffer. */
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312 #define BYTE_BUF_Z(buf) ((buf)->text->z + 0)
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313 #define BUF_Z(buf) ((buf)->text->bufz + 0)
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314
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315 /* Point. */
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316 #define BYTE_BUF_PT(buf) ((buf)->pt + 0)
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317 #define BUF_PT(buf) ((buf)->bufpt + 0)
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318
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319 /* Internal format of buffer. */
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320 #ifdef MULE
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321 #define BUF_FORMAT(buf) ((buf)->text->format)
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322 #else
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323 #define BUF_FORMAT(buf) FORMAT_DEFAULT
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324 #endif
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325
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326 /*----------------------------------------------------------------------*/
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327 /* Validating byte positions */
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328 /*----------------------------------------------------------------------*/
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329
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330 /* Address of byte at position POS in buffer, no error checking. */
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331 DECLARE_INLINE_HEADER (
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332 Ibyte *
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diff changeset
333 BYTE_BUF_BYTE_ADDRESS_NO_VERIFY (struct buffer *buf, Bytebpos pos)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
334 )
428
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335 {
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
336 return (buf->text->beg +
3ecd8885ac67 Import from CVS: tag r21-2-22
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337 ((pos >= buf->text->gpt ? (pos + buf->text->gap_size) : pos)
3ecd8885ac67 Import from CVS: tag r21-2-22
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338 - 1));
3ecd8885ac67 Import from CVS: tag r21-2-22
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339 }
3ecd8885ac67 Import from CVS: tag r21-2-22
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340
826
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diff changeset
341 /* Given a byte position, does it point to the beginning of a character?
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
342 */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
343 #ifdef MULE
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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344 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
345 int
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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346 VALID_BYTEBPOS_P (struct buffer *buf, Bytebpos x)
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347 )
428
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348 {
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diff changeset
349 switch (BUF_FORMAT (buf))
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diff changeset
350 {
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diff changeset
351 case FORMAT_DEFAULT:
867
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352 return ibyte_first_byte_p (*BYTE_BUF_BYTE_ADDRESS_NO_VERIFY (buf, x));
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diff changeset
353 case FORMAT_16_BIT_FIXED:
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
354 return ((x - 1) & 1) == 0;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
355 case FORMAT_32_BIT_FIXED:
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
356 return ((x - 1) & 3) == 0;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
357 default:
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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358 return 1;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
359 }
428
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360 }
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
361 #else
665
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diff changeset
362 # define VALID_BYTEBPOS_P(buf, x) 1
428
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363 #endif
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364
826
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diff changeset
365 /* If error-checking is enabled, assert that the given char position is
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
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diff changeset
366 within range. Otherwise, do nothing.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
367 */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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368 # define ASSERT_VALID_CHARBPOS_UNSAFE(buf, x) do { \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
369 text_checking_assert (BUFFER_LIVE_P (buf)); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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370 text_checking_assert ((x) >= BUF_BEG (buf) && x <= BUF_Z (buf)); \
428
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371 } while (0)
826
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diff changeset
372
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diff changeset
373 /* If error-checking is enabled, assert that the given byte position is
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
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374 within range and points to the beginning of a character or to the end of
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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375 the buffer. Otherwise, do nothing.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
376 */
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377 # define ASSERT_VALID_BYTEBPOS_UNSAFE(buf, x) do { \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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378 text_checking_assert (BUFFER_LIVE_P (buf)); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
379 text_checking_assert ((x) >= BYTE_BUF_BEG (buf) && x <= BYTE_BUF_Z (buf)); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
380 text_checking_assert (VALID_BYTEBPOS_P (buf, x)); \
428
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diff changeset
381 } while (0)
826
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diff changeset
382
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
383 /* If error-checking is enabled, assert that the given byte position is
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
384 within range and satisfies ASSERT_VALID_BYTEBPOS() and also does not
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
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diff changeset
385 refer to the beginning of the buffer. (i.e. movement backwards is OK.)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
386 Otherwise, do nothing.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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parents: 814
diff changeset
387 */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
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diff changeset
388 # define ASSERT_VALID_BYTEBPOS_BACKWARD_UNSAFE(buf, x) do { \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
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diff changeset
389 text_checking_assert (BUFFER_LIVE_P (buf)); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
390 text_checking_assert ((x) > BYTE_BUF_BEG (buf) && x <= BYTE_BUF_Z (buf)); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
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diff changeset
391 text_checking_assert (VALID_BYTEBPOS_P (buf, x)); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
392 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
393
826
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diff changeset
394 /* If error-checking is enabled, assert that the given byte position is
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
395 within range and satisfies ASSERT_VALID_BYTEBPOS() and also does not
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
396 refer to the end of the buffer. (i.e. movement forwards is OK.)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
397 Otherwise, do nothing.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
398 */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
399 # define ASSERT_VALID_BYTEBPOS_FORWARD_UNSAFE(buf, x) do { \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
400 text_checking_assert (BUFFER_LIVE_P (buf)); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
401 text_checking_assert ((x) >= BYTE_BUF_BEG (buf) && x < BYTE_BUF_Z (buf)); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
402 text_checking_assert (VALID_BYTEBPOS_P (buf, x)); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
403 } while (0)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
404
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
405 #ifdef MULE
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
406 /* Make sure that the given byte position is pointing to the beginning of a
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
407 character. If not, back up until this is the case. Note that there are
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
408 not too many places where it is legitimate to do this sort of thing.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
409 It's an error if you're passed an "invalid" byte position.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
410 */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
411 # define VALIDATE_BYTEBPOS_BACKWARD(buf, x) do { \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
412 switch (BUF_FORMAT (buf)) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
413 { \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
414 case FORMAT_DEFAULT: \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
415 { \
867
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diff changeset
416 Ibyte *VBB_ptr = BYTE_BUF_BYTE_ADDRESS_NO_VERIFY (buf, x); \
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
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diff changeset
417 while (!ibyte_first_byte_p (*VBB_ptr)) \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
418 VBB_ptr--, (x)--; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
419 } \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
420 break; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
421 case FORMAT_16_BIT_FIXED: \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
422 if (((x - 1) & 1) != 0) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
423 x--; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
424 break; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
425 case FORMAT_32_BIT_FIXED: \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
426 while (((x - 1) & 3) != 0) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
427 x--; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
428 break; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
429 default: \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
430 break; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
431 } \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
432 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
433 #else
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 650
diff changeset
434 # define VALIDATE_BYTEBPOS_BACKWARD(buf, x)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
435 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
436
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
437 #ifdef MULE
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
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diff changeset
438 /* Make sure that the given byte position is pointing to the beginning of a
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
439 character. If not, move forward until this is the case. Note that
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
440 there are not too many places where it is legitimate to do this sort of
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
441 thing. It's an error if you're passed an "invalid" byte position.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
442 */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
443 # define VALIDATE_BYTEBPOS_FORWARD(buf, x) do { \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
444 switch (BUF_FORMAT (buf)) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
445 { \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
446 case FORMAT_DEFAULT: \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
447 { \
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
448 Ibyte *VBF_ptr = BYTE_BUF_BYTE_ADDRESS_NO_VERIFY (buf, x); \
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
449 while (!ibyte_first_byte_p (*VBF_ptr)) \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
450 VBF_ptr++, (x)++; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
451 } \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
452 break; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
453 case FORMAT_16_BIT_FIXED: \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
454 if (((x - 1) & 1) != 0) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
455 x++; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
456 break; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
457 case FORMAT_32_BIT_FIXED: \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
458 while (((x - 1) & 3) != 0) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
459 x++; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
460 break; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
461 default: \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
462 break; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
463 } \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
464 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
465 #else
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 650
diff changeset
466 # define VALIDATE_BYTEBPOS_FORWARD(buf, x)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
467 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
468
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
469 /*----------------------------------------------------------------------*/
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
470 /* Working with byte positions */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
471 /*----------------------------------------------------------------------*/
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
472
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
473
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
474 /* Given a byte position (assumed to point at the beginning of a
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
475 character), modify that value so it points to the beginning of the next
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
476 character.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
477
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
478 Note that in the simplest case (no MULE, no ERROR_CHECK_TEXT),
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
479 this crap reduces down to simply (x)++. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
480
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 650
diff changeset
481 #define INC_BYTEBPOS(buf, x) do \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
482 { \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
483 ASSERT_VALID_BYTEBPOS_FORWARD_UNSAFE (buf, x); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
484 /* Note that we do the increment first to \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
485 make sure that the pointer in \
665
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diff changeset
486 VALIDATE_BYTEBPOS_FORWARD() ends up on \
428
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487 the correct side of the gap */ \
3ecd8885ac67 Import from CVS: tag r21-2-22
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488 (x)++; \
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
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diff changeset
489 VALIDATE_BYTEBPOS_FORWARD (buf, x); \
428
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490 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
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491
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parents: 814
diff changeset
492 /* Given a byte position (assumed to point at the beginning of a
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
493 character), modify that value so it points to the beginning of the
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
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diff changeset
494 previous character. Unlike for DEC_IBYTEPTR(), we can do all the
826
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diff changeset
495 assert()s because there are sentinels at the beginning of the gap and
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
496 the end of the buffer.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
497
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
498 Note that in the simplest case (no MULE, no ERROR_CHECK_TEXT), this
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
499 crap reduces down to simply (x)--. */
428
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diff changeset
500
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
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diff changeset
501 #define DEC_BYTEBPOS(buf, x) do \
428
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502 { \
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
503 ASSERT_VALID_BYTEBPOS_BACKWARD_UNSAFE (buf, x); \
428
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504 /* Note that we do the decrement first to \
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
505 make sure that the pointer in \
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
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parents: 650
diff changeset
506 VALIDATE_BYTEBPOS_BACKWARD() ends up on \
428
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507 the correct side of the gap */ \
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
508 (x)--; \
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
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diff changeset
509 VALIDATE_BYTEBPOS_BACKWARD (buf, x); \
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510 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
511
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diff changeset
512 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
513 Bytebpos
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
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diff changeset
514 prev_bytebpos (struct buffer *buf, Bytebpos x)
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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515 )
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diff changeset
516 {
665
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diff changeset
517 DEC_BYTEBPOS (buf, x);
428
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518 return x;
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
519 }
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
520
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diff changeset
521 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
522 Bytebpos
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
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diff changeset
523 next_bytebpos (struct buffer *buf, Bytebpos x)
826
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diff changeset
524 )
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diff changeset
525 {
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
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diff changeset
526 INC_BYTEBPOS (buf, x);
428
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527 return x;
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
528 }
3ecd8885ac67 Import from CVS: tag r21-2-22
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529
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530 /* A constant representing an invalid Bytebpos. Valid Bytebposes
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
531 can never have this value. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
532
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
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diff changeset
533 #define BYTEBPOS_INVALID ((Bytebpos) -1)
428
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534
3ecd8885ac67 Import from CVS: tag r21-2-22
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535 /*----------------------------------------------------------------------*/
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6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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536 /* Converting between byte and character positions */
428
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diff changeset
537 /*----------------------------------------------------------------------*/
3ecd8885ac67 Import from CVS: tag r21-2-22
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538
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539 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
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540
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
541 /* The basic algorithm we use is to keep track of a known region of
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
542 characters in each buffer, all of which are of the same width. We keep
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
543 track of the boundaries of the region in both Charbpos and Bytebpos
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
544 coordinates and also keep track of the char width, which is 1 - 4 bytes.
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
545 If the position we're translating is not in the known region, then we
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
546 invoke a function to update the known region to surround the position in
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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parents: 665
diff changeset
547 question. This assumes locality of reference, which is usually the
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
548 case.
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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parents: 665
diff changeset
549
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
550 Note that the function to update the known region can be simple or
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
551 complicated depending on how much information we cache. In addition to
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
552 the known region, we always cache the correct conversions for point,
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
553 BEGV, and ZV, and in addition to this we cache 16 positions where the
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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parents: 665
diff changeset
554 conversion is known. We only look in the cache or update it when we
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
555 need to move the known region more than a certain amount (currently 50
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
556 chars), and then we throw away a "random" value and replace it with the
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
557 newly calculated value.
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
558
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
559 Finally, we maintain an extra flag that tracks whether the buffer is
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
560 entirely ASCII, to speed up the conversions even more. This flag is
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
561 actually of dubious value because in an entirely-ASCII buffer the known
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
562 region will always span the entire buffer (in fact, we update the flag
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
563 based on this fact), and so all we're saving is a few machine cycles.
428
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564
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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parents: 665
diff changeset
565 A potentially smarter method than what we do with known regions and
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
566 cached positions would be to keep some sort of pseudo-extent layer over
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
567 the buffer; maybe keep track of the charbpos/bytebpos correspondence at the
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
568 beginning of each line, which would allow us to do a binary search over
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
569 the pseudo-extents to narrow things down to the correct line, at which
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
570 point you could use a linear movement method. This would also mesh well
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
571 with efficiently implementing a line-numbering scheme. However, you
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
572 have to weigh the amount of time spent updating the cache vs. the
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
573 savings that result from it. In reality, we modify the buffer far less
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
574 often than we access it, so a cache of this sort that provides
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
575 guaranteed LOG (N) performance (or perhaps N * LOG (N), if we set a
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
576 maximum on the cache size) would indeed be a win, particularly in very
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
577 large buffers. If we ever implement this, we should probably set a
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
578 reasonably high minimum below which we use the old method, because the
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
579 time spent updating the fancy cache would likely become dominant when
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
580 making buffer modifications in smaller buffers.
428
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diff changeset
581
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
582 Note also that we have to multiply or divide by the char width in order
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
583 to convert the positions. We do some tricks to avoid ever actually
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
584 having to do a multiply or divide, because that is typically an
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
585 expensive operation (esp. divide). Multiplying or dividing by 1, 2, or
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
586 4 can be implemented simply as a shift left or shift right, and we keep
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
587 track of a shifter value (0, 1, or 2) indicating how much to shift.
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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parents: 665
diff changeset
588 Multiplying by 3 can be implemented by doubling and then adding the
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
589 original value. Dividing by 3, alas, cannot be implemented in any
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
590 simple shift/subtract method, as far as I know; so we just do a table
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
591 lookup. For simplicity, we use a table of size 128K, which indexes the
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
592 "divide-by-3" values for the first 64K non-negative numbers. (Note that
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
593 we can increase the size up to 384K, i.e. indexing the first 192K
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
594 non-negative numbers, while still using shorts in the array.) This also
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
595 means that the size of the known region can be at most 64K for
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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diff changeset
596 width-three characters.
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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parents: 665
diff changeset
597
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
598 !!#### We should investigate the algorithm in GNU Emacs. I think it
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
599 does something similar, but it may differ in some details, and it's
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
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diff changeset
600 worth seeing if anything can be gleaned.
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601 */
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
602
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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603 Bytebpos charbpos_to_bytebpos_func (struct buffer *buf, Charbpos x);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
604 Charbpos bytebpos_to_charbpos_func (struct buffer *buf, Bytebpos x);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
605 extern short three_to_one_table[];
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
606
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
607 #endif /* MULE */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
608
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
609 /* Given a Charbpos, return the equivalent Bytebpos. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
610
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
611 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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parents: 814
diff changeset
612 Bytebpos
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
613 charbpos_to_bytebpos (struct buffer *buf, Charbpos x)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
614 )
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diff changeset
615 {
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
616 Bytebpos retval;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
617 ASSERT_VALID_CHARBPOS_UNSAFE (buf, x);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
618 #ifdef MULE
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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parents: 814
diff changeset
619 if (buf->text->entirely_one_byte_p)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
620 retval = (Bytebpos) x;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
621 else if (BUF_FORMAT (buf) == FORMAT_16_BIT_FIXED)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
622 retval = (Bytebpos) (x << 1);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
623 else if (BUF_FORMAT (buf) == FORMAT_32_BIT_FIXED)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
624 retval = (Bytebpos) (x << 2);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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parents: 814
diff changeset
625 else if (x >= buf->text->mule_bufmin && x <= buf->text->mule_bufmax)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
626 retval = (buf->text->mule_bytmin +
428
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diff changeset
627 ((x - buf->text->mule_bufmin) << buf->text->mule_shifter) +
814
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 800
diff changeset
628 (buf->text->mule_three_p ? (x - buf->text->mule_bufmin) :
a634e3b7acc8 [xemacs-hg @ 2002-04-14 12:41:59 by ben]
ben
parents: 800
diff changeset
629 (Bytebpos) 0));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
630 else
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
631 retval = charbpos_to_bytebpos_func (buf, x);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
632 #else
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
633 retval = (Bytebpos) x;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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diff changeset
634 #endif
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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parents: 814
diff changeset
635 ASSERT_VALID_BYTEBPOS_UNSAFE (buf, retval);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
636 return retval;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
637 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
638
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
639 /* Given a Bytebpos, return the equivalent Charbpos. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
640
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
641 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
642 Charbpos
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
643 bytebpos_to_charbpos (struct buffer *buf, Bytebpos x)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
644 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
645 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
646 Charbpos retval;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
647 ASSERT_VALID_BYTEBPOS_UNSAFE (buf, x);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
648 #ifdef MULE
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
649 if (buf->text->entirely_one_byte_p)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
650 retval = (Charbpos) x;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
651 else if (BUF_FORMAT (buf) == FORMAT_16_BIT_FIXED)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
652 retval = (Charbpos) (x >> 1);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
653 else if (BUF_FORMAT (buf) == FORMAT_32_BIT_FIXED)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
654 retval = (Charbpos) (x >> 2);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
655 else if (x >= buf->text->mule_bytmin && x <= buf->text->mule_bytmax)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
656 retval = (buf->text->mule_bufmin +
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
657 ((buf->text->mule_three_p
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
658 ? three_to_one_table[x - buf->text->mule_bytmin]
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
659 : (x - buf->text->mule_bytmin) >> buf->text->mule_shifter)));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
660 else
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
661 retval = bytebpos_to_charbpos_func (buf, x);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
662 #else
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
663 retval = (Charbpos) x;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
664 #endif
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
665 ASSERT_VALID_CHARBPOS_UNSAFE (buf, retval);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
666 return retval;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
667 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
668
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
669 /* Given a Bytebpos, return the equivalent Charbpos as a Lisp Object. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
670
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
671 #define make_charbpos(buf, ind) make_int (bytebpos_to_charbpos (buf, ind))
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
672
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
673 /*----------------------------------------------------------------------*/
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
674 /* Converting between byte and memory positions */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
675 /*----------------------------------------------------------------------*/
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
676
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
677 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
678 int
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
679 valid_membpos_p (struct buffer *buf, Membpos x)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
680 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
681 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
682 return ((x >= 1 && x <= (Membpos) buf->text->gpt) ||
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
683 (x > (Membpos) (buf->text->gpt + buf->text->gap_size) &&
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
684 x <= (Membpos) (buf->text->z + buf->text->gap_size)));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
685 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
686
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
687 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
688 Membpos
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
689 bytebpos_to_membpos (struct buffer *buf, Bytebpos x)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
690 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
691 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
692 ASSERT_VALID_BYTEBPOS_UNSAFE (buf, x);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
693 return (Membpos) ((x > buf->text->gpt) ? (x + buf->text->gap_size) : x);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
694 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
695
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
696
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
697 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
698 Bytebpos
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
699 membpos_to_bytebpos (struct buffer *buf, Membpos x)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
700 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
701 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
702 Bytebpos retval;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
703 text_checking_assert (valid_membpos_p (buf, x));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
704 retval = (Bytebpos) ((x > (Membpos) buf->text->gpt) ?
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
705 x - buf->text->gap_size :
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
706 x);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
707 ASSERT_VALID_BYTEBPOS_UNSAFE (buf, retval);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
708 return retval;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
709 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
710
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
711 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
712 Charbpos
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
713 membpos_to_charbpos (struct buffer *buf, Membpos x)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
714 )
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
715 {
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
716 return bytebpos_to_charbpos (buf, membpos_to_bytebpos (buf, x));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
717 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
718
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
719 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
720 Membpos
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
721 charbpos_to_membpos (struct buffer *buf, Charbpos x)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
722 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
723 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
724 return bytebpos_to_membpos (buf, charbpos_to_bytebpos (buf, x));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
725 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
726
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
727 /*----------------------------------------------------------------------*/
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
728 /* Generalized buffer/string position convertors */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
729 /*----------------------------------------------------------------------*/
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
730
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
731 /* These macros generalize many standard buffer-position functions to
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
732 either a buffer or a string. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
733
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
734 /* Converting between Memxpos's and Bytexpos's, for a buffer-or-string.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
735 For strings, this is a no-op. For buffers, this resolves
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
736 to the standard membpos<->bytebpos converters. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
737
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
738 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
739 Memxpos buffer_or_string_bytexpos_to_memxpos (Lisp_Object obj, Bytexpos pos)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
740 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
741 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
742 return (BUFFERP (obj) ? bytebpos_to_membpos (XBUFFER (obj), pos) :
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
743 (Memxpos) pos);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
744 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
745
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
746 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
747 Bytexpos buffer_or_string_memxpos_to_bytexpos (Lisp_Object obj, Memxpos pos)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
748 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
749 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
750 return (BUFFERP (obj) ? membpos_to_bytebpos (XBUFFER (obj), pos) :
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
751 (Bytexpos) pos);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
752 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
753
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
754 /* Converting between Charxpos's and Bytexpos's, for a buffer-or-string.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
755 For strings, this maps to the bytecount<->charcount converters. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
756
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
757 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
758 Bytexpos buffer_or_string_charxpos_to_bytexpos (Lisp_Object obj, Charxpos pos)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
759 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
760 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
761 return (BUFFERP (obj) ? charbpos_to_bytebpos (XBUFFER (obj), pos) :
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
762 (Bytexpos) string_index_char_to_byte (obj, pos));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
763 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
764
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
765 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
766 Charxpos buffer_or_string_bytexpos_to_charxpos (Lisp_Object obj, Bytexpos pos)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
767 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
768 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
769 return (BUFFERP (obj) ? bytebpos_to_charbpos (XBUFFER (obj), pos) :
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
770 (Charxpos) string_index_byte_to_char (obj, pos));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
771 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
772
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
773 /* Similar for Charxpos's and Memxpos's. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
774
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
775 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
776 Memxpos buffer_or_string_charxpos_to_memxpos (Lisp_Object obj, Charxpos pos)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
777 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
778 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
779 return (BUFFERP (obj) ? charbpos_to_membpos (XBUFFER (obj), pos) :
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
780 (Memxpos) string_index_char_to_byte (obj, pos));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
781 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
782
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
783 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
784 Charxpos buffer_or_string_memxpos_to_charxpos (Lisp_Object obj, Memxpos pos)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
785 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
786 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
787 return (BUFFERP (obj) ? membpos_to_charbpos (XBUFFER (obj), pos) :
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
788 (Charxpos) string_index_byte_to_char (obj, pos));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
789 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
790
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
791 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
792 Internal_Format buffer_or_other_internal_format (Lisp_Object obj)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
793 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
794 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
795 return BUFFERP (obj) ? BUF_FORMAT (XBUFFER (obj)) : FORMAT_DEFAULT;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
796 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
797
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
798 /* Return the index to the character before the one at X,
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
799 in a buffer or string. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
800
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
801 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
802 Bytebpos
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
803 prev_bytexpos (Lisp_Object obj, Bytebpos x)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
804 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
805 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
806 return BUFFERP (obj) ? prev_bytebpos (XBUFFER (obj), x) :
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
807 prev_string_index (obj, x);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
808 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
809
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
810 /* Return the index to the character after the one at X,
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
811 in a buffer or string. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
812
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
813 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
814 Bytebpos
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
815 next_bytexpos (Lisp_Object obj, Bytebpos x)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
816 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
817 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
818 return BUFFERP (obj) ? next_bytebpos (XBUFFER (obj), x) :
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
819 next_string_index (obj, x);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
820 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
821
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
822 /*----------------------------------------------------------------------*/
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
823 /* Converting between positions and addresses */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
824 /*----------------------------------------------------------------------*/
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
825
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
826 /* Convert the address of a byte in the buffer into a position. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
827 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
828 Bytebpos
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
829 BYTE_BUF_PTR_BYTE_POS (struct buffer *buf, Ibyte *ptr)
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
830 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
831 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
832 Bytebpos retval = (ptr - buf->text->beg + 1
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
833 - ((ptr - buf->text->beg + 1) > buf->text->gpt
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
834 ? buf->text->gap_size : (Bytebpos) 0));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
835 ASSERT_VALID_BYTEBPOS_UNSAFE (buf, retval);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
836 return retval;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
837 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
838
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
839 #define BUF_PTR_BYTE_POS(buf, ptr) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
840 bytebpos_to_charbpos (buf, BYTE_BUF_PTR_BYTE_POS (buf, ptr))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
841
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
842 /* Address of byte at position POS in buffer. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
843 DECLARE_INLINE_HEADER (
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
844 Ibyte *
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
845 BYTE_BUF_BYTE_ADDRESS (struct buffer *buf, Bytebpos pos)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
846 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
847 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
848 ASSERT_VALID_BYTEBPOS_UNSAFE (buf, pos);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
849 return BYTE_BUF_BYTE_ADDRESS_NO_VERIFY (buf, pos);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
850 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
851
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
852 #define BUF_BYTE_ADDRESS(buf, pos) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
853 BYTE_BUF_BYTE_ADDRESS (buf, charbpos_to_bytebpos (buf, pos))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
854
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
855 /* Address of byte before position POS in buffer. */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
856 DECLARE_INLINE_HEADER (
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
857 Ibyte *
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
858 BYTE_BUF_BYTE_ADDRESS_BEFORE (struct buffer *buf, Bytebpos pos)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
859 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
860 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
861 ASSERT_VALID_BYTEBPOS_UNSAFE (buf, pos);
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
862 return (buf->text->beg +
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
863 ((pos > buf->text->gpt ? (pos + buf->text->gap_size) : pos)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
864 - 2));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
865 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
866
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
867 #define BUF_BYTE_ADDRESS_BEFORE(buf, pos) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
868 BYTE_BUF_BYTE_ADDRESS_BEFORE (buf, charbpos_to_bytebpos (buf, pos))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
869
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
870 /*----------------------------------------------------------------------*/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
871 /* Converting between buffer bytes and Emacs characters */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
872 /*----------------------------------------------------------------------*/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
873
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
874 /* The character at position POS in buffer. */
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
875
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
876 #define BYTE_BUF_FETCH_CHAR(buf, pos) \
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
877 itext_ichar_fmt (BYTE_BUF_BYTE_ADDRESS (buf, pos), BUF_FORMAT (buf), \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
878 wrap_buffer (buf))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
879 #define BUF_FETCH_CHAR(buf, pos) \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
880 BYTE_BUF_FETCH_CHAR (buf, charbpos_to_bytebpos (buf, pos))
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
881
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
882 /* The "raw value" of the character at position POS in buffer.
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
883 See ichar_to_raw(). */
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
884
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
885 #define BYTE_BUF_FETCH_CHAR_RAW(buf, pos) \
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
886 itext_ichar_raw_fmt (BYTE_BUF_BYTE_ADDRESS (buf, pos), BUF_FORMAT (buf))
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
887 #define BUF_FETCH_CHAR_RAW(buf, pos) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
888 BYTE_BUF_FETCH_CHAR_RAW (buf, charbpos_to_bytebpos (buf, pos))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
889
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
890 /* The character at position POS in buffer, as a string. This is
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
891 equivalent to set_itext_ichar (str, BUF_FETCH_CHAR (buf, pos))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
892 but is faster for Mule. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
893
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
894 # define BYTE_BUF_ITEXT_COPY_ICHAR(buf, pos, str) \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
895 (BUF_FORMAT (buf) == FORMAT_DEFAULT ? \
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
896 itext_copy_ichar (BYTE_BUF_BYTE_ADDRESS (buf, pos), str) : \
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
897 set_itext_ichar (str, BYTE_BUF_FETCH_CHAR (buf, pos)))
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
898 #define BUF_ITEXT_COPY_ICHAR(buf, pos, str) \
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
899 BYTE_BUF_ITEXT_COPY_ICHAR (buf, charbpos_to_bytebpos (buf, pos), str)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
900
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
901
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
902 /************************************************************************/
440
8de8e3f6228a Import from CVS: tag r21-2-28
cvs
parents: 434
diff changeset
903 /* */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
904 /* higher-level buffer-position functions */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
905 /* */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
906 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
907
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
908 /*----------------------------------------------------------------------*/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
909 /* Settor macros for important positions in a buffer */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
910 /*----------------------------------------------------------------------*/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
911
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
912 /* Set beginning of accessible range of buffer. */
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
913 #define SET_BOTH_BUF_BEGV(buf, val, bpval) \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
914 do \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
915 { \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
916 (buf)->begv = (bpval); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
917 (buf)->bufbegv = (val); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
918 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
919
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
920 /* Set end of accessible range of buffer. */
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
921 #define SET_BOTH_BUF_ZV(buf, val, bpval) \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
922 do \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
923 { \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
924 (buf)->zv = (bpval); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
925 (buf)->bufzv = (val); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
926 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
927
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
928 /* Set point. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
929 /* Since BEGV and ZV are almost never set, it's reasonable to enforce
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 650
diff changeset
930 the restriction that the Charbpos and Bytebpos values must both be
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
931 specified. However, point is set in lots and lots of places. So
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
932 we provide the ability to specify both (for efficiency) or just
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
933 one. */
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
934 #define BOTH_BUF_SET_PT(buf, val, bpval) set_buffer_point (buf, val, bpval)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
935 #define BYTE_BUF_SET_PT(buf, bpval) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
936 do \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
937 { \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
938 Bytebpos __bpbsp_bpval = (bpval); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
939 BOTH_BUF_SET_PT (buf, bytebpos_to_charbpos (buf, __bpbsp_bpval), \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
940 __bpbsp_bpval); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
941 } while (0)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
942 #define BUF_SET_PT(buf, value) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
943 do \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
944 { \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
945 Bytebpos __bsp_val = (value); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
946 BOTH_BUF_SET_PT (buf, __bsp_val, charbpos_to_bytebpos (buf, __bsp_val)); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
947 } while (0)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
948
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
949
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
950 #if 0 /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
951 /* These macros exist in FSFmacs because SET_PT() in FSFmacs incorrectly
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
952 does too much stuff, such as moving out of invisible extents. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
953 #define TEMP_SET_PT(position) (temp_set_point ((position), current_buffer))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
954 #define SET_BUF_PT(buf, value) ((buf)->pt = (value))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
955 #endif /* FSFmacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
956
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
957 /*----------------------------------------------------------------------*/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
958 /* Miscellaneous buffer values */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
959 /*----------------------------------------------------------------------*/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
960
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
961 /* Number of characters in buffer */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
962 #define BUF_SIZE(buf) (BUF_Z (buf) - BUF_BEG (buf))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
963
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
964 /* Is this buffer narrowed? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
965 #define BUF_NARROWED(buf) \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
966 ((BYTE_BUF_BEGV (buf) != BYTE_BUF_BEG (buf)) || \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
967 (BYTE_BUF_ZV (buf) != BYTE_BUF_Z (buf)))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
968
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
969 /* Modification count */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
970 #define BUF_MODIFF(buf) ((buf)->text->modiff)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
971
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
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parents: 814
diff changeset
972 /* Saved modification count */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
973 #define BUF_SAVE_MODIFF(buf) ((buf)->text->save_modiff)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
974
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
975 /* Face changed. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
976 #define BUF_FACECHANGE(buf) ((buf)->face_change)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
977
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
978 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
979 int
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
980 POINT_MARKER_P (Lisp_Object marker)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
981 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
982 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
983 return (XMARKER (marker)->buffer != 0 &&
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
984 EQ (marker, XMARKER (marker)->buffer->point_marker));
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
985 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
986
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
987 #define BUF_MARKERS(buf) ((buf)->markers)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
988
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
989 #ifdef MULE
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
990
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
991 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
992 Lisp_Object
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
993 BUFFER_CATEGORY_TABLE (struct buffer *buf)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
994 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
995 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
996 return buf ? buf->category_table : Vstandard_category_table;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
997 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
998
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
999 #endif /* MULE */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1000
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1001 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1002 Lisp_Object
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1003 BUFFER_SYNTAX_TABLE (struct buffer *buf)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1004 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1005 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1006 return buf ? buf->syntax_table : Vstandard_syntax_table;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1007 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1008
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1009 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1010 Lisp_Object
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1011 BUFFER_MIRROR_SYNTAX_TABLE (struct buffer *buf)
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1012 )
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1013 {
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1014 return buf ? buf->mirror_syntax_table :
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1015 XCHAR_TABLE (Vstandard_syntax_table)->mirror_table;
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1016 }
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1017
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1018 /* WARNING:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1019
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1020 The new definitions of CEILING_OF() and FLOOR_OF() differ semantically
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1021 from the old ones (in FSF Emacs and XEmacs 19.11 and before).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1022 Conversion is as follows:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1023
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1024 OLD_BYTE_CEILING_OF(n) = NEW_BYTE_CEILING_OF(n) - 1
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1025 OLD_BYTE_FLOOR_OF(n) = NEW_BYTE_FLOOR_OF(n + 1)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1026
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1027 The definitions were changed because the new definitions are more
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1028 consistent with the way everything else works in XEmacs.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1029 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1030
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1031 /* Properties of CEILING_OF and FLOOR_OF (also apply to BYTE_ variants):
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1032
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1033 1) FLOOR_OF (CEILING_OF (n)) = n
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1034 CEILING_OF (FLOOR_OF (n)) = n
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1035
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1036 2) CEILING_OF (n) = n if and only if n = ZV
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1037 FLOOR_OF (n) = n if and only if n = BEGV
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1038
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1039 3) CEILING_OF (CEILING_OF (n)) = ZV
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1040 FLOOR_OF (FLOOR_OF (n)) = BEGV
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1041
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1042 4) The bytes in the regions
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1043
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1044 [BYTE_ADDRESS (n), BYTE_ADDRESS_BEFORE (CEILING_OF (n))]
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1045
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1046 and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1047
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1048 [BYTE_ADDRESS (FLOOR_OF (n)), BYTE_ADDRESS_BEFORE (n)]
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1049
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1050 are contiguous.
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1051
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1052 A typical loop using CEILING_OF to process contiguous ranges of text
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1053 between [from, to) looks like this:
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1054
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1055 {
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1056 Bytebpos pos = from;
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1057
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1058 while (pos < to)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1059 {
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1060 Bytebpos ceil = BYTE_BUF_CEILING_OF (buf, pos);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1061 ceil = min (to, ceil);
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1062 process_ibyte_string (BYTE_BUF_BYTE_ADDRESS (buf, pos), ceil - pos);
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1063 pos = ceil;
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1064 }
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1065 }
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1066
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1067 Currently there will be at most two iterations in the loop, but it is
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1068 written in such a way that it will still work if the buffer
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1069 representation is changed to have multiple gaps in it.
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1070 */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1071
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1072
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1073 /* Return the maximum position in the buffer it is safe to scan forwards
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1074 past N to. This is used to prevent buffer scans from running into
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1075 the gap (e.g. search.c). All characters between N and CEILING_OF(N)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1076 are located contiguous in memory. Note that the character *at*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1077 CEILING_OF(N) is not contiguous in memory. */
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1078 #define BYTE_BUF_CEILING_OF(b, n) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1079 ((n) < (b)->text->gpt && (b)->text->gpt < BYTE_BUF_ZV (b) ? \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1080 (b)->text->gpt : BYTE_BUF_ZV (b))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1081 #define BUF_CEILING_OF(b, n) \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1082 bytebpos_to_charbpos (b, BYTE_BUF_CEILING_OF (b, charbpos_to_bytebpos (b, n)))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1083
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1084 /* Return the minimum position in the buffer it is safe to scan backwards
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1085 past N to. All characters between FLOOR_OF(N) and N are located
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1086 contiguous in memory. Note that the character *at* N may not be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1087 contiguous in memory. */
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1088 #define BYTE_BUF_FLOOR_OF(b, n) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1089 (BYTE_BUF_BEGV (b) < (b)->text->gpt && (b)->text->gpt < (n) ? \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1090 (b)->text->gpt : BYTE_BUF_BEGV (b))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1091 #define BUF_FLOOR_OF(b, n) \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1092 bytebpos_to_charbpos (b, BYTE_BUF_FLOOR_OF (b, charbpos_to_bytebpos (b, n)))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1093
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1094 #define BYTE_BUF_CEILING_OF_IGNORE_ACCESSIBLE(b, n) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1095 ((n) < (b)->text->gpt && (b)->text->gpt < BYTE_BUF_Z (b) ? \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1096 (b)->text->gpt : BYTE_BUF_Z (b))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1097 #define BUF_CEILING_OF_IGNORE_ACCESSIBLE(b, n) \
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 650
diff changeset
1098 bytebpos_to_charbpos \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1099 (b, BYTE_BUF_CEILING_OF_IGNORE_ACCESSIBLE (b, charbpos_to_bytebpos (b, n)))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1100
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1101 #define BYTE_BUF_FLOOR_OF_IGNORE_ACCESSIBLE(b, n) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1102 (BYTE_BUF_BEG (b) < (b)->text->gpt && (b)->text->gpt < (n) ? \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1103 (b)->text->gpt : BYTE_BUF_BEG (b))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1104 #define BUF_FLOOR_OF_IGNORE_ACCESSIBLE(b, n) \
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 650
diff changeset
1105 bytebpos_to_charbpos \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1106 (b, BYTE_BUF_FLOOR_OF_IGNORE_ACCESSIBLE (b, charbpos_to_bytebpos (b, n)))
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1107
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1108 /* Iterate over contiguous chunks of text in buffer BUF, starting at POS,
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1109 of length LEN. Evaluates POS and LEN only once, but BUF multiply. In
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1110 each iteration, store the current chunk into RUNPTR/RUNLEN, which will
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1111 be automatically declared (don't declare them yourself). This does not
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1112 respect the limits of accessibility (BUF_BEGV/BUF_ZV); if you want these
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1113 limits respected, you need to impose them yourself.
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1114
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1115 NOTE: This must be surrounded with braces! */
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1116
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1117 #define BUFFER_TEXT_LOOP(buf, pos, len, runptr, runlen) \
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1118 Ibyte *runptr; \
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1119 Bytecount runlen; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1120 Bytebpos BTL_pos = (pos); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1121 Bytebpos BTL_len = (len); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1122 for (runptr = BYTE_BUF_BYTE_ADDRESS (buf, BTL_pos), \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1123 runlen = BYTE_BUF_CEILING_OF_IGNORE_ACCESSIBLE (buf, BTL_pos) - BTL_pos, \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1124 runlen = min (BTL_len, runlen); \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1125 BTL_len > 0; \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1126 BTL_pos += runlen, \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1127 BTL_len -= runlen, \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1128 runptr = BYTE_BUF_BYTE_ADDRESS (buf, BTL_pos), \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1129 runlen = BYTE_BUF_CEILING_OF_IGNORE_ACCESSIBLE (buf, BTL_pos) - BTL_pos, \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1130 runlen = min (BTL_len, runlen))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1131
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1132 /* This structure marks which slots in a buffer have corresponding
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1133 default values in Vbuffer_defaults.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1134 Each such slot has a nonzero value in this structure.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1135 The value has only one nonzero bit.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1136
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1137 When a buffer has its own local value for a slot,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1138 the bit for that slot (found in the same slot in this structure)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1139 is turned on in the buffer's local_var_flags slot.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1140
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1141 If a slot in this structure is zero, then even though there may
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1142 be a DEFVAR_BUFFER_LOCAL for the slot, there is no default value for it;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1143 and the corresponding slot in Vbuffer_defaults is not used. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1144
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1145 extern struct buffer buffer_local_flags;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1146
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1147
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1148 /* Allocation of buffer data. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1149
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1150 #ifdef REL_ALLOC
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1151
440
8de8e3f6228a Import from CVS: tag r21-2-28
cvs
parents: 434
diff changeset
1152 char *r_alloc (unsigned char **, size_t);
8de8e3f6228a Import from CVS: tag r21-2-28
cvs
parents: 434
diff changeset
1153 char *r_re_alloc (unsigned char **, size_t);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1154 void r_alloc_free (unsigned char **);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1155
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1156 #define BUFFER_ALLOC(data, size) \
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1157 ((Ibyte *) r_alloc ((unsigned char **) &data, (size) * sizeof(Ibyte)))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1158 #define BUFFER_REALLOC(data, size) \
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1159 ((Ibyte *) r_re_alloc ((unsigned char **) &data, (size) * sizeof(Ibyte)))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1160 #define BUFFER_FREE(data) r_alloc_free ((unsigned char **) &(data))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1161 #define R_ALLOC_DECLARE(var,data) r_alloc_declare (&(var), data)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1162
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1163 #else /* !REL_ALLOC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1164
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1165 #define BUFFER_ALLOC(data,size)\
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1166 (data = xnew_array (Ibyte, size))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1167 #define BUFFER_REALLOC(data,size)\
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1168 ((Ibyte *) xrealloc (data, (size) * sizeof(Ibyte)))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1169 /* Avoid excess parentheses, or syntax errors may rear their heads. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1170 #define BUFFER_FREE(data) xfree (data)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1171 #define R_ALLOC_DECLARE(var,data)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1172
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1173 #endif /* !REL_ALLOC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1174
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1175
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1176 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1177 /* Case conversion */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1178 /************************************************************************/
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1179
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1180 /* A "trt" table is a mapping from characters to other characters,
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1181 typically used to convert between uppercase and lowercase.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1182 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1183
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1184 /* The _1 macros are named as such because they assume that you have
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1185 already guaranteed that the character values are all in the range
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1186 0 - 255. Bad lossage will happen otherwise. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1187
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1188 #define MAKE_TRT_TABLE() Fmake_char_table (Qgeneric)
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1189 DECLARE_INLINE_HEADER (
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1190 Ichar
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1191 TRT_TABLE_OF (Lisp_Object table, Ichar ch)
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1192 )
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1193 {
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1194 Lisp_Object TRT_char;
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1195 TRT_char = get_char_table (ch, table);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1196 if (NILP (TRT_char))
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1197 return ch;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1198 else
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1199 return XCHAR (TRT_char);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1200 }
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1201 #define SET_TRT_TABLE_OF(table, ch1, ch2) \
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1202 Fput_char_table (make_char (ch1), make_char (ch2), table)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1203
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1204 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1205 Lisp_Object
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1206 BUFFER_CASE_TABLE (struct buffer *buf)
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1207 )
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1208 {
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1209 return buf ? buf->case_table : Vstandard_case_table;
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1210 }
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1211
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1212 /* Macros used below. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1213 #define DOWNCASE_TABLE_OF(buf, c) \
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1214 TRT_TABLE_OF (XCASE_TABLE_DOWNCASE (BUFFER_CASE_TABLE (buf)), c)
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1215 #define UPCASE_TABLE_OF(buf, c) \
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1216 TRT_TABLE_OF (XCASE_TABLE_UPCASE (BUFFER_CASE_TABLE (buf)), c)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1217
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1218 /* 1 if CH is upper case. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1219
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1220 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1221 int
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1222 UPPERCASEP (struct buffer *buf, Ichar ch)
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1223 )
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1224 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1225 return DOWNCASE_TABLE_OF (buf, ch) != ch;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1226 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1227
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1228 /* 1 if CH is lower case. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1229
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1230 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1231 int
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1232 LOWERCASEP (struct buffer *buf, Ichar ch)
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1233 )
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1234 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1235 return (UPCASE_TABLE_OF (buf, ch) != ch &&
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1236 DOWNCASE_TABLE_OF (buf, ch) == ch);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1237 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1238
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1239 /* 1 if CH is neither upper nor lower case. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1240
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1241 DECLARE_INLINE_HEADER (
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1242 int
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1243 NOCASEP (struct buffer *buf, Ichar ch)
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1244 )
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1245 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1246 return UPCASE_TABLE_OF (buf, ch) == ch;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1247 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1248
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1249 /* Upcase a character, or make no change if that cannot be done. */
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1250
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1251 DECLARE_INLINE_HEADER (
867
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1252 Ichar
804517e16990 [xemacs-hg @ 2002-06-05 09:54:39 by ben]
ben
parents: 826
diff changeset
1253 UPCASE (struct buffer *buf, Ichar ch)
826
6728e641994e [xemacs-hg @ 2002-05-05 11:30:15 by ben]
ben
parents: 814
diff changeset
1254 )
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1255 {
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1256 return (DOWNCASE_TABLE_OF (buf, ch) == ch) ? UPCASE_TABLE_OF (buf, ch) : ch;
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1257 }
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1258
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1259 /* Upcase a character known to be not upper case. Unused. */
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1260
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1261 #define UPCASE1(buf, ch) UPCASE_TABLE_OF (buf, ch)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1262
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1263 /* Downcase a character, or make no change if that cannot be done. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1264
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1265 #define DOWNCASE(buf, ch) DOWNCASE_TABLE_OF (buf, ch)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1266
440
8de8e3f6228a Import from CVS: tag r21-2-28
cvs
parents: 434
diff changeset
1267 #endif /* INCLUDED_buffer_h_ */