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1 /* Buffer insertion/deletion and gap motion for XEmacs.
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2 Copyright (C) 1985-1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not in FSF. */
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22
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23 /* Mostly rewritten by Ben Wing. */
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24
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398
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25 #ifndef INCLUDED_insdel_h_
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26 #define INCLUDED_insdel_h_
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0
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27
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28 /************************************************************************/
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29 /* changing a buffer's text */
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30 /************************************************************************/
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31
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272
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32 int begin_multiple_change (struct buffer *buf, Bufpos start, Bufpos end);
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33 void end_multiple_change (struct buffer *buf, int count);
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0
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34
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35 /* flags for functions below */
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36
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37 #define INSDEL_BEFORE_MARKERS 1
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38 #define INSDEL_NO_LOCKING 2
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39
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40 Charcount buffer_insert_string_1 (struct buffer *buf, Bufpos pos,
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398
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41 const Bufbyte *nonreloc, Lisp_Object reloc,
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0
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42 Bytecount offset, Bytecount length,
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43 int flags);
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44 Charcount buffer_insert_raw_string_1 (struct buffer *buf, Bufpos pos,
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398
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45 const Bufbyte *nonreloc,
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0
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46 Bytecount length, int flags);
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47 Charcount buffer_insert_lisp_string_1 (struct buffer *buf, Bufpos pos,
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48 Lisp_Object str, int flags);
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49 Charcount buffer_insert_c_string_1 (struct buffer *buf, Bufpos pos,
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398
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50 const char *s, int flags);
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0
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51 Charcount buffer_insert_emacs_char_1 (struct buffer *buf, Bufpos pos,
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52 Emchar ch, int flags);
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53 Charcount buffer_insert_c_char_1 (struct buffer *buf, Bufpos pos, char c,
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54 int flags);
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55 Charcount buffer_insert_from_buffer_1 (struct buffer *buf, Bufpos pos,
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56 struct buffer *buf2, Bufpos pos2,
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57 Charcount length, int flags);
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58
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59 /* Macros for insertion functions that insert at point after markers.
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60 All of these can GC. */
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61
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62 #define buffer_insert_string(buf, nonreloc, reloc, offset, length) \
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63 buffer_insert_string_1 (buf, -1, nonreloc, reloc, offset, length, 0)
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64 #define buffer_insert_raw_string(buf, string, length) \
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65 buffer_insert_raw_string_1 (buf, -1, string, length, 0)
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66 #define buffer_insert_c_string(buf, s) \
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67 buffer_insert_c_string_1 (buf, -1, s, 0)
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68 #define buffer_insert_lisp_string(buf, str) \
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69 buffer_insert_lisp_string_1 (buf, -1, str, 0)
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70 #define buffer_insert_c_char(buf, c) \
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71 buffer_insert_c_char_1 (buf, -1, c, 0)
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72 #define buffer_insert_emacs_char(buf, ch) \
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73 buffer_insert_emacs_char_1 (buf, -1, ch, 0)
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74 #define buffer_insert_from_buffer(buf, b, index, length) \
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75 buffer_insert_from_buffer_1 (buf, -1, b, index, length, 0)
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76
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272
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77 void buffer_delete_range (struct buffer *buf, Bufpos from, Bufpos to,
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78 int flags);
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79 void buffer_replace_char (struct buffer *b, Bufpos pos, Emchar ch,
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80 int not_real_change, int force_lock_check);
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0
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81
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82
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83 /************************************************************************/
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84 /* tracking buffer changes */
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85 /************************************************************************/
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86
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87 /* Split into two parts. One part goes with a buffer's text (possibly
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88 shared), the other with the buffer itself. */
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89
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90 struct buffer_text_change_data
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91 {
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92 /* multiple change stuff */
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93 int in_multiple_change;
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94 Bufpos mc_begin, mc_orig_end, mc_new_end;
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95 int mc_begin_signaled;
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96 };
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97
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98 struct each_buffer_change_data
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99 {
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100 Charcount begin_unchanged, end_unchanged;
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101 /* redisplay needs to know if a newline was deleted so its
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102 incremental-redisplay algorithm will fail */
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103 int newline_was_deleted;
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104 Charcount begin_extent_unchanged, end_extent_unchanged;
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105 };
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106
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107 /* Number of characters at the beginning and end of the buffer that
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108 have not changed since the last call to buffer_reset_changes().
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109 If no changes have occurred since then, both values will be -1.
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110
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111 "Changed" means that the text has changed. */
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112
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113 #define BUF_BEGIN_UNCHANGED(buf) ((buf)->changes->begin_unchanged)
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114 #define BUF_END_UNCHANGED(buf) ((buf)->changes->end_unchanged)
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115
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116 /* Number of characters at the beginning and end of the buffer that
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117 have not had a covering extent change since the last call to
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118 buffer_reset_changes (). If no changes have occurred since then,
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119 both values will be -1.
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120
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121 "Changed" means that the extents covering the text have changed. */
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122
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123 #define BUF_EXTENT_BEGIN_UNCHANGED(buf) \
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124 ((buf)->changes->begin_extent_unchanged)
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125 #define BUF_EXTENT_END_UNCHANGED(buf) \
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126 ((buf)->changes->end_extent_unchanged)
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127
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128 #define BUF_NEWLINE_WAS_DELETED(buf) \
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129 ((buf)->changes->newline_was_deleted)
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130
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272
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131 void buffer_extent_signal_changed_region (struct buffer *buf,
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132 Bufpos start,
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133 Bufpos end);
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134 void buffer_reset_changes (struct buffer *buf);
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0
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135
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136
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137
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138 /************************************************************************/
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139 /* other related functions */
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140 /************************************************************************/
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141
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272
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142 Memind do_marker_adjustment (Memind mpos, Memind from,
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398
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143 Memind to, Bytecount amount);
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0
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144
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398
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145 void fixup_internal_substring (const Bufbyte *nonreloc,
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272
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146 Lisp_Object reloc,
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398
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147 Bytecount offset, Bytecount *len);
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0
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148
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149 /* In font-lock.c */
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272
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150 void font_lock_maybe_update_syntactic_caches (struct buffer *buf,
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151 Bufpos start,
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152 Bufpos orig_end,
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153 Bufpos new_end);
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154 void font_lock_buffer_was_killed (struct buffer *buf);
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0
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155
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272
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156 void barf_if_buffer_read_only (struct buffer *buf, Bufpos from,
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157 Bufpos to);
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0
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158
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373
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159 void init_buffer_text (struct buffer *b);
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160 void uninit_buffer_text (struct buffer *b);
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0
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161
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398
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162 #endif /* INCLUDED_insdel_h_ */
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