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comparison src/insdel.h @ 428:3ecd8885ac67 r21-2-22

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Import from CVS: tag r21-2-22
author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
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children 8de8e3f6228a
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427:0a0253eac470 428:3ecd8885ac67
1 /* Buffer insertion/deletion and gap motion for XEmacs.
2 Copyright (C) 1985-1994 Free Software Foundation, Inc.
3
4 This file is part of XEmacs.
5
6 XEmacs is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
9 later version.
10
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with XEmacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
20
21 /* Synched up with: Not in FSF. */
22
23 /* Mostly rewritten by Ben Wing. */
24
25 #ifndef _XEMACS_INSDEL_H_
26 #define _XEMACS_INSDEL_H_
27
28 /************************************************************************/
29 /* changing a buffer's text */
30 /************************************************************************/
31
32 int begin_multiple_change (struct buffer *buf, Bufpos start, Bufpos end);
33 void end_multiple_change (struct buffer *buf, int count);
34
35 /* flags for functions below */
36
37 #define INSDEL_BEFORE_MARKERS 1
38 #define INSDEL_NO_LOCKING 2
39
40 Charcount buffer_insert_string_1 (struct buffer *buf, Bufpos pos,
41 CONST Bufbyte *nonreloc, Lisp_Object reloc,
42 Bytecount offset, Bytecount length,
43 int flags);
44 Charcount buffer_insert_raw_string_1 (struct buffer *buf, Bufpos pos,
45 CONST Bufbyte *nonreloc,
46 Bytecount length, int flags);
47 Charcount buffer_insert_lisp_string_1 (struct buffer *buf, Bufpos pos,
48 Lisp_Object str, int flags);
49 Charcount buffer_insert_c_string_1 (struct buffer *buf, Bufpos pos,
50 CONST char *s, int flags);
51 Charcount buffer_insert_emacs_char_1 (struct buffer *buf, Bufpos pos,
52 Emchar ch, int flags);
53 Charcount buffer_insert_c_char_1 (struct buffer *buf, Bufpos pos, char c,
54 int flags);
55 Charcount buffer_insert_from_buffer_1 (struct buffer *buf, Bufpos pos,
56 struct buffer *buf2, Bufpos pos2,
57 Charcount length, int flags);
58
59 /* Macros for insertion functions that insert at point after markers.
60 All of these can GC. */
61
62 #define buffer_insert_string(buf, nonreloc, reloc, offset, length) \
63 buffer_insert_string_1 (buf, -1, nonreloc, reloc, offset, length, 0)
64 #define buffer_insert_raw_string(buf, string, length) \
65 buffer_insert_raw_string_1 (buf, -1, string, length, 0)
66 #define buffer_insert_c_string(buf, s) \
67 buffer_insert_c_string_1 (buf, -1, s, 0)
68 #define buffer_insert_lisp_string(buf, str) \
69 buffer_insert_lisp_string_1 (buf, -1, str, 0)
70 #define buffer_insert_c_char(buf, c) \
71 buffer_insert_c_char_1 (buf, -1, c, 0)
72 #define buffer_insert_emacs_char(buf, ch) \
73 buffer_insert_emacs_char_1 (buf, -1, ch, 0)
74 #define buffer_insert_from_buffer(buf, b, index, length) \
75 buffer_insert_from_buffer_1 (buf, -1, b, index, length, 0)
76
77 void buffer_delete_range (struct buffer *buf, Bufpos from, Bufpos to,
78 int flags);
79 void buffer_replace_char (struct buffer *b, Bufpos pos, Emchar ch,
80 int not_real_change, int force_lock_check);
81
82
83 /************************************************************************/
84 /* tracking buffer changes */
85 /************************************************************************/
86
87 /* Split into two parts. One part goes with a buffer's text (possibly
88 shared), the other with the buffer itself. */
89
90 struct buffer_text_change_data
91 {
92 /* multiple change stuff */
93 int in_multiple_change;
94 Bufpos mc_begin, mc_orig_end, mc_new_end;
95 int mc_begin_signaled;
96 };
97
98 struct each_buffer_change_data
99 {
100 Charcount begin_unchanged, end_unchanged;
101 /* redisplay needs to know if a newline was deleted so its
102 incremental-redisplay algorithm will fail */
103 int newline_was_deleted;
104 Charcount begin_extent_unchanged, end_extent_unchanged;
105 };
106
107 /* Number of characters at the beginning and end of the buffer that
108 have not changed since the last call to buffer_reset_changes().
109 If no changes have occurred since then, both values will be -1.
110
111 "Changed" means that the text has changed. */
112
113 #define BUF_BEGIN_UNCHANGED(buf) ((buf)->changes->begin_unchanged)
114 #define BUF_END_UNCHANGED(buf) ((buf)->changes->end_unchanged)
115
116 /* Number of characters at the beginning and end of the buffer that
117 have not had a covering extent change since the last call to
118 buffer_reset_changes (). If no changes have occurred since then,
119 both values will be -1.
120
121 "Changed" means that the extents covering the text have changed. */
122
123 #define BUF_EXTENT_BEGIN_UNCHANGED(buf) \
124 ((buf)->changes->begin_extent_unchanged)
125 #define BUF_EXTENT_END_UNCHANGED(buf) \
126 ((buf)->changes->end_extent_unchanged)
127
128 #define BUF_NEWLINE_WAS_DELETED(buf) \
129 ((buf)->changes->newline_was_deleted)
130
131 void buffer_extent_signal_changed_region (struct buffer *buf,
132 Bufpos start,
133 Bufpos end);
134 void buffer_reset_changes (struct buffer *buf);
135
136
137
138 /************************************************************************/
139 /* other related functions */
140 /************************************************************************/
141
142 Memind do_marker_adjustment (Memind mpos, Memind from,
143 Memind to, Bytecount amount);
144
145 void fixup_internal_substring (CONST Bufbyte *nonreloc,
146 Lisp_Object reloc,
147 Bytecount offset, Bytecount *len);
148
149 /* In font-lock.c */
150 void font_lock_maybe_update_syntactic_caches (struct buffer *buf,
151 Bufpos start,
152 Bufpos orig_end,
153 Bufpos new_end);
154 void font_lock_buffer_was_killed (struct buffer *buf);
155
156 void barf_if_buffer_read_only (struct buffer *buf, Bufpos from,
157 Bufpos to);
158
159 void init_buffer_text (struct buffer *b);
160 void uninit_buffer_text (struct buffer *b);
161
162 #endif /* _XEMACS_INSDEL_H_ */