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comparison src/insdel.h @ 0:376386a54a3c r19-14

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Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
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-1:000000000000 0:376386a54a3c
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 extern int begin_multiple_change (struct buffer *buf, Bufpos start,
33 Bufpos end);
34 extern void end_multiple_change (struct buffer *buf, int count);
35
36 /* flags for functions below */
37
38 #define INSDEL_BEFORE_MARKERS 1
39 #define INSDEL_NO_LOCKING 2
40
41 Charcount buffer_insert_string_1 (struct buffer *buf, Bufpos pos,
42 CONST Bufbyte *nonreloc, Lisp_Object reloc,
43 Bytecount offset, Bytecount length,
44 int flags);
45 Charcount buffer_insert_raw_string_1 (struct buffer *buf, Bufpos pos,
46 CONST Bufbyte *nonreloc,
47 Bytecount length, int flags);
48 Charcount buffer_insert_lisp_string_1 (struct buffer *buf, Bufpos pos,
49 Lisp_Object str, int flags);
50 Charcount buffer_insert_c_string_1 (struct buffer *buf, Bufpos pos,
51 CONST char *s, int flags);
52 Charcount buffer_insert_emacs_char_1 (struct buffer *buf, Bufpos pos,
53 Emchar ch, int flags);
54 Charcount buffer_insert_c_char_1 (struct buffer *buf, Bufpos pos, char c,
55 int flags);
56 Charcount buffer_insert_from_buffer_1 (struct buffer *buf, Bufpos pos,
57 struct buffer *buf2, Bufpos pos2,
58 Charcount length, int flags);
59
60 /* Macros for insertion functions that insert at point after markers.
61 All of these can GC. */
62
63 #define buffer_insert_string(buf, nonreloc, reloc, offset, length) \
64 buffer_insert_string_1 (buf, -1, nonreloc, reloc, offset, length, 0)
65 #define buffer_insert_raw_string(buf, string, length) \
66 buffer_insert_raw_string_1 (buf, -1, string, length, 0)
67 #define buffer_insert_c_string(buf, s) \
68 buffer_insert_c_string_1 (buf, -1, s, 0)
69 #define buffer_insert_lisp_string(buf, str) \
70 buffer_insert_lisp_string_1 (buf, -1, str, 0)
71 #define buffer_insert_c_char(buf, c) \
72 buffer_insert_c_char_1 (buf, -1, c, 0)
73 #define buffer_insert_emacs_char(buf, ch) \
74 buffer_insert_emacs_char_1 (buf, -1, ch, 0)
75 #define buffer_insert_from_buffer(buf, b, index, length) \
76 buffer_insert_from_buffer_1 (buf, -1, b, index, length, 0)
77
78 extern void buffer_delete_range (struct buffer *buf, Bufpos from, Bufpos to,
79 int flags);
80 extern void buffer_replace_char (struct buffer *b, Bufpos pos, Emchar ch,
81 int not_real_change, int force_lock_check);
82
83
84
85
86 /************************************************************************/
87 /* tracking buffer changes */
88 /************************************************************************/
89
90 /* Split into two parts. One part goes with a buffer's text (possibly
91 shared), the other with the buffer itself. */
92
93 struct buffer_text_change_data
94 {
95 /* multiple change stuff */
96 int in_multiple_change;
97 Bufpos mc_begin, mc_orig_end, mc_new_end;
98 int mc_begin_signaled;
99 };
100
101 struct each_buffer_change_data
102 {
103 Charcount begin_unchanged, end_unchanged;
104 /* redisplay needs to know if a newline was deleted so its
105 incremental-redisplay algorithm will fail */
106 int newline_was_deleted;
107 Charcount begin_extent_unchanged, end_extent_unchanged;
108 };
109
110 /* Number of characters at the beginning and end of the buffer that
111 have not changed since the last call to buffer_reset_changes().
112 If no changes have occurred since then, both values will be -1.
113
114 "Changed" means that the text has changed. */
115
116 #define BUF_BEGIN_UNCHANGED(buf) ((buf)->changes->begin_unchanged)
117 #define BUF_END_UNCHANGED(buf) ((buf)->changes->end_unchanged)
118
119 /* Number of characters at the beginning and end of the buffer that
120 have not had a covering extent change since the last call to
121 buffer_reset_changes (). If no changes have occurred since then,
122 both values will be -1.
123
124 "Changed" means that the extents covering the text have changed. */
125
126 #define BUF_EXTENT_BEGIN_UNCHANGED(buf) \
127 ((buf)->changes->begin_extent_unchanged)
128 #define BUF_EXTENT_END_UNCHANGED(buf) \
129 ((buf)->changes->end_extent_unchanged)
130
131 #define BUF_NEWLINE_WAS_DELETED(buf) \
132 ((buf)->changes->newline_was_deleted)
133
134 extern void buffer_extent_signal_changed_region (struct buffer *buf,
135 Bufpos start,
136 Bufpos end);
137 extern void buffer_reset_changes (struct buffer *buf);
138
139
140
141
142 /************************************************************************/
143 /* other related functions */
144 /************************************************************************/
145
146 extern Memind do_marker_adjustment (Memind mpos, Memind from,
147 Memind to, int amount);
148
149 extern void fixup_internal_substring (CONST Bufbyte *nonreloc,
150 Lisp_Object reloc,
151 int offset, int *len);
152
153 /* In font-lock.c */
154 extern void font_lock_maybe_update_syntactic_caches (struct buffer *buf,
155 Bufpos start,
156 Bufpos orig_end,
157 Bufpos new_end);
158 extern void font_lock_buffer_was_killed (struct buffer *buf);
159
160 extern void barf_if_buffer_read_only (struct buffer *buf, Bufpos from,
161 Bufpos to);
162
163 /* In marker.c */
164 void init_buffer_markers (struct buffer *b);
165 void uninit_buffer_markers (struct buffer *b);
166
167 extern Lisp_Object make_string_from_buffer (struct buffer *buf, Bufpos pos,
168 Charcount length);
169 extern void init_buffer_text (struct buffer *b, int indirect_p);
170 extern void uninit_buffer_text (struct buffer *b, int indirect_p);
171
172
173
174 #endif /* _XEMACS_INSDEL_H_ */