/* Buffer insertion/deletion and gap motion for XEmacs. Copyright (C) 1985-1994 Free Software Foundation, Inc. This file is part of XEmacs. XEmacs is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs. If not, see . */ /* Synched up with: Not in FSF. */ /* Mostly rewritten by Ben Wing. */ #ifndef INCLUDED_insdel_h_ #define INCLUDED_insdel_h_ /************************************************************************/ /* changing a buffer's text */ /************************************************************************/ int begin_multiple_change (struct buffer *buf, Charbpos start, Charbpos end); void end_multiple_change (struct buffer *buf, int count); /* flags for functions below */ #define INSDEL_BEFORE_MARKERS 1 #define INSDEL_NO_LOCKING 2 Charcount buffer_insert_string_1 (struct buffer *buf, Charbpos pos, const Ibyte *nonreloc, Lisp_Object reloc, Bytecount offset, Bytecount length, int flags); Charcount buffer_insert_raw_string_1 (struct buffer *buf, Charbpos pos, const Ibyte *nonreloc, Bytecount length, int flags); Charcount buffer_insert_lisp_string_1 (struct buffer *buf, Charbpos pos, Lisp_Object str, int flags); Charcount buffer_insert_ascstring_1 (struct buffer *buf, Charbpos pos, const Ascbyte *s, int flags); Charcount buffer_insert_emacs_char_1 (struct buffer *buf, Charbpos pos, Ichar ch, int flags); Charcount buffer_insert_c_char_1 (struct buffer *buf, Charbpos pos, char c, int flags); Charcount buffer_insert_from_buffer_1 (struct buffer *buf, Charbpos pos, struct buffer *buf2, Charbpos pos2, Charcount length, int flags); /* Macros for insertion functions that insert at point after markers. All of these can GC. */ #define buffer_insert_string(buf, nonreloc, reloc, offset, length) \ buffer_insert_string_1 (buf, -1, nonreloc, reloc, offset, length, 0) #define buffer_insert_raw_string(buf, string, length) \ buffer_insert_raw_string_1 (buf, -1, string, length, 0) #define buffer_insert_ascstring(buf, s) \ buffer_insert_ascstring_1 (buf, -1, s, 0) #define buffer_insert_lisp_string(buf, str) \ buffer_insert_lisp_string_1 (buf, -1, str, 0) #define buffer_insert_c_char(buf, c) \ buffer_insert_c_char_1 (buf, -1, c, 0) #define buffer_insert_emacs_char(buf, ch) \ buffer_insert_emacs_char_1 (buf, -1, ch, 0) #define buffer_insert_from_buffer(buf, b, index, length) \ buffer_insert_from_buffer_1 (buf, -1, b, index, length, 0) void buffer_delete_range (struct buffer *buf, Charbpos from, Charbpos to, int flags); void buffer_replace_char (struct buffer *b, Charbpos pos, Ichar ch, int not_real_change, int force_lock_check); /************************************************************************/ /* tracking buffer changes */ /************************************************************************/ /* Split into two parts. One part goes with a buffer's text (possibly shared), the other with the buffer itself. */ struct buffer_text_change_data { /* multiple change stuff */ int in_multiple_change; Charbpos mc_begin, mc_orig_end, mc_new_end; int mc_begin_signaled; }; struct each_buffer_change_data { Charcount begin_unchanged, end_unchanged; /* redisplay needs to know if a newline was deleted so its incremental-redisplay algorithm will fail */ int newline_was_deleted; Charcount begin_extent_unchanged, end_extent_unchanged; }; /* Number of characters at the beginning and end of the buffer that have not changed since the last call to buffer_reset_changes(). If no changes have occurred since then, both values will be -1. "Changed" means that the text has changed. */ #define BUF_BEGIN_UNCHANGED(buf) ((buf)->changes->begin_unchanged) #define BUF_END_UNCHANGED(buf) ((buf)->changes->end_unchanged) /* Number of characters at the beginning and end of the buffer that have not had a covering extent change since the last call to buffer_reset_changes (). If no changes have occurred since then, both values will be -1. "Changed" means that the extents covering the text have changed. */ #define BUF_EXTENT_BEGIN_UNCHANGED(buf) \ ((buf)->changes->begin_extent_unchanged) #define BUF_EXTENT_END_UNCHANGED(buf) \ ((buf)->changes->end_extent_unchanged) #define BUF_NEWLINE_WAS_DELETED(buf) \ ((buf)->changes->newline_was_deleted) void buffer_extent_signal_changed_region (struct buffer *buf, Charbpos start, Charbpos end); void buffer_reset_changes (struct buffer *buf); /************************************************************************/ /* other related functions */ /************************************************************************/ Membpos do_marker_adjustment (Membpos mpos, Membpos from, Membpos to, Bytecount amount); void fixup_internal_substring (const Ibyte *nonreloc, Lisp_Object reloc, Bytecount offset, Bytecount *len); /* In font-lock.c */ void font_lock_maybe_update_syntactic_caches (struct buffer *buf, Charbpos start, Charbpos orig_end, Charbpos new_end); void font_lock_buffer_was_killed (struct buffer *buf); void barf_if_buffer_read_only (struct buffer *buf, Charbpos from, Charbpos to); void init_buffer_text (struct buffer *b); void uninit_buffer_text (struct buffer *b); #endif /* INCLUDED_insdel_h_ */