Commit | Line | Data |
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d427b66a | 1 | /* Definitions for interface to indent.c |
429ab54e GM |
2 | Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004, |
3 | 2005, 2006, 2007 Free Software Foundation, Inc. | |
d427b66a JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
d427b66a JB |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
d427b66a | 21 | |
fafd594b KH |
22 | /* We introduce new member `tab_offset'. We need it because of the |
23 | existence of wide-column characters. There is a case that the | |
24 | line-break occurs at a wide-column character and the number of | |
25 | colums of the line gets less than width. | |
26 | ||
27 | Example (where W_ stands for a wide-column character): | |
28 | ---------- | |
29 | abcdefgh\\ | |
177c0ea7 | 30 | W_ |
fafd594b KH |
31 | ---------- |
32 | ||
177c0ea7 | 33 | To handle this case, we should not calculate the tab offset by |
fafd594b KH |
34 | tab_offset += width; |
35 | ||
177c0ea7 | 36 | Instead, we must remember tab_offset of the line. |
fafd594b KH |
37 | |
38 | */ | |
d427b66a JB |
39 | |
40 | struct position | |
41 | { | |
83155776 SM |
42 | EMACS_INT bufpos; |
43 | EMACS_INT bytepos; | |
44 | EMACS_INT hpos; | |
45 | EMACS_INT vpos; | |
46 | EMACS_INT prevhpos; | |
47 | EMACS_INT contin; | |
cf5db374 RS |
48 | /* Number of characters we have already handled |
49 | from the before and after strings at this position. */ | |
83155776 SM |
50 | EMACS_INT ovstring_chars_done; |
51 | EMACS_INT tab_offset; | |
d427b66a JB |
52 | }; |
53 | ||
83155776 SM |
54 | struct position *compute_motion P_ ((EMACS_INT from, EMACS_INT fromvpos, |
55 | EMACS_INT fromhpos, int did_motion, | |
56 | EMACS_INT to, EMACS_INT tovpos, | |
57 | EMACS_INT tohpos, | |
58 | EMACS_INT width, EMACS_INT hscroll, | |
59 | EMACS_INT tab_offset, struct window *)); | |
60 | struct position *vmotion P_ ((EMACS_INT from, EMACS_INT vtarget, | |
61 | struct window *)); | |
62 | EMACS_INT skip_invisible P_ ((EMACS_INT pos, EMACS_INT *next_boundary_p, | |
63 | EMACS_INT to, Lisp_Object window)); | |
d427b66a JB |
64 | |
65 | /* Value of point when current_column was called */ | |
83155776 | 66 | extern EMACS_INT last_known_column_point; |
63dec5bd JB |
67 | |
68 | /* Functions for dealing with the column cache. */ | |
69 | ||
e0f24100 | 70 | /* Return true if the display table DISPTAB specifies the same widths |
63dec5bd JB |
71 | for characters as WIDTHTAB. We use this to decide when to |
72 | invalidate the buffer's column_cache. */ | |
d3c92eee GM |
73 | int disptab_matches_widthtab P_ ((struct Lisp_Char_Table *disptab, |
74 | struct Lisp_Vector *widthtab)); | |
63dec5bd JB |
75 | |
76 | /* Recompute BUF's width table, using the display table DISPTAB. */ | |
d3c92eee GM |
77 | void recompute_width_table P_ ((struct buffer *buf, |
78 | struct Lisp_Char_Table *disptab)); | |
79 | ||
80 | ||
ab5796a9 MB |
81 | /* arch-tag: f9feb373-5bff-4f4f-9198-94805d00cfd7 |
82 | (do not change this comment) */ |