Commit | Line | Data |
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d427b66a | 1 | /* Definitions for interface to indent.c |
429ab54e | 2 | Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004, |
114f9c96 | 3 | 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
d427b66a JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
b9b1cc14 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
d427b66a | 8 | it under the terms of the GNU General Public License as published by |
b9b1cc14 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
d427b66a JB |
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 | |
b9b1cc14 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d427b66a | 19 | |
fafd594b KH |
20 | /* We introduce new member `tab_offset'. We need it because of the |
21 | existence of wide-column characters. There is a case that the | |
22 | line-break occurs at a wide-column character and the number of | |
23 | colums of the line gets less than width. | |
24 | ||
25 | Example (where W_ stands for a wide-column character): | |
26 | ---------- | |
27 | abcdefgh\\ | |
177c0ea7 | 28 | W_ |
fafd594b KH |
29 | ---------- |
30 | ||
177c0ea7 | 31 | To handle this case, we should not calculate the tab offset by |
fafd594b KH |
32 | tab_offset += width; |
33 | ||
177c0ea7 | 34 | Instead, we must remember tab_offset of the line. |
fafd594b KH |
35 | |
36 | */ | |
d427b66a JB |
37 | |
38 | struct position | |
39 | { | |
83155776 SM |
40 | EMACS_INT bufpos; |
41 | EMACS_INT bytepos; | |
42 | EMACS_INT hpos; | |
43 | EMACS_INT vpos; | |
44 | EMACS_INT prevhpos; | |
45 | EMACS_INT contin; | |
cf5db374 RS |
46 | /* Number of characters we have already handled |
47 | from the before and after strings at this position. */ | |
83155776 SM |
48 | EMACS_INT ovstring_chars_done; |
49 | EMACS_INT tab_offset; | |
d427b66a JB |
50 | }; |
51 | ||
83155776 SM |
52 | struct position *compute_motion P_ ((EMACS_INT from, EMACS_INT fromvpos, |
53 | EMACS_INT fromhpos, int did_motion, | |
54 | EMACS_INT to, EMACS_INT tovpos, | |
55 | EMACS_INT tohpos, | |
56 | EMACS_INT width, EMACS_INT hscroll, | |
57 | EMACS_INT tab_offset, struct window *)); | |
58 | struct position *vmotion P_ ((EMACS_INT from, EMACS_INT vtarget, | |
59 | struct window *)); | |
60 | EMACS_INT skip_invisible P_ ((EMACS_INT pos, EMACS_INT *next_boundary_p, | |
61 | EMACS_INT to, Lisp_Object window)); | |
d427b66a JB |
62 | |
63 | /* Value of point when current_column was called */ | |
83155776 | 64 | extern EMACS_INT last_known_column_point; |
63dec5bd JB |
65 | |
66 | /* Functions for dealing with the column cache. */ | |
67 | ||
e0f24100 | 68 | /* Return true if the display table DISPTAB specifies the same widths |
63dec5bd JB |
69 | for characters as WIDTHTAB. We use this to decide when to |
70 | invalidate the buffer's column_cache. */ | |
d3c92eee GM |
71 | int disptab_matches_widthtab P_ ((struct Lisp_Char_Table *disptab, |
72 | struct Lisp_Vector *widthtab)); | |
63dec5bd JB |
73 | |
74 | /* Recompute BUF's width table, using the display table DISPTAB. */ | |
d3c92eee GM |
75 | void recompute_width_table P_ ((struct buffer *buf, |
76 | struct Lisp_Char_Table *disptab)); | |
77 | ||
78 | ||
ab5796a9 MB |
79 | /* arch-tag: f9feb373-5bff-4f4f-9198-94805d00cfd7 |
80 | (do not change this comment) */ |