1 | /* FriBidi |
2 | * run.h - text run data type |
3 | * |
4 | * Authors: |
5 | * Behdad Esfahbod, 2001, 2002, 2004 |
6 | * Dov Grobgeld, 1999, 2000 |
7 | * |
8 | * Copyright (C) 2004 Sharif FarsiWeb, Inc |
9 | * Copyright (C) 2001,2002 Behdad Esfahbod |
10 | * Copyright (C) 1999,2000 Dov Grobgeld |
11 | * |
12 | * This library is free software; you can redistribute it and/or |
13 | * modify it under the terms of the GNU Lesser General Public |
14 | * License as published by the Free Software Foundation; either |
15 | * version 2.1 of the License, or (at your option) any later version. |
16 | * |
17 | * This library is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
20 | * Lesser General Public License for more details. |
21 | * |
22 | * You should have received a copy of the GNU Lesser General Public License |
23 | * along with this library, in a file named COPYING; if not, write to the |
24 | * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
25 | * Boston, MA 02110-1301, USA |
26 | * |
27 | * For licensing issues, contact <fribidi.license@gmail.com>. |
28 | */ |
29 | #ifndef _RUN_H |
30 | #define _RUN_H |
31 | |
32 | #include "fribidi-common.h" |
33 | |
34 | #include <fribidi-common.h> |
35 | |
36 | #include <fribidi-types.h> |
37 | #include <fribidi-bidi-types.h> |
38 | |
39 | #include <fribidi-begindecls.h> |
40 | |
41 | typedef struct _FriBidiRunStruct FriBidiRun; |
42 | |
43 | struct _FriBidiRunStruct |
44 | { |
45 | FriBidiRun *prev; |
46 | FriBidiRun *next; |
47 | |
48 | FriBidiStrIndex pos, len; |
49 | FriBidiCharType type; |
50 | FriBidiLevel level; |
51 | FriBidiLevel isolate_level; |
52 | FriBidiBracketType bracket_type; |
53 | |
54 | /* Additional links for connecting the isolate tree */ |
55 | FriBidiRun *prev_isolate, *next_isolate; |
56 | }; |
57 | |
58 | |
59 | FriBidiRun * |
60 | new_run ( |
61 | void |
62 | ) |
63 | FRIBIDI_GNUC_HIDDEN FRIBIDI_GNUC_MALLOC FRIBIDI_GNUC_WARN_UNUSED; |
64 | |
65 | FriBidiRun *new_run_list ( |
66 | void |
67 | ) |
68 | FRIBIDI_GNUC_HIDDEN FRIBIDI_GNUC_MALLOC FRIBIDI_GNUC_WARN_UNUSED; |
69 | |
70 | void free_run_list ( |
71 | FriBidiRun *run_list |
72 | ) FRIBIDI_GNUC_HIDDEN; |
73 | |
74 | FriBidiRun *run_list_encode_bidi_types ( |
75 | const FriBidiCharType *bidi_types, |
76 | const FriBidiBracketType *bracket_types, |
77 | const FriBidiStrIndex len |
78 | ) |
79 | FRIBIDI_GNUC_HIDDEN FRIBIDI_GNUC_WARN_UNUSED; |
80 | |
81 | fribidi_boolean shadow_run_list ( |
82 | FriBidiRun *base, |
83 | FriBidiRun *over, |
84 | fribidi_boolean preserve_length |
85 | ) |
86 | FRIBIDI_GNUC_HIDDEN FRIBIDI_GNUC_WARN_UNUSED; |
87 | |
88 | |
89 | #define swap(a,b) \ |
90 | FRIBIDI_BEGIN_STMT \ |
91 | void *t; \ |
92 | (t) = (a); \ |
93 | (a) = (b); \ |
94 | (b) = (t); \ |
95 | FRIBIDI_END_STMT |
96 | |
97 | #define merge_lists(a,b) \ |
98 | FRIBIDI_BEGIN_STMT \ |
99 | swap((a)->prev->next, (b)->prev->next); \ |
100 | swap((a)->prev, (b)->prev); \ |
101 | FRIBIDI_END_STMT |
102 | |
103 | #define delete_node(x) \ |
104 | FRIBIDI_BEGIN_STMT \ |
105 | (x)->prev->next = (x)->next; \ |
106 | (x)->next->prev = (x)->prev; \ |
107 | FRIBIDI_END_STMT |
108 | |
109 | #define insert_node_before(x, list) \ |
110 | FRIBIDI_BEGIN_STMT \ |
111 | (x)->prev = (list)->prev; \ |
112 | (list)->prev->next = (x); \ |
113 | (x)->next = (list); \ |
114 | (list)->prev = (x); \ |
115 | FRIBIDI_END_STMT |
116 | |
117 | #define move_node_before(x, list) \ |
118 | FRIBIDI_BEGIN_STMT \ |
119 | if ((x)->prev) { \ |
120 | delete_node(x); \ |
121 | } \ |
122 | insert_node_before((x), (list)); \ |
123 | FRIBIDI_END_STMT |
124 | |
125 | #define for_run_list(x, list) \ |
126 | for ((x) = (list)->next; (x)->type != FRIBIDI_TYPE_SENTINEL; (x) = (x)->next) |
127 | |
128 | |
129 | #ifdef DEBUG |
130 | |
131 | void fribidi_validate_run_list ( |
132 | FriBidiRun *run_list /* input run list */ |
133 | ) FRIBIDI_GNUC_HIDDEN; |
134 | |
135 | #else /* !DEBUG */ |
136 | |
137 | #define fribidi_validate_run_list(run_list) fribidi_assert(run_list) |
138 | |
139 | #endif /* !DEBUG */ |
140 | |
141 | #include <fribidi-enddecls.h> |
142 | |
143 | #endif /* !_RUN_H */ |
144 | /* Editor directions: |
145 | * vim:textwidth=78:tabstop=8:shiftwidth=2:autoindent:cindent |
146 | */ |
147 | |