The Tor Browser / file comparison
comparison: js/src/jsclist.h
js/src/jsclist.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:32fcc370d0c9 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: set ts=8 sts=4 et sw=4 tw=99: | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef jsclist_h | |
| 8 #define jsclist_h | |
| 9 | |
| 10 #include "jstypes.h" | |
| 11 | |
| 12 /* | |
| 13 ** Circular linked list | |
| 14 */ | |
| 15 typedef struct JSCListStr { | |
| 16 struct JSCListStr *next; | |
| 17 struct JSCListStr *prev; | |
| 18 } JSCList; | |
| 19 | |
| 20 /* | |
| 21 ** Insert element "_e" into the list, before "_l". | |
| 22 */ | |
| 23 #define JS_INSERT_BEFORE(_e,_l) \ | |
| 24 JS_BEGIN_MACRO \ | |
| 25 (_e)->next = (_l); \ | |
| 26 (_e)->prev = (_l)->prev; \ | |
| 27 (_l)->prev->next = (_e); \ | |
| 28 (_l)->prev = (_e); \ | |
| 29 JS_END_MACRO | |
| 30 | |
| 31 /* | |
| 32 ** Insert element "_e" into the list, after "_l". | |
| 33 */ | |
| 34 #define JS_INSERT_AFTER(_e,_l) \ | |
| 35 JS_BEGIN_MACRO \ | |
| 36 (_e)->next = (_l)->next; \ | |
| 37 (_e)->prev = (_l); \ | |
| 38 (_l)->next->prev = (_e); \ | |
| 39 (_l)->next = (_e); \ | |
| 40 JS_END_MACRO | |
| 41 | |
| 42 /* | |
| 43 ** Return the element following element "_e" | |
| 44 */ | |
| 45 #define JS_NEXT_LINK(_e) \ | |
| 46 ((_e)->next) | |
| 47 /* | |
| 48 ** Return the element preceding element "_e" | |
| 49 */ | |
| 50 #define JS_PREV_LINK(_e) \ | |
| 51 ((_e)->prev) | |
| 52 | |
| 53 /* | |
| 54 ** Append an element "_e" to the end of the list "_l" | |
| 55 */ | |
| 56 #define JS_APPEND_LINK(_e,_l) JS_INSERT_BEFORE(_e,_l) | |
| 57 | |
| 58 /* | |
| 59 ** Insert an element "_e" at the head of the list "_l" | |
| 60 */ | |
| 61 #define JS_INSERT_LINK(_e,_l) JS_INSERT_AFTER(_e,_l) | |
| 62 | |
| 63 /* Return the head/tail of the list */ | |
| 64 #define JS_LIST_HEAD(_l) (_l)->next | |
| 65 #define JS_LIST_TAIL(_l) (_l)->prev | |
| 66 | |
| 67 /* | |
| 68 ** Remove the element "_e" from it's circular list. | |
| 69 */ | |
| 70 #define JS_REMOVE_LINK(_e) \ | |
| 71 JS_BEGIN_MACRO \ | |
| 72 (_e)->prev->next = (_e)->next; \ | |
| 73 (_e)->next->prev = (_e)->prev; \ | |
| 74 JS_END_MACRO | |
| 75 | |
| 76 /* | |
| 77 ** Remove the element "_e" from it's circular list. Also initializes the | |
| 78 ** linkage. | |
| 79 */ | |
| 80 #define JS_REMOVE_AND_INIT_LINK(_e) \ | |
| 81 JS_BEGIN_MACRO \ | |
| 82 (_e)->prev->next = (_e)->next; \ | |
| 83 (_e)->next->prev = (_e)->prev; \ | |
| 84 (_e)->next = (_e); \ | |
| 85 (_e)->prev = (_e); \ | |
| 86 JS_END_MACRO | |
| 87 | |
| 88 /* | |
| 89 ** Return non-zero if the given circular list "_l" is empty, zero if the | |
| 90 ** circular list is not empty | |
| 91 */ | |
| 92 #define JS_CLIST_IS_EMPTY(_l) \ | |
| 93 ((_l)->next == (_l)) | |
| 94 | |
| 95 /* | |
| 96 ** Initialize a circular list | |
| 97 */ | |
| 98 #define JS_INIT_CLIST(_l) \ | |
| 99 JS_BEGIN_MACRO \ | |
| 100 (_l)->next = (_l); \ | |
| 101 (_l)->prev = (_l); \ | |
| 102 JS_END_MACRO | |
| 103 | |
| 104 #define JS_INIT_STATIC_CLIST(_l) \ | |
| 105 {(_l), (_l)} | |
| 106 | |
| 107 #endif /* jsclist_h */ |
