dlist.h@df17024f1107 (annotated)
dlist.h
Wed, 10 Mar 2004 18:31:01 +0100
- author
- tuomov
- date
- Wed, 10 Mar 2004 18:31:01 +0100
- changeset 69
- df17024f1107
- parent 62
- aae5facf9fc5
- child 87
- 95553f8ea540
- permissions
- -rw-r--r--
trunk: changeset 1374
Added include checks to rb header.
| 58 | 1 | /* |
| 2 | * libtu/common.h | |
| 3 | * | |
| 4 | * Copyright (c) Tuomo Valkonen 1999-2002. | |
| 5 | * | |
| 6 | * You may distribute and modify this library under the terms of either | |
| 7 | * the Clarified Artistic License or the GNU LGPL, version 2.1 or later. | |
| 8 | */ | |
| 9 | ||
| 10 | #ifndef LIBTU_DLIST_H | |
| 11 | #define LIBTU_DLIST_H | |
| 12 | ||
| 13 | #define LINK_ITEM(LIST, ITEM, NEXT, PREV) \ | |
| 62 | 14 | (ITEM)->NEXT=NULL; \ |
| 15 | if((LIST)==NULL){ \ | |
| 16 | (LIST)=(ITEM); \ | |
| 17 | (ITEM)->PREV=(ITEM); \ | |
| 18 | }else{ \ | |
| 19 | (ITEM)->PREV=(LIST)->PREV; \ | |
| 20 | (ITEM)->PREV->NEXT=(ITEM); \ | |
| 21 | (LIST)->PREV=(ITEM); \ | |
| 22 | } | |
| 58 | 23 | |
| 24 | ||
| 25 | #define LINK_ITEM_FIRST(LIST, ITEM, NEXT, PREV) \ | |
| 62 | 26 | (ITEM)->NEXT=(LIST); \ |
| 27 | if((LIST)==NULL){ \ | |
| 28 | (ITEM)->PREV=(ITEM); \ | |
| 29 | }else{ \ | |
| 30 | (ITEM)->PREV=(LIST)->PREV; \ | |
| 31 | (LIST)->PREV=(ITEM); \ | |
| 32 | } \ | |
| 33 | (LIST)=(ITEM); | |
| 58 | 34 | |
| 35 | ||
| 36 | #define LINK_ITEM_LIST LINK_ITEM | |
| 37 | ||
| 38 | ||
| 39 | #define LINK_ITEM_BEFORE(LIST, BEFORE, ITEM, NEXT, PREV) \ | |
| 62 | 40 | (ITEM)->NEXT=(BEFORE); \ |
| 41 | (ITEM)->PREV=(BEFORE)->PREV; \ | |
| 42 | (BEFORE)->PREV=(ITEM); \ | |
| 43 | if((BEFORE)==(LIST)) \ | |
| 44 | (LIST)=(ITEM); \ | |
| 45 | else \ | |
| 46 | (ITEM)->PREV->NEXT=(ITEM) | |
| 58 | 47 | |
| 48 | ||
| 49 | #define LINK_ITEM_AFTER(LIST, AFTER, ITEM, NEXT, PREV) \ | |
| 62 | 50 | (ITEM)->NEXT=(AFTER)->NEXT; \ |
| 51 | (ITEM)->PREV=(AFTER); \ | |
| 52 | (AFTER)->NEXT=(ITEM); \ | |
| 53 | if((ITEM)->NEXT==NULL) \ | |
| 54 | (LIST)->PREV=(ITEM); \ | |
| 55 | else \ | |
| 56 | (ITEM)->NEXT->PREV=ITEM; | |
| 58 | 57 | |
| 58 | ||
| 59 | #define UNLINK_ITEM(LIST, ITEM, NEXT, PREV) \ | |
| 62 | 60 | if((ITEM)->PREV!=NULL){ \ |
| 61 | if((ITEM)==(LIST)){ \ | |
| 62 | (LIST)=(ITEM)->NEXT; \ | |
| 63 | if((LIST)!=NULL) \ | |
| 64 | (LIST)->PREV=(ITEM)->PREV; \ | |
| 65 | }else if((ITEM)->NEXT==NULL){ \ | |
| 66 | (ITEM)->PREV->NEXT=NULL; \ | |
| 67 | (LIST)->PREV=(ITEM)->PREV; \ | |
| 68 | }else{ \ | |
| 69 | (ITEM)->PREV->NEXT=(ITEM)->NEXT; \ | |
| 70 | (ITEM)->NEXT->PREV=(ITEM)->PREV; \ | |
| 71 | } \ | |
| 72 | } \ | |
| 73 | (ITEM)->NEXT=NULL; \ | |
| 74 | (ITEM)->PREV=NULL; | |
| 58 | 75 | |
| 76 | #endif /* LIBTU_DLIST_H */ |
