comparison: symlist.c
symlist.c
- changeset 60
- a4033700e35c
- child 62
- aae5facf9fc5
equal
deleted
inserted
replaced
| 59:d8ecbeda7683 | 60:a4033700e35c |
|---|---|
| 1 /* | |
| 2 * libtu/symlist.c | |
| 3 * | |
| 4 * Copyright (c) Tuomo Valkonen 1999-2004. | |
| 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 #include "obj.h" | |
| 11 #include "symlist.h" | |
| 12 #include "types.h" | |
| 13 #include "dlist.h" | |
| 14 #include "misc.h" | |
| 15 | |
| 16 | |
| 17 static void free_node(Symlist **symlist, Symlist *node) | |
| 18 { | |
| 19 UNLINK_ITEM(*symlist, node, next, prev); | |
| 20 free(node); | |
| 21 } | |
| 22 | |
| 23 | |
| 24 bool symlist_insert(Symlist **symlist, void *symbol) | |
| 25 { | |
| 26 Symlist *node; | |
| 27 | |
| 28 if(symbol==NULL) | |
| 29 return FALSE; | |
| 30 | |
| 31 node=ALLOC(Symlist); | |
| 32 | |
| 33 if(node==NULL) | |
| 34 return FALSE; | |
| 35 | |
| 36 node->symbol=symbol; | |
| 37 | |
| 38 LINK_ITEM_FIRST(*symlist, node, next, prev); | |
| 39 | |
| 40 return TRUE; | |
| 41 } | |
| 42 | |
| 43 | |
| 44 void symlist_remove(Symlist **symlist, void *symbol) | |
| 45 { | |
| 46 Symlist *node=*symlist; | |
| 47 | |
| 48 while(node!=NULL){ | |
| 49 if(node->symbol==symbol){ | |
| 50 free_node(symlist, node); | |
| 51 return; | |
| 52 } | |
| 53 node=node->next; | |
| 54 } | |
| 55 } | |
| 56 | |
| 57 | |
| 58 void symlist_clear(Symlist **symlist) | |
| 59 { | |
| 60 while(*symlist!=NULL) | |
| 61 free_node(symlist, *symlist); | |
| 62 } | |
| 63 | |
| 64 | |
| 65 /* Warning: not thread-safe */ | |
| 66 | |
| 67 | |
| 68 static Symlist *iter_next=NULL; | |
| 69 | |
| 70 | |
| 71 void *symlist_init_iter(Symlist *symlist) | |
| 72 { | |
| 73 if(symlist==NULL){ | |
| 74 iter_next=NULL; | |
| 75 return NULL; | |
| 76 } | |
| 77 | |
| 78 iter_next=symlist->next; | |
| 79 return symlist->symbol; | |
| 80 } | |
| 81 | |
| 82 | |
| 83 void *symlist_iter() | |
| 84 { | |
| 85 Symlist *ret; | |
| 86 | |
| 87 if(iter_next==NULL) | |
| 88 return NULL; | |
| 89 | |
| 90 ret=iter_next; | |
| 91 iter_next=iter_next->next; | |
| 92 | |
| 93 return ret->symbol; | |
| 94 } | |
| 95 |
