security/nss/lib/jar/jar-ds.h

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  36
  37 #ifndef __JAR_DS_h_
  38 #define __JAR_DS_h_
  39
  40 /* Typedefs */
  41 typedef struct ZZLinkStr ZZLink;
  42 typedef struct ZZListStr ZZList;
  43
  44 /*
  45 ** Circular linked list. Each link contains a pointer to the object that
  46 ** is actually in the list.
  47 */
  48 struct ZZLinkStr
  49 {
  50     ZZLink *next;
  51     ZZLink *prev;
  52     JAR_Item *thing;
  53 };
  54
  55 struct ZZListStr
  56 {
  57     ZZLink link;
  58 };
  59
  60 #define ZZ_InitList(lst)             \
  61 {                                    \
  62     (lst)->link.next = &(lst)->link; \
  63     (lst)->link.prev = &(lst)->link; \
  64     (lst)->link.thing = 0;           \
  65 }
  66
  67 #define ZZ_ListEmpty(lst) \
  68     ((lst)->link.next == &(lst)->link)
  69
  70 #define ZZ_ListHead(lst) \
  71     ((lst)->link.next)
  72
  73 #define ZZ_ListTail(lst) \
  74     ((lst)->link.prev)
  75
  76 #define ZZ_ListIterDone(lst,lnk) \
  77     ((lnk) == &(lst)->link)
  78
  79 #define ZZ_AppendLink(lst,lnk)      \
  80 {                                   \
  81     (lnk)->next = &(lst)->link;     \
  82     (lnk)->prev = (lst)->link.prev; \
  83     (lst)->link.prev->next = (lnk); \
  84     (lst)->link.prev = (lnk);       \
  85 }
  86
  87 #define ZZ_InsertLink(lst,lnk)      \
  88 {                                   \
  89     (lnk)->next = (lst)->link.next; \
  90     (lnk)->prev = &(lst)->link;     \
  91     (lst)->link.next->prev = (lnk); \
  92     (lst)->link.next = (lnk);       \
  93 }
  94
  95 #define ZZ_RemoveLink(lnk)           \
  96 {                                    \
  97     (lnk)->next->prev = (lnk)->prev; \
  98     (lnk)->prev->next = (lnk)->next; \
  99     (lnk)->next = 0;                 \
 100     (lnk)->prev = 0;                 \
 101 }
 102
 103 extern ZZLink *ZZ_NewLink (JAR_Item *thing);
 104 extern void ZZ_DestroyLink (ZZLink *link);
 105 extern ZZList *ZZ_NewList (void);
 106 extern void ZZ_DestroyList (ZZList *list);
 107
 108
 109 #endif /* __JAR_DS_h_ */