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

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 * 1.1 (the "License"); you may not use this file except in compliance with
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 * The Original Code is the Netscape security libraries.
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#ifndef __JAR_DS_h_
#define __JAR_DS_h_

/* Typedefs */
typedef struct ZZLinkStr ZZLink;
typedef struct ZZListStr ZZList;

/*
** Circular linked list. Each link contains a pointer to the object that
** is actually in the list.
*/ 
struct ZZLinkStr 
{
    ZZLink *next;
    ZZLink *prev;
    JAR_Item *thing;
};

struct ZZListStr 
{
    ZZLink link;
};

#define ZZ_InitList(lst)	     \
{				     \
    (lst)->link.next = &(lst)->link; \
    (lst)->link.prev = &(lst)->link; \
    (lst)->link.thing = 0;	     \
}

#define ZZ_ListEmpty(lst) \
    ((lst)->link.next == &(lst)->link)

#define ZZ_ListHead(lst) \
    ((lst)->link.next)

#define ZZ_ListTail(lst) \
    ((lst)->link.prev)

#define ZZ_ListIterDone(lst,lnk) \
    ((lnk) == &(lst)->link)

#define ZZ_AppendLink(lst,lnk)	    \
{				    \
    (lnk)->next = &(lst)->link;	    \
    (lnk)->prev = (lst)->link.prev; \
    (lst)->link.prev->next = (lnk); \
    (lst)->link.prev = (lnk);	    \
}

#define ZZ_InsertLink(lst,lnk)	    \
{				    \
    (lnk)->next = (lst)->link.next; \
    (lnk)->prev = &(lst)->link;	    \
    (lst)->link.next->prev = (lnk); \
    (lst)->link.next = (lnk);	    \
}

#define ZZ_RemoveLink(lnk)	     \
{				     \
    (lnk)->next->prev = (lnk)->prev; \
    (lnk)->prev->next = (lnk)->next; \
    (lnk)->next = 0;		     \
    (lnk)->prev = 0;		     \
}

extern ZZLink *ZZ_NewLink (JAR_Item *thing);
extern void ZZ_DestroyLink (ZZLink *link);
extern ZZList *ZZ_NewList (void);
extern void ZZ_DestroyList (ZZList *list);


#endif /* __JAR_DS_h_ */