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    SubjectRe: Generic list push/pop
    On Sun, Aug 18, 2002 at 09:21:41PM +0200, Daniel Phillips wrote:
    > I took a run at writing generic single-linked list push and pop macros, to be
    > used in the form:

    Dear gawd, I've gone blind.

    How's this look?


    Cheers,
    Bill


    struct slist
    {
    struct slist *next;
    };


    static inline void slist_add(struct slist *head, struct slist *elem)
    {
    elem->next = head->next;
    head->next = elem;
    }

    #define slist_push(head, elem) slist_add(head, elem)

    static inline struct slist *slist_pop(struct slist *head)
    {
    struct slist *elem = head->next;

    if (elem) {
    head->next = elem->next;
    elem->next = NULL;
    }
    return elem;
    }

    static inline int slist_remove(struct slist *head, struct slist *elem)
    {
    struct slist *curr, *prev;

    for (prev = head, curr = head->next; curr; prev = curr, curr = curr->next)
    if (curr == head) {
    prev->next = curr->next;
    curr->next = NULL;
    return 1;
    }

    return 0;
    }
    -
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