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40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
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/*-*- Mode: C; c-basic-offset: 8 -*-*/
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#ifndef foosethfoo
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#define foosethfoo
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/* Pretty straightforward set implementation. Internally based on the
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* hashmap. That means that as a minor optimization a NULL set
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* object will be treated as empty set for all read
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* operations. That way it is not necessary to instantiate an object
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* for each set use. */
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#include "hashmap.h"
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typedef struct Set Set;
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Set *set_new(hash_func_t hash_func, compare_func_t compare_func);
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void set_free(Set* set);
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int set_put(Set *s, void *value);
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void *set_get(Set *s, void *value);
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void *set_remove(Set *s, void *value);
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unsigned set_size(Set *s);
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bool set_isempty(Set *s);
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void *set_iterate(Set *h, void **state);
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void *set_iterate_backwards(Set *h, void **state);
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void *set_steal_first(Set *h);
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void* set_first(Set *h);
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void* set_last(Set *h);
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#define SET_FOREACH(e, s, state) \
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for ((state) = NULL, (e) = set_iterate((s), &(state)); (e); (e) = set_iterate((s), &(state)))
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#define SET_FOREACH_BACKWARDS(e, s, state) \
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for ((state) = NULL, (e) = set_iterate_backwards((s), &(state)); (e); (e) = set_iterate_backwards((s), &(state)))
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#endif
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