/* Abstract ordered set data type.
- Copyright (C) 2006 Free Software Foundation, Inc.
+ Copyright (C) 2006-2007 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2006.
This program is free software; you can redistribute it and/or modify
NULL denotes pointer comparison. */
typedef int (*gl_setelement_compar_fn) (const void *elt1, const void *elt2);
+/* Type of function used to dispose an element once it's removed from a set.
+ NULL denotes a no-op. */
+typedef void (*gl_setelement_dispose_fn) (const void *elt);
+
/* Type of function used to compare an element with a threshold.
Return true if the element is greater or equal than the threshold. */
typedef bool (*gl_setelement_threshold_fn) (const void *elt, const void *threshold);
/* Create an empty set.
IMPLEMENTATION is one of GL_ARRAY_OSET, GL_AVLTREE_OSET, GL_RBTREE_OSET.
- COMPAR_FN is an element comparison function or NULL. */
+ COMPAR_FN is an element comparison function or NULL.
+ DISPOSE_FN is an element disposal function or NULL. */
extern gl_oset_t gl_oset_create_empty (gl_oset_implementation_t implementation,
- gl_setelement_compar_fn compar_fn);
+ gl_setelement_compar_fn compar_fn,
+ gl_setelement_dispose_fn dispose_fn);
/* Return the current number of elements in an ordered set. */
extern size_t gl_oset_size (gl_oset_t set);
{
/* gl_oset_t functions. */
gl_oset_t (*create_empty) (gl_oset_implementation_t implementation,
- gl_setelement_compar_fn compar_fn);
+ gl_setelement_compar_fn compar_fn,
+ gl_setelement_dispose_fn dispose_fn);
size_t (*size) (gl_oset_t set);
bool (*search) (gl_oset_t set, const void *elt);
bool (*search_atleast) (gl_oset_t set,
{
const struct gl_oset_implementation *vtable;
gl_setelement_compar_fn compar_fn;
+ gl_setelement_dispose_fn dispose_fn;
};
#if HAVE_INLINE
# define gl_oset_create_empty gl_oset_create_empty_inline
static inline gl_oset_t
gl_oset_create_empty (gl_oset_implementation_t implementation,
- gl_setelement_compar_fn compar_fn)
+ gl_setelement_compar_fn compar_fn,
+ gl_setelement_dispose_fn dispose_fn)
{
- return implementation->create_empty (implementation, compar_fn);
+ return implementation->create_empty (implementation, compar_fn, dispose_fn);
}
# define gl_oset_size gl_oset_size_inline