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/*
* Copyright (C) 2009-2011 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_hashtable_h__
#define INCLUDE_hashtable_h__
#include "git2/common.h"
#include "git2/oid.h"
#include "git2/odb.h"
#include "common.h"
#define GIT_HASHTABLE_HASHES 3
typedef uint32_t (*git_hash_ptr)(const void *, int hash_id);
typedef int (*git_hash_keyeq_ptr)(const void *key_a, const void *key_b);
struct git_hashtable_node {
const void *key;
void *value;
};
struct git_hashtable {
struct git_hashtable_node *nodes;
size_t size_mask;
size_t size;
size_t key_count;
int is_resizing;
git_hash_ptr hash;
git_hash_keyeq_ptr key_equal;
};
typedef struct git_hashtable_node git_hashtable_node;
typedef struct git_hashtable git_hashtable;
git_hashtable *git_hashtable_alloc(size_t min_size,
git_hash_ptr hash,
git_hash_keyeq_ptr key_eq);
void *git_hashtable_lookup(git_hashtable *h, const void *key);
int git_hashtable_remove(git_hashtable *table, const void *key);
void git_hashtable_free(git_hashtable *h);
void git_hashtable_clear(git_hashtable *h);
int git_hashtable_merge(git_hashtable *self, git_hashtable *other);
int git_hashtable_insert2(git_hashtable *h, const void *key, void *value, void **old_value);
GIT_INLINE(int) git_hashtable_insert(git_hashtable *h, const void *key, void *value)
{
void *_unused;
return git_hashtable_insert2(h, key, value, &_unused);
}
#define git_hashtable_node_at(nodes, pos) ((git_hashtable_node *)(&nodes[pos]))
#define GIT_HASHTABLE_FOREACH(self, pkey, pvalue, code) {\
git_hashtable *_self = (self);\
git_hashtable_node *_nodes = _self->nodes;\
unsigned int _i, _size = _self->size;\
for (_i = 0; _i < _size; _i ++) {\
git_hashtable_node *_node = git_hashtable_node_at(_nodes, _i);\
if (_node->key)\
{\
pkey = _node->key;\
pvalue = _node->value;\
code;\
}\
}\
}
#define GIT_HASHTABLE_FOREACH_DELETE() {\
_node->key = NULL; _node->value = NULL; _self->key_count--;\
}
/*
* If you want a hashtable with standard string keys, you can
* just pass git_hash__strcmp_cb and git_hash__strhash_cb to
* git_hashtable_alloc.
*/
#define git_hash__strcmp_cb git__strcmp_cb
extern uint32_t git_hash__strhash_cb(const void *key, int hash_id);
#endif
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