transfered from codeberg

source_code/external_code/hash_map/hashmap.h

@@ -0,0 +1,62 @@
+// Copyright 2020 Joshua J Baker. All rights reserved.
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+#ifndef HASHMAP_H
+#define HASHMAP_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif  // __cplusplus
+
+struct hashmap;
+
+struct hashmap *hashmap_new(size_t elsize, size_t cap, uint64_t seed0, 
+    uint64_t seed1, 
+    uint64_t (*hash)(const void *item, uint64_t seed0, uint64_t seed1),
+    int (*compare)(const void *a, const void *b, void *udata),
+    void (*elfree)(void *item),
+    void *udata);
+
+struct hashmap *hashmap_new_with_allocator(void *(*malloc)(size_t), 
+    void *(*realloc)(void *, size_t), void (*free)(void*), size_t elsize, 
+    size_t cap, uint64_t seed0, uint64_t seed1,
+    uint64_t (*hash)(const void *item, uint64_t seed0, uint64_t seed1),
+    int (*compare)(const void *a, const void *b, void *udata),
+    void (*elfree)(void *item),
+    void *udata);
+
+void hashmap_free(struct hashmap *map);
+void hashmap_clear(struct hashmap *map, bool update_cap);
+size_t hashmap_count(const struct hashmap *map);
+bool hashmap_oom(struct hashmap *map);
+const void *hashmap_get(const struct hashmap *map, const void *item);
+const void *hashmap_set(struct hashmap *map, const void *item);
+const void *hashmap_delete(struct hashmap *map, const void *item);
+const void *hashmap_probe(struct hashmap *map, uint64_t position);
+bool hashmap_scan(struct hashmap *map, bool (*iter)(const void *item, void *udata), void *udata);
+bool hashmap_iter(struct hashmap *map, size_t *i, void **item);
+
+uint64_t hashmap_sip(const void *data, size_t len, uint64_t seed0, uint64_t seed1);
+uint64_t hashmap_murmur(const void *data, size_t len, uint64_t seed0, uint64_t seed1);
+uint64_t hashmap_xxhash3(const void *data, size_t len, uint64_t seed0, uint64_t seed1);
+
+const void *hashmap_get_with_hash(const struct hashmap *map, const void *key, uint64_t hash);
+const void *hashmap_delete_with_hash(struct hashmap *map, const void *key, uint64_t hash);
+const void *hashmap_set_with_hash(struct hashmap *map, const void *item, uint64_t hash);
+void hashmap_set_grow_by_power(struct hashmap *map, size_t power);
+void hashmap_set_load_factor(struct hashmap *map, double load_factor);
+
+
+// DEPRECATED: use `hashmap_new_with_allocator`
+void hashmap_set_allocator(void *(*malloc)(size_t), void (*free)(void*));
+
+#if defined(__cplusplus)
+}
+#endif  // __cplusplus
+
+#endif  // HASHMAP_H