/**
 * Copyright (c) 2014 rxi
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MIT license. See LICENSE for details.
 */

#ifndef MAP_H
#define MAP_H

#include <string.h>

#ifdef __cplusplus  // handle C++
extern "C" {
#endif

#define MAP_VERSION "0.1.0"

struct map_node_t;
typedef struct map_node_t map_node_t;

typedef struct {
  map_node_t **buckets;
  unsigned     nbuckets, nnodes;
} map_base_t;

typedef struct {
  unsigned    bucketidx;
  map_node_t *node;
} map_iter_t;

#define map_t(T)     \
  struct {           \
    map_base_t base; \
    T *        ref;  \
    T          tmp;  \
  }

#define map_init(m) memset(m, 0, sizeof(*(m)))

#define map_deinit(m) map_deinit_(&(m)->base)

#ifdef __cplusplus  // handle C++
  #define map_get(m, key) \
    ((m)->ref = static_cast<decltype((m)->ref)>(map_get_(&(m)->base, key)))
#else
  #define map_get(m, key) ((m)->ref = map_get_(&(m)->base, key))
#endif

#define map_set(m, key, value) \
  ((m)->tmp = (value), map_set_(&(m)->base, key, &(m)->tmp, sizeof((m)->tmp)))

#define map_remove(m, key) map_remove_(&(m)->base, key)

#define map_iter(m) map_iter_()

#define map_next(m, iter) map_next_(&(m)->base, iter)

void        map_deinit_(map_base_t *m);
void *      map_get_(map_base_t *m, const char *key);
int         map_set_(map_base_t *m, const char *key, void *value, int vsize);
void        map_remove_(map_base_t *m, const char *key);
map_iter_t  map_iter_(void);
const char *map_next_(map_base_t *m, map_iter_t *iter);

typedef map_t(void *) map_void_t;
typedef map_t(char *) map_str_t;
typedef map_t(int) map_int_t;
typedef map_t(char) map_char_t;
typedef map_t(float) map_float_t;
typedef map_t(double) map_double_t;

#ifdef __cplusplus
}
#endif

#endif