pm_constant_pool.h

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#ifndef PRISM_CONSTANT_POOL_H
#define PRISM_CONSTANT_POOL_H
 
#include "prism/defines.h"
#include "prism/util/pm_arena.h"
 
#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
 
#define PM_CONSTANT_ID_UNSET 0
 
typedef uint32_t pm_constant_id_t;
 
typedef struct {
    size_t size;
 
    size_t capacity;
 
    pm_constant_id_t *ids;
} pm_constant_id_list_t;
 
void pm_constant_id_list_init(pm_constant_id_list_t *list);
 
void pm_constant_id_list_init_capacity(pm_arena_t *arena, pm_constant_id_list_t *list, size_t capacity);
 
void pm_constant_id_list_append(pm_arena_t *arena, pm_constant_id_list_t *list, pm_constant_id_t id);
 
void pm_constant_id_list_insert(pm_constant_id_list_t *list, size_t index, pm_constant_id_t id);
 
bool pm_constant_id_list_includes(pm_constant_id_list_t *list, pm_constant_id_t id);
 
typedef unsigned int pm_constant_pool_bucket_type_t;
 
static const pm_constant_pool_bucket_type_t PM_CONSTANT_POOL_BUCKET_DEFAULT = 0;
 
static const pm_constant_pool_bucket_type_t PM_CONSTANT_POOL_BUCKET_OWNED = 1;
 
static const pm_constant_pool_bucket_type_t PM_CONSTANT_POOL_BUCKET_CONSTANT = 2;
 
typedef struct {
    unsigned int id: 30;
 
    pm_constant_pool_bucket_type_t type: 2;
 
    uint32_t hash;
} pm_constant_pool_bucket_t;
 
typedef struct {
    const uint8_t *start;
 
    size_t length;
} pm_constant_t;
 
typedef struct {
    pm_constant_pool_bucket_t *buckets;
 
    pm_constant_t *constants;
 
    uint32_t size;
 
    uint32_t capacity;
} pm_constant_pool_t;
 
bool pm_constant_pool_init(pm_constant_pool_t *pool, uint32_t capacity);
 
pm_constant_t * pm_constant_pool_id_to_constant(const pm_constant_pool_t *pool, pm_constant_id_t constant_id);
 
pm_constant_id_t pm_constant_pool_find(const pm_constant_pool_t *pool, const uint8_t *start, size_t length);
 
pm_constant_id_t pm_constant_pool_insert_shared(pm_constant_pool_t *pool, const uint8_t *start, size_t length);
 
pm_constant_id_t pm_constant_pool_insert_owned(pm_constant_pool_t *pool, uint8_t *start, size_t length);
 
pm_constant_id_t pm_constant_pool_insert_constant(pm_constant_pool_t *pool, const uint8_t *start, size_t length);
 
void pm_constant_pool_free(pm_constant_pool_t *pool);
 
#endif