#include "strpool.h"

void init_strpool(strpool_t* pool) {
    lalloc_init(&pool->stralloc);
    
    pool->ht.hash_func = (u32_t(*)(const void*))rt_strhash;
    pool->ht.key_cmp = (int(*)(const void*, const void*))rt_strcmp;
    hashtable_init(&pool->ht);
}

const char* strpool_intern(strpool_t* pool, const char* str) {
    void* existing = hashtable_get(&pool->ht, str);
    if (existing) {
        return existing;
    }

    rt_size_t len = rt_strlen(str) + 1;
    char* new_str = lalloc_alloc(&pool->stralloc, len);
    if (!new_str) {
        LOG_ERROR("strpool: Failed to allocate memory for string");
        return NULL;
    }
    rt_memcpy(new_str, str, len);

    hashtable_set(&pool->ht, new_str, new_str);
    return new_str;
}

void strpool_destroy(strpool_t* pool) {
    hashtable_destory(&pool->ht);
    lalloc_destroy(&pool->stralloc);
}