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scc/runtime/libutils/include/strpool.h
2025-11-20 11:22:37 +08:00

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/**
* @file strpool.h
* @brief 字符串池实现
*
* 提供字符串驻留String Interning功能保证相同字符串的唯一性存储
*/
#ifndef __SMCC_STRPOOL_H__
#define __SMCC_STRPOOL_H__
#include <libcore.h>
#include "hashtable.h"
#include "string.h"
/**
* @struct strpool_t
* @brief 字符串池上下文
*
* 组合哈希表和专用内存分配器实现的高效字符串存储池
*/
typedef struct strpool {
hash_table_t ht; /**< 哈希表用于快速查找已存储字符串 */
} strpool_t;
/**
* @brief 初始化字符串池
* @param pool 字符串池实例指针
*/
void init_strpool(strpool_t* pool);
/**
* @brief 驻留字符串到池中
* @param pool 字符串池实例指针
* @param str 要驻留的 C 字符串
* @return 池中唯一字符串的持久指针
*
* @note 返回值生命周期与字符串池一致
* @note 重复插入相同字符串会返回已有指针
*/
const char* strpool_intern(strpool_t* pool, const char* str);
/**
* @brief 销毁字符串池
* @param pool 字符串池实例指针
*
* @warning 销毁后已获取的字符串指针将失效
* @note 会自动释放所有驻留字符串内存
*/
void strpool_destroy(strpool_t* pool);
#endif // __SMCC_STRPOOL_H__