scopeguard.hpp

来自「经典的string 函数库学习资料」· HPP 代码 · 共 29 行

/**
 * @file ScopeGuard.hpp
 * @brief ScopeGuard，泥偶做的一些改动，在namespace中声明
 * @author 泥偶
 * @since  2003-10-15
 * @date   2003-10-18
 * @note  这个是从 http://www.c-view.org/journal/005/gp_aa.htm 弄来的好东东
 */

#ifndef SCOPEGUARD_HPP
#define SCOPEGUARD_HPP

namespace x
{
    #include "ScopeGuard.h"

    #ifdef __GNUC__
    // 重新定义ON_BLOCK_EXIT和ON_BLOCK_EXIT_OBJ，避免编译器抱怨unused variable
    #undef ON_BLOCK_EXIT
    #define ON_BLOCK_EXIT ScopeGuard __attribute__ ((__unused__)) \
        ANONYMOUS_VARIABLE(scopeGuard) = MakeGuard
    #undef ON_BLOCK_EXIT_OBJ
    #define ON_BLOCK_EXIT_OBJ ScopeGuard __attribute__ ((__unused__)) \
        ANONYMOUS_VARIABLE(scopeGuard) = MakeObjGuard
    #endif  // __GNUC__
}   // namespace x

#endif  // ifndef SCOPEGUARD_HPP