scope_guard.h

 
#ifndef _aspose_system_scope_guard_h_
#define _aspose_system_scope_guard_h_
 
#include <exception>
 
namespace System
{
 
template <typename F>
struct ScopeGuard
{
    ScopeGuard(F f) : f(f)
    {}
#if defined(_MSC_VER)
#pragma warning(push)
// Warning C4722: destructor never returns, potential memory leak.
#pragma warning(disable : 4722)
#endif
    ~ScopeGuard() noexcept(false)
    {
#ifdef __cpp_lib_uncaught_exceptions
        if (std::uncaught_exceptions() > 0)
#else
        if (std::uncaught_exception()) // Deprecated since C++ 17
#endif
        {
            // "finally" during exception (unwinding stack)
            // need prevent double exception and process termination
            try
            {
                f();
            }
            catch (...)
            {
            }
        }
        else
        {
            f();
        }
    }
#if defined(_MSC_VER)
#pragma warning(pop)
#endif
private:
    F f;
};
 
// auto guard = MakeScopeGuard([&](){
//     .....
// });
template <typename F>
ScopeGuard<F> MakeScopeGuard(F f)
{
    return ScopeGuard<F>(f);
};
 
} // namespace System
#endif // _aspose_system_scope_guard_h_