zdoom-macos-deps/deps/wxwidgets/include/wx-3.1/wx/meta/pod.h
2021-06-28 10:54:57 +03:00

69 lines
1.9 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: wx/meta/pod.h
// Purpose: Test if a type is POD
// Author: Vaclav Slavik, Jaakko Salli
// Created: 2010-06-14
// Copyright: (c) wxWidgets team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_META_POD_H_
#define _WX_META_POD_H_
#include "wx/defs.h"
//
// TODO: Use TR1 is_pod<> implementation where available. VC9 SP1 has it
// in tr1 namespace, VC10 has it in std namespace. GCC 4.2 has it in
// <tr1/type_traits>, while GCC 4.3 and later have it in <type_traits>.
//
// Helper to decide if an object of type T is POD (Plain Old Data)
template<typename T>
struct wxIsPod
{
static const bool value = false;
};
// Macro to add wxIsPod<T> specialization for given type that marks it
// as Plain Old Data:
#define WX_DECLARE_TYPE_POD(type) \
template<> struct wxIsPod<type> \
{ \
static const bool value = true; \
};
WX_DECLARE_TYPE_POD(bool)
WX_DECLARE_TYPE_POD(unsigned char)
WX_DECLARE_TYPE_POD(signed char)
WX_DECLARE_TYPE_POD(unsigned int)
WX_DECLARE_TYPE_POD(signed int)
WX_DECLARE_TYPE_POD(unsigned short int)
WX_DECLARE_TYPE_POD(signed short int)
WX_DECLARE_TYPE_POD(signed long int)
WX_DECLARE_TYPE_POD(unsigned long int)
WX_DECLARE_TYPE_POD(float)
WX_DECLARE_TYPE_POD(double)
WX_DECLARE_TYPE_POD(long double)
#if wxWCHAR_T_IS_REAL_TYPE
WX_DECLARE_TYPE_POD(wchar_t)
#endif
#ifdef wxLongLong_t
WX_DECLARE_TYPE_POD(wxLongLong_t)
WX_DECLARE_TYPE_POD(wxULongLong_t)
#endif
// pointers are Plain Old Data:
template<typename T>
struct wxIsPod<T*>
{
static const bool value = true;
};
template<typename T>
struct wxIsPod<const T*>
{
static const bool value = true;
};
#endif // _WX_META_POD_H_