3f66f6a5b3
This keyword is not expanded by Git which means it's not replaced with the correct revision value in the releases made using git-based scripts and it's confusing to have lines with unexpanded "$Id$" in the released files. As expanding them with Git is not that simple (it could be done with git archive and export-subst attribute) and there are not many benefits in having them in the first place, just remove all these lines. If nothing else, this will make an eventual transition to Git simpler. Closes #14487. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/meta/pod.h
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// Purpose: Test if a type is POD
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// Author: Vaclav Slavik, Jaakko Salli
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// Created: 2010-06-14
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// Copyright: (c) wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_META_POD_H_
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#define _WX_META_POD_H_
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#include "wx/defs.h"
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//
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// TODO: Use TR1 is_pod<> implementation where available. VC9 SP1 has it
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// in tr1 namespace, VC10 has it in std namespace. GCC 4.2 has it in
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// <tr1/type_traits>, while GCC 4.3 and later have it in <type_traits>.
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//
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// This macro declares something called "value" inside a class declaration.
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//
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// It has to be used because VC6 doesn't handle initialization of the static
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// variables in the class declaration itself while BCC5.82 doesn't understand
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// enums (it compiles the template fine but can't use it later)
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#if defined(__VISUALC__) && !wxCHECK_VISUALC_VERSION(7)
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#define wxDEFINE_TEMPLATE_BOOL_VALUE(val) enum { value = val }
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#else
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#define wxDEFINE_TEMPLATE_BOOL_VALUE(val) static const bool value = val
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#endif
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// Helper to decide if an object of type T is POD (Plain Old Data)
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template<typename T>
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struct wxIsPod
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{
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wxDEFINE_TEMPLATE_BOOL_VALUE(false);
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};
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// Macro to add wxIsPod<T> specialization for given type that marks it
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// as Plain Old Data:
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#define WX_DECLARE_TYPE_POD(type) \
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template<> struct wxIsPod<type> \
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{ \
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wxDEFINE_TEMPLATE_BOOL_VALUE(true); \
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};
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WX_DECLARE_TYPE_POD(bool)
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WX_DECLARE_TYPE_POD(unsigned char)
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WX_DECLARE_TYPE_POD(signed char)
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WX_DECLARE_TYPE_POD(unsigned int)
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WX_DECLARE_TYPE_POD(signed int)
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WX_DECLARE_TYPE_POD(unsigned short int)
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WX_DECLARE_TYPE_POD(signed short int)
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WX_DECLARE_TYPE_POD(signed long int)
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WX_DECLARE_TYPE_POD(unsigned long int)
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WX_DECLARE_TYPE_POD(float)
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WX_DECLARE_TYPE_POD(double)
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WX_DECLARE_TYPE_POD(long double)
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#if wxWCHAR_T_IS_REAL_TYPE
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WX_DECLARE_TYPE_POD(wchar_t)
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#endif
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#ifdef wxLongLong_t
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WX_DECLARE_TYPE_POD(wxLongLong_t)
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WX_DECLARE_TYPE_POD(wxULongLong_t)
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#endif
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// Visual C++ 6.0 can't compile partial template specializations and as this is
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// only an optimization, we can live with pointers not being recognized as
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// POD types under VC6
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#if !defined(__VISUALC__) || wxCHECK_VISUALC_VERSION(7)
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// pointers are Plain Old Data:
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template<typename T>
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struct wxIsPod<T*>
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{
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static const bool value = true;
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};
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template<typename T>
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struct wxIsPod<const T*>
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{
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static const bool value = true;
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};
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#endif // !VC++ < 7
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#endif // _WX_META_POD_H_
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