wxWidgets/include/wx/meta/if.h
Vadim Zeitlin f4b80e5337 Remove MSVC6 support.
Don't support this compiler any more, this allows to get rid of tons of
MSVC6-specific workarounds, in particular we can now use Bind() and natural
template functions calls in the library code.

Also remove MSVC6 project and solution files and don't generate them when
bakefile_gen is ran any more (removing the remaining occurrences of msvc6prj
from the bakefiles results in weird bake-time errors, so it's simpler to just
leave them there).

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76532 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2014-05-15 22:32:17 +00:00

57 lines
1.3 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: wx/meta/if.h
// Purpose: declares wxIf<> metaprogramming construct
// Author: Vaclav Slavik
// Created: 2008-01-22
// Copyright: (c) 2008 Vaclav Slavik
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_META_IF_H_
#define _WX_META_IF_H_
#include "wx/defs.h"
namespace wxPrivate
{
template <bool Cond>
struct wxIfImpl;
// specialization for true:
template <>
struct wxIfImpl<true>
{
template<typename TTrue, typename TFalse> struct Result
{
typedef TTrue value;
};
};
// specialization for false:
template<>
struct wxIfImpl<false>
{
template<typename TTrue, typename TFalse> struct Result
{
typedef TFalse value;
};
};
} // namespace wxPrivate
// wxIf<> template defines nested type "value" which is the same as
// TTrue if the condition Cond (boolean compile-time constant) was met and
// TFalse if it wasn't.
//
// See wxVector<T> in vector.h for usage example
template<bool Cond, typename TTrue, typename TFalse>
struct wxIf
{
typedef typename wxPrivate::wxIfImpl<Cond>
::template Result<TTrue, TFalse>::value
value;
};
#endif // _WX_META_IF_H_