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/*
* Created by Phil on 15/04/2013.
* Copyright 2013 Two Blue Cubes Ltd. All rights reserved.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef TWOBLUECUBES_CATCH_SFINAE_HPP_INCLUDED
#define TWOBLUECUBES_CATCH_SFINAE_HPP_INCLUDED
// Try to detect if the current compiler supports SFINAE
#include "catch_compiler_capabilities.h"
namespace Catch {
struct TrueType {
static const bool value = true;
typedef void Enable;
char sizer[1];
};
struct FalseType {
static const bool value = false;
typedef void Disable;
char sizer[2];
};
#ifdef CATCH_CONFIG_SFINAE
template<bool> struct NotABooleanExpression;
template<bool c> struct If : NotABooleanExpression<c> {};
template<> struct If<true> : TrueType {};
template<> struct If<false> : FalseType {};
template<int size> struct SizedIf;
template<> struct SizedIf<sizeof(TrueType)> : TrueType {};
template<> struct SizedIf<sizeof(FalseType)> : FalseType {};
#endif // CATCH_CONFIG_SFINAE
} // end namespace Catch
#endif // TWOBLUECUBES_CATCH_SFINAE_HPP_INCLUDED
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