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