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/*
* Created by Phil on 04/03/2011.
* Copyright 2011 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_EVALUATE_HPP_INCLUDED
#define TWOBLUECUBES_CATCH_EVALUATE_HPP_INCLUDED
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable:4389) // '==' : signed/unsigned mismatch
#pragma warning(disable:4018) // more "signed/unsigned mismatch"
#pragma warning(disable:4312) // Converting int to T* using reinterpret_cast (issue on x64 platform)
#endif
#include <cstddef>
namespace Catch {
namespace Internal {
enum Operator {
IsEqualTo,
IsNotEqualTo,
IsLessThan,
IsGreaterThan,
IsLessThanOrEqualTo,
IsGreaterThanOrEqualTo
};
template<Operator Op> struct OperatorTraits { static const char* getName(){ return "*error*"; } };
template<> struct OperatorTraits<IsEqualTo> { static const char* getName(){ return "=="; } };
template<> struct OperatorTraits<IsNotEqualTo> { static const char* getName(){ return "!="; } };
template<> struct OperatorTraits<IsLessThan> { static const char* getName(){ return "<"; } };
template<> struct OperatorTraits<IsGreaterThan> { static const char* getName(){ return ">"; } };
template<> struct OperatorTraits<IsLessThanOrEqualTo> { static const char* getName(){ return "<="; } };
template<> struct OperatorTraits<IsGreaterThanOrEqualTo>{ static const char* getName(){ return ">="; } };
template<typename T>
T& removeConst(T const &t) { return const_cast<T&>(t); }
#ifdef CATCH_CONFIG_CPP11_NULLPTR
inline std::nullptr_t removeConst(std::nullptr_t) { return nullptr; }
#endif
// So the compare overloads can be operator agnostic we convey the operator as a template
// enum, which is used to specialise an Evaluator for doing the comparison.
template<typename T1, typename T2, Operator Op>
struct Evaluator{};
template<typename T1, typename T2>
struct Evaluator<T1, T2, IsEqualTo> {
static bool evaluate( T1 const& lhs, T2 const& rhs) {
return bool(removeConst(lhs) == removeConst(rhs) );
}
};
template<typename T1, typename T2>
struct Evaluator<T1, T2, IsNotEqualTo> {
static bool evaluate( T1 const& lhs, T2 const& rhs ) {
return bool(removeConst(lhs) != removeConst(rhs) );
}
};
template<typename T1, typename T2>
struct Evaluator<T1, T2, IsLessThan> {
static bool evaluate( T1 const& lhs, T2 const& rhs ) {
return bool(removeConst(lhs) < removeConst(rhs) );
}
};
template<typename T1, typename T2>
struct Evaluator<T1, T2, IsGreaterThan> {
static bool evaluate( T1 const& lhs, T2 const& rhs ) {
return bool(removeConst(lhs) > removeConst(rhs) );
}
};
template<typename T1, typename T2>
struct Evaluator<T1, T2, IsGreaterThanOrEqualTo> {
static bool evaluate( T1 const& lhs, T2 const& rhs ) {
return bool(removeConst(lhs) >= removeConst(rhs) );
}
};
template<typename T1, typename T2>
struct Evaluator<T1, T2, IsLessThanOrEqualTo> {
static bool evaluate( T1 const& lhs, T2 const& rhs ) {
return bool(removeConst(lhs) <= removeConst(rhs) );
}
};
// Special case for comparing a pointer to an int (deduced for p==0)
template<typename T>
struct Evaluator<int const&, T* const&, IsEqualTo> {
static bool evaluate( int lhs, T* rhs) {
return reinterpret_cast<void const*>( lhs ) == rhs;
}
};
template<typename T>
struct Evaluator<T* const&, int const&, IsEqualTo> {
static bool evaluate( T* lhs, int rhs) {
return lhs == reinterpret_cast<void const*>( rhs );
}
};
template<typename T>
struct Evaluator<int const&, T* const&, IsNotEqualTo> {
static bool evaluate( int lhs, T* rhs) {
return reinterpret_cast<void const*>( lhs ) != rhs;
}
};
template<typename T>
struct Evaluator<T* const&, int const&, IsNotEqualTo> {
static bool evaluate( T* lhs, int rhs) {
return lhs != reinterpret_cast<void const*>( rhs );
}
};
template<typename T>
struct Evaluator<long const&, T* const&, IsEqualTo> {
static bool evaluate( long lhs, T* rhs) {
return reinterpret_cast<void const*>( lhs ) == rhs;
}
};
template<typename T>
struct Evaluator<T* const&, long const&, IsEqualTo> {
static bool evaluate( T* lhs, long rhs) {
return lhs == reinterpret_cast<void const*>( rhs );
}
};
template<typename T>
struct Evaluator<long const&, T* const&, IsNotEqualTo> {
static bool evaluate( long lhs, T* rhs) {
return reinterpret_cast<void const*>( lhs ) != rhs;
}
};
template<typename T>
struct Evaluator<T* const&, long const&, IsNotEqualTo> {
static bool evaluate( T* lhs, long rhs) {
return lhs != reinterpret_cast<void const*>( rhs );
}
};
} // end of namespace Internal
} // end of namespace Catch
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#endif // TWOBLUECUBES_CATCH_EVALUATE_HPP_INCLUDED
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