catch2/include/internal/catch_expression.hpp

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/*
* Created by Phil on 11/5/2012.
* Copyright 2012 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_EXPRESSION_HPP_INCLUDED
#define TWOBLUECUBES_CATCH_EXPRESSION_HPP_INCLUDED
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#include "catch_resultinfo_builder.h"
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#include "catch_evaluate.hpp"
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namespace Catch {
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template<typename T>
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class Expression {
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void operator = ( const Expression& );
public:
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Expression( ResultInfoBuilder& result, T lhs )
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: m_result( result.setLhs( Catch::toString( lhs ) ) ),
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m_lhs( lhs )
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{}
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template<typename RhsT>
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ResultInfoBuilder& operator == ( const RhsT& rhs ) {
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return captureExpression<Internal::IsEqualTo>( rhs );
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}
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template<typename RhsT>
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ResultInfoBuilder& operator != ( const RhsT& rhs ) {
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return captureExpression<Internal::IsNotEqualTo>( rhs );
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}
template<typename RhsT>
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ResultInfoBuilder& operator < ( const RhsT& rhs ) {
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return captureExpression<Internal::IsLessThan>( rhs );
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}
template<typename RhsT>
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ResultInfoBuilder& operator > ( const RhsT& rhs ) {
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return captureExpression<Internal::IsGreaterThan>( rhs );
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}
template<typename RhsT>
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ResultInfoBuilder& operator <= ( const RhsT& rhs ) {
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return captureExpression<Internal::IsLessThanOrEqualTo>( rhs );
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}
template<typename RhsT>
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ResultInfoBuilder& operator >= ( const RhsT& rhs ) {
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return captureExpression<Internal::IsGreaterThanOrEqualTo>( rhs );
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}
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ResultInfoBuilder& operator == ( bool rhs ) {
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return captureExpression<Internal::IsEqualTo>( rhs );
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}
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ResultInfoBuilder& operator != ( bool rhs ) {
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return captureExpression<Internal::IsNotEqualTo>( rhs );
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}
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operator ResultInfoBuilder& () {
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return m_result.setResultType( m_lhs ? ResultWas::Ok : ResultWas::ExpressionFailed );
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}
template<typename RhsT>
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STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator + ( const RhsT& );
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template<typename RhsT>
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STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator - ( const RhsT& );
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private:
template<Internal::Operator Op, typename RhsT>
ResultInfoBuilder& captureExpression( const RhsT& rhs ) {
return m_result
.setResultType( Internal::compare<Op>( m_lhs, rhs ) ? ResultWas::Ok : ResultWas::ExpressionFailed )
.setRhs( Catch::toString( rhs ) )
.setOp( Internal::OperatorTraits<Op>::getName() );
}
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private:
ResultInfoBuilder& m_result;
T m_lhs;
};
} // end namespace Catch
#endif // TWOBLUECUBES_CATCH_EXPRESSION_HPP_INCLUDED