/* * 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_LHS_HPP_INCLUDED #define TWOBLUECUBES_CATCH_EXPRESSION_LHS_HPP_INCLUDED #include "catch_expressionresult_builder.h" #include "catch_evaluate.hpp" #include "catch_tostring.hpp" namespace Catch { // Wraps the LHS of an expression and captures the operator and RHS (if any) - wrapping them all // in an ExpressionResultBuilder object template<typename T> class ExpressionLhs { void operator = ( ExpressionLhs const& ); public: ExpressionLhs( T lhs ) : m_lhs( lhs ) {} template<typename RhsT> ExpressionResultBuilder& operator == ( RhsT const& rhs ) { return captureExpression<Internal::IsEqualTo>( rhs ); } template<typename RhsT> ExpressionResultBuilder& operator != ( RhsT const& rhs ) { return captureExpression<Internal::IsNotEqualTo>( rhs ); } template<typename RhsT> ExpressionResultBuilder& operator < ( RhsT const& rhs ) { return captureExpression<Internal::IsLessThan>( rhs ); } template<typename RhsT> ExpressionResultBuilder& operator > ( RhsT const& rhs ) { return captureExpression<Internal::IsGreaterThan>( rhs ); } template<typename RhsT> ExpressionResultBuilder& operator <= ( RhsT const& rhs ) { return captureExpression<Internal::IsLessThanOrEqualTo>( rhs ); } template<typename RhsT> ExpressionResultBuilder& operator >= ( RhsT const& rhs ) { return captureExpression<Internal::IsGreaterThanOrEqualTo>( rhs ); } ExpressionResultBuilder& operator == ( bool rhs ) { return captureExpression<Internal::IsEqualTo>( rhs ); } ExpressionResultBuilder& operator != ( bool rhs ) { return captureExpression<Internal::IsNotEqualTo>( rhs ); } ExpressionResultBuilder& endExpression( ResultDisposition::Flags resultDisposition ) { bool value = m_lhs ? true : false; return m_result .setLhs( Catch::toString( value ) ) .setResultType( value ) .endExpression( resultDisposition ); } // Only simple binary expressions are allowed on the LHS. // If more complex compositions are required then place the sub expression in parentheses template<typename RhsT> STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator + ( RhsT const& ); template<typename RhsT> STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator - ( RhsT const& ); template<typename RhsT> STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator / ( RhsT const& ); template<typename RhsT> STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator * ( RhsT const& ); template<typename RhsT> STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator && ( RhsT const& ); template<typename RhsT> STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator || ( RhsT const& ); private: template<Internal::Operator Op, typename RhsT> ExpressionResultBuilder& captureExpression( RhsT const& rhs ) { return m_result .setResultType( Internal::compare<Op>( m_lhs, rhs ) ) .setLhs( Catch::toString( m_lhs ) ) .setRhs( Catch::toString( rhs ) ) .setOp( Internal::OperatorTraits<Op>::getName() ); } private: ExpressionResultBuilder m_result; T m_lhs; }; } // end namespace Catch #endif // TWOBLUECUBES_CATCH_EXPRESSION_LHS_HPP_INCLUDED