catch2/include/internal/catch_expression_builder.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_BUILDER_HPP_INCLUDED
#define TWOBLUECUBES_CATCH_EXPRESSION_BUILDER_HPP_INCLUDED
#include "catch_expression.hpp"
#include "catch_resultinfo_builder.hpp"
#include "catch_tostring.hpp"
#include "catch_resultinfo.hpp"
#include "catch_result_type.h"
#include "catch_context.h"
#include "catch_common.h"
#include <sstream>
namespace Catch {
class ExpressionBuilder {
public:
ExpressionBuilder( const SourceLineInfo& lineInfo,
const char* macroName,
const char* expr = "",
bool isNot = false )
: m_result( expr, isNot, lineInfo, macroName ),
m_messageStream()
{}
template<typename T>
Expression<const T&> operator->* ( const T & operand ) {
Expression<const T&> expr( m_result, operand );
return expr;
}
Expression<bool> operator->* ( bool value ) {
Expression<bool> expr( m_result, value );
return expr;
}
template<typename T>
ExpressionBuilder& operator << ( const T & value ) {
m_messageStream << Catch::toString( value );
return *this;
}
template<typename MatcherT, typename ArgT>
ExpressionBuilder& acceptMatcher( const MatcherT& matcher,
const ArgT& arg,
const std::string& matcherCallAsString ) {
std::string matcherAsString = Catch::toString( matcher );
if( matcherAsString == "{?}" )
matcherAsString = matcherCallAsString;
m_result.setLhs( Catch::toString( arg ) );
m_result.setRhs( matcherAsString );
m_result.setOp( "matches" );
m_result.setResultType( matcher( arg ) ? ResultWas::Ok : ResultWas::ExpressionFailed );
return *this;
}
template<typename MatcherT, typename ArgT>
ExpressionBuilder& acceptMatcher( const MatcherT& matcher,
ArgT* arg,
const std::string& matcherCallAsString ) {
std::string matcherAsString = Catch::toString( matcher );
if( matcherAsString == "{?}" )
matcherAsString = matcherCallAsString;
m_result.setLhs( Catch::toString( arg ) );
m_result.setRhs( matcherAsString );
m_result.setOp( "matches" );
m_result.setResultType( matcher( arg ) ? ResultWas::Ok : ResultWas::ExpressionFailed );
return *this;
}
ExpressionBuilder& setResultType( ResultWas::OfType resultType ) {
m_result.setResultType( resultType );
return *this;
}
operator ResultInfoBuilder&() {
m_result.setMessage( m_messageStream.str() );
return m_result;
}
private:
ResultInfoBuilder m_result;
std::ostringstream m_messageStream;
};
} // end namespace Catch
#endif // TWOBLUECUBES_CATCH_EXPRESSION_BUILDER_HPP_INCLUDED