71 lines
		
	
	
		
			2.2 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
		
		
			
		
	
	
			71 lines
		
	
	
		
			2.2 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
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								//  (C) Copyright Gennadiy Rozental 2001.
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								//  Distributed under the Boost Software License, Version 1.0.
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								//  (See accompanying file LICENSE_1_0.txt or copy at
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								//  http://www.boost.org/LICENSE_1_0.txt)
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								//  See http://www.boost.org/libs/test for the library home page.
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								//
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								//  File        : $RCSfile$
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								//
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								//  Version     : $Revision: 74248 $
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								//
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								//  Description : toolbox implementation details
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								// ***************************************************************************
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								#ifndef BOOST_TEST_TOOLS_DETAIL_EXPRESSION_HOLDER_HPP_012705GER
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								#define BOOST_TEST_TOOLS_DETAIL_EXPRESSION_HOLDER_HPP_012705GER
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								#ifdef BOOST_NO_CXX11_AUTO_DECLARATIONS
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								#include <boost/test/detail/suppress_warnings.hpp>
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								//____________________________________________________________________________//
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								namespace boost {
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								namespace test_tools {
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								namespace tt_detail {
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								// ************************************************************************** //
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								// **************         tt_detail::expression_holder         ************** //
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								// ************************************************************************** //
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								class expression_holder {
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								public:
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								    virtual                     ~expression_holder() {}
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								    virtual assertion_result    evaluate( bool no_message = false )  const = 0;
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								};
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								//____________________________________________________________________________//
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								template<typename E>
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								class  expression_holder_t: public expression_holder {
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								public:
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								    explicit                    expression_holder_t( E const& e ) : m_expr( e ) {}
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								private:
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								    virtual assertion_result    evaluate( bool no_message = false )  const { return m_expr.evaluate( no_message ); }
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								    E                           m_expr;
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								};
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								//____________________________________________________________________________//
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								template<typename E>
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								expression_holder_t<E>
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								hold_expression( E const& e )
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								{
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								    return expression_holder_t<E>( e );
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								}
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								//____________________________________________________________________________//
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								} // namespace tt_detail
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								} // namespace test_tools
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								} // namespace boost
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								#include <boost/test/detail/enable_warnings.hpp>
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								#endif
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								#endif // BOOST_TEST_TOOLS_DETAIL_EXPRESSION_HOLDER_HPP_012705GER
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