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