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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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