ceph/src/boost/boost/test/tools/detail/expression_holder.hpp

   1 //  (C) Copyright Gennadiy Rozental 2001.
   2 //  Distributed under the Boost Software License, Version 1.0.
   3 //  (See accompanying file LICENSE_1_0.txt or copy at
   4 //  http://www.boost.org/LICENSE_1_0.txt)
   5
   6 //  See http://www.boost.org/libs/test for the library home page.
   7 //
   8 //  File        : $RCSfile$
   9 //
  10 //  Version     : $Revision: 74248 $
  11 //
  12 //  Description : toolbox implementation details
  13 // ***************************************************************************
  14
  15 #ifndef BOOST_TEST_TOOLS_DETAIL_EXPRESSION_HOLDER_HPP_012705GER
  16 #define BOOST_TEST_TOOLS_DETAIL_EXPRESSION_HOLDER_HPP_012705GER
  17
  18 #ifdef BOOST_NO_CXX11_AUTO_DECLARATIONS
  19
  20 #include <boost/test/detail/suppress_warnings.hpp>
  21
  22 //____________________________________________________________________________//
  23
  24 namespace boost {
  25 namespace test_tools {
  26 namespace tt_detail {
  27
  28 // ************************************************************************** //
  29 // **************         tt_detail::expression_holder         ************** //
  30 // ************************************************************************** //
  31
  32 class expression_holder {
  33 public:
  34     virtual                     ~expression_holder() {}
  35     virtual assertion_result    evaluate( bool no_message = false )  const = 0;
  36 };
  37
  38 //____________________________________________________________________________//
  39
  40 template<typename E>
  41 class  expression_holder_t: public expression_holder {
  42 public:
  43     explicit                    expression_holder_t( E const& e ) : m_expr( e ) {}
  44
  45 private:
  46     virtual assertion_result    evaluate( bool no_message = false )  const { return m_expr.evaluate( no_message ); }
  47
  48     E                           m_expr;
  49 };
  50
  51 //____________________________________________________________________________//
  52
  53 template<typename E>
  54 expression_holder_t<E>
  55 hold_expression( E const& e )
  56 {
  57     return expression_holder_t<E>( e );
  58 }
  59
  60 //____________________________________________________________________________//
  61
  62 } // namespace tt_detail
  63 } // namespace test_tools
  64 } // namespace boost
  65
  66 #include <boost/test/detail/enable_warnings.hpp>
  67
  68 #endif
  69
  70 #endif // BOOST_TEST_TOOLS_DETAIL_EXPRESSION_HOLDER_HPP_012705GER