Chris@16: // Copyright David Abrahams 2003.
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: #ifndef VALUE_IS_XXX_DWA2003224_HPP
Chris@16: # define VALUE_IS_XXX_DWA2003224_HPP
Chris@16: 
Chris@16: # include <boost/config.hpp>
Chris@16: # include <boost/mpl/bool.hpp>
Chris@16: # include <boost/preprocessor/enum_params.hpp>
Chris@16: 
Chris@16: # if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
Chris@16: # include <boost/type_traits/is_reference.hpp>
Chris@16: # include <boost/type_traits/add_reference.hpp>
Chris@16: 
Chris@16: #  define BOOST_PYTHON_VALUE_IS_XXX_DEF(name, qualified_name, nargs)    \
Chris@16: template <class X_>                                                     \
Chris@16: struct value_is_##name                                                  \
Chris@16: {                                                                       \
Chris@16:     typedef char yes;                                                   \
Chris@16:     typedef char (&no)[2];                                              \
Chris@16:                                                                         \
Chris@16:     static typename add_reference<X_>::type dummy;                      \
Chris@16:                                                                         \
Chris@16:     template < BOOST_PP_ENUM_PARAMS_Z(1, nargs, class U) >              \
Chris@16:     static yes test(                                                    \
Chris@16:        qualified_name< BOOST_PP_ENUM_PARAMS_Z(1, nargs, U) > const&, int \
Chris@16:     );                                                                  \
Chris@16:                                                                         \
Chris@16:     template <class U>                                                  \
Chris@16:     static no test(U&, ...);                                            \
Chris@16:                                                                         \
Chris@16:     BOOST_STATIC_CONSTANT(                                              \
Chris@16:         bool, value                                                     \
Chris@16:         = (sizeof(test(dummy, 0)) == sizeof(yes)));                     \
Chris@16:                                                                         \
Chris@16:     typedef mpl::bool_<value> type;                                    \
Chris@16: };
Chris@16: 
Chris@16: # else
Chris@16: 
Chris@16: #  include <boost/type_traits/remove_reference.hpp>
Chris@16: #  include <boost/type_traits/remove_cv.hpp>
Chris@16: #  include <boost/python/detail/is_xxx.hpp>
Chris@16: 
Chris@16: #  define BOOST_PYTHON_VALUE_IS_XXX_DEF(name, qualified_name, nargs)    \
Chris@16: template <class X_>                                                     \
Chris@16: struct value_is_##name                                                  \
Chris@16: {                                                                       \
Chris@16:     BOOST_PYTHON_IS_XXX_DEF(name,qualified_name,nargs)                  \
Chris@16:     BOOST_STATIC_CONSTANT(bool, value = is_##name<                      \
Chris@16:                                typename remove_cv<                      \
Chris@16:                                   typename remove_reference<X_>::type   \
Chris@16:                                >::type                                  \
Chris@16:                            >::value);                                   \
Chris@16:     typedef mpl::bool_<value> type;                                    \
Chris@16:                                                                         \
Chris@16: };                                                              
Chris@16: 
Chris@16: # endif
Chris@16: 
Chris@16: #endif // VALUE_IS_XXX_DWA2003224_HPP