| // Copyright David Abrahams 2003. |
| // 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) |
| #ifndef VALUE_IS_XXX_DWA2003224_HPP |
| # define VALUE_IS_XXX_DWA2003224_HPP |
| |
| # include <boost/config.hpp> |
| # include <boost/mpl/bool.hpp> |
| # include <boost/preprocessor/enum_params.hpp> |
| |
| # if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
| # include <boost/type_traits/is_reference.hpp> |
| # include <boost/type_traits/add_reference.hpp> |
| |
| # define BOOST_PYTHON_VALUE_IS_XXX_DEF(name, qualified_name, nargs) \ |
| template <class X_> \ |
| struct value_is_##name \ |
| { \ |
| typedef char yes; \ |
| typedef char (&no)[2]; \ |
| \ |
| static typename add_reference<X_>::type dummy; \ |
| \ |
| template < BOOST_PP_ENUM_PARAMS_Z(1, nargs, class U) > \ |
| static yes test( \ |
| qualified_name< BOOST_PP_ENUM_PARAMS_Z(1, nargs, U) > const&, int \ |
| ); \ |
| \ |
| template <class U> \ |
| static no test(U&, ...); \ |
| \ |
| BOOST_STATIC_CONSTANT( \ |
| bool, value \ |
| = (sizeof(test(dummy, 0)) == sizeof(yes))); \ |
| \ |
| typedef mpl::bool_<value> type; \ |
| }; |
| |
| # else |
| |
| # include <boost/type_traits/remove_reference.hpp> |
| # include <boost/type_traits/remove_cv.hpp> |
| # include <boost/python/detail/is_xxx.hpp> |
| |
| # define BOOST_PYTHON_VALUE_IS_XXX_DEF(name, qualified_name, nargs) \ |
| template <class X_> \ |
| struct value_is_##name \ |
| { \ |
| BOOST_PYTHON_IS_XXX_DEF(name,qualified_name,nargs) \ |
| BOOST_STATIC_CONSTANT(bool, value = is_##name< \ |
| typename remove_cv< \ |
| typename remove_reference<X_>::type \ |
| >::type \ |
| >::value); \ |
| typedef mpl::bool_<value> type; \ |
| \ |
| }; |
| |
| # endif |
| |
| #endif // VALUE_IS_XXX_DWA2003224_HPP |