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