[857] | 1 | // Copyright David Abrahams 2003.
|
---|
| 2 | // Distributed under the Boost Software License, Version 1.0. (See
|
---|
| 3 | // accompanying file LICENSE_1_0.txt or copy at
|
---|
| 4 | // http://www.boost.org/LICENSE_1_0.txt)
|
---|
| 5 | #ifndef VALUE_IS_XXX_DWA2003224_HPP
|
---|
| 6 | # define VALUE_IS_XXX_DWA2003224_HPP
|
---|
| 7 |
|
---|
| 8 | # include <boost/config.hpp>
|
---|
| 9 | # include <boost/mpl/bool.hpp>
|
---|
| 10 | # include <boost/preprocessor/enum_params.hpp>
|
---|
| 11 |
|
---|
| 12 | # if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
|
---|
| 13 | # include <boost/type_traits/is_reference.hpp>
|
---|
| 14 | # include <boost/type_traits/add_reference.hpp>
|
---|
| 15 |
|
---|
| 16 | # define BOOST_PYTHON_VALUE_IS_XXX_DEF(name, qualified_name, nargs) \
|
---|
| 17 | template <class X_> \
|
---|
| 18 | struct value_is_##name \
|
---|
| 19 | { \
|
---|
| 20 | typedef char yes; \
|
---|
| 21 | typedef char (&no)[2]; \
|
---|
| 22 | \
|
---|
| 23 | static typename add_reference<X_>::type dummy; \
|
---|
| 24 | \
|
---|
| 25 | template < BOOST_PP_ENUM_PARAMS_Z(1, nargs, class U) > \
|
---|
| 26 | static yes test( \
|
---|
| 27 | qualified_name< BOOST_PP_ENUM_PARAMS_Z(1, nargs, U) > const&, int \
|
---|
| 28 | ); \
|
---|
| 29 | \
|
---|
| 30 | template <class U> \
|
---|
| 31 | static no test(U&, ...); \
|
---|
| 32 | \
|
---|
| 33 | BOOST_STATIC_CONSTANT( \
|
---|
| 34 | bool, value \
|
---|
| 35 | = (sizeof(test(dummy, 0)) == sizeof(yes))); \
|
---|
| 36 | \
|
---|
| 37 | typedef mpl::bool_<value> type; \
|
---|
| 38 | };
|
---|
| 39 |
|
---|
| 40 | # else
|
---|
| 41 |
|
---|
| 42 | # include <boost/type_traits/remove_reference.hpp>
|
---|
| 43 | # include <boost/type_traits/remove_cv.hpp>
|
---|
| 44 | # include <boost/python/detail/is_xxx.hpp>
|
---|
| 45 |
|
---|
| 46 | # define BOOST_PYTHON_VALUE_IS_XXX_DEF(name, qualified_name, nargs) \
|
---|
| 47 | template <class X_> \
|
---|
| 48 | struct value_is_##name \
|
---|
| 49 | { \
|
---|
| 50 | BOOST_PYTHON_IS_XXX_DEF(name,qualified_name,nargs) \
|
---|
| 51 | BOOST_STATIC_CONSTANT(bool, value = is_##name< \
|
---|
| 52 | typename remove_cv< \
|
---|
| 53 | typename remove_reference<X_>::type \
|
---|
| 54 | >::type \
|
---|
| 55 | >::value); \
|
---|
| 56 | typedef mpl::bool_<value> type; \
|
---|
| 57 | \
|
---|
| 58 | };
|
---|
| 59 |
|
---|
| 60 | # endif
|
---|
| 61 |
|
---|
| 62 | #endif // VALUE_IS_XXX_DWA2003224_HPP
|
---|