--- /dev/null
+// Copyright David Abrahams 2002.
+// 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 INDIRECT_TRAITS_DWA2002131_HPP
+# define INDIRECT_TRAITS_DWA2002131_HPP
+# include <boost/type_traits/is_function.hpp>
+# include <boost/type_traits/is_reference.hpp>
+# include <boost/type_traits/is_pointer.hpp>
+# include <boost/type_traits/is_class.hpp>
+# include <boost/type_traits/is_const.hpp>
+# include <boost/type_traits/is_volatile.hpp>
+# include <boost/type_traits/is_member_function_pointer.hpp>
+# include <boost/type_traits/is_member_pointer.hpp>
+# include <boost/type_traits/remove_cv.hpp>
+# include <boost/type_traits/remove_reference.hpp>
+# include <boost/type_traits/remove_pointer.hpp>
+
+# include <boost/type_traits/detail/ice_and.hpp>
+# include <boost/detail/workaround.hpp>
+
+# include <boost/mpl/eval_if.hpp>
+# include <boost/mpl/if.hpp>
+# include <boost/mpl/bool.hpp>
+# include <boost/mpl/and.hpp>
+# include <boost/mpl/not.hpp>
+# include <boost/mpl/aux_/lambda_support.hpp>
+
+# ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+# include <boost/detail/is_function_ref_tester.hpp>
+# endif
+
+namespace boost { namespace detail {
+
+namespace indirect_traits {
+
+# ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+template <class T>
+struct is_reference_to_const : mpl::false_
+{
+};
+
+template <class T>
+struct is_reference_to_const<T const&> : mpl::true_
+{
+};
+
+# if defined(BOOST_MSVC) && _MSC_FULL_VER <= 13102140 // vc7.01 alpha workaround
+template<class T>
+struct is_reference_to_const<T const volatile&> : mpl::true_
+{
+};
+# endif
+
+template <class T>
+struct is_reference_to_function : mpl::false_
+{
+};
+
+template <class T>
+struct is_reference_to_function<T&> : is_function<T>
+{
+};
+
+template <class T>
+struct is_pointer_to_function : mpl::false_
+{
+};
+
+// There's no such thing as a pointer-to-cv-function, so we don't need
+// specializations for those
+template <class T>
+struct is_pointer_to_function<T*> : is_function<T>
+{
+};
+
+template <class T>
+struct is_reference_to_member_function_pointer_impl : mpl::false_
+{
+};
+
+template <class T>
+struct is_reference_to_member_function_pointer_impl<T&>
+ : is_member_function_pointer<typename remove_cv<T>::type>
+{
+};
+
+
+template <class T>
+struct is_reference_to_member_function_pointer
+ : is_reference_to_member_function_pointer_impl<T>
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_reference_to_member_function_pointer,(T))
+};
+
+template <class T>
+struct is_reference_to_function_pointer_aux
+ : mpl::and_<
+ is_reference<T>
+ , is_pointer_to_function<
+ typename remove_cv<
+ typename remove_reference<T>::type
+ >::type
+ >
+ >
+{
+ // There's no such thing as a pointer-to-cv-function, so we don't need specializations for those
+};
+
+template <class T>
+struct is_reference_to_function_pointer
+ : mpl::if_<
+ is_reference_to_function<T>
+ , mpl::false_
+ , is_reference_to_function_pointer_aux<T>
+ >::type
+{
+};
+
+template <class T>
+struct is_reference_to_non_const
+ : mpl::and_<
+ is_reference<T>
+ , mpl::not_<
+ is_reference_to_const<T>
+ >
+ >
+{
+};
+
+template <class T>
+struct is_reference_to_volatile : mpl::false_
+{
+};
+
+template <class T>
+struct is_reference_to_volatile<T volatile&> : mpl::true_
+{
+};
+
+# if defined(BOOST_MSVC) && _MSC_FULL_VER <= 13102140 // vc7.01 alpha workaround
+template <class T>
+struct is_reference_to_volatile<T const volatile&> : mpl::true_
+{
+};
+# endif
+
+
+template <class T>
+struct is_reference_to_pointer : mpl::false_
+{
+};
+
+template <class T>
+struct is_reference_to_pointer<T*&> : mpl::true_
+{
+};
+
+template <class T>
+struct is_reference_to_pointer<T* const&> : mpl::true_
+{
+};
+
+template <class T>
+struct is_reference_to_pointer<T* volatile&> : mpl::true_
+{
+};
+
+template <class T>
+struct is_reference_to_pointer<T* const volatile&> : mpl::true_
+{
+};
+
+template <class T>
+struct is_reference_to_class
+ : mpl::and_<
+ is_reference<T>
+ , is_class<
+ typename remove_cv<
+ typename remove_reference<T>::type
+ >::type
+ >
+ >
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_reference_to_class,(T))
+};
+
+template <class T>
+struct is_pointer_to_class
+ : mpl::and_<
+ is_pointer<T>
+ , is_class<
+ typename remove_cv<
+ typename remove_pointer<T>::type
+ >::type
+ >
+ >
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_pointer_to_class,(T))
+};
+
+# else
+
+using namespace boost::detail::is_function_ref_tester_;
+
+typedef char (&inner_yes_type)[3];
+typedef char (&inner_no_type)[2];
+typedef char (&outer_no_type)[1];
+
+template <typename V>
+struct is_const_help
+{
+ typedef typename mpl::if_<
+ is_const<V>
+ , inner_yes_type
+ , inner_no_type
+ >::type type;
+};
+
+template <typename V>
+struct is_volatile_help
+{
+ typedef typename mpl::if_<
+ is_volatile<V>
+ , inner_yes_type
+ , inner_no_type
+ >::type type;
+};
+
+template <typename V>
+struct is_pointer_help
+{
+ typedef typename mpl::if_<
+ is_pointer<V>
+ , inner_yes_type
+ , inner_no_type
+ >::type type;
+};
+
+template <typename V>
+struct is_class_help
+{
+ typedef typename mpl::if_<
+ is_class<V>
+ , inner_yes_type
+ , inner_no_type
+ >::type type;
+};
+
+template <class T>
+struct is_reference_to_function_aux
+{
+ static T t;
+ BOOST_STATIC_CONSTANT(
+ bool, value = sizeof(detail::is_function_ref_tester(t,0)) == sizeof(::boost::type_traits::yes_type));
+ typedef mpl::bool_<value> type;
+ };
+
+template <class T>
+struct is_reference_to_function
+ : mpl::if_<is_reference<T>, is_reference_to_function_aux<T>, mpl::bool_<false> >::type
+{
+};
+
+template <class T>
+struct is_pointer_to_function_aux
+{
+ static T t;
+ BOOST_STATIC_CONSTANT(
+ bool, value
+ = sizeof(::boost::type_traits::is_function_ptr_tester(t)) == sizeof(::boost::type_traits::yes_type));
+ typedef mpl::bool_<value> type;
+};
+
+template <class T>
+struct is_pointer_to_function
+ : mpl::if_<is_pointer<T>, is_pointer_to_function_aux<T>, mpl::bool_<false> >::type
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_pointer_to_function,(T))
+};
+
+struct false_helper1
+{
+ template <class T>
+ struct apply : mpl::false_
+ {
+ };
+};
+
+template <typename V>
+typename is_const_help<V>::type reference_to_const_helper(V&);
+outer_no_type
+reference_to_const_helper(...);
+
+struct true_helper1
+{
+ template <class T>
+ struct apply
+ {
+ static T t;
+ BOOST_STATIC_CONSTANT(
+ bool, value
+ = sizeof(reference_to_const_helper(t)) == sizeof(inner_yes_type));
+ typedef mpl::bool_<value> type;
+ };
+};
+
+template <bool ref = true>
+struct is_reference_to_const_helper1 : true_helper1
+{
+};
+
+template <>
+struct is_reference_to_const_helper1<false> : false_helper1
+{
+};
+
+
+template <class T>
+struct is_reference_to_const
+ : is_reference_to_const_helper1<is_reference<T>::value>::template apply<T>
+{
+};
+
+
+template <bool ref = true>
+struct is_reference_to_non_const_helper1
+{
+ template <class T>
+ struct apply
+ {
+ static T t;
+ BOOST_STATIC_CONSTANT(
+ bool, value
+ = sizeof(reference_to_const_helper(t)) == sizeof(inner_no_type));
+
+ typedef mpl::bool_<value> type;
+ };
+};
+
+template <>
+struct is_reference_to_non_const_helper1<false> : false_helper1
+{
+};
+
+
+template <class T>
+struct is_reference_to_non_const
+ : is_reference_to_non_const_helper1<is_reference<T>::value>::template apply<T>
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_reference_to_non_const,(T))
+};
+
+
+template <typename V>
+typename is_volatile_help<V>::type reference_to_volatile_helper(V&);
+outer_no_type
+reference_to_volatile_helper(...);
+
+template <bool ref = true>
+struct is_reference_to_volatile_helper1
+{
+ template <class T>
+ struct apply
+ {
+ static T t;
+ BOOST_STATIC_CONSTANT(
+ bool, value
+ = sizeof(reference_to_volatile_helper(t)) == sizeof(inner_yes_type));
+ typedef mpl::bool_<value> type;
+ };
+};
+
+template <>
+struct is_reference_to_volatile_helper1<false> : false_helper1
+{
+};
+
+
+template <class T>
+struct is_reference_to_volatile
+ : is_reference_to_volatile_helper1<is_reference<T>::value>::template apply<T>
+{
+};
+
+template <typename V>
+typename is_pointer_help<V>::type reference_to_pointer_helper(V&);
+outer_no_type reference_to_pointer_helper(...);
+
+template <class T>
+struct reference_to_pointer_impl
+{
+ static T t;
+ BOOST_STATIC_CONSTANT(
+ bool, value
+ = (sizeof((reference_to_pointer_helper)(t)) == sizeof(inner_yes_type))
+ );
+
+ typedef mpl::bool_<value> type;
+};
+
+template <class T>
+struct is_reference_to_pointer
+ : mpl::eval_if<is_reference<T>, reference_to_pointer_impl<T>, mpl::false_>::type
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_reference_to_pointer,(T))
+};
+
+template <class T>
+struct is_reference_to_function_pointer
+ : mpl::eval_if<is_reference<T>, is_pointer_to_function_aux<T>, mpl::false_>::type
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_reference_to_function_pointer,(T))
+};
+
+
+template <class T>
+struct is_member_function_pointer_help
+ : mpl::if_<is_member_function_pointer<T>, inner_yes_type, inner_no_type>
+{};
+
+template <typename V>
+typename is_member_function_pointer_help<V>::type member_function_pointer_helper(V&);
+outer_no_type member_function_pointer_helper(...);
+
+template <class T>
+struct is_pointer_to_member_function_aux
+{
+ static T t;
+ BOOST_STATIC_CONSTANT(
+ bool, value
+ = sizeof((member_function_pointer_helper)(t)) == sizeof(inner_yes_type));
+ typedef mpl::bool_<value> type;
+};
+
+template <class T>
+struct is_reference_to_member_function_pointer
+ : mpl::if_<
+ is_reference<T>
+ , is_pointer_to_member_function_aux<T>
+ , mpl::bool_<false>
+ >::type
+{
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_reference_to_member_function_pointer,(T))
+};
+
+template <typename V>
+typename is_class_help<V>::type reference_to_class_helper(V const volatile&);
+outer_no_type reference_to_class_helper(...);
+
+template <class T>
+struct is_reference_to_class
+{
+ static T t;
+ BOOST_STATIC_CONSTANT(
+ bool, value
+ = (is_reference<T>::value
+ & (sizeof(reference_to_class_helper(t)) == sizeof(inner_yes_type)))
+ );
+ typedef mpl::bool_<value> type;
+ BOOST_MPL_AUX_LAMBDA_SUPPORT(1,is_reference_to_class,(T))
+};
+
+template <typename V>
+typename is_class_help<V>::type pointer_to_class_helper(V const volatile*);
+outer_no_type pointer_to_class_helper(...);
+
+template <class T>
+struct is_pointer_to_class
+{
+ static T t;
+ BOOST_STATIC_CONSTANT(
+ bool, value
+ = (is_pointer<T>::value
+ && sizeof(pointer_to_class_helper(t)) == sizeof(inner_yes_type))
+ );
+ typedef mpl::bool_<value> type;
+};
+# endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+}
+
+using namespace indirect_traits;
+
+}} // namespace boost::python::detail
+
+#endif // INDIRECT_TRAITS_DWA2002131_HPP
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