整理

include/boost/detail/indirect_traits.hpp

@@ -0,0 +1,195 @@
+// 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/integral_constant.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/detail/workaround.hpp>
+# include <boost/detail/select_type.hpp>
+
+
+namespace boost { namespace detail {
+
+namespace indirect_traits {
+
+template <class T>
+struct is_reference_to_const : boost::false_type
+{
+};
+
+template <class T>
+struct is_reference_to_const<T const&> : boost::true_type
+{
+};
+
+#   if defined(BOOST_MSVC) && _MSC_FULL_VER <= 13102140 // vc7.01 alpha workaround
+template<class T>
+struct is_reference_to_const<T const volatile&> : boost::true_type
+{
+};
+#   endif
+
+template <class T>
+struct is_reference_to_function : boost::false_type
+{
+};
+
+template <class T>
+struct is_reference_to_function<T&> : is_function<T>
+{
+};
+
+template <class T>
+struct is_pointer_to_function : boost::false_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_pointer_to_function<T*> : is_function<T>
+{
+};
+
+template <class T>
+struct is_reference_to_member_function_pointer_impl : boost::false_type
+{
+};
+
+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>
+{
+};
+
+template <class T>
+struct is_reference_to_function_pointer_aux
+    : boost::integral_constant<bool,
+          is_reference<T>::value &&
+          is_pointer_to_function<
+              typename remove_cv<
+                  typename remove_reference<T>::type
+              >::type
+          >::value
+      >
+{
+    // 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
+    : boost::detail::if_true<
+          is_reference_to_function<T>::value
+      >::template then<
+          boost::false_type
+        , is_reference_to_function_pointer_aux<T>
+      >::type
+{
+};
+
+template <class T>
+struct is_reference_to_non_const
+    : boost::integral_constant<bool,
+          is_reference<T>::value &&
+          !is_reference_to_const<T>::value
+      >
+{
+};
+
+template <class T>
+struct is_reference_to_volatile : boost::false_type
+{
+};
+
+template <class T>
+struct is_reference_to_volatile<T volatile&> : boost::true_type
+{
+};
+
+#   if defined(BOOST_MSVC) && _MSC_FULL_VER <= 13102140 // vc7.01 alpha workaround
+template <class T>
+struct is_reference_to_volatile<T const volatile&> : boost::true_type
+{
+};
+#   endif
+
+
+template <class T>
+struct is_reference_to_pointer : boost::false_type
+{
+};
+
+template <class T>
+struct is_reference_to_pointer<T*&> : boost::true_type
+{
+};
+
+template <class T>
+struct is_reference_to_pointer<T* const&> : boost::true_type
+{
+};
+
+template <class T>
+struct is_reference_to_pointer<T* volatile&> : boost::true_type
+{
+};
+
+template <class T>
+struct is_reference_to_pointer<T* const volatile&> : boost::true_type
+{
+};
+
+template <class T>
+struct is_reference_to_class
+    : boost::integral_constant<bool,
+          is_reference<T>::value &&
+          is_class<
+              typename remove_cv<
+                  typename remove_reference<T>::type
+              >::type
+          >::value
+      >
+{
+};
+
+template <class T>
+struct is_pointer_to_class
+    : boost::integral_constant<bool,
+          is_pointer<T>::value &&
+          is_class<
+              typename remove_cv<
+                  typename remove_pointer<T>::type
+              >::type
+          >::value
+      >
+{
+};
+
+
+}
+
+using namespace indirect_traits;
+
+}} // namespace boost::python::detail
+
+#endif // INDIRECT_TRAITS_DWA2002131_HPP