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