| // Copyright (C) 2004 Peder Holt |
| // Use, modification and distribution is subject to the Boost Software |
| // License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt) |
| |
| #ifndef BOOST_TYPE_TRAITS_MSVC_REMOVE_CONST_HOLT_2004_0828 |
| #define BOOST_TYPE_TRAITS_MSVC_REMOVE_CONST_HOLT_2004_0828 |
| |
| #include <ndnboost/type_traits/msvc/typeof.hpp> |
| #include <ndnboost/type_traits/is_volatile.hpp> |
| #include <ndnboost/type_traits/is_const.hpp> |
| #include <ndnboost/type_traits/is_pointer.hpp> |
| #include <ndnboost/type_traits/is_array.hpp> |
| |
| namespace ndnboost { |
| namespace detail { |
| template<bool IsPointer,bool IsArray,bool IsConst,bool IsVolatile> |
| struct remove_const_impl_typeof { |
| template<typename T,typename ID> |
| struct inner { |
| typedef T type; |
| }; |
| template<typename T> |
| struct transform_type { |
| typedef T type; |
| }; |
| }; |
| template<> //Const |
| struct remove_const_impl_typeof<false,false,true,false> { |
| template<typename T,typename ID> |
| struct inner { |
| template<typename U> |
| static msvc_register_type<U,ID> test(U const&(*)()); |
| static msvc_register_type<T,ID> test(...); |
| BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (T(*)())(NULL) ) )); |
| typedef typename msvc_extract_type<ID>::id2type::type type; |
| }; |
| template<typename T> |
| struct transform_type { |
| typedef T& type; |
| }; |
| }; |
| template<> //CV |
| struct remove_const_impl_typeof<false,false,true,true> { |
| template<typename T,typename ID> |
| struct inner { |
| template<typename U> |
| static msvc_register_type<U volatile,ID> test(U const volatile&(*)()); |
| static msvc_register_type<T,ID> test(...); |
| BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (T(*)())(NULL) ) )); |
| typedef typename msvc_extract_type<ID>::id2type::type type; |
| }; |
| template<typename T> |
| struct transform_type { |
| typedef T& type; |
| }; |
| }; |
| template<> //Const Pointer |
| struct remove_const_impl_typeof<true,false,true,false> { |
| template<typename T,typename ID> |
| struct inner { |
| template<typename U> |
| static msvc_register_type<U,ID> test(void(*)(U const[])); |
| static msvc_register_type<T,ID> test(...); |
| BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (void(*)(T))(NULL) ) )); |
| typedef typename msvc_extract_type<ID>::id2type::type type; |
| }; |
| template<typename T> |
| struct transform_type { |
| typedef T type[]; |
| }; |
| }; |
| template<> //CV Pointer |
| struct remove_const_impl_typeof<true,false,true,true> { |
| template<typename T,typename ID> |
| struct inner { |
| template<typename U> |
| static msvc_register_type<U volatile,ID> test(void(*)(U const volatile[])); |
| static msvc_register_type<T,ID> test(...); |
| BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (void(*)(T))(NULL) ) )); |
| typedef typename msvc_extract_type<ID>::id2type::type type; |
| }; |
| template<typename T> |
| struct transform_type { |
| typedef T type[]; |
| }; |
| }; |
| template<> //Const Array |
| struct remove_const_impl_typeof<false,true,true,false> { |
| template<typename T,typename ID> |
| struct inner { |
| BOOST_STATIC_CONSTANT(unsigned,value=(sizeof(T)/sizeof((*((T*)NULL))[0]))); |
| |
| template<typename U> |
| static msvc_register_type<U[value],ID> test(void(*)(U const[])); |
| static msvc_register_type<T,ID> test(...); |
| BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (void(*)(T))(NULL) ) )); |
| typedef typename msvc_extract_type<ID>::id2type::type type; |
| }; |
| template<typename T> |
| struct transform_type { |
| typedef T type; |
| }; |
| }; |
| |
| template<> //CV Array |
| struct remove_const_impl_typeof<false,true,true,true> { |
| template<typename T,typename ID> |
| struct inner { |
| BOOST_STATIC_CONSTANT(unsigned,value=(sizeof(T)/sizeof((*((T*)NULL))[0]))); |
| |
| template<typename U> |
| static msvc_register_type<U volatile[value],ID> test(void(*)(U const volatile[])); |
| static msvc_register_type<T,ID> test(...); |
| BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (void(*)(T))(NULL) ) )); |
| typedef typename msvc_extract_type<ID>::id2type::type type; |
| }; |
| template<typename T> |
| struct transform_type { |
| typedef T type; |
| }; |
| }; |
| |
| } //namespace detail |
| |
| template<typename T> |
| struct remove_const { |
| typedef ndnboost::detail::remove_const_impl_typeof< |
| ndnboost::is_pointer<T>::value, |
| ndnboost::is_array<T>::value, |
| ndnboost::is_const<T>::value, |
| ndnboost::is_volatile<T>::value |
| > remove_const_type; |
| typedef typename |
| remove_const_type::template inner< |
| typename remove_const_type::template transform_type<T>::type, |
| remove_const<T> |
| >::type |
| type; |
| BOOST_MPL_AUX_LAMBDA_SUPPORT(1,remove_const,T) |
| }; |
| }//namespace ndnboost |
| |
| #endif //BOOST_TYPE_TRAITS_MSVC_REMOVE_CONST_HOLT_2004_0828 |