191 lines
7.6 KiB
C++
191 lines
7.6 KiB
C++
// Copyright (C) 2004 Peder Holt
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_TYPE_TRAITS_MSVC_REMOVE_CV_HOLT_2004_0901
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#define BOOST_TYPE_TRAITS_MSVC_REMOVE_CV_HOLT_2004_0901
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#include <boost/type_traits/msvc/typeof.hpp>
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#include <boost/type_traits/is_volatile.hpp>
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#include <boost/type_traits/is_const.hpp>
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#include <boost/type_traits/is_pointer.hpp>
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#include <boost/type_traits/is_array.hpp>
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namespace boost {
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namespace detail {
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template<bool IsPointer,bool IsArray,bool IsConst,bool IsVolatile>
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struct remove_cv_impl_typeof {
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template<typename T,typename ID>
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struct inner {
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typedef T type;
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};
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template<typename T>
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struct transform_type {
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typedef T type;
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};
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};
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template<> //Volatile
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struct remove_cv_impl_typeof<false,false,false,true> {
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template<typename T,typename ID>
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struct inner {
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template<typename U>
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static msvc_register_type<U,ID> test(U volatile&(*)());
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static msvc_register_type<T,ID> test(...);
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BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (T(*)())(NULL) ) ));
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typedef typename msvc_extract_type<ID>::id2type::type type;
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};
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template<typename T>
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struct transform_type {
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typedef T& type;
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};
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};
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template<> //Const
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struct remove_cv_impl_typeof<false,false,true,false> {
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template<typename T,typename ID>
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struct inner {
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template<typename U>
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static msvc_register_type<U,ID> test(U const&(*)());
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static msvc_register_type<T,ID> test(...);
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BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (T(*)())(NULL) ) ));
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typedef typename msvc_extract_type<ID>::id2type::type type;
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};
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template<typename T>
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struct transform_type {
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typedef T& type;
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};
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};
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template<> //CV
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struct remove_cv_impl_typeof<false,false,true,true> {
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template<typename T,typename ID>
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struct inner {
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template<typename U>
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static msvc_register_type<U,ID> test(U const volatile&(*)());
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static msvc_register_type<T,ID> test(...);
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BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (T(*)())(NULL) ) ));
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typedef typename msvc_extract_type<ID>::id2type::type type;
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};
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template<typename T>
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struct transform_type {
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typedef T& type;
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};
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};
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template<> //Volatile Pointer
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struct remove_cv_impl_typeof<true,false,false,true> {
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template<typename T,typename ID>
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struct inner {
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template<typename U>
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static msvc_register_type<U,ID> test(void(*)(U volatile[]));
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static msvc_register_type<T,ID> test(...);
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BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (void(*)(T))(NULL) ) ));
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typedef typename msvc_extract_type<ID>::id2type::type type;
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};
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template<typename T>
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struct transform_type {
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typedef T type[];
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};
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};
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template<> //Const Pointer
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struct remove_cv_impl_typeof<true,false,true,false> {
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template<typename T,typename ID>
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struct inner {
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template<typename U>
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static msvc_register_type<U,ID> test(void(*)(U const[]));
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static msvc_register_type<T,ID> test(...);
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BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (void(*)(T))(NULL) ) ));
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typedef typename msvc_extract_type<ID>::id2type::type type;
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};
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template<typename T>
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struct transform_type {
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typedef T type[];
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};
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};
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template<> //CV Pointer
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struct remove_cv_impl_typeof<true,false,true,true> {
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template<typename T,typename ID>
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struct inner {
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template<typename U>
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static msvc_register_type<U,ID> test(void(*)(U const volatile[]));
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static msvc_register_type<T,ID> test(...);
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BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (void(*)(T))(NULL) ) ));
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typedef typename msvc_extract_type<ID>::id2type::type type;
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};
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template<typename T>
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struct transform_type {
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typedef T type[];
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};
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};
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template<> //Volatile Array
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struct remove_cv_impl_typeof<false,true,false,true> {
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template<typename T,typename ID>
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struct inner {
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BOOST_STATIC_CONSTANT(unsigned,value=(sizeof(T)/sizeof((*((T*)NULL))[0])));
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template<typename U>
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static msvc_register_type<U[value],ID> test(void(*)(U volatile[]));
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static msvc_register_type<T,ID> test(...);
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BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (void(*)(T))(NULL) ) ));
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typedef typename msvc_extract_type<ID>::id2type::type type;
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};
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template<typename T>
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struct transform_type {
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typedef T type;
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};
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};
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template<> //Const Array
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struct remove_cv_impl_typeof<false,true,true,false> {
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template<typename T,typename ID>
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struct inner {
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BOOST_STATIC_CONSTANT(unsigned,value=(sizeof(T)/sizeof((*((T*)NULL))[0])));
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template<typename U>
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static msvc_register_type<U[value],ID> test(void(*)(U const[]));
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static msvc_register_type<T,ID> test(...);
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BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (void(*)(T))(NULL) ) ));
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typedef typename msvc_extract_type<ID>::id2type::type type;
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};
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template<typename T>
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struct transform_type {
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typedef T type;
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};
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};
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template<> //CV Array
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struct remove_cv_impl_typeof<false,true,true,true> {
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template<typename T,typename ID>
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struct inner {
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BOOST_STATIC_CONSTANT(unsigned,value=(sizeof(T)/sizeof((*((T*)NULL))[0])));
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template<typename U>
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static msvc_register_type<U[value],ID> test(void(*)(U const volatile[]));
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static msvc_register_type<T,ID> test(...);
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BOOST_STATIC_CONSTANT(unsigned,register_test=sizeof(test( (void(*)(T))(NULL) ) ));
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typedef typename msvc_extract_type<ID>::id2type::type type;
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};
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template<typename T>
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struct transform_type {
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typedef T type;
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};
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};
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} //namespace detail
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template<typename T>
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struct remove_cv {
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typedef boost::detail::remove_cv_impl_typeof<
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boost::is_pointer<T>::value,
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boost::is_array<T>::value,
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boost::is_const<T>::value,
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boost::is_volatile<T>::value
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> remove_cv_type;
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typedef typename
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remove_cv_type::template inner<
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typename remove_cv_type::template transform_type<T>::type,
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remove_cv<T>
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>::type
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type;
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BOOST_MPL_AUX_LAMBDA_SUPPORT(1,remove_cv,T)
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};
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}//namespace boost
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#endif //BOOST_TYPE_TRAITS_MSVC_REMOVE_CV_HOLT_2004_0901
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