43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
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// 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_POINTER_HOLT_2004_0827
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#define BOOST_TYPE_TRAITS_MSVC_REMOVE_POINTER_HOLT_2004_0827
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#include <boost/type_traits/msvc/typeof.hpp>
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#include <boost/type_traits/is_pointer.hpp>
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namespace boost {
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namespace detail {
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template<int IsPointer>
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struct remove_pointer_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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};
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template<>
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struct remove_pointer_impl_typeof<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*);
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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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};
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} //namespace detail
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template<typename T>
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struct remove_pointer {
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typedef typename boost::detail::remove_pointer_impl_typeof<
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boost::is_pointer<T>::value
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>::template inner<T,remove_pointer<T> >::type type;
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BOOST_MPL_AUX_LAMBDA_SUPPORT(1,remove_pointer,T)
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};
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} //namespace boost
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#endif //BOOST_TYPE_TRAITS_REMOVE_POINTER_HOLT_2004_0827
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