51 lines
1.3 KiB
C++
51 lines
1.3 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_TYPETRAITS_MSVC_TYPEOF_HPP
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#define BOOST_TYPETRAITS_MSVC_TYPEOF_HPP
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#include <boost/config.hpp>
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#include <boost/detail/workaround.hpp>
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namespace boost { namespace detail {
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# if BOOST_WORKAROUND(BOOST_MSVC,==1300)
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template<typename ID>
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struct msvc_extract_type
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{
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template<bool>
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struct id2type_impl;
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typedef id2type_impl<true> id2type;
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};
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template<typename T, typename ID>
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struct msvc_register_type : public msvc_extract_type<ID>
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{
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template<>
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struct id2type_impl<true> //VC7.0 specific bugfeature
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{
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typedef T type;
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};
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};
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# else
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template<typename ID>
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struct msvc_extract_type
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{
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struct id2type;
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};
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template<typename T, typename ID>
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struct msvc_register_type : public msvc_extract_type<ID>
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{
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typedef msvc_extract_type<ID> base_type;
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struct base_type::id2type // This uses nice VC6.5 and VC7.1 bugfeature
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{
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typedef T type;
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};
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};
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# endif
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}}
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#endif //BOOST_TYPETRAITS_MSVC_TYPEOF_IMPL_HPP
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