85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
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// (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes,
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// Howard Hinnant and John Maddock 2000.
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// (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001
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// Use, modification and distribution are subject to the Boost Software License,
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// Version 1.0. (See 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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//
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// See http://www.boost.org/libs/type_traits for most recent version including documentation.
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// Fixed is_pointer, is_reference, is_const, is_volatile, is_same,
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// is_member_pointer based on the Simulated Partial Specialization work
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// of Mat Marcus and Jesse Jones. See http://opensource.adobe.com or
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// http://groups.yahoo.com/group/boost/message/5441
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// Some workarounds in here use ideas suggested from "Generic<Programming>:
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// Mappings between Types and Values"
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// by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html).
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#ifndef BOOST_TT_IS_VOLATILE_HPP_INCLUDED
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#define BOOST_TT_IS_VOLATILE_HPP_INCLUDED
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#include <boost/config.hpp>
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#include <boost/detail/workaround.hpp>
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# include <boost/type_traits/detail/cv_traits_impl.hpp>
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# if BOOST_WORKAROUND(BOOST_MSVC, < 1400)
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# include <boost/type_traits/remove_bounds.hpp>
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# endif
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// should be the last #include
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#include <boost/type_traits/detail/bool_trait_def.hpp>
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namespace boost {
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namespace detail{
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template <class T>
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struct is_volatile_rval_filter
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{
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#if BOOST_WORKAROUND(BOOST_MSVC, < 1400)
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BOOST_STATIC_CONSTANT(bool, value = ::boost::detail::cv_traits_imp<typename boost::remove_bounds<T>::type*>::is_volatile);
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#else
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BOOST_STATIC_CONSTANT(bool, value = ::boost::detail::cv_traits_imp<BOOST_TT_AUX_CV_TRAITS_IMPL_PARAM(T)>::is_volatile);
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#endif
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};
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#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
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//
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// We can't filter out rvalue_references at the same level as
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// references or we get ambiguities from msvc:
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//
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template <class T>
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struct is_volatile_rval_filter<T&&>
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{
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BOOST_STATIC_CONSTANT(bool, value = false);
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};
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#endif
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}
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#if defined( __CODEGEARC__ )
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BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_volatile,T,__is_volatile(T))
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#else
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//* is a type T declared volatile - is_volatile<T>
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BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_volatile,T,::boost::detail::is_volatile_rval_filter<T>::value)
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BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T&,false)
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#if defined(BOOST_ILLEGAL_CV_REFERENCES)
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// these are illegal specialisations; cv-qualifies applied to
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// references have no effect according to [8.3.2p1],
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// C++ Builder requires them though as it treats cv-qualified
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// references as distinct types...
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BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& const,false)
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BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& volatile,false)
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BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& const volatile,false)
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#endif
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#endif
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} // namespace boost
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#include <boost/type_traits/detail/bool_trait_undef.hpp>
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#endif // BOOST_TT_IS_VOLATILE_HPP_INCLUDED
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