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Diffstat (limited to '3rdParty/Boost/boost/type_traits/is_reference.hpp')
-rw-r--r-- | 3rdParty/Boost/boost/type_traits/is_reference.hpp | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/type_traits/is_reference.hpp b/3rdParty/Boost/boost/type_traits/is_reference.hpp new file mode 100644 index 0000000..dcf84db --- /dev/null +++ b/3rdParty/Boost/boost/type_traits/is_reference.hpp @@ -0,0 +1,118 @@ + +// (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes, +// Howard Hinnant and John Maddock 2000. +// (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001 + +// Use, modification and distribution are subject to the Boost Software License, +// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at +// http://www.boost.org/LICENSE_1_0.txt). +// +// See http://www.boost.org/libs/type_traits for most recent version including documentation. + +// Fixed is_pointer, is_reference, is_const, is_volatile, is_same, +// is_member_pointer based on the Simulated Partial Specialization work +// of Mat Marcus and Jesse Jones. See http://opensource.adobe.com or +// http://groups.yahoo.com/group/boost/message/5441 +// Some workarounds in here use ideas suggested from "Generic<Programming>: +// Mappings between Types and Values" +// by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html). + + +#ifndef BOOST_TT_IS_REFERENCE_HPP_INCLUDED +#define BOOST_TT_IS_REFERENCE_HPP_INCLUDED + +#include <boost/type_traits/config.hpp> + +#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION +# include <boost/type_traits/detail/yes_no_type.hpp> +# include <boost/type_traits/detail/wrap.hpp> +#endif + +// should be the last #include +#include <boost/type_traits/detail/bool_trait_def.hpp> + +namespace boost { + +#if defined( __CODEGEARC__ ) +BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_reference,T,__is_reference(T)) +#elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) + +BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_reference,T,false) +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_reference,T&,true) + +#if defined(BOOST_ILLEGAL_CV_REFERENCES) +// these are illegal specialisations; cv-qualifies applied to +// references have no effect according to [8.3.2p1], +// C++ Builder requires them though as it treats cv-qualified +// references as distinct types... +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_reference,T& const,true) +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_reference,T& volatile,true) +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_reference,T& const volatile,true) +#endif + +#if defined(__GNUC__) && (__GNUC__ < 3) +// these allow us to work around illegally cv-qualified reference +// types. +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_reference,T const ,::boost::is_reference<T>::value) +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_reference,T volatile ,::boost::is_reference<T>::value) +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_reference,T const volatile ,::boost::is_reference<T>::value) +// However, the above specializations confuse gcc 2.96 unless we also +// supply these specializations for array types +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,unsigned long N,is_reference,T[N],false) +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,unsigned long N,is_reference,const T[N],false) +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,unsigned long N,is_reference,volatile T[N],false) +BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(typename T,unsigned long N,is_reference,const volatile T[N],false) +#endif + +#else + +#ifdef BOOST_MSVC +# pragma warning(push) +# pragma warning(disable: 4181 4097) +#endif + +namespace detail { + +using ::boost::type_traits::yes_type; +using ::boost::type_traits::no_type; +using ::boost::type_traits::wrap; + +template <class T> T&(* is_reference_helper1(wrap<T>) )(wrap<T>); +char is_reference_helper1(...); + +template <class T> no_type is_reference_helper2(T&(*)(wrap<T>)); +yes_type is_reference_helper2(...); + +template <typename T> +struct is_reference_impl +{ + BOOST_STATIC_CONSTANT( + bool, value = sizeof( + ::boost::detail::is_reference_helper2( + ::boost::detail::is_reference_helper1(::boost::type_traits::wrap<T>()))) == 1 + ); +}; + +BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_reference,void,false) +#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS +BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_reference,void const,false) +BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_reference,void volatile,false) +BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(is_reference,void const volatile,false) +#endif + +} // namespace detail + +BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_reference,T,::boost::detail::is_reference_impl<T>::value) + +#ifdef BOOST_MSVC +# pragma warning(pop) +#endif + +#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION + +} // namespace boost + +#include <boost/type_traits/detail/bool_trait_undef.hpp> + +#endif // BOOST_TT_IS_REFERENCE_HPP_INCLUDED + |