1
2// (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes,
3// Howard Hinnant and John Maddock 2000.
4// (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001
5
6// Use, modification and distribution are subject to the Boost Software License,
7// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
8// http://www.boost.org/LICENSE_1_0.txt).
9//
10// See http://www.boost.org/libs/type_traits for most recent version including documentation.
11
12// Fixed is_pointer, is_reference, is_const, is_volatile, is_same,
13// is_member_pointer based on the Simulated Partial Specialization work
14// of Mat Marcus and Jesse Jones. See http://opensource.adobe.com or
15// http://groups.yahoo.com/group/boost/message/5441
16// Some workarounds in here use ideas suggested from "Generic<Programming>:
17// Mappings between Types and Values"
18// by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html).
19
20
21#ifndef BOOST_TT_IS_VOLATILE_HPP_INCLUDED
22#define BOOST_TT_IS_VOLATILE_HPP_INCLUDED
23
24#include <boost/config.hpp>
25#include <boost/detail/workaround.hpp>
26
27# include <boost/type_traits/detail/cv_traits_impl.hpp>
28# if BOOST_WORKAROUND(BOOST_MSVC, < 1400)
29# include <boost/type_traits/remove_bounds.hpp>
30# endif
31
32// should be the last #include
33#include <boost/type_traits/detail/bool_trait_def.hpp>
34
35namespace boost {
36
37namespace detail{
38template <class T>
39struct is_volatile_rval_filter
40{
41#if BOOST_WORKAROUND(BOOST_MSVC, < 1400)
42 BOOST_STATIC_CONSTANT(bool, value = ::boost::detail::cv_traits_imp<typename boost::remove_bounds<T>::type*>::is_volatile);
43#else
44 BOOST_STATIC_CONSTANT(bool, value = ::boost::detail::cv_traits_imp<BOOST_TT_AUX_CV_TRAITS_IMPL_PARAM(T)>::is_volatile);
45#endif
46};
47#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
48//
49// We can't filter out rvalue_references at the same level as
50// references or we get ambiguities from msvc:
51//
52template <class T>
53struct is_volatile_rval_filter<T&&>
54{
55 BOOST_STATIC_CONSTANT(bool, value = false);
56};
57#endif
58}
59
60#if defined( __CODEGEARC__ )
61BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_volatile,T,__is_volatile(T))
62#else
63
64//* is a type T declared volatile - is_volatile<T>
65BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_volatile,T,::boost::detail::is_volatile_rval_filter<T>::value)
66BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T&,false)
67
68#if defined(BOOST_ILLEGAL_CV_REFERENCES)
69// these are illegal specialisations; cv-qualifies applied to
70// references have no effect according to [8.3.2p1],
71// C++ Builder requires them though as it treats cv-qualified
72// references as distinct types...
73BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& const,false)
74BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& volatile,false)
75BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_volatile,T& const volatile,false)
76#endif
77
78#endif
79
80} // namespace boost
81
82#include <boost/type_traits/detail/bool_trait_undef.hpp>
83
84#endif // BOOST_TT_IS_VOLATILE_HPP_INCLUDED
85