1
2// (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
3// (C) Copyright Eric Friedman 2002-2003.
4// (C) Copyright Antony Polukhin 2013.
5// Use, modification and distribution are subject to the Boost Software License,
6// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
7// http://www.boost.org/LICENSE_1_0.txt).
8//
9// See http://www.boost.org/libs/type_traits for most recent version including documentation.
10
11#ifndef BOOST_TT_HAS_TRIVIAL_MOVE_CONSTRUCTOR_HPP_INCLUDED
12#define BOOST_TT_HAS_TRIVIAL_MOVE_CONSTRUCTOR_HPP_INCLUDED
13
14#include <cstddef> // size_t
15#include <boost/type_traits/intrinsics.hpp>
16#include <boost/type_traits/integral_constant.hpp>
17
18#ifdef BOOST_HAS_TRIVIAL_MOVE_CONSTRUCTOR
19
20#if defined(BOOST_MSVC) || defined(BOOST_INTEL)
21#include <boost/type_traits/is_pod.hpp>
22#include <boost/type_traits/is_volatile.hpp>
23#endif
24
25#if defined(__GNUC__) || defined(__clang)
26#include <boost/type_traits/is_constructible.hpp>
27#include <boost/type_traits/is_volatile.hpp>
28#endif
29
30
31namespace boost {
32
33template <typename T> struct has_trivial_move_constructor : public integral_constant<bool, BOOST_HAS_TRIVIAL_MOVE_CONSTRUCTOR(T)>{};
34
35#else
36
37#ifdef __SUNPRO_CC
38#include <boost/type_traits/is_constructible.hpp>
39#include <boost/type_traits/remove_const.hpp>
40#if __cplusplus >= 201103
41#define SOLARIS_EXTRA_CHECK && is_constructible<typename remove_const<T>::type, typename remove_const<T>::type&&>::value
42#endif
43#endif
44
45#ifndef SOLARIS_EXTRA_CHECK
46#define SOLARIS_EXTRA_CHECK
47#endif
48
49#include <boost/type_traits/is_pod.hpp>
50#include <boost/type_traits/is_volatile.hpp>
51
52namespace boost {
53
54template <typename T> struct has_trivial_move_constructor
55 : public integral_constant<bool, ::boost::is_pod<T>::value && !::boost::is_volatile<T>::value SOLARIS_EXTRA_CHECK>{};
56
57#undef SOLARIS_EXTRA_CHECK
58
59#endif
60
61template <> struct has_trivial_move_constructor<void> : public false_type{};
62#ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
63template <> struct has_trivial_move_constructor<void const> : public false_type{};
64template <> struct has_trivial_move_constructor<void volatile> : public false_type{};
65template <> struct has_trivial_move_constructor<void const volatile> : public false_type{};
66#endif
67// What should we do with reference types??? The standard seems to suggest these are trivial, even if the thing they reference is not:
68template <class T> struct has_trivial_move_constructor<T&> : public true_type{};
69#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
70template <class T> struct has_trivial_move_constructor<T&&> : public true_type{};
71#endif
72// Arrays can not be explicitly copied:
73template <class T, std::size_t N> struct has_trivial_move_constructor<T[N]> : public false_type{};
74template <class T> struct has_trivial_move_constructor<T[]> : public false_type{};
75
76} // namespace boost
77
78#endif // BOOST_TT_HAS_TRIVIAL_MOVE_CONSTRUCTOR_HPP_INCLUDED
79