source: vendor/nemo/current/NEMOGCM/EXTERNAL/XIOS/extern/boost/include/boost/smart_ptr/detail/sp_convertible.hpp @ 44

Last change on this file since 44 was 44, checked in by cholod, 12 years ago

Load NEMO_TMP into vendor/nemo/current.

File size: 1.7 KB
Line 
1#ifndef BOOST_SMART_PTR_DETAIL_SP_CONVERTIBLE_HPP_INCLUDED
2#define BOOST_SMART_PTR_DETAIL_SP_CONVERTIBLE_HPP_INCLUDED
3
4// MS compatible compilers support #pragma once
5
6#if defined(_MSC_VER) && (_MSC_VER >= 1020)
7# pragma once
8#endif
9
10//  detail/sp_convertible.hpp
11//
12//  Copyright 2008 Peter Dimov
13//
14//  Distributed under the Boost Software License, Version 1.0.
15//  See accompanying file LICENSE_1_0.txt or copy at
16//  http://www.boost.org/LICENSE_1_0.txt
17
18#include <boost/config.hpp>
19
20#if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && defined( BOOST_NO_SFINAE )
21# define BOOST_SP_NO_SP_CONVERTIBLE
22#endif
23
24#if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ < 303 )
25# define BOOST_SP_NO_SP_CONVERTIBLE
26#endif
27
28#if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && defined( __BORLANDC__ ) && ( __BORLANDC__ < 0x630 )
29# define BOOST_SP_NO_SP_CONVERTIBLE
30#endif
31
32#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
33
34namespace boost
35{
36
37namespace detail
38{
39
40template< class Y, class T > struct sp_convertible
41{
42    typedef char (&yes) [1];
43    typedef char (&no)  [2];
44
45    static yes f( T* );
46    static no  f( ... );
47
48    enum _vt { value = sizeof( (f)( static_cast<Y*>(0) ) ) == sizeof(yes) };
49};
50
51struct sp_empty
52{
53};
54
55template< bool > struct sp_enable_if_convertible_impl;
56
57template<> struct sp_enable_if_convertible_impl<true>
58{
59    typedef sp_empty type;
60};
61
62template<> struct sp_enable_if_convertible_impl<false>
63{
64};
65
66template< class Y, class T > struct sp_enable_if_convertible: public sp_enable_if_convertible_impl< sp_convertible< Y, T >::value >
67{
68};
69
70} // namespace detail
71
72} // namespace boost
73
74#endif // !defined( BOOST_SP_NO_SP_CONVERTIBLE )
75
76#endif  // #ifndef BOOST_SMART_PTR_DETAIL_SP_CONVERTIBLE_HPP_INCLUDED
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