source: NonGTP/Boost/boost/mpl/aux_/msvc_eti_base.hpp @ 857

Revision 857, 1.8 KB checked in by igarcia, 19 years ago (diff)
Line 
1
2#ifndef BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED
3#define BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED
4
5// Copyright Aleksey Gurtovoy 2001-2004
6//
7// Distributed under the Boost Software License, Version 1.0.
8// (See accompanying file LICENSE_1_0.txt or copy at
9// http://www.boost.org/LICENSE_1_0.txt)
10//
11// See http://www.boost.org/libs/mpl for documentation.
12
13// $Source: /cvsroot/boost/boost/boost/mpl/aux_/msvc_eti_base.hpp,v $
14// $Date: 2004/11/28 01:37:05 $
15// $Revision: 1.7 $
16
17#include <boost/mpl/aux_/is_msvc_eti_arg.hpp>
18#include <boost/mpl/aux_/config/eti.hpp>
19#include <boost/mpl/aux_/config/gcc.hpp>
20#include <boost/mpl/aux_/config/workaround.hpp>
21
22namespace boost { namespace mpl { namespace aux {
23
24#if defined(BOOST_MPL_CFG_MSVC_70_ETI_BUG)
25
26template< bool > struct msvc_eti_base_impl
27{
28    template< typename T > struct result_
29        : T
30    {
31        typedef T type;
32    };
33};
34
35template<> struct msvc_eti_base_impl<true>
36{
37    template< typename T > struct result_
38    {
39        typedef result_ type;
40        typedef result_ first;
41        typedef result_ second;
42        typedef result_ tag;
43        enum { value = 0 };
44    };
45};
46
47template< typename T > struct msvc_eti_base
48    : msvc_eti_base_impl< is_msvc_eti_arg<T>::value >
49        ::template result_<T>
50{
51};
52
53#else // !BOOST_MPL_CFG_MSVC_70_ETI_BUG
54
55template< typename T > struct msvc_eti_base
56    : T
57{
58#if BOOST_WORKAROUND(BOOST_MPL_CFG_GCC, BOOST_TESTED_AT(0x0304))
59    msvc_eti_base();
60#endif
61    typedef T type;
62};
63
64#endif
65
66template<> struct msvc_eti_base<int>
67{
68    typedef msvc_eti_base type;
69    typedef msvc_eti_base first;
70    typedef msvc_eti_base second;
71    typedef msvc_eti_base tag;
72    enum { value = 0 };
73};
74
75}}}
76
77#endif // BOOST_MPL_AUX_MSVC_ETI_BASE_HPP_INCLUDED
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