source: NonGTP/Boost/boost/format/detail/msvc_disambiguater.hpp @ 857

Revision 857, 1.8 KB checked in by igarcia, 19 years ago (diff)
Line 
1// ----------------------------------------------------------------------------
2// msvc_disambiguater.hpp : msvc workarounds. (for put_{head|last} overloads)
3//               the trick was described in boost's list  by Aleksey Gurtovoy
4// ----------------------------------------------------------------------------
5
6//  Copyright Samuel Krempp 2003. Use, modification, and distribution are
7//  subject to the Boost Software License, Version 1.0. (See accompanying
8//  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
9
10// see http://www.boost.org/libs/format for library home page
11
12// ----------------------------------------------------------------------------
13
14#ifndef BOOST_MSVC_DISAMBIGUATER_HPP
15#define BOOST_MSVC_DISAMBIGUATER_HPP
16
17#if BOOST_WORKAROUND( BOOST_MSVC, <= 1300) || \
18    BOOST_WORKAROUND(__DECCXX_VER, BOOST_TESTED_AT(60590042))
19   // this whole header is specifically for msvc up to 7.0
20
21#include <boost/format/group.hpp>
22#include <ostream>
23
24namespace boost {
25namespace io {
26namespace detail {
27
28template< class Ch, class Tr, class T >
29struct disambiguater
30{
31   template< typename U >
32   static void put_head(BOOST_IO_STD basic_ostream<Ch, Tr>& os, group1<U> const& x, long)
33   {
34       os << group_head(x.a1_);
35   }
36   static void put_head(BOOST_IO_STD basic_ostream<Ch, Tr>& os, T const& x, int)
37   {
38   }
39   template< typename U >
40   static void put_last(BOOST_IO_STD basic_ostream<Ch, Tr>& os, group1<U> const& x, long)
41   {
42       os << group_last(x.a1_);
43   }
44   static void put_last(BOOST_IO_STD basic_ostream<Ch, Tr>& os, T const& x, int)
45   {
46     os << x;
47   }
48};
49
50} // namespace detail
51} // namespace io
52} // namespace boost
53
54#endif // -BOOST_MSVC
55
56#endif // -BOOST_MSVC_DISAMBIGUATER_HPP
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