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modify type_wrapper for the sake of GCC

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[SVN r18382]
This commit is contained in:
Aleksey Gurtovoy
2003-05-11 10:48:26 +00:00
parent e44d098414
commit b7aa079241
1 changed files with 29 additions and 8 deletions
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37
include/boost/mpl/aux_/type_wrapper.hpp
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@@ -1,9 +1,11 @@
//-----------------------------------------------------------------------------
// boost mpl/aux/type_wrapper.hpp header file #ifndef BOOST_MPL_AUX_TYPE_WRAPPER_HPP_INCLUDED
// See http://www.boost.org for updates, documentation, and revision history. #define BOOST_MPL_AUX_TYPE_WRAPPER_HPP_INCLUDED
//-----------------------------------------------------------------------------
// // + file: boost/mpl/aux_/type_wrapper.hpp
// Copyright (c) 2000-02 // + last modified: 09/may/03
// Copyright (c) 2000-03
// Peter Dimov, Aleksey Gurtovoy // Peter Dimov, Aleksey Gurtovoy
// //
// Permission to use, copy, modify, distribute and sell this software // Permission to use, copy, modify, distribute and sell this software
@@ -13,9 +15,10 @@
// supporting documentation. No representations are made about the // supporting documentation. No representations are made about the
// suitability of this software for any purpose. It is provided "as is" // suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty. // without express or implied warranty.
//
// See http://www.boost.org/libs/mpl for documentation.
#ifndef BOOST_MPL_AUX_TYPE_WRAPPER_HPP_INCLUDED #include "boost/mpl/aux_/config/ctps.hpp"
#define BOOST_MPL_AUX_TYPE_WRAPPER_HPP_INCLUDED
namespace boost { namespace boost {
namespace mpl { namespace mpl {
@@ -26,6 +29,24 @@ template< typename T > struct type_wrapper
typedef T type; typedef T type;
}; };
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
// agurt 08/may/03: a complicated way to extract the wrapped type; need it
// mostly for the sake of GCC (3.2.x), which ICEs if you try to extract the
// nested 'type' from 'type_wrapper<T>' when the latter was the result of a
// 'typeof' expression
template< typename T > struct wrapped_type;
template< typename T > struct wrapped_type< type_wrapper<T> >
{
typedef T type;
};
#else
template< typename W > struct wrapped_type
{
typedef typename W::type type;
};
#endif
} // namespace aux } // namespace aux
} // namespace mpl } // namespace mpl
} // namespace boost } // namespace boost