Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for a snapshot of the master branch, built from commit be579b269a.



// Copyright Aleksey Gurtovoy 2000-2004
// Copyright Peter Dimov 2000-2003
// Distributed under the Boost Software License, Version 1.0. 
// (See accompanying file LICENSE_1_0.txt or copy at 
// See for documentation.

// $Id$
// $Date$
// $Revision$

#include <boost/mpl/aux_/config/ctps.hpp>

namespace boost { namespace mpl { namespace aux {

template< typename T > struct type_wrapper
    typedef T type;

// 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;
template< typename W > struct wrapped_type
    typedef typename W::type type;