1
2#ifndef BOOST_MPL_PROTECT_HPP_INCLUDED
3#define BOOST_MPL_PROTECT_HPP_INCLUDED
4
5// Copyright Peter Dimov 2001
6// Copyright Aleksey Gurtovoy 2002-2004
7//
8// Distributed under the Boost Software License, Version 1.0.
9// (See accompanying file LICENSE_1_0.txt or copy at
10// http://www.boost.org/LICENSE_1_0.txt)
11//
12// See http://www.boost.org/libs/mpl for documentation.
13
14// $Id$
15// $Date$
16// $Revision$
17
18#include <boost/mpl/aux_/arity.hpp>
19#include <boost/mpl/aux_/config/dtp.hpp>
20#include <boost/mpl/aux_/nttp_decl.hpp>
21#include <boost/mpl/aux_/na_spec.hpp>
22
23namespace boost { namespace mpl {
24
25template<
26 typename BOOST_MPL_AUX_NA_PARAM(T)
27 , int not_le_ = 0
28 >
29struct protect : T
30{
31#if BOOST_WORKAROUND(__EDG_VERSION__, == 238)
32 typedef mpl::protect type;
33#else
34 typedef protect type;
35#endif
36};
37
38#if defined(BOOST_MPL_CFG_BROKEN_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
39namespace aux {
40template< BOOST_MPL_AUX_NTTP_DECL(int, N), typename T >
41struct arity< protect<T>, N >
42 : arity<T,N>
43{
44};
45} // namespace aux
46#endif
47
48BOOST_MPL_AUX_NA_SPEC_MAIN(1, protect)
49#if !defined(BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT)
50BOOST_MPL_AUX_NA_SPEC_TEMPLATE_ARITY(1, 1, protect)
51#endif
52
53}}
54
55#endif // BOOST_MPL_PROTECT_HPP_INCLUDED
56