1
2#ifndef BOOST_MPL_AUX_ARITY_HPP_INCLUDED
3#define BOOST_MPL_AUX_ARITY_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// $Id$
14// $Date$
15// $Revision$
16
17#include <boost/mpl/aux_/config/dtp.hpp>
18
19#if defined(BOOST_MPL_CFG_BROKEN_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
20
21# include <boost/mpl/aux_/nttp_decl.hpp>
22# include <boost/mpl/aux_/config/static_constant.hpp>
23
24namespace boost { namespace mpl { namespace aux {
25
26// agurt, 15/mar/02: it's possible to implement the template so that it will
27// "just work" and do not require any specialization, but not on the compilers
28// that require the arity workaround in the first place
29template< typename F, BOOST_MPL_AUX_NTTP_DECL(int, N) >
30struct arity
31{
32 BOOST_STATIC_CONSTANT(int, value = N);
33};
34
35}}}
36
37#endif // BOOST_MPL_CFG_BROKEN_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES
38
39#endif // BOOST_MPL_AUX_ARITY_HPP_INCLUDED
40

source code of boost/boost/mpl/aux_/arity.hpp