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: arity.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ 14 // $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $ 15 // $Revision: 49267 $ 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 24 namespace 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 29 template< typename F, BOOST_MPL_AUX_NTTP_DECL(int, N) > 30 struct 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