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      1 
      2 #ifndef BOOST_MPL_AUX_ARITY_SPEC_HPP_INCLUDED
      3 #define BOOST_MPL_AUX_ARITY_SPEC_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_spec.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/int.hpp>
     18 #include <boost/mpl/limits/arity.hpp>
     19 #include <boost/mpl/aux_/config/dtp.hpp>
     20 #include <boost/mpl/aux_/preprocessor/params.hpp>
     21 #include <boost/mpl/aux_/arity.hpp>
     22 #include <boost/mpl/aux_/template_arity_fwd.hpp>
     23 #include <boost/mpl/aux_/config/ttp.hpp>
     24 #include <boost/mpl/aux_/config/lambda.hpp>
     25 #include <boost/mpl/aux_/config/static_constant.hpp>
     26 
     27 #if defined(BOOST_MPL_CFG_BROKEN_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
     28 #   define BOOST_MPL_AUX_NONTYPE_ARITY_SPEC(i,type,name) \
     29 namespace aux { \
     30 template< BOOST_MPL_AUX_NTTP_DECL(int, N), BOOST_MPL_PP_PARAMS(i,type T) > \
     31 struct arity< \
     32       name< BOOST_MPL_PP_PARAMS(i,T) > \
     33     , N \
     34     > \
     35 { \
     36     BOOST_STATIC_CONSTANT(int \
     37         , value = BOOST_MPL_LIMIT_METAFUNCTION_ARITY \
     38         ); \
     39 }; \
     40 } \
     41 /**/
     42 #else
     43 #   define BOOST_MPL_AUX_NONTYPE_ARITY_SPEC(i,type,name) /**/
     44 #endif
     45 
     46 #   define BOOST_MPL_AUX_ARITY_SPEC(i,name) \
     47     BOOST_MPL_AUX_NONTYPE_ARITY_SPEC(i,typename,name) \
     48 /**/
     49 
     50 
     51 #if defined(BOOST_MPL_CFG_EXTENDED_TEMPLATE_PARAMETERS_MATCHING) \
     52     && !defined(BOOST_MPL_CFG_NO_FULL_LAMBDA_SUPPORT)
     53 #   define BOOST_MPL_AUX_TEMPLATE_ARITY_SPEC(i, name) \
     54 namespace aux { \
     55 template< BOOST_MPL_PP_PARAMS(i,typename T) > \
     56 struct template_arity< name<BOOST_MPL_PP_PARAMS(i,T)> > \
     57     : int_<i> \
     58 { \
     59 }; \
     60 } \
     61 /**/
     62 #else
     63 #   define BOOST_MPL_AUX_TEMPLATE_ARITY_SPEC(i, name) /**/
     64 #endif
     65 
     66 
     67 #endif // BOOST_MPL_AUX_ARITY_SPEC_HPP_INCLUDED
     68