boost/mpl/aux_/arity_spec.hpp

   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