boost/mpl/aux_/preprocessor/ext_params.hpp

   1
   2 #ifndef BOOST_MPL_AUX_PREPROCESSOR_EXT_PARAMS_HPP_INCLUDED
   3 #define BOOST_MPL_AUX_PREPROCESSOR_EXT_PARAMS_HPP_INCLUDED
   4
   5 // Copyright Aleksey Gurtovoy 2000-2004
   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: ext_params.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/preprocessor.hpp>
  18
  19 // BOOST_MPL_PP_EXT_PARAMS(2,2,T): <nothing>
  20 // BOOST_MPL_PP_EXT_PARAMS(2,3,T): T2
  21 // BOOST_MPL_PP_EXT_PARAMS(2,4,T): T2, T3
  22 // BOOST_MPL_PP_EXT_PARAMS(2,n,T): T2, T3, .., Tn-1
  23
  24 #if !defined(BOOST_MPL_CFG_NO_OWN_PP_PRIMITIVES)
  25
  26 #   include <boost/mpl/aux_/preprocessor/filter_params.hpp>
  27 #   include <boost/mpl/aux_/preprocessor/sub.hpp>
  28
  29 #   define BOOST_MPL_PP_EXT_PARAMS(i,j,p) \
  30     BOOST_MPL_PP_EXT_PARAMS_DELAY_1(i,BOOST_MPL_PP_SUB(j,i),p) \
  31     /**/
  32
  33 #   define BOOST_MPL_PP_EXT_PARAMS_DELAY_1(i,n,p) \
  34     BOOST_MPL_PP_EXT_PARAMS_DELAY_2(i,n,p) \
  35     /**/
  36
  37 #   define BOOST_MPL_PP_EXT_PARAMS_DELAY_2(i,n,p) \
  38     BOOST_MPL_PP_EXT_PARAMS_##i(n,p) \
  39     /**/
  40
  41 #   define BOOST_MPL_PP_EXT_PARAMS_1(i,p) BOOST_MPL_PP_FILTER_PARAMS_##i(p##1,p##2,p##3,p##4,p##5,p##6,p##7,p##8,p##9)
  42 #   define BOOST_MPL_PP_EXT_PARAMS_2(i,p) BOOST_MPL_PP_FILTER_PARAMS_##i(p##2,p##3,p##4,p##5,p##6,p##7,p##8,p##9,p1)
  43 #   define BOOST_MPL_PP_EXT_PARAMS_3(i,p) BOOST_MPL_PP_FILTER_PARAMS_##i(p##3,p##4,p##5,p##6,p##7,p##8,p##9,p1,p2)
  44 #   define BOOST_MPL_PP_EXT_PARAMS_4(i,p) BOOST_MPL_PP_FILTER_PARAMS_##i(p##4,p##5,p##6,p##7,p##8,p##9,p1,p2,p3)
  45 #   define BOOST_MPL_PP_EXT_PARAMS_5(i,p) BOOST_MPL_PP_FILTER_PARAMS_##i(p##5,p##6,p##7,p##8,p##9,p1,p2,p3,p4)
  46 #   define BOOST_MPL_PP_EXT_PARAMS_6(i,p) BOOST_MPL_PP_FILTER_PARAMS_##i(p##6,p##7,p##8,p##9,p1,p2,p3,p4,p5)
  47 #   define BOOST_MPL_PP_EXT_PARAMS_7(i,p) BOOST_MPL_PP_FILTER_PARAMS_##i(p##7,p##8,p##9,p1,p2,p3,p4,p5,p6)
  48 #   define BOOST_MPL_PP_EXT_PARAMS_8(i,p) BOOST_MPL_PP_FILTER_PARAMS_##i(p##8,p##9,p1,p2,p3,p4,p5,p6,p7)
  49 #   define BOOST_MPL_PP_EXT_PARAMS_9(i,p) BOOST_MPL_PP_FILTER_PARAMS_##i(p##9,p1,p2,p3,p4,p5,p6,p7,p8)
  50
  51 #else
  52
  53 #   include <boost/preprocessor/arithmetic/add.hpp>
  54 #   include <boost/preprocessor/arithmetic/sub.hpp>
  55 #   include <boost/preprocessor/comma_if.hpp>
  56 #   include <boost/preprocessor/repeat.hpp>
  57 #   include <boost/preprocessor/tuple/elem.hpp>
  58 #   include <boost/preprocessor/cat.hpp>
  59
  60 #   define BOOST_MPL_PP_AUX_EXT_PARAM_FUNC(unused, i, op) \
  61     BOOST_PP_COMMA_IF(i) \
  62     BOOST_PP_CAT( \
  63           BOOST_PP_TUPLE_ELEM(2,1,op) \
  64         , BOOST_PP_ADD_D(1, i, BOOST_PP_TUPLE_ELEM(2,0,op)) \
  65         ) \
  66     /**/
  67
  68 #   define BOOST_MPL_PP_EXT_PARAMS(i, j, param) \
  69     BOOST_PP_REPEAT( \
  70           BOOST_PP_SUB_D(1,j,i) \
  71         , BOOST_MPL_PP_AUX_EXT_PARAM_FUNC \
  72         , (i,param) \
  73         ) \
  74     /**/
  75
  76 #endif
  77
  78 #endif // BOOST_MPL_AUX_PREPROCESSOR_EXT_PARAMS_HPP_INCLUDED