boost/mpl/vector/aux_/numbered_c.hpp

   1
   2 // NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION
   3
   4 #if defined(BOOST_PP_IS_ITERATING)
   5
   6 // Copyright Aleksey Gurtovoy 2000-2004
   7 //
   8 // Distributed under the Boost Software License, Version 1.0.
   9 // (See accompanying file LICENSE_1_0.txt or copy at
  10 // http://www.boost.org/LICENSE_1_0.txt)
  11 //
  12 // See http://www.boost.org/libs/mpl for documentation.
  13
  14 // $Id: numbered_c.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
  15 // $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
  16 // $Revision: 49267 $
  17
  18 #include <boost/preprocessor/enum_params.hpp>
  19 #include <boost/preprocessor/enum_shifted_params.hpp>
  20 #include <boost/preprocessor/comma_if.hpp>
  21 #include <boost/preprocessor/repeat.hpp>
  22 #include <boost/preprocessor/dec.hpp>
  23 #include <boost/preprocessor/cat.hpp>
  24
  25 #define i_ BOOST_PP_FRAME_ITERATION(1)
  26
  27 #if defined(BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES)
  28
  29 #   define AUX778076_VECTOR_TAIL(vector, i_, C) \
  30     BOOST_PP_CAT(BOOST_PP_CAT(vector,i_),_c)<T \
  31           BOOST_PP_COMMA_IF(i_) BOOST_PP_ENUM_PARAMS(i_, C) \
  32         > \
  33     /**/
  34
  35 #if i_ > 0
  36 template<
  37       typename T
  38     , BOOST_PP_ENUM_PARAMS(i_, T C)
  39     >
  40 struct BOOST_PP_CAT(BOOST_PP_CAT(vector,i_),_c)
  41     : v_item<
  42           integral_c<T,BOOST_PP_CAT(C,BOOST_PP_DEC(i_))>
  43         , AUX778076_VECTOR_TAIL(vector,BOOST_PP_DEC(i_),C)
  44         >
  45 {
  46     typedef BOOST_PP_CAT(BOOST_PP_CAT(vector,i_),_c) type;
  47     typedef T value_type;
  48 };
  49 #endif
  50
  51 #   undef AUX778076_VECTOR_TAIL
  52
  53 #else // "brute force" implementation
  54
  55 #   define AUX778076_VECTOR_C_PARAM_FUNC(unused, i_, param) \
  56     BOOST_PP_COMMA_IF(i_) \
  57     integral_c<T,BOOST_PP_CAT(param,i_)> \
  58     /**/
  59
  60 template<
  61       typename T
  62     , BOOST_PP_ENUM_PARAMS(i_, T C)
  63     >
  64 struct BOOST_PP_CAT(BOOST_PP_CAT(vector,i_),_c)
  65     : BOOST_PP_CAT(vector,i_)< BOOST_PP_REPEAT(i_,AUX778076_VECTOR_C_PARAM_FUNC,C) >
  66 {
  67     typedef BOOST_PP_CAT(BOOST_PP_CAT(vector,i_),_c) type;
  68     typedef T value_type;
  69 };
  70
  71 #   undef AUX778076_VECTOR_C_PARAM_FUNC
  72
  73 #endif // BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES
  74
  75 #undef i_
  76
  77 #endif // BOOST_PP_IS_ITERATING