boost/typeof/encode_decode_params.hpp

   1 // Copyright (C) 2005 Arkadiy Vertleyb
   2 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   3 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   4
   5 #ifndef BOOST_TYPEOF_ENCODE_DECODE_PARAMS_HPP_INCLUDED
   6 #define BOOST_TYPEOF_ENCODE_DECODE_PARAMS_HPP_INCLUDED
   7
   8 #include <boost/preprocessor/cat.hpp>
   9 #include <boost/preprocessor/repetition/repeat.hpp>
  10
  11 // Assumes iter0 contains initial iterator
  12
  13 #define BOOST_TYPEOF_DECODE_PARAM(z, n, text)   \
  14     typedef boost::type_of::decode_type<iter##n> decode##n;     \
  15     typedef typename decode##n::type p##n;      \
  16     typedef typename decode##n::iter BOOST_PP_CAT(iter, BOOST_PP_INC(n));
  17
  18 #define BOOST_TYPEOF_DECODE_PARAMS(n)\
  19     BOOST_PP_REPEAT(n, BOOST_TYPEOF_DECODE_PARAM, ~)
  20
  21 // The P0, P1, ... PN are encoded and added to V
  22
  23 #define BOOST_TYPEOF_ENCODE_PARAMS_BEGIN(z, n, text)\
  24     typename boost::type_of::encode_type<
  25
  26 #define BOOST_TYPEOF_ENCODE_PARAMS_END(z, n, text)\
  27     , BOOST_PP_CAT(P, n)>::type
  28
  29 #define BOOST_TYPEOF_ENCODE_PARAMS(n, ID)                   \
  30     BOOST_PP_REPEAT(n, BOOST_TYPEOF_ENCODE_PARAMS_BEGIN, ~) \
  31     typename boost::type_of::push_back<V, boost::mpl::size_t<ID> >::type      \
  32     BOOST_PP_REPEAT(n, BOOST_TYPEOF_ENCODE_PARAMS_END, ~)
  33
  34 #endif//BOOST_TYPEOF_ENCODE_DECODE_PARAMS_HPP_INCLUDED