ceph/src/boost/boost/proto/transform/detail/expand_pack.hpp

   1 #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
   2
   3     #include <boost/proto/transform/detail/preprocessed/expand_pack.hpp>
   4
   5 #elif !defined(BOOST_PP_IS_ITERATING)
   6
   7     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
   8         #pragma wave option(preserve: 2, line: 0, output: "preprocessed/expand_pack.hpp")
   9     #endif
  10
  11     ///////////////////////////////////////////////////////////////////////////////
  12     /// \file expand_pack.hpp
  13     /// Contains helpers for pseudo-pack expansion.
  14     //
  15     //  Copyright 2012 Eric Niebler. Distributed under the Boost
  16     //  Software License, Version 1.0. (See accompanying file
  17     //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  18
  19     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
  20         #pragma wave option(preserve: 1)
  21     #endif
  22
  23     #define BOOST_PP_ITERATION_PARAMS_1                                                             \
  24         (3, (0, BOOST_PROTO_MAX_ARITY, <boost/proto/transform/detail/expand_pack.hpp>))
  25     #include BOOST_PP_ITERATE()
  26
  27     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
  28         #pragma wave option(output: null)
  29     #endif
  30
  31 #else
  32     #define N BOOST_PP_ITERATION()
  33     #define M0(Z, X, DATA) typename expand_pattern_helper<Tfx, BOOST_PP_CAT(A, X)>::type
  34     #define M1(Z, X, DATA) expand_pattern_helper<Tfx, BOOST_PP_CAT(A, X)>::applied::value ||
  35
  36         template<typename Tfx, typename Ret BOOST_PP_ENUM_TRAILING_PARAMS(N, typename A)>
  37         struct expand_pattern_helper<Tfx, Ret(BOOST_PP_ENUM_PARAMS(N, A))>
  38         {
  39             typedef Ret (*type)(BOOST_PP_ENUM(N, M0, ~));
  40             typedef mpl::bool_<BOOST_PP_REPEAT(N, M1, ~) false> applied;
  41         };
  42
  43     #undef M1
  44     #undef M0
  45     #undef N
  46 #endif