Chris@16: #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
Chris@16: 
Chris@16:     #include <boost/proto/transform/detail/preprocessed/pack_impl.hpp>
Chris@16: 
Chris@16: #elif !defined(BOOST_PP_IS_ITERATING)
Chris@16: 
Chris@16:     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
Chris@16:         #pragma wave option(preserve: 2, line: 0, output: "preprocessed/pack_impl.hpp")
Chris@16:     #endif
Chris@16: 
Chris@16:     ///////////////////////////////////////////////////////////////////////////////
Chris@16:     /// \file pack_impl.hpp
Chris@16:     /// Contains helpers for pseudo-pack expansion.
Chris@16:     //
Chris@16:     //  Copyright 2012 Eric Niebler. Distributed under the Boost
Chris@16:     //  Software License, Version 1.0. (See accompanying file
Chris@16:     //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16:     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
Chris@16:         #pragma wave option(preserve: 1)
Chris@16:     #endif
Chris@16: 
Chris@16:     #define BOOST_PP_ITERATION_PARAMS_1                                                             \
Chris@16:         (3, (0, BOOST_PP_DEC(BOOST_PROTO_MAX_ARITY), <boost/proto/transform/detail/pack_impl.hpp>))
Chris@16:     #include BOOST_PP_ITERATE()
Chris@16: 
Chris@16:     #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
Chris@16:         #pragma wave option(output: null)
Chris@16:     #endif
Chris@16: 
Chris@16: #else
Chris@16:     #if BOOST_PP_ITERATION_DEPTH() == 1
Chris@16:         #define N BOOST_PP_ITERATION()
Chris@16:         #define M BOOST_PP_SUB(BOOST_PROTO_MAX_ARITY, N)
Chris@16:         #define M0(Z, X, D)  typename expand_pattern_helper<proto::_child_c<X>, Fun>::type
Chris@16: 
Chris@16:         template<typename Fun, typename Cont>
Chris@16:         struct expand_pattern<BOOST_PP_INC(N), Fun, Cont>
Chris@16:           : Cont::template cat<BOOST_PP_ENUM(BOOST_PP_INC(N), M0, ~)>
Chris@16:         {
Chris@16:             BOOST_MPL_ASSERT_MSG(
Chris@16:                 (expand_pattern_helper<proto::_child_c<0>, Fun>::applied::value)
Chris@16:               , NO_PACK_EXPRESSION_FOUND_IN_UNPACKING_PATTERN
Chris@16:               , (Fun)
Chris@16:             );
Chris@16:         };
Chris@16: 
Chris@16:         template<typename Ret BOOST_PP_ENUM_TRAILING_PARAMS(N, typename A)>
Chris@16:         struct BOOST_PP_CAT(expand_pattern_rest_, N)
Chris@16:         {
Chris@16:             template<BOOST_PP_ENUM_PARAMS_WITH_A_DEFAULT(BOOST_PP_INC(M), typename C, void)>
Chris@16:             struct cat;
Chris@16: 
Chris@16:             #define BOOST_PP_ITERATION_PARAMS_2                                                     \
Chris@16:                 (3, (1, M, <boost/proto/transform/detail/pack_impl.hpp>))
Chris@16:             #include BOOST_PP_ITERATE()
Chris@16:         };
Chris@16:         #undef M0
Chris@16:         #undef M
Chris@16:         #undef N
Chris@16:     #else
Chris@16:         #define I BOOST_PP_ITERATION()
Chris@16:         #define J BOOST_PP_RELATIVE_ITERATION(1)
Chris@16:             template<BOOST_PP_ENUM_PARAMS(I, typename C)>
Chris@16:             struct cat<BOOST_PP_ENUM_PARAMS(I, C)>
Chris@16:             {
Chris@16:                 typedef msvc_fun_workaround<Ret(BOOST_PP_ENUM_PARAMS(J, A) BOOST_PP_COMMA_IF(J) BOOST_PP_ENUM_PARAMS(I, C))> type;
Chris@16:             };
Chris@16:         #undef J
Chris@16:         #undef I
Chris@16:     #endif
Chris@16: #endif