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