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47 lines
1.8 KiB
47 lines
1.8 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/expand_pack.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/expand_pack.hpp")
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#endif
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///////////////////////////////////////////////////////////////////////////////
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/// \file expand_pack.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_PROTO_MAX_ARITY, <boost/proto/transform/detail/expand_pack.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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#define N BOOST_PP_ITERATION()
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#define M0(Z, X, DATA) typename expand_pattern_helper<Tfx, BOOST_PP_CAT(A, X)>::type
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#define M1(Z, X, DATA) expand_pattern_helper<Tfx, BOOST_PP_CAT(A, X)>::applied::value ||
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template<typename Tfx, typename Ret BOOST_PP_ENUM_TRAILING_PARAMS(N, typename A)>
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struct expand_pattern_helper<Tfx, Ret(BOOST_PP_ENUM_PARAMS(N, A))>
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{
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typedef Ret (*type)(BOOST_PP_ENUM(N, M0, ~));
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typedef mpl::bool_<BOOST_PP_REPEAT(N, M1, ~) false> applied;
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};
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#undef M1
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#undef M0
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#undef N
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#endif
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