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105 lines
4.3 KiB
105 lines
4.3 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/pass_through_impl.hpp>
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#elif !defined(BOOST_PP_IS_ITERATING)
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#define BOOST_PROTO_DEFINE_TRANSFORM_TYPE(Z, N, DATA) \
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typename Grammar::BOOST_PP_CAT(proto_child, N)::template impl< \
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typename result_of::child_c<Expr, N>::type \
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, State \
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, Data \
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>::result_type \
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/**/
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#define BOOST_PROTO_DEFINE_TRANSFORM(Z, N, DATA) \
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typename Grammar::BOOST_PP_CAT(proto_child, N)::template impl< \
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typename result_of::child_c<Expr, N>::type \
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, State \
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, Data \
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>()( \
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e.proto_base().BOOST_PP_CAT(child, N), s, d \
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) \
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/**/
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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/pass_through_impl.hpp")
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#endif
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///////////////////////////////////////////////////////////////////////////////
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/// \file pass_through_impl.hpp
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///
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/// Specializations of pass_through_impl, used in the implementation of the
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/// pass_through transform.
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//
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// Copyright 2008 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 (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/transform/detail/pass_through_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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#undef BOOST_PROTO_DEFINE_TRANSFORM
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#undef BOOST_PROTO_DEFINE_TRANSFORM_TYPE
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#else
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#define N BOOST_PP_ITERATION()
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template<typename Grammar, typename Domain, typename Expr, typename State, typename Data>
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struct pass_through_impl<Grammar, Domain, Expr, State, Data, N>
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: transform_impl<Expr, State, Data>
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{
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typedef typename pass_through_impl::expr unref_expr;
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typedef
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typename mpl::if_c<
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is_same<Domain, deduce_domain>::value
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, typename unref_expr::proto_domain
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, Domain
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>::type
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result_domain;
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typedef
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typename base_expr<
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result_domain
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, typename unref_expr::proto_tag
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, BOOST_PP_CAT(list, N)<
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BOOST_PP_ENUM(N, BOOST_PROTO_DEFINE_TRANSFORM_TYPE, ~)
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>
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>::type
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expr_type;
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typedef typename result_domain::proto_generator proto_generator;
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typedef typename BOOST_PROTO_RESULT_OF<proto_generator(expr_type)>::type result_type;
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BOOST_FORCEINLINE
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BOOST_PROTO_RETURN_TYPE_STRICT_LOOSE(result_type, result_type const)
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operator ()(
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typename pass_through_impl::expr_param e
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, typename pass_through_impl::state_param s
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, typename pass_through_impl::data_param d
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) const
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{
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expr_type const that = {
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BOOST_PP_ENUM(N, BOOST_PROTO_DEFINE_TRANSFORM, ~)
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};
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// Without this, MSVC complains that "that" is uninitialized,
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// and it actually triggers a runtime check in debug mode when
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// built with VC8.
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detail::ignore_unused(&that);
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return proto_generator()(that);
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}
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};
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#undef N
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#endif
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