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106 lines
3.6 KiB
106 lines
3.6 KiB
3 years ago
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#if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
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#include <boost/proto/detail/preprocessed/make_expr_.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/make_expr_.hpp")
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#endif
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///////////////////////////////////////////////////////////////////////////////
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/// \file make_expr_.hpp
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/// Contains definition of make_expr_\<\> class template.
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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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template<
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typename Tag
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, typename Domain
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BOOST_PP_ENUM_TRAILING_BINARY_PARAMS(
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BOOST_PROTO_MAX_ARITY
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, typename A
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, = void BOOST_PP_INTERCEPT
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)
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, typename _ = void
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>
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struct make_expr_
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{};
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template<typename Domain, typename A>
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struct make_expr_<tag::terminal, Domain, A
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BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PROTO_MAX_ARITY, void BOOST_PP_INTERCEPT)>
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{
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typedef typename proto::detail::protoify<A, Domain>::result_type result_type;
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BOOST_FORCEINLINE
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result_type operator()(typename add_reference<A>::type a) const
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{
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return proto::detail::protoify<A, Domain>()(a);
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}
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};
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template<typename A>
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struct make_expr_<tag::terminal, deduce_domain, A
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BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PROTO_MAX_ARITY, void BOOST_PP_INTERCEPT)>
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: make_expr_<tag::terminal, default_domain, A>
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{};
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#define BOOST_PP_ITERATION_PARAMS_1 \
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(3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/detail/make_expr_.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 // BOOST_PP_IS_ITERATING
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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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template<typename Tag, typename Domain BOOST_PP_ENUM_TRAILING_PARAMS(N, typename A)>
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struct make_expr_<Tag, Domain BOOST_PP_ENUM_TRAILING_PARAMS(N, A)
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BOOST_PP_ENUM_TRAILING_PARAMS(M, void BOOST_PP_INTERCEPT), void>
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{
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typedef
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BOOST_PP_CAT(list, N)<
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BOOST_PP_ENUM(N, BOOST_PROTO_AS_CHILD_TYPE, (A, ~, Domain))
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>
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proto_args;
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typedef typename base_expr<Domain, Tag, proto_args>::type expr_type;
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typedef typename Domain::proto_generator proto_generator;
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typedef typename proto_generator::template result<proto_generator(expr_type)>::type result_type;
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BOOST_FORCEINLINE
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result_type operator()(BOOST_PP_ENUM_BINARY_PARAMS(N, typename add_reference<A, >::type a)) const
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{
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expr_type const that = {
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BOOST_PP_ENUM(N, BOOST_PROTO_AS_CHILD, (A, a, Domain))
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};
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return proto_generator()(that);
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}
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};
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template<typename Tag BOOST_PP_ENUM_TRAILING_PARAMS(N, typename A)>
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struct make_expr_<Tag, deduce_domain BOOST_PP_ENUM_TRAILING_PARAMS(N, A)
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BOOST_PP_ENUM_TRAILING_PARAMS(M, void BOOST_PP_INTERCEPT), void>
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: make_expr_<
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Tag
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, typename BOOST_PP_CAT(deduce_domain, N)<BOOST_PP_ENUM_PARAMS(N, A)>::type
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BOOST_PP_ENUM_TRAILING_PARAMS(N, A)
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>
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{};
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#undef N
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#undef M
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#endif
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