95 lines
3.7 KiB
C++
95 lines
3.7 KiB
C++
#if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
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#include <boost/proto/detail/preprocessed/and_n.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/and_n.hpp")
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#endif
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///////////////////////////////////////////////////////////////////////////////
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/// \file and_n.hpp
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/// Definitions of and_N, and_impl
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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 \
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(3, (2, BOOST_PP_MAX(BOOST_PROTO_MAX_ARITY, BOOST_PROTO_MAX_LOGICAL_ARITY), <boost/proto/detail/and_n.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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// Assymetry here between the handling of and_N and or_N because
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// and_N is used by lambda_matches up to BOOST_PROTO_MAX_ARITY,
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// regardless of how low BOOST_PROTO_MAX_LOGICAL_ARITY is.
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template<bool B, BOOST_PP_ENUM_PARAMS(BOOST_PP_DEC(N), typename P)>
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struct BOOST_PP_CAT(and_, N)
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#if 2 == N
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: mpl::bool_<P0::value>
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{};
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#else
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: BOOST_PP_CAT(and_, BOOST_PP_DEC(N))<
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P0::value BOOST_PP_COMMA_IF(BOOST_PP_SUB(N,2))
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BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_DEC(N), P)
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>
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{};
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#endif
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template<BOOST_PP_ENUM_PARAMS(BOOST_PP_DEC(N), typename P)>
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struct BOOST_PP_CAT(and_, N)<false, BOOST_PP_ENUM_PARAMS(BOOST_PP_DEC(N), P)>
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: mpl::false_
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{};
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#if N <= BOOST_PROTO_MAX_LOGICAL_ARITY
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template<BOOST_PP_ENUM_PARAMS(N, typename G), typename Expr, typename State, typename Data>
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struct _and_impl<proto::and_<BOOST_PP_ENUM_PARAMS(N, G)>, Expr, State, Data>
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: proto::transform_impl<Expr, State, Data>
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{
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#define M0(Z, N, DATA) \
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typedef \
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typename proto::when<proto::_, BOOST_PP_CAT(G, N)> \
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::template impl<Expr, State, Data> \
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BOOST_PP_CAT(Gimpl, N); \
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/**/
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BOOST_PP_REPEAT(N, M0, ~)
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#undef M0
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typedef typename BOOST_PP_CAT(Gimpl, BOOST_PP_DEC(N))::result_type result_type;
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result_type operator()(
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typename _and_impl::expr_param e
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, typename _and_impl::state_param s
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, typename _and_impl::data_param d
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) const
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{
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// Fix: jfalcou - 12/29/2010
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// Avoid the use of comma operator here so as not to find Proto's
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// by accident.
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// expands to G0()(e,s,d); G1()(e,s,d); ... G{N-1}()(e,s,d);
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#define M0(Z,N,DATA) BOOST_PP_CAT(Gimpl,N)()(e,s,d);
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BOOST_PP_REPEAT(BOOST_PP_DEC(N),M0,~)
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return BOOST_PP_CAT(Gimpl,BOOST_PP_DEC(N))()(e,s,d);
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#undef M0
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}
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};
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#endif
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#undef N
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#endif
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