86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
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#if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
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#include <boost/proto/detail/preprocessed/args.hpp>
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#elif !defined(BOOST_PP_IS_ITERATING)
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/// INTERNAL ONLY
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///
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#define BOOST_PROTO_DEFINE_CHILD_N(Z, N, DATA) \
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typedef BOOST_PP_CAT(Arg, N) BOOST_PP_CAT(child, N); \
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/**< INTERNAL ONLY */
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/// INTERNAL ONLY
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///
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#define BOOST_PROTO_DEFINE_VOID_N(z, n, data) \
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typedef mpl::void_ BOOST_PP_CAT(child, n); \
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/**< INTERNAL ONLY */
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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/args.hpp")
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#endif
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///////////////////////////////////////////////////////////////////////////////
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/// \file args.hpp
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/// Contains definition of \c term\<\>, \c list1\<\>, \c list2\<\>, ...
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/// class templates.
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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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/// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
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///
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/// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
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/// The types in the sequence correspond to the children of a node in an expression tree.
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template< typename Arg0 >
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struct term
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{
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static const long arity = 0;
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typedef Arg0 child0;
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BOOST_PP_REPEAT_FROM_TO(1, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~)
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/// INTERNAL ONLY
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///
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typedef Arg0 back_;
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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/args.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_VOID_N
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#undef BOOST_PROTO_DEFINE_CHILD_N
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#else
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#define N BOOST_PP_ITERATION()
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/// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
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///
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/// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
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/// The types in the sequence correspond to the children of a node in an expression tree.
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template< BOOST_PP_ENUM_PARAMS(N, typename Arg) >
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struct BOOST_PP_CAT(list, N)
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{
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static const long arity = N;
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BOOST_PP_REPEAT(N, BOOST_PROTO_DEFINE_CHILD_N, ~)
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BOOST_PP_REPEAT_FROM_TO(N, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~)
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/// INTERNAL ONLY
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///
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typedef BOOST_PP_CAT(Arg, BOOST_PP_DEC(N)) back_;
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};
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#undef N
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#endif
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