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- #if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
- #include <boost/proto/detail/preprocessed/args.hpp>
- #elif !defined(BOOST_PP_IS_ITERATING)
- /// INTERNAL ONLY
- ///
- #define BOOST_PROTO_DEFINE_CHILD_N(Z, N, DATA) \
- typedef BOOST_PP_CAT(Arg, N) BOOST_PP_CAT(child, N); \
- /**< INTERNAL ONLY */
- /// INTERNAL ONLY
- ///
- #define BOOST_PROTO_DEFINE_VOID_N(z, n, data) \
- typedef mpl::void_ BOOST_PP_CAT(child, n); \
- /**< INTERNAL ONLY */
- #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
- #pragma wave option(preserve: 2, line: 0, output: "preprocessed/args.hpp")
- #endif
- ///////////////////////////////////////////////////////////////////////////////
- /// \file args.hpp
- /// Contains definition of \c term\<\>, \c list1\<\>, \c list2\<\>, ...
- /// class templates.
- //
- // Copyright 2008 Eric Niebler. Distributed under the Boost
- // Software License, Version 1.0. (See accompanying file
- // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
- #pragma wave option(preserve: 1)
- #endif
- /// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
- ///
- /// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
- /// The types in the sequence correspond to the children of a node in an expression tree.
- template< typename Arg0 >
- struct term
- {
- static const long arity = 0;
- typedef Arg0 child0;
- BOOST_PP_REPEAT_FROM_TO(1, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~)
- /// INTERNAL ONLY
- ///
- typedef Arg0 back_;
- };
- #define BOOST_PP_ITERATION_PARAMS_1 \
- (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/detail/args.hpp>))
- #include BOOST_PP_ITERATE()
- #if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
- #pragma wave option(output: null)
- #endif
- #undef BOOST_PROTO_DEFINE_VOID_N
- #undef BOOST_PROTO_DEFINE_CHILD_N
- #else
- #define N BOOST_PP_ITERATION()
- /// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
- ///
- /// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
- /// The types in the sequence correspond to the children of a node in an expression tree.
- template< BOOST_PP_ENUM_PARAMS(N, typename Arg) >
- struct BOOST_PP_CAT(list, N)
- {
- static const long arity = N;
- BOOST_PP_REPEAT(N, BOOST_PROTO_DEFINE_CHILD_N, ~)
- BOOST_PP_REPEAT_FROM_TO(N, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~)
- /// INTERNAL ONLY
- ///
- typedef BOOST_PP_CAT(Arg, BOOST_PP_DEC(N)) back_;
- };
- #undef N
- #endif
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