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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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Swift