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#if !defined(BOOST_PROTO_DONT_USE_PREPROCESSED_FILES)
#include <boost/proto/detail/preprocessed/deduce_domain_n.hpp>
#elif !defined(BOOST_PP_IS_ITERATING)
#define BOOST_PROTO_COMMON_DOMAIN2(Z, N, DATA) \
typedef \
typename common_domain2<common ## N, A ## N>::type \
BOOST_PP_CAT(common, BOOST_PP_INC(N)); \
/**/
#if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
#pragma wave option(preserve: 2, line: 0, output: "preprocessed/deduce_domain_n.hpp")
#endif
///////////////////////////////////////////////////////////////////////////////
// deduce_domain_n.hpp
// Definitions of common_domain[n] and deduce_domain[n] 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
#define BOOST_PP_ITERATION_PARAMS_1 \
(3, (3, BOOST_PROTO_MAX_ARITY, <boost/proto/detail/deduce_domain_n.hpp>))
#include BOOST_PP_ITERATE()
#if defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES)
#pragma wave option(output: null)
#endif
#undef BOOST_PROTO_COMMON_DOMAIN2
#else
#define N BOOST_PP_ITERATION()
template<BOOST_PP_ENUM_PARAMS(N, typename A)>
struct BOOST_PP_CAT(common_domain, N)
{
typedef A0 common1;
BOOST_PP_REPEAT_FROM_TO(1, N, BOOST_PROTO_COMMON_DOMAIN2, ~)
typedef BOOST_PP_CAT(common, N) type;
BOOST_PROTO_ASSERT_VALID_DOMAIN(type);
};
template<BOOST_PP_ENUM_PARAMS(N, typename E)>
struct BOOST_PP_CAT(deduce_domain, N)
: BOOST_PP_CAT(common_domain, N)<
BOOST_PP_ENUM_BINARY_PARAMS(
N
, typename domain_of<E, >::type BOOST_PP_INTERCEPT
)
>
{};
#undef N
#endif // BOOST_PROTO_DONT_USE_PREPROCESSED_FILES
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Swift