/usr/include/boost/function_types/detail/to_sequence.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | // (C) Copyright Tobias Schwinger
//
// Use modification and distribution are subject to the boost Software License,
// Version 1.0. (See http://www.boost.org/LICENSE_1_0.txt).
//------------------------------------------------------------------------------
#ifndef BOOST_FT_DETAIL_TO_SEQUENCE_HPP_INCLUDED
#define BOOST_FT_DETAIL_TO_SEQUENCE_HPP_INCLUDED
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/is_sequence.hpp>
#include <boost/mpl/placeholders.hpp>
#include <boost/type_traits/add_reference.hpp>
#include <boost/function_types/is_callable_builtin.hpp>
namespace boost { namespace function_types { namespace detail {
// wrap first arguments in components, if callable builtin type
template<typename T>
struct to_sequence
{
typedef typename
mpl::eval_if
< is_callable_builtin<T>
, to_sequence< components<T> >
, mpl::identity< T >
>::type
type;
};
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
// reduce template instantiations, if possible
template<typename T, typename U>
struct to_sequence< components<T,U> >
{
typedef typename components<T,U>::types type;
};
#endif
} } } // namespace ::boost::function_types::detail
#endif
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