/usr/include/boost/mpl/unpack_args.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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///// header body
#ifndef BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
#define BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2002-2004
//
// 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)
//
// See http://www.boost.org/libs/mpl for documentation.
// $Id: unpack_args.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
// $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
// $Revision: 49267 $
#if !defined(BOOST_MPL_PREPROCESSING_MODE)
# include <boost/mpl/apply.hpp>
# include <boost/mpl/at.hpp>
# include <boost/mpl/size.hpp>
# include <boost/mpl/aux_/nttp_decl.hpp>
# include <boost/mpl/aux_/lambda_spec.hpp>
#endif
#include <boost/mpl/aux_/config/use_preprocessed.hpp>
#if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \
&& !defined(BOOST_MPL_PREPROCESSING_MODE)
# define BOOST_MPL_PREPROCESSED_HEADER unpack_args.hpp
# include <boost/mpl/aux_/include_preprocessed.hpp>
#else
# include <boost/mpl/limits/arity.hpp>
# include <boost/mpl/aux_/preprocessor/repeat.hpp>
# include <boost/mpl/aux_/config/ctps.hpp>
# include <boost/mpl/aux_/config/forwarding.hpp>
# include <boost/preprocessor/iterate.hpp>
# include <boost/preprocessor/cat.hpp>
namespace boost { namespace mpl {
// local macros, #undef-ined at the end of the header
# define AUX778076_UNPACK(unused, i, Args) \
, typename at_c<Args,i>::type \
/**/
# define AUX778076_UNPACKED_ARGS(n, Args) \
BOOST_MPL_PP_REPEAT(n, AUX778076_UNPACK, Args) \
/**/
namespace aux {
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
template< int size, typename F, typename Args >
struct unpack_args_impl;
#else
template< BOOST_MPL_AUX_NTTP_DECL(int, size) > struct unpack_args_impl
{
template< typename F, typename Args > struct apply;
};
#endif
#define BOOST_PP_ITERATION_PARAMS_1 \
(3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/unpack_args.hpp>))
#include BOOST_PP_ITERATE()
}
template<
typename F
>
struct unpack_args
{
template< typename Args > struct apply
#if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)
# if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
: aux::unpack_args_impl< size<Args>::value,F,Args >
# else
: aux::unpack_args_impl< size<Args>::value >
::template apply< F,Args >
# endif
{
#else // BOOST_MPL_CFG_NO_NESTED_FORWARDING
{
typedef typename aux::unpack_args_impl<
size<Args>::value
, F
, Args
>::type type;
#endif
};
};
BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(1, unpack_args)
# undef AUX778076_UNPACK
# undef AUX778076_UNPACKED_ARGS
}}
#endif // BOOST_MPL_CFG_USE_PREPROCESSED_HEADERS
#endif // BOOST_MPL_UNPACK_ARGS_HPP_INCLUDED
///// iteration, depth == 1
// For gcc 4.4 compatability, we must include the
// BOOST_PP_ITERATION_DEPTH test inside an #else clause.
#else // BOOST_PP_IS_ITERATING
#if BOOST_PP_ITERATION_DEPTH() == 1
# define i_ BOOST_PP_FRAME_ITERATION(1)
#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
template< typename F, typename Args >
struct unpack_args_impl<i_,F,Args>
: BOOST_PP_CAT(apply,i_)<
F
AUX778076_UNPACKED_ARGS(i_, Args)
>
{
};
#else
template<> struct unpack_args_impl<i_>
{
template< typename F, typename Args > struct apply
: BOOST_PP_CAT(apply,i_)<
F
AUX778076_UNPACKED_ARGS(i_, Args)
>
{
};
};
#endif
# undef i_
#endif // BOOST_PP_ITERATION_DEPTH()
#endif // BOOST_PP_IS_ITERATING
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