/usr/include/boost/type_erasure/detail/get_placeholders.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.
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 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | // Boost.TypeErasure library
//
// Copyright 2011 Steven Watanabe
//
// 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)
//
// $Id: get_placeholders.hpp 83248 2013-03-02 18:15:06Z steven_watanabe $
#if !defined(BOOST_PP_IS_ITERATING)
#ifndef BOOST_TYPE_ERASURE_DETAIL_GET_PLACEHOLDERS_HPP_INCLUDED
#define BOOST_TYPE_ERASURE_DETAIL_GET_PLACEHOLDERS_HPP_INCLUDED
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/insert.hpp>
#include <boost/preprocessor/cat.hpp>
#include <boost/preprocessor/iteration/iterate.hpp>
#include <boost/preprocessor/repetition/enum.hpp>
#include <boost/preprocessor/repetition/enum_params.hpp>
#include <boost/preprocessor/repetition/enum_trailing_params.hpp>
#include <boost/type_erasure/config.hpp>
#include <boost/type_erasure/is_placeholder.hpp>
namespace boost {
namespace type_erasure {
namespace detail {
template<class T, class Out>
struct get_placeholders_in_argument
{
typedef typename ::boost::mpl::eval_if<
::boost::type_erasure::is_placeholder<T>,
::boost::mpl::insert<Out, T>,
::boost::mpl::identity<Out>
>::type type;
};
template<class T, class Out>
struct get_placeholders;
template<class T, class Out>
struct get_placeholders_in_argument<T&, Out>
{
typedef typename ::boost::type_erasure::detail::get_placeholders_in_argument<
T,
Out
>::type type;
};
template<class T, class Out>
struct get_placeholders_in_argument<const T, Out>
{
typedef typename ::boost::type_erasure::detail::get_placeholders_in_argument<
T,
Out
>::type type;
};
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
template<class Out, class... T>
struct get_placeholders_impl;
template<class Out, class T0, class... T>
struct get_placeholders_impl<Out, T0, T...>
{
typedef typename ::boost::type_erasure::detail::get_placeholders_in_argument<
T0,
typename get_placeholders_impl<Out, T...>::type
>::type type;
};
template<class Out>
struct get_placeholders_impl<Out>
{
typedef Out type;
};
template<template<class...> class T, class... U, class Out>
struct get_placeholders<T<U...>, Out>
{
typedef typename get_placeholders_impl<Out, U...>::type type;
};
template<class R, class... T, class Out>
struct get_placeholders_in_argument<R(T...), Out>
{
typedef typename ::boost::type_erasure::detail::get_placeholders_in_argument<
R,
Out
>::type type0;
typedef typename get_placeholders_impl<type0, T...>::type type;
};
#else
#define BOOST_PP_FILENAME_1 <boost/type_erasure/detail/get_placeholders.hpp>
#define BOOST_PP_ITERATION_LIMITS (0, BOOST_TYPE_ERASURE_MAX_ARITY)
#include BOOST_PP_ITERATE()
#endif
}
}
}
#endif
#else
#define N BOOST_PP_ITERATION()
#define BOOST_TYPE_ERASURE_GET_PLACEHOLDER(z, n, data) \
typedef typename ::boost::type_erasure::detail::get_placeholders_in_argument< \
BOOST_PP_CAT(data, n), BOOST_PP_CAT(type, n)>::type \
BOOST_PP_CAT(type, BOOST_PP_INC(n));
#if N != 0
template<template<BOOST_PP_ENUM_PARAMS(N, class T)> class T,
BOOST_PP_ENUM_PARAMS(N, class T), class Out>
struct get_placeholders<T<BOOST_PP_ENUM_PARAMS(N, T)>, Out>
{
typedef Out type0;
BOOST_PP_REPEAT(N, BOOST_TYPE_ERASURE_GET_PLACEHOLDER, T)
typedef BOOST_PP_CAT(type, N) type;
};
#endif
template<class R
BOOST_PP_ENUM_TRAILING_PARAMS(N, class T), class Out>
struct get_placeholders_in_argument<R(BOOST_PP_ENUM_PARAMS(N, T)), Out>
{
typedef typename ::boost::type_erasure::detail::get_placeholders_in_argument<
R,
Out
>::type type0;
BOOST_PP_REPEAT(N, BOOST_TYPE_ERASURE_GET_PLACEHOLDER, T)
typedef BOOST_PP_CAT(type, N) type;
};
#undef BOOST_TYPE_ERASURE_GET_PLACEHOLDER
#undef N
#endif
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