/usr/include/boost/flyweight/hashed_factory.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 | /* Copyright 2006-2009 Joaquin M Lopez Munoz.
* 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/flyweight for library home page.
*/
#ifndef BOOST_FLYWEIGHT_HASHED_FACTORY_HPP
#define BOOST_FLYWEIGHT_HASHED_FACTORY_HPP
#if defined(_MSC_VER)&&(_MSC_VER>=1200)
#pragma once
#endif
#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
#include <boost/flyweight/factory_tag.hpp>
#include <boost/flyweight/hashed_factory_fwd.hpp>
#include <boost/multi_index_container.hpp>
#include <boost/multi_index/identity.hpp>
#include <boost/multi_index/hashed_index.hpp>
#include <boost/mpl/aux_/lambda_support.hpp>
#include <boost/mpl/if.hpp>
/* Flyweight factory based on a hashed container implemented
* with Boost.MultiIndex.
*/
namespace boost{
namespace flyweights{
template<
typename Entry,typename Key,
typename Hash,typename Pred,typename Allocator
>
class hashed_factory_class:public factory_marker
{
struct index_list:
boost::mpl::vector1<
multi_index::hashed_unique<
multi_index::identity<Entry>,
typename boost::mpl::if_<
mpl::is_na<Hash>,
hash<Key>,
Hash
>::type,
typename boost::mpl::if_<
mpl::is_na<Pred>,
std::equal_to<Key>,
Pred
>::type
>
>
{};
typedef multi_index::multi_index_container<
Entry,
index_list,
typename boost::mpl::if_<
mpl::is_na<Allocator>,
std::allocator<Entry>,
Allocator
>::type
> container_type;
public:
typedef const Entry* handle_type;
handle_type insert(const Entry& x)
{
return &*cont.insert(x).first;
}
void erase(handle_type h)
{
cont.erase(cont.iterator_to(*h));
}
static const Entry& entry(handle_type h){return *h;}
private:
container_type cont;
public:
typedef hashed_factory_class type;
BOOST_MPL_AUX_LAMBDA_SUPPORT(
5,hashed_factory_class,(Entry,Key,Hash,Pred,Allocator))
};
/* hashed_factory_class specifier */
template<
typename Hash,typename Pred,typename Allocator
BOOST_FLYWEIGHT_NOT_A_PLACEHOLDER_EXPRESSION_DEF
>
struct hashed_factory:factory_marker
{
template<typename Entry,typename Key>
struct apply:
mpl::apply2<
hashed_factory_class<
boost::mpl::_1,boost::mpl::_2,Hash,Pred,Allocator
>,
Entry,Key
>
{};
};
} /* namespace flyweights */
} /* namespace boost */
#endif
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