NS-3 based Named Data Networking (NDN) simulator
ndnSIM: NDN, CCN, CCNx, content centric networks
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functor-hook.h
1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2012 University of California, Los Angeles
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
19  */
20 
21 #ifndef FUNCTOR_HOOK_H_
22 #define FUNCTOR_HOOK_H_
23 
24 #include <boost/intrusive/parent_from_member.hpp>
25 
26 namespace ns3 {
27 namespace ndn {
28 namespace ndnSIM {
29 namespace detail {
30 
31 template<class BaseHook, class ValueType, int N>
33 {
34  typedef typename BaseHook::template index<N>::type hook_type;
35  typedef hook_type* hook_ptr;
36  typedef const hook_type* const_hook_ptr;
37 
38  typedef ValueType value_type;
39  typedef value_type* pointer;
40  typedef const value_type* const_pointer;
41 
42  //Required static functions
43  static hook_ptr to_hook_ptr (value_type &value)
44  { return &value.policy_hook_.template get<N> (); }
45 
46  static const_hook_ptr to_hook_ptr(const value_type &value)
47  { return &value.policy_hook_.template get<N> (); }
48 
49  static pointer to_value_ptr(hook_ptr n)
50  {
51  return
52  boost::intrusive::get_parent_from_member<value_type>
53  (static_cast<BaseHook*> (boost::intrusive::get_parent_from_member< wrap<hook_type> >(n, &wrap<hook_type>::value_)),
54  &value_type::policy_hook_);
55  }
56  static const_pointer to_value_ptr(const_hook_ptr n)
57  {
58  return
59  boost::intrusive::get_parent_from_member<value_type>
60  (static_cast<const BaseHook*> (boost::intrusive::get_parent_from_member< wrap<hook_type> >(n, &wrap<hook_type>::value_)),
61  &value_type::policy_hook_);
62  }
63 };
64 
65 } // detail
66 } // ndnSIM
67 } // ndn
68 } // ns3
69 
70 #endif // FUNCTOR_HOOK_H_