Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 1 | /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */ |
| 2 | /* |
| 3 | * Copyright (c) 2011 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 | |
Alexander Afanasyev | 9a98970 | 2012-06-29 17:44:00 -0700 | [diff] [blame] | 21 | #ifndef TRIE_H_ |
| 22 | #define TRIE_H_ |
| 23 | |
| 24 | #include "ns3/ptr.h" |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 25 | |
| 26 | #include <boost/intrusive/unordered_set.hpp> |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 27 | #include <boost/intrusive/list.hpp> |
Alexander Afanasyev | 9a98970 | 2012-06-29 17:44:00 -0700 | [diff] [blame] | 28 | #include <boost/intrusive/set.hpp> |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 29 | #include <boost/functional/hash.hpp> |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 30 | #include <boost/interprocess/smart_ptr/unique_ptr.hpp> |
| 31 | #include <boost/tuple/tuple.hpp> |
Alexander Afanasyev | 78057c3 | 2012-07-06 15:18:46 -0700 | [diff] [blame] | 32 | #include <boost/foreach.hpp> |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 33 | #include <boost/mpl/if.hpp> |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 34 | |
Alexander Afanasyev | 2b4c947 | 2012-08-09 15:00:38 -0700 | [diff] [blame] | 35 | namespace ns3 { |
| 36 | namespace ndn { |
| 37 | namespace ndnSIM { |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 38 | |
| 39 | ///////////////////////////////////////////////////// |
| 40 | // Allow customization for payload |
| 41 | // |
Alexander Afanasyev | 8566f45 | 2012-12-10 15:21:51 -0800 | [diff] [blame] | 42 | template<typename Payload, typename BasePayload = Payload> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 43 | struct pointer_payload_traits { |
| 44 | typedef Payload payload_type; // general type of the payload |
| 45 | typedef Payload* storage_type; // how the payload is actually stored |
| 46 | typedef Payload* insert_type; // what parameter is inserted |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 47 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 48 | typedef Payload* return_type; // what is returned on access |
| 49 | typedef const Payload* const_return_type; // what is returned on const access |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 50 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 51 | typedef BasePayload* |
| 52 | base_type; // base type of the entry (when implementation details need to be hidden) |
| 53 | typedef const BasePayload* |
| 54 | const_base_type; // const base type of the entry (when implementation details need to be hidden) |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 55 | |
Alexander Afanasyev | 78057c3 | 2012-07-06 15:18:46 -0700 | [diff] [blame] | 56 | static Payload* empty_payload; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 57 | }; |
| 58 | |
Alexander Afanasyev | 8566f45 | 2012-12-10 15:21:51 -0800 | [diff] [blame] | 59 | template<typename Payload, typename BasePayload> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 60 | Payload* pointer_payload_traits<Payload, BasePayload>::empty_payload = 0; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 61 | |
Alexander Afanasyev | 8566f45 | 2012-12-10 15:21:51 -0800 | [diff] [blame] | 62 | template<typename Payload, typename BasePayload = Payload> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 63 | struct smart_pointer_payload_traits { |
| 64 | typedef Payload payload_type; |
| 65 | typedef ns3::Ptr<Payload> storage_type; |
| 66 | typedef ns3::Ptr<Payload> insert_type; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 67 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 68 | typedef ns3::Ptr<Payload> return_type; |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 69 | typedef ns3::Ptr<const Payload> const_return_type; |
Alexander Afanasyev | 8566f45 | 2012-12-10 15:21:51 -0800 | [diff] [blame] | 70 | |
| 71 | typedef ns3::Ptr<BasePayload> base_type; |
| 72 | typedef ns3::Ptr<const BasePayload> const_base_type; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 73 | |
Alexander Afanasyev | 78057c3 | 2012-07-06 15:18:46 -0700 | [diff] [blame] | 74 | static ns3::Ptr<Payload> empty_payload; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 75 | }; |
| 76 | |
Alexander Afanasyev | 8566f45 | 2012-12-10 15:21:51 -0800 | [diff] [blame] | 77 | template<typename Payload, typename BasePayload> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 78 | ns3::Ptr<Payload> smart_pointer_payload_traits<Payload, BasePayload>::empty_payload = 0; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 79 | |
Alexander Afanasyev | 8566f45 | 2012-12-10 15:21:51 -0800 | [diff] [blame] | 80 | template<typename Payload, typename BasePayload = Payload> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 81 | struct non_pointer_traits { |
| 82 | typedef Payload payload_type; |
| 83 | typedef Payload storage_type; |
| 84 | typedef const Payload& insert_type; // nothing to insert |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 85 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 86 | typedef Payload& return_type; |
| 87 | typedef const Payload& const_return_type; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 88 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 89 | typedef BasePayload& base_type; |
Alexander Afanasyev | 62304f2 | 2012-12-10 18:06:21 -0800 | [diff] [blame] | 90 | typedef const BasePayload& const_base_type; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 91 | |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 92 | static Payload empty_payload; |
| 93 | }; |
| 94 | |
Alexander Afanasyev | 8566f45 | 2012-12-10 15:21:51 -0800 | [diff] [blame] | 95 | template<typename Payload, typename BasePayload> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 96 | Payload non_pointer_traits<Payload, BasePayload>::empty_payload = Payload(); |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 97 | |
| 98 | //////////////////////////////////////////////////// |
| 99 | // forward declarations |
| 100 | // |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 101 | template<typename FullKey, typename PayloadTraits, typename PolicyHook> |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 102 | class trie; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 103 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 104 | template<typename FullKey, typename PayloadTraits, typename PolicyHook> |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 105 | inline std::ostream& |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 106 | operator<<(std::ostream& os, const trie<FullKey, PayloadTraits, PolicyHook>& trie_node); |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 107 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 108 | template<typename FullKey, typename PayloadTraits, typename PolicyHook> |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 109 | bool |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 110 | operator==(const trie<FullKey, PayloadTraits, PolicyHook>& a, |
| 111 | const trie<FullKey, PayloadTraits, PolicyHook>& b); |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 112 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 113 | template<typename FullKey, typename PayloadTraits, typename PolicyHook> |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 114 | std::size_t |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 115 | hash_value(const trie<FullKey, PayloadTraits, PolicyHook>& trie_node); |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 116 | |
| 117 | /////////////////////////////////////////////////// |
| 118 | // actual definition |
| 119 | // |
Alexander Afanasyev | 1cb4aad | 2012-08-09 14:58:16 -0700 | [diff] [blame] | 120 | template<class T, class NonConstT> |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 121 | class trie_iterator; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 122 | |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 123 | template<class T> |
| 124 | class trie_point_iterator; |
| 125 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 126 | template<typename FullKey, typename PayloadTraits, typename PolicyHook> |
| 127 | class trie { |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 128 | public: |
| 129 | typedef typename FullKey::partial_type Key; |
| 130 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 131 | typedef trie* iterator; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 132 | typedef const trie* const_iterator; |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 133 | |
Alexander Afanasyev | 1cb4aad | 2012-08-09 14:58:16 -0700 | [diff] [blame] | 134 | typedef trie_iterator<trie, trie> recursive_iterator; |
| 135 | typedef trie_iterator<const trie, trie> const_recursive_iterator; |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 136 | |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 137 | typedef trie_point_iterator<trie> point_iterator; |
| 138 | typedef trie_point_iterator<const trie> const_point_iterator; |
| 139 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 140 | typedef PayloadTraits payload_traits; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 141 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 142 | inline trie(const Key& key, size_t bucketSize = 1, size_t bucketIncrement = 1) |
| 143 | : key_(key) |
| 144 | , initialBucketSize_(bucketSize) |
| 145 | , bucketIncrement_(bucketIncrement) |
| 146 | , bucketSize_(initialBucketSize_) |
| 147 | , buckets_(new bucket_type[bucketSize_]) // cannot use normal pointer, because lifetime of |
| 148 | // buckets should be larger than lifetime of the |
| 149 | // container |
| 150 | , children_(bucket_traits(buckets_.get(), bucketSize_)) |
| 151 | , payload_(PayloadTraits::empty_payload) |
| 152 | , parent_(0) |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 153 | { |
| 154 | } |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 155 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 156 | inline ~trie() |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 157 | { |
| 158 | payload_ = PayloadTraits::empty_payload; // necessary for smart pointers... |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 159 | children_.clear_and_dispose(trie_delete_disposer()); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 160 | } |
Alexander Afanasyev | 78057c3 | 2012-07-06 15:18:46 -0700 | [diff] [blame] | 161 | |
| 162 | void |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 163 | clear() |
Alexander Afanasyev | 78057c3 | 2012-07-06 15:18:46 -0700 | [diff] [blame] | 164 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 165 | children_.clear_and_dispose(trie_delete_disposer()); |
Alexander Afanasyev | 78057c3 | 2012-07-06 15:18:46 -0700 | [diff] [blame] | 166 | } |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 167 | |
| 168 | template<class Predicate> |
| 169 | void |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 170 | clear_if(Predicate cond) |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 171 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 172 | recursive_iterator trieNode(this); |
| 173 | recursive_iterator end(0); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 174 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 175 | while (trieNode != end) { |
| 176 | if (cond(*trieNode)) { |
| 177 | trieNode = recursive_iterator(trieNode->erase()); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 178 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 179 | trieNode++; |
| 180 | } |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 181 | } |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 182 | |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 183 | // actual entry |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 184 | friend bool operator==<>(const trie<FullKey, PayloadTraits, PolicyHook>& a, |
| 185 | const trie<FullKey, PayloadTraits, PolicyHook>& b); |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 186 | |
| 187 | friend std::size_t |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 188 | hash_value<>(const trie<FullKey, PayloadTraits, PolicyHook>& trie_node); |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 189 | |
| 190 | inline std::pair<iterator, bool> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 191 | insert(const FullKey& key, typename PayloadTraits::insert_type payload) |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 192 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 193 | trie* trieNode = this; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 194 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 195 | BOOST_FOREACH (const Key& subkey, key) { |
| 196 | typename unordered_set::iterator item = trieNode->children_.find(subkey); |
| 197 | if (item == trieNode->children_.end()) { |
| 198 | trie* newNode = new trie(subkey, initialBucketSize_, bucketIncrement_); |
| 199 | // std::cout << "new " << newNode << "\n"; |
| 200 | newNode->parent_ = trieNode; |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 201 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 202 | if (trieNode->children_.size() >= trieNode->bucketSize_) { |
| 203 | trieNode->bucketSize_ += trieNode->bucketIncrement_; |
| 204 | trieNode->bucketIncrement_ *= 2; // increase bucketIncrement exponentially |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 205 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 206 | buckets_array newBuckets(new bucket_type[trieNode->bucketSize_]); |
| 207 | trieNode->children_.rehash(bucket_traits(newBuckets.get(), trieNode->bucketSize_)); |
| 208 | trieNode->buckets_.swap(newBuckets); |
| 209 | } |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 210 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 211 | std::pair<typename unordered_set::iterator, bool> ret = |
| 212 | trieNode->children_.insert(*newNode); |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 213 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 214 | trieNode = &(*ret.first); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 215 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 216 | else |
| 217 | trieNode = &(*item); |
| 218 | } |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 219 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 220 | if (trieNode->payload_ == PayloadTraits::empty_payload) { |
| 221 | trieNode->payload_ = payload; |
| 222 | return std::make_pair(trieNode, true); |
| 223 | } |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 224 | else |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 225 | return std::make_pair(trieNode, false); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 226 | } |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 227 | |
| 228 | /** |
| 229 | * @brief Removes payload (if it exists) and if there are no children, prunes parents trie |
| 230 | */ |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 231 | inline iterator |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 232 | erase() |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 233 | { |
| 234 | payload_ = PayloadTraits::empty_payload; |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 235 | return prune(); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 236 | } |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 237 | |
| 238 | /** |
| 239 | * @brief Do exactly as erase, but without erasing the payload |
| 240 | */ |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 241 | inline iterator |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 242 | prune() |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 243 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 244 | if (payload_ == PayloadTraits::empty_payload && children_.size() == 0) { |
| 245 | if (parent_ == 0) |
| 246 | return this; |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 247 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 248 | trie* parent = parent_; |
| 249 | parent->children_ |
| 250 | .erase_and_dispose(*this, |
| 251 | trie_delete_disposer()); // delete this; basically, committing a suicide |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 252 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 253 | return parent->prune(); |
| 254 | } |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 255 | return this; |
| 256 | } |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 257 | |
Alexander Afanasyev | 70426a0 | 2012-08-15 15:39:18 -0700 | [diff] [blame] | 258 | /** |
| 259 | * @brief Perform prune of the node, but without attempting to parent of the node |
| 260 | */ |
| 261 | inline void |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 262 | prune_node() |
Alexander Afanasyev | 70426a0 | 2012-08-15 15:39:18 -0700 | [diff] [blame] | 263 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 264 | if (payload_ == PayloadTraits::empty_payload && children_.size() == 0) { |
| 265 | if (parent_ == 0) |
| 266 | return; |
Alexander Afanasyev | 70426a0 | 2012-08-15 15:39:18 -0700 | [diff] [blame] | 267 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 268 | trie* parent = parent_; |
| 269 | parent->children_ |
| 270 | .erase_and_dispose(*this, |
| 271 | trie_delete_disposer()); // delete this; basically, committing a suicide |
| 272 | } |
Alexander Afanasyev | 70426a0 | 2012-08-15 15:39:18 -0700 | [diff] [blame] | 273 | } |
| 274 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 275 | // inline boost::tuple<const iterator, bool, const iterator> |
| 276 | // find (const FullKey &key) const |
| 277 | // { |
| 278 | // return const_cast<trie*> (this)->find (key); |
| 279 | // } |
Alexander Afanasyev | 78057c3 | 2012-07-06 15:18:46 -0700 | [diff] [blame] | 280 | |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 281 | /** |
| 282 | * @brief Perform the longest prefix match |
| 283 | * @param key the key for which to perform the longest prefix match |
| 284 | * |
| 285 | * @return ->second is true if prefix in ->first is longer than key |
| 286 | */ |
| 287 | inline boost::tuple<iterator, bool, iterator> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 288 | find(const FullKey& key) |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 289 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 290 | trie* trieNode = this; |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 291 | iterator foundNode = (payload_ != PayloadTraits::empty_payload) ? this : 0; |
| 292 | bool reachLast = true; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 293 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 294 | BOOST_FOREACH (const Key& subkey, key) { |
| 295 | typename unordered_set::iterator item = trieNode->children_.find(subkey); |
| 296 | if (item == trieNode->children_.end()) { |
| 297 | reachLast = false; |
| 298 | break; |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 299 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 300 | else { |
| 301 | trieNode = &(*item); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 302 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 303 | if (trieNode->payload_ != PayloadTraits::empty_payload) |
| 304 | foundNode = trieNode; |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | return boost::make_tuple(foundNode, reachLast, trieNode); |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | /** |
| 312 | * @brief Perform the longest prefix match satisfying preficate |
| 313 | * @param key the key for which to perform the longest prefix match |
| 314 | * |
| 315 | * @return ->second is true if prefix in ->first is longer than key |
| 316 | */ |
| 317 | template<class Predicate> |
| 318 | inline boost::tuple<iterator, bool, iterator> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 319 | find_if(const FullKey& key, Predicate pred) |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 320 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 321 | trie* trieNode = this; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 322 | iterator foundNode = (payload_ != PayloadTraits::empty_payload) ? this : 0; |
| 323 | bool reachLast = true; |
| 324 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 325 | BOOST_FOREACH (const Key& subkey, key) { |
| 326 | typename unordered_set::iterator item = trieNode->children_.find(subkey); |
| 327 | if (item == trieNode->children_.end()) { |
| 328 | reachLast = false; |
| 329 | break; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 330 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 331 | else { |
| 332 | trieNode = &(*item); |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 333 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 334 | if (trieNode->payload_ != PayloadTraits::empty_payload && pred(trieNode->payload_)) { |
| 335 | foundNode = trieNode; |
| 336 | } |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | return boost::make_tuple(foundNode, reachLast, trieNode); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 341 | } |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 342 | |
| 343 | /** |
| 344 | * @brief Find next payload of the sub-trie |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 345 | * @returns end() or a valid iterator pointing to the trie leaf (order is not defined, enumeration |
| 346 | * ) |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 347 | */ |
| 348 | inline iterator |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 349 | find() |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 350 | { |
| 351 | if (payload_ != PayloadTraits::empty_payload) |
| 352 | return this; |
| 353 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 354 | typedef trie<FullKey, PayloadTraits, PolicyHook> trie; |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 355 | for (typename trie::unordered_set::iterator subnode = children_.begin(); |
| 356 | subnode != children_.end(); subnode++) |
| 357 | // BOOST_FOREACH (trie &subnode, children_) |
| 358 | { |
| 359 | iterator value = subnode->find(); |
| 360 | if (value != 0) |
| 361 | return value; |
| 362 | } |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 363 | |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 364 | return 0; |
| 365 | } |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 366 | |
| 367 | /** |
| 368 | * @brief Find next payload of the sub-trie satisfying the predicate |
| 369 | * @param pred predicate |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 370 | * @returns end() or a valid iterator pointing to the trie leaf (order is not defined, enumeration |
| 371 | * ) |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 372 | */ |
| 373 | template<class Predicate> |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 374 | inline const iterator |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 375 | find_if(Predicate pred) |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 376 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 377 | if (payload_ != PayloadTraits::empty_payload && pred(payload_)) |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 378 | return this; |
| 379 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 380 | typedef trie<FullKey, PayloadTraits, PolicyHook> trie; |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 381 | for (typename trie::unordered_set::iterator subnode = children_.begin(); |
| 382 | subnode != children_.end(); subnode++) |
| 383 | // BOOST_FOREACH (const trie &subnode, children_) |
| 384 | { |
| 385 | iterator value = subnode->find_if(pred); |
| 386 | if (value != 0) |
| 387 | return value; |
| 388 | } |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 389 | |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 390 | return 0; |
| 391 | } |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 392 | |
Alexander Afanasyev | eec89ba | 2013-07-19 16:34:30 -0700 | [diff] [blame] | 393 | /** |
| 394 | * @brief Find next payload of the sub-trie satisfying the predicate |
| 395 | * @param pred predicate |
| 396 | * |
| 397 | * This version check predicate only for the next level children |
| 398 | * |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 399 | * @returns end() or a valid iterator pointing to the trie leaf (order is not defined, enumeration |
| 400 | *) |
Alexander Afanasyev | eec89ba | 2013-07-19 16:34:30 -0700 | [diff] [blame] | 401 | */ |
| 402 | template<class Predicate> |
| 403 | inline const iterator |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 404 | find_if_next_level(Predicate pred) |
Alexander Afanasyev | eec89ba | 2013-07-19 16:34:30 -0700 | [diff] [blame] | 405 | { |
| 406 | typedef trie<FullKey, PayloadTraits, PolicyHook> trie; |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 407 | for (typename trie::unordered_set::iterator subnode = children_.begin(); |
| 408 | subnode != children_.end(); subnode++) { |
| 409 | if (pred(subnode->key())) { |
| 410 | return subnode->find(); |
Alexander Afanasyev | eec89ba | 2013-07-19 16:34:30 -0700 | [diff] [blame] | 411 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 412 | } |
Alexander Afanasyev | eec89ba | 2013-07-19 16:34:30 -0700 | [diff] [blame] | 413 | |
| 414 | return 0; |
| 415 | } |
| 416 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 417 | iterator |
| 418 | end() |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 419 | { |
| 420 | return 0; |
| 421 | } |
| 422 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 423 | const_iterator |
| 424 | end() const |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 425 | { |
| 426 | return 0; |
| 427 | } |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 428 | |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 429 | typename PayloadTraits::const_return_type |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 430 | payload() const |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 431 | { |
| 432 | return payload_; |
| 433 | } |
| 434 | |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 435 | typename PayloadTraits::return_type |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 436 | payload() |
Alexander Afanasyev | 78057c3 | 2012-07-06 15:18:46 -0700 | [diff] [blame] | 437 | { |
| 438 | return payload_; |
| 439 | } |
| 440 | |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 441 | void |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 442 | set_payload(typename PayloadTraits::insert_type payload) |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 443 | { |
| 444 | payload_ = payload; |
| 445 | } |
Alexander Afanasyev | 0560eec | 2012-07-16 15:44:31 -0700 | [diff] [blame] | 446 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 447 | Key |
| 448 | key() const |
Alexander Afanasyev | 0560eec | 2012-07-16 15:44:31 -0700 | [diff] [blame] | 449 | { |
| 450 | return key_; |
| 451 | } |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 452 | |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 453 | inline void |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 454 | PrintStat(std::ostream& os) const; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 455 | |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 456 | private: |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 457 | // The disposer object function |
| 458 | struct trie_delete_disposer { |
| 459 | void |
| 460 | operator()(trie* delete_this) |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 461 | { |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 462 | delete delete_this; |
| 463 | } |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 464 | }; |
| 465 | |
| 466 | template<class D> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 467 | struct array_disposer { |
| 468 | void |
| 469 | operator()(D* array) |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 470 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 471 | delete[] array; |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 472 | } |
| 473 | }; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 474 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 475 | friend std::ostream& operator<<<>(std::ostream& os, const trie& trie_node); |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 476 | |
| 477 | public: |
| 478 | PolicyHook policy_hook_; |
| 479 | |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 480 | private: |
Alexander Afanasyev | 30cb117 | 2012-07-06 10:47:39 -0700 | [diff] [blame] | 481 | boost::intrusive::unordered_set_member_hook<> unordered_set_member_hook_; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 482 | |
| 483 | // necessary typedefs |
| 484 | typedef trie self_type; |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 485 | typedef boost::intrusive::member_hook<trie, boost::intrusive::unordered_set_member_hook<>, |
| 486 | &trie::unordered_set_member_hook_> member_hook; |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 487 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 488 | typedef boost::intrusive::unordered_set<trie, member_hook> unordered_set; |
| 489 | typedef typename unordered_set::bucket_type bucket_type; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 490 | typedef typename unordered_set::bucket_traits bucket_traits; |
| 491 | |
Alexander Afanasyev | 1cb4aad | 2012-08-09 14:58:16 -0700 | [diff] [blame] | 492 | template<class T, class NonConstT> |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 493 | friend class trie_iterator; |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 494 | |
| 495 | template<class T> |
| 496 | friend class trie_point_iterator; |
| 497 | |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 498 | //////////////////////////////////////////////// |
| 499 | // Actual data |
| 500 | //////////////////////////////////////////////// |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 501 | |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 502 | Key key_; ///< name component |
| 503 | |
| 504 | size_t initialBucketSize_; |
| 505 | size_t bucketIncrement_; |
| 506 | |
| 507 | size_t bucketSize_; |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 508 | typedef boost::interprocess::unique_ptr<bucket_type, array_disposer<bucket_type>> buckets_array; |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 509 | buckets_array buckets_; |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 510 | unordered_set children_; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 511 | |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 512 | typename PayloadTraits::storage_type payload_; |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 513 | trie* parent_; // to make cleaning effective |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 514 | }; |
| 515 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 516 | template<typename FullKey, typename PayloadTraits, typename PolicyHook> |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 517 | inline std::ostream& |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 518 | operator<<(std::ostream& os, const trie<FullKey, PayloadTraits, PolicyHook>& trie_node) |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 519 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 520 | os << "# " << trie_node.key_ << ((trie_node.payload_ != PayloadTraits::empty_payload) ? "*" : "") |
| 521 | << std::endl; |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 522 | typedef trie<FullKey, PayloadTraits, PolicyHook> trie; |
Alexander Afanasyev | 051d378 | 2012-07-03 10:10:15 -0700 | [diff] [blame] | 523 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 524 | for (typename trie::unordered_set::const_iterator subnode = trie_node.children_.begin(); |
| 525 | subnode != trie_node.children_.end(); subnode++) |
Alexander Afanasyev | 051d378 | 2012-07-03 10:10:15 -0700 | [diff] [blame] | 526 | // BOOST_FOREACH (const trie &subnode, trie_node.children_) |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 527 | { |
| 528 | os << "\"" << &trie_node << "\"" |
| 529 | << " [label=\"" << trie_node.key_ |
| 530 | << ((trie_node.payload_ != PayloadTraits::empty_payload) ? "*" : "") << "\"]\n"; |
| 531 | os << "\"" << &(*subnode) << "\"" |
| 532 | << " [label=\"" << subnode->key_ |
| 533 | << ((subnode->payload_ != PayloadTraits::empty_payload) ? "*" : "") << "\"]" |
| 534 | "\n"; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 535 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 536 | os << "\"" << &trie_node << "\"" |
| 537 | << " -> " |
| 538 | << "\"" << &(*subnode) << "\"" |
| 539 | << "\n"; |
| 540 | os << *subnode; |
| 541 | } |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 542 | |
| 543 | return os; |
| 544 | } |
| 545 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 546 | template<typename FullKey, typename PayloadTraits, typename PolicyHook> |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 547 | inline void |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 548 | trie<FullKey, PayloadTraits, PolicyHook>::PrintStat(std::ostream& os) const |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 549 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 550 | os << "# " << key_ << ((payload_ != PayloadTraits::empty_payload) ? "*" : "") << ": " |
| 551 | << children_.size() << " children" << std::endl; |
| 552 | for (size_t bucket = 0, maxbucket = children_.bucket_count(); bucket < maxbucket; bucket++) { |
| 553 | os << " " << children_.bucket_size(bucket); |
| 554 | } |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 555 | os << "\n"; |
| 556 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 557 | typedef trie<FullKey, PayloadTraits, PolicyHook> trie; |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 558 | for (typename trie::unordered_set::const_iterator subnode = children_.begin(); |
| 559 | subnode != children_.end(); subnode++) |
Alexander Afanasyev | 051d378 | 2012-07-03 10:10:15 -0700 | [diff] [blame] | 560 | // BOOST_FOREACH (const trie &subnode, children_) |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 561 | { |
| 562 | subnode->PrintStat(os); |
| 563 | } |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 564 | } |
| 565 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 566 | template<typename FullKey, typename PayloadTraits, typename PolicyHook> |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 567 | inline bool |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 568 | operator==(const trie<FullKey, PayloadTraits, PolicyHook>& a, |
| 569 | const trie<FullKey, PayloadTraits, PolicyHook>& b) |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 570 | { |
| 571 | return a.key_ == b.key_; |
| 572 | } |
| 573 | |
Alexander Afanasyev | 30f60e3 | 2012-07-10 14:21:16 -0700 | [diff] [blame] | 574 | template<typename FullKey, typename PayloadTraits, typename PolicyHook> |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 575 | inline std::size_t |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 576 | hash_value(const trie<FullKey, PayloadTraits, PolicyHook>& trie_node) |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 577 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 578 | return boost::hash_value(trie_node.key_); |
Alexander Afanasyev | fd0c41c | 2012-06-11 22:15:49 -0700 | [diff] [blame] | 579 | } |
Alexander Afanasyev | 89fb535 | 2012-06-12 22:43:16 -0700 | [diff] [blame] | 580 | |
Alexander Afanasyev | 1cb4aad | 2012-08-09 14:58:16 -0700 | [diff] [blame] | 581 | template<class Trie, class NonConstTrie> // hack for boost < 1.47 |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 582 | class trie_iterator { |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 583 | public: |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 584 | trie_iterator() |
| 585 | : trie_(0) |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 586 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 587 | } |
| 588 | trie_iterator(typename Trie::iterator item) |
| 589 | : trie_(item) |
| 590 | { |
| 591 | } |
| 592 | trie_iterator(Trie& item) |
| 593 | : trie_(&item) |
| 594 | { |
| 595 | } |
| 596 | |
| 597 | Trie& operator*() |
| 598 | { |
| 599 | return *trie_; |
| 600 | } |
| 601 | const Trie& operator*() const |
| 602 | { |
| 603 | return *trie_; |
| 604 | } |
| 605 | Trie* operator->() |
| 606 | { |
| 607 | return trie_; |
| 608 | } |
| 609 | const Trie* operator->() const |
| 610 | { |
| 611 | return trie_; |
| 612 | } |
| 613 | bool |
| 614 | operator==(trie_iterator<const Trie, NonConstTrie>& other) const |
| 615 | { |
| 616 | return (trie_ == other.trie_); |
| 617 | } |
| 618 | bool |
| 619 | operator==(trie_iterator<Trie, NonConstTrie>& other) |
| 620 | { |
| 621 | return (trie_ == other.trie_); |
| 622 | } |
| 623 | bool |
| 624 | operator!=(trie_iterator<const Trie, NonConstTrie>& other) const |
| 625 | { |
| 626 | return !(*this == other); |
| 627 | } |
| 628 | bool |
| 629 | operator!=(trie_iterator<Trie, NonConstTrie>& other) |
| 630 | { |
| 631 | return !(*this == other); |
| 632 | } |
| 633 | |
| 634 | trie_iterator<Trie, NonConstTrie>& |
| 635 | operator++(int) |
| 636 | { |
| 637 | if (trie_->children_.size() > 0) |
| 638 | trie_ = &(*trie_->children_.begin()); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 639 | else |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 640 | trie_ = goUp(); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 641 | return *this; |
| 642 | } |
| 643 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 644 | trie_iterator<Trie, NonConstTrie>& |
| 645 | operator++() |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 646 | { |
| 647 | (*this)++; |
| 648 | return *this; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 649 | } |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 650 | |
| 651 | private: |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 652 | typedef typename boost::mpl::if_<boost::is_same<Trie, NonConstTrie>, |
| 653 | typename Trie::unordered_set::iterator, |
| 654 | typename Trie::unordered_set::const_iterator>::type set_iterator; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 655 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 656 | Trie* |
| 657 | goUp() |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 658 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 659 | if (trie_->parent_ != 0) { |
| 660 | // typename Trie::unordered_set::iterator item = |
| 661 | set_iterator item = const_cast<NonConstTrie*>(trie_) |
| 662 | ->parent_->children_.iterator_to(const_cast<NonConstTrie&>(*trie_)); |
| 663 | item++; |
| 664 | if (item != trie_->parent_->children_.end()) { |
| 665 | return &(*item); |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 666 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 667 | else { |
| 668 | trie_ = trie_->parent_; |
| 669 | return goUp(); |
| 670 | } |
| 671 | } |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 672 | else |
| 673 | return 0; |
| 674 | } |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 675 | |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 676 | private: |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 677 | Trie* trie_; |
Alexander Afanasyev | 44bb6ea | 2012-07-09 08:44:41 -0700 | [diff] [blame] | 678 | }; |
| 679 | |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 680 | template<class Trie> |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 681 | class trie_point_iterator { |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 682 | private: |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 683 | typedef typename boost::mpl::if_<boost::is_same<Trie, const Trie>, |
| 684 | typename Trie::unordered_set::const_iterator, |
| 685 | typename Trie::unordered_set::iterator>::type set_iterator; |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 686 | |
| 687 | public: |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 688 | trie_point_iterator() |
| 689 | : trie_(0) |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 690 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 691 | } |
| 692 | trie_point_iterator(typename Trie::iterator item) |
| 693 | : trie_(item) |
| 694 | { |
| 695 | } |
| 696 | trie_point_iterator(Trie& item) |
| 697 | { |
| 698 | if (item.children_.size() != 0) |
| 699 | trie_ = &*item.children_.begin(); |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 700 | else |
| 701 | trie_ = 0; |
| 702 | } |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 703 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 704 | Trie& operator*() |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 705 | { |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 706 | return *trie_; |
| 707 | } |
| 708 | const Trie& operator*() const |
| 709 | { |
| 710 | return *trie_; |
| 711 | } |
| 712 | Trie* operator->() |
| 713 | { |
| 714 | return trie_; |
| 715 | } |
| 716 | const Trie* operator->() const |
| 717 | { |
| 718 | return trie_; |
| 719 | } |
| 720 | bool |
| 721 | operator==(trie_point_iterator<const Trie>& other) const |
| 722 | { |
| 723 | return (trie_ == other.trie_); |
| 724 | } |
| 725 | bool |
| 726 | operator==(trie_point_iterator<Trie>& other) |
| 727 | { |
| 728 | return (trie_ == other.trie_); |
| 729 | } |
| 730 | bool |
| 731 | operator!=(trie_point_iterator<const Trie>& other) const |
| 732 | { |
| 733 | return !(*this == other); |
| 734 | } |
| 735 | bool |
| 736 | operator!=(trie_point_iterator<Trie>& other) |
| 737 | { |
| 738 | return !(*this == other); |
| 739 | } |
| 740 | |
| 741 | trie_point_iterator<Trie>& |
| 742 | operator++(int) |
| 743 | { |
| 744 | if (trie_->parent_ != 0) { |
| 745 | set_iterator item = trie_->parent_->children_.iterator_to(*trie_); |
| 746 | item++; |
| 747 | if (item == trie_->parent_->children_.end()) |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 748 | trie_ = 0; |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 749 | else |
| 750 | trie_ = &*item; |
| 751 | } |
| 752 | else { |
| 753 | trie_ = 0; |
| 754 | } |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 755 | return *this; |
| 756 | } |
| 757 | |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 758 | trie_point_iterator<Trie>& |
| 759 | operator++() |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 760 | { |
| 761 | (*this)++; |
| 762 | return *this; |
Alexander Afanasyev | eec6629 | 2013-02-06 16:23:21 -0800 | [diff] [blame] | 763 | } |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 764 | |
| 765 | private: |
Alexander Afanasyev | be55cf6 | 2014-12-20 17:51:09 -0800 | [diff] [blame] | 766 | Trie* trie_; |
Alexander Afanasyev | 0845c09 | 2012-07-13 17:45:33 -0700 | [diff] [blame] | 767 | }; |
| 768 | |
Alexander Afanasyev | 30cb117 | 2012-07-06 10:47:39 -0700 | [diff] [blame] | 769 | } // ndnSIM |
Alexander Afanasyev | 2b4c947 | 2012-08-09 15:00:38 -0700 | [diff] [blame] | 770 | } // ndn |
Alexander Afanasyev | e77db79 | 2012-08-09 11:10:58 -0700 | [diff] [blame] | 771 | } // ns3 |
Alexander Afanasyev | 30cb117 | 2012-07-06 10:47:39 -0700 | [diff] [blame] | 772 | |
Alexander Afanasyev | 9a98970 | 2012-06-29 17:44:00 -0700 | [diff] [blame] | 773 | #endif // TRIE_H_ |