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Issue 388613002: Revert 282408 "Use upstream libaddressinput in Chrome." (Closed) Base URL: svn://svn.chromium.org/chrome/
Patch Set: Created 6 years, 5 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "third_party/libaddressinput/chromium/trie.h"
6
7 #include <queue>
8 #include <string>
9
10 #include "base/logging.h"
11
12 // Separating template definitions and declarations requires defining all
13 // possible template parameters to avoid linking errors.
14 namespace i18n {
15 namespace addressinput {
16 class RegionData;
17 }
18 }
19
20 namespace autofill {
21
22 template <typename T>
23 Trie<T>::Trie() {}
24
25 template <typename T>
26 Trie<T>::~Trie() {}
27
28 template <typename T>
29 void Trie<T>::AddDataForKey(const std::vector<uint8_t>& key,
30 const T& data_item) {
31 Trie<T>* current_node = this;
32 for (std::vector<uint8_t>::size_type i = 0; i < key.size(); ++i) {
33 if (!key[i])
34 break;
35 current_node = &current_node->sub_nodes_[key[i]];
36 }
37 current_node->data_list_.insert(data_item);
38 }
39
40 template <typename T>
41 void Trie<T>::FindDataForKeyPrefix(const std::vector<uint8_t>& key_prefix,
42 std::set<T>* results) const {
43 DCHECK(results);
44
45 // Find the sub-trie for the key prefix.
46 const Trie<T>* current_node = this;
47 for (std::vector<uint8_t>::size_type i = 0; i < key_prefix.size(); ++i) {
48 if (!key_prefix[i])
49 break;
50
51 typename std::map<uint8_t, Trie<T> >::const_iterator sub_node_it =
52 current_node->sub_nodes_.find(key_prefix[i]);
53 if (sub_node_it == current_node->sub_nodes_.end())
54 return;
55
56 current_node = &sub_node_it->second;
57 }
58
59 // Collect data from all sub-tries.
60 std::queue<const Trie<T>*> node_queue;
61 node_queue.push(current_node);
62 while (!node_queue.empty()) {
63 const Trie<T>* queue_front = node_queue.front();
64 node_queue.pop();
65
66 results->insert(queue_front->data_list_.begin(),
67 queue_front->data_list_.end());
68
69 for (typename std::map<uint8_t, Trie<T> >::const_iterator sub_node_it =
70 queue_front->sub_nodes_.begin();
71 sub_node_it != queue_front->sub_nodes_.end();
72 ++sub_node_it) {
73 node_queue.push(&sub_node_it->second);
74 }
75 }
76 }
77
78 template class Trie<const ::i18n::addressinput::RegionData*>;
79 template class Trie<std::string>;
80
81 } // namespace autofill
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