| 11 | { |
| 12 | template <typename T, bool AllowDuplicate = true> |
| 13 | class QueryTrie |
| 14 | { |
| 15 | private: |
| 16 | struct TrieNode |
| 17 | { |
| 18 | std::vector<std::pair<std::wstring, std::unique_ptr<TrieNode>>> m_branch; |
| 19 | std::vector<T*> m_data; |
| 20 | |
| 21 | void CollectData(std::vector<T*>& ret) |
| 22 | { |
| 23 | ret.insert(ret.end(), m_data.begin(), m_data.end()); |
| 24 | for (auto& branch : m_branch) |
| 25 | { |
| 26 | branch.second->CollectData(ret); |
| 27 | } |
| 28 | } |
| 29 | |
| 30 | void SortList() |
| 31 | { |
| 32 | std::sort(m_branch.begin(), m_branch.end()); |
| 33 | } |
| 34 | |
| 35 | std::pair<std::wstring, std::unique_ptr<TrieNode>>* SearchPrefix(wchar_t leading) |
| 36 | { |
| 37 | auto left = m_branch.begin(); |
| 38 | auto right = m_branch.end(); |
| 39 | auto mid = left + (right - left) / 2; |
| 40 | auto result = right; |
| 41 | while (left != right) |
| 42 | { |
| 43 | assert(!mid->first.empty()); |
| 44 | if (mid->first[0] == leading) |
| 45 | { |
| 46 | result = mid; |
| 47 | break; |
| 48 | } |
| 49 | else if (mid->first[0] > leading) |
| 50 | { |
| 51 | right = mid; |
| 52 | } |
| 53 | else |
| 54 | { |
| 55 | left = mid + 1; |
| 56 | } |
| 57 | mid = left + (right - left) / 2; |
| 58 | } |
| 59 | if (result == m_branch.end()) |
| 60 | return nullptr; |
| 61 | return &(*result); |
| 62 | } |
| 63 | }; |
| 64 | |
| 65 | TrieNode m_rootNode; |
| 66 | public: |
| 67 | void AddEntry(const wchar_t* key, T* value) |
| 68 | { |
| 69 | const wchar_t* keyPointer = key; |
| 70 | TrieNode* node = &m_rootNode; |
nothing calls this directly
no outgoing calls
no test coverage detected