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| 1 // Copyright 2016 PDFium 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 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 |
| 7 #ifndef CORE_FXCRT_INCLUDE_CFX_STRING_POOL_TEMPLATE_H_ |
| 8 #define CORE_FXCRT_INCLUDE_CFX_STRING_POOL_TEMPLATE_H_ |
| 9 |
| 10 #include <unordered_set> |
| 11 |
| 12 #include "core/fxcrt/include/fx_string.h" |
| 13 |
| 14 template <typename StringType> |
| 15 class CFX_StringPoolTemplate { |
| 16 public: |
| 17 StringType Intern(const StringType& str) { return *m_Pool.insert(str).first; } |
| 18 void Clear() { m_Pool.clear(); } |
| 19 |
| 20 private: |
| 21 std::unordered_set<StringType> m_Pool; |
| 22 }; |
| 23 |
| 24 using CFX_ByteStringPool = CFX_StringPoolTemplate<CFX_ByteString>; |
| 25 using CFX_WideStringPool = CFX_StringPoolTemplate<CFX_WideString>; |
| 26 |
| 27 extern template class CFX_StringPoolTemplate<CFX_ByteString>; |
| 28 extern template class CFX_StringPoolTemplate<CFX_WideString>; |
| 29 |
| 30 #endif // CORE_FXCRT_INCLUDE_CFX_STRING_POOL_TEMPLATE_H_ |
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