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1 // Copyright 2016 PDFium Authors. All rights reserved. | 1 // Copyright 2016 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #ifndef CORE_FXCRT_INCLUDE_CFX_STRING_POOL_TEMPLATE_H_ | 7 #ifndef CORE_FXCRT_CFX_STRING_POOL_TEMPLATE_H_ |
8 #define CORE_FXCRT_INCLUDE_CFX_STRING_POOL_TEMPLATE_H_ | 8 #define CORE_FXCRT_CFX_STRING_POOL_TEMPLATE_H_ |
9 | 9 |
10 #include <unordered_set> | 10 #include <unordered_set> |
11 | 11 |
12 #include "core/fxcrt/include/fx_string.h" | 12 #include "core/fxcrt/fx_string.h" |
13 | 13 |
14 template <typename StringType> | 14 template <typename StringType> |
15 class CFX_StringPoolTemplate { | 15 class CFX_StringPoolTemplate { |
16 public: | 16 public: |
17 StringType Intern(const StringType& str) { return *m_Pool.insert(str).first; } | 17 StringType Intern(const StringType& str) { return *m_Pool.insert(str).first; } |
18 void Clear() { m_Pool.clear(); } | 18 void Clear() { m_Pool.clear(); } |
19 | 19 |
20 private: | 20 private: |
21 std::unordered_set<StringType> m_Pool; | 21 std::unordered_set<StringType> m_Pool; |
22 }; | 22 }; |
23 | 23 |
24 using CFX_ByteStringPool = CFX_StringPoolTemplate<CFX_ByteString>; | 24 using CFX_ByteStringPool = CFX_StringPoolTemplate<CFX_ByteString>; |
25 using CFX_WideStringPool = CFX_StringPoolTemplate<CFX_WideString>; | 25 using CFX_WideStringPool = CFX_StringPoolTemplate<CFX_WideString>; |
26 | 26 |
27 extern template class CFX_StringPoolTemplate<CFX_ByteString>; | 27 extern template class CFX_StringPoolTemplate<CFX_ByteString>; |
28 extern template class CFX_StringPoolTemplate<CFX_WideString>; | 28 extern template class CFX_StringPoolTemplate<CFX_WideString>; |
29 | 29 |
30 #endif // CORE_FXCRT_INCLUDE_CFX_STRING_POOL_TEMPLATE_H_ | 30 #endif // CORE_FXCRT_CFX_STRING_POOL_TEMPLATE_H_ |
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