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_CFX_STRING_POOL_TEMPLATE_H_ 8 #define CORE_FXCRT_CFX_STRING_POOL_TEMPLATE_H_ 9 10 #include <unordered_set> 11 12 #include "core/fxcrt/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_CFX_STRING_POOL_TEMPLATE_H_ 31
