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 // Tencent is pleased to support the open source community by making RapidJSON available.
 //
 // Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip.
 //
 // Licensed under the MIT License (the "License"); you may not use this file except
 // in compliance with the License. You may obtain a copy of the License at
 //
 // http://opensource.org/licenses/MIT
 //
 // Unless required by applicable law or agreed to in writing, software distributed
 // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 // CONDITIONS OF ANY KIND, either express or implied. See the License for the
 // specific language governing permissions and limitations under the License.
  
 #ifndef RAPIDJSON_MEMORYBUFFER_H_
 #define RAPIDJSON_MEMORYBUFFER_H_
  
 #include "stream.h"
 #include "internal/stack.h"
  
 RAPIDJSON_NAMESPACE_BEGIN
  
  
 template <typename Allocator = CrtAllocator>
 struct GenericMemoryBuffer
 {
     typedef char Ch; // byte
  
     GenericMemoryBuffer(Allocator* allocator = 0, size_t capacity = kDefaultCapacity)
         : stack_(allocator, capacity)
     {
     }
  
     void Put(Ch c) { *stack_.template Push<Ch>() = c; }
     void Flush() {}
  
     void Clear() { stack_.Clear(); }
     void ShrinkToFit() { stack_.ShrinkToFit(); }
     Ch* Push(size_t count) { return stack_.template Push<Ch>(count); }
     void Pop(size_t count) { stack_.template Pop<Ch>(count); }
  
     const Ch* GetBuffer() const { return stack_.template Bottom<Ch>(); }
  
     size_t GetSize() const { return stack_.GetSize(); }
  
     static const size_t kDefaultCapacity = 256;
     mutable internal::Stack<Allocator> stack_;
 };
  
 typedef GenericMemoryBuffer<> MemoryBuffer;
  
 template <>
 inline void PutN(MemoryBuffer& memoryBuffer, char c, size_t n)
 {
     std::memset(memoryBuffer.stack_.Push<char>(n), c, n * sizeof(c));
 }
  
 RAPIDJSON_NAMESPACE_END
  
 #endif // RAPIDJSON_MEMORYBUFFER_H_