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memorybuffer.h
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3 // Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
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5 // Licensed under the MIT License (the "License"); you may not use this file except
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14 
15 #ifndef RAPIDJSON_MEMORYBUFFER_H_
16 #define RAPIDJSON_MEMORYBUFFER_H_
17 
18 #include "rapidjson.h"
19 #include "internal/stack.h"
20 
22 
24 
36 template <typename Allocator = CrtAllocator>
38  typedef char Ch; // byte
39 
40  GenericMemoryBuffer(Allocator* allocator = 0, size_t capacity = kDefaultCapacity) : stack_(allocator, capacity) {}
41 
42  void Put(Ch c) { *stack_.template Push<Ch>() = c; }
43  void Flush() {}
44 
45  void Clear() { stack_.Clear(); }
46  void ShrinkToFit() { stack_.ShrinkToFit(); }
47  Ch* Push(size_t count) { return stack_.template Push<Ch>(count); }
48  void Pop(size_t count) { stack_.template Pop<Ch>(count); }
49 
50  const Ch* GetBuffer() const {
51  return stack_.template Bottom<Ch>();
52  }
53 
54  size_t GetSize() const { return stack_.GetSize(); }
55 
56  static const size_t kDefaultCapacity = 256;
58 };
59 
61 
63 template<>
64 inline void PutN(MemoryBuffer& memoryBuffer, char c, size_t n) {
65  std::memset(memoryBuffer.stack_.Push<char>(n), c, n * sizeof(c));
66 }
67 
69 
70 #endif // RAPIDJSON_MEMORYBUFFER_H_
static const size_t kDefaultCapacity
Definition: memorybuffer.h:56
void ShrinkToFit()
Definition: memorybuffer.h:46
#define RAPIDJSON_NAMESPACE_END
provide custom rapidjson namespace (closing expression)
Definition: rapidjson.h:119
Represents an in-memory output byte stream.
Definition: memorybuffer.h:37
A type-unsafe stack for storing different types of data.
Definition: stack.h:30
size_t GetSize() const
Definition: memorybuffer.h:54
GenericMemoryBuffer(Allocator *allocator=0, size_t capacity=kDefaultCapacity)
Definition: memorybuffer.h:40
char Ch
Definition: memorybuffer.h:38
#define RAPIDJSON_NAMESPACE_BEGIN
provide custom rapidjson namespace (opening expression)
Definition: rapidjson.h:116
void Pop(size_t count)
Definition: memorybuffer.h:48
Ch * Push(size_t count)
Definition: memorybuffer.h:47
const Ch * GetBuffer() const
Definition: memorybuffer.h:50
void Put(Ch c)
Definition: memorybuffer.h:42
void Flush()
Definition: memorybuffer.h:43
common definitions and configuration
internal::Stack< Allocator > stack_
Definition: memorybuffer.h:57
void PutN(MemoryBuffer &memoryBuffer, char c, size_t n)
Implement specialized version of PutN() with memset() for better performance.
Definition: memorybuffer.h:64
void Clear()
Definition: memorybuffer.h:45
GenericMemoryBuffer MemoryBuffer
Definition: memorybuffer.h:60