memorystream.h

Go to the documentation of this file.

// 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. All rights reserved.
//
// 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_MEMORYSTREAM_H_
#define RAPIDJSON_MEMORYSTREAM_H_

#include "rapidjson.h"

RAPIDJSON_NAMESPACE_BEGIN


struct MemoryStream {
 typedef char Ch; // byte

 MemoryStream(const Ch *src, size_t size) : src_(src), begin_(src), end_(src + size), size_(size) {}

 Ch Peek() const { return (src_ == end_) ? '\0' : *src_; }
 Ch Take() { return (src_ == end_) ? '\0' : *src_++; }
 size_t Tell() const { return static_cast<size_t>(src_ - begin_); }

 Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
 void Put(Ch) { RAPIDJSON_ASSERT(false); }
 void Flush() { RAPIDJSON_ASSERT(false); }
 size_t PutEnd(Ch*) { RAPIDJSON_ASSERT(false); return 0; }

 // For encoding detection only.
 const Ch* Peek4() const {
 return Tell() + 4 <= size_ ? src_ : 0;
 }

 const Ch* src_; 
 const Ch* begin_; 
 const Ch* end_; 
 size_t size_; 
};

RAPIDJSON_NAMESPACE_END

#endif // RAPIDJSON_MEMORYBUFFER_H_