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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
*/
#pragma once
#include <utils/Errors.h>
#include <utils/RefBase.h>
#include <stdint.h>
#include <vector>
namespace android {
namespace util {
class ProtoReader : public virtual RefBase {
public:
ProtoReader();
~ProtoReader();
/**
* Returns the number of bytes written in the buffer
*/
virtual ssize_t size() const = 0;
/**
* Returns the size of total bytes read.
*/
virtual size_t bytesRead() const = 0;
/**
* Returns the current position of read pointer, if NULL is returned, it reaches
* end of buffer.
*/
virtual uint8_t const* readBuffer() = 0;
/**
* Returns the readable size in the current read buffer.
*/
virtual size_t currentToRead() = 0;
/**
* Returns true if next bytes is available for read.
*/
virtual bool hasNext() = 0;
/**
* Reads the current byte and moves pointer 1 bit.
*/
virtual uint8_t next() = 0;
/**
* Read varint from the reader, the reader will point to next available byte.
*/
virtual uint64_t readRawVarint() = 0;
/**
* Advance the read pointer.
*/
virtual void move(size_t amt) = 0;
};
} // util
} // android
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