Module tools.jackson.dataformat.protobuf

Package tools.jackson.dataformat.protobuf

Class ByteAccumulator

java.lang.Object

tools.jackson.dataformat.protobuf.ByteAccumulator

public class ByteAccumulator
extends Object

Helper object used for buffering content for cases where we need (byte-)length prefixes for content like packed arrays, embedded messages, Strings and (perhaps) binary content.

Field Summary

Fields

Modifier and Type	Field	Description
protected tools.jackson.dataformat.protobuf.ByteAccumulator.Segment	_firstSegment
protected tools.jackson.dataformat.protobuf.ByteAccumulator.Segment	_lastSegment
protected final ByteAccumulator	_parent
protected int	_parentStart	Pointer to start of contents provided by parent, preceding room for prefix (that is, same as or less than `_prefixOffset`)
protected final byte[]	_prefixBuffer	Caller-provided buffer in which optional type prefix, and mandatory length indicator may be added.
protected final int	_prefixOffset	Offset within _prefixBuffer where there is room for encoding prefix (type, tag, length).
protected int	_segmentBytes	Total number of bytes contained within buffers, to be used for length prefix.
protected final int	_typedTag

Constructor Summary

Constructors

Constructor	Description
ByteAccumulator(ByteAccumulator p, int typedTag, byte[] prefixBuffer, int prefixOffset, int parentStart)

Method Summary

Modifier and Type	Method	Description
void	append(byte[] buf, int offset, int len)
ByteAccumulator	finish(OutputStream out, byte[] input)
ByteAccumulator	finish(OutputStream out, byte[] input, int offset, int len)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

_parent

protected final ByteAccumulator _parent

_prefixBuffer

protected final byte[] _prefixBuffer

Caller-provided buffer in which optional type prefix, and mandatory length indicator may be added. Caller ensures there is enough room for both, i.e. up to 10 bytes (if both) or 5 bytes (if just length)

_prefixOffset

protected final int _prefixOffset

Offset within _prefixBuffer where there is room for encoding prefix (type, tag, length).

_typedTag

protected final int _typedTag

_firstSegment

protected tools.jackson.dataformat.protobuf.ByteAccumulator.Segment _firstSegment

_lastSegment

protected tools.jackson.dataformat.protobuf.ByteAccumulator.Segment _lastSegment

_segmentBytes

protected int _segmentBytes

Total number of bytes contained within buffers, to be used for length prefix.

_parentStart

protected int _parentStart

Pointer to start of contents provided by parent, preceding room for prefix (that is, same as or less than `_prefixOffset`)

Constructor Details

ByteAccumulator

public ByteAccumulator(ByteAccumulator p,
 int typedTag,
 byte[] prefixBuffer,
 int prefixOffset,
 int parentStart)

Method Details

append

public void append(byte[] buf,
 int offset,
 int len)

finish

public ByteAccumulator finish(OutputStream out,
 byte[] input,
 int offset,
 int len)
                       throws IOException

Throws:

IOException

finish

public ByteAccumulator finish(OutputStream out,
 byte[] input)
                       throws IOException

Throws:

IOException