com.alibaba.fastjson.asm

Class ByteVector

java.lang.Object

com.alibaba.fastjson.asm.ByteVector

public class ByteVector
extends Object

A dynamically extensible vector of bytes. This class is roughly equivalent to a DataOutputStream on top of a ByteArrayOutputStream, but is more efficient.

Author:

Eric Bruneton

Field Summary

Fields

Modifier and Type	Field and Description
byte[]	data The content of this vector.
int	length Actual number of bytes in this vector.

Constructor Summary

Constructors

Constructor and Description
ByteVector() Constructs a new ByteVector with a default initial size.
ByteVector(int initialSize) Constructs a new ByteVector with the given initial size.

Method Summary

Modifier and Type	Method and Description
ByteVector	put12(int b, int s) Puts a byte and a short into this byte vector.
ByteVector	putByte(int b) Puts a byte into this byte vector.
ByteVector	putByteArray(byte[] b, int off, int len) Puts an array of bytes into this byte vector.
ByteVector	putInt(int i) Puts an int into this byte vector.
ByteVector	putShort(int s) Puts a short into this byte vector.
ByteVector	putUTF8(String s) Puts an UTF8 string into this byte vector.

Methods inherited from class java.lang.Object

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

Field Detail

data

public byte[] data

The content of this vector.

length

public int length

Actual number of bytes in this vector.

Constructor Detail

ByteVector

public ByteVector()

Constructs a new ByteVector with a default initial size.

ByteVector

public ByteVector(int initialSize)

Constructs a new ByteVector with the given initial size.

Parameters:

initialSize - the initial size of the byte vector to be constructed.

Method Detail

putByte

public ByteVector putByte(int b)

Puts a byte into this byte vector. The byte vector is automatically enlarged if necessary.

Parameters:

b - a byte.

Returns:

this byte vector.

putShort

public ByteVector putShort(int s)

Puts a short into this byte vector. The byte vector is automatically enlarged if necessary.

Parameters:

s - a short.

Returns:

this byte vector.

put12

public ByteVector put12(int b,
                        int s)

Puts a byte and a short into this byte vector. The byte vector is automatically enlarged if necessary.

Parameters:

b - a byte.

s - a short.

Returns:

this byte vector.

putInt

public ByteVector putInt(int i)

Puts an int into this byte vector. The byte vector is automatically enlarged if necessary.

Parameters:

i - an int.

Returns:

this byte vector.

putUTF8

public ByteVector putUTF8(String s)

Puts an UTF8 string into this byte vector. The byte vector is automatically enlarged if necessary.

Parameters:

s - a String.

Returns:

this byte vector.

putByteArray

public ByteVector putByteArray(byte[] b,
                               int off,
                               int len)

Puts an array of bytes into this byte vector. The byte vector is automatically enlarged if necessary.

Parameters:

b - an array of bytes. May be null to put len null bytes into this byte vector.

off - index of the fist byte of b that must be copied.

len - number of bytes of b that must be copied.

Returns:

this byte vector.