Package com.tonic.parser

Class AbstractParser

java.lang.Object

com.tonic.parser.AbstractParser

Direct Known Subclasses:

ClassFile

public abstract class AbstractParser
extends Object

An abstract parser for reading various data types from a byte array.

Method Summary

Modifier and Type	Method	Description
byte[]	getBytes()	Gets the classes origonal bytes
int	getIndex()
int	getLength()	Gets the byte array length.
byte	readByte()	Reads a signed byte.
void	readBytes(byte[] code, int start, int length)	Reads multiple bytes into destination array.
double	readDouble()	Reads a double value.
float	readFloat()	Reads a float value.
int	readInt()	Reads a signed int in big-endian order.
long	readLong()	Reads a signed long in big-endian order.
short	readShort()	Reads a signed short in big-endian order.
int	readUnsignedByte()	Reads an unsigned byte (0 to 255).
long	readUnsignedInt()	Reads an unsigned int (0 to 4,294,967,295) in big-endian order.
BigInteger	readUnsignedLong()	Reads an unsigned long in big-endian order.
int	readUnsignedShort()	Reads an unsigned short (0 to 65,535) in big-endian order.
String	readUtf8()	Reads a UTF-8 encoded string.
void	rebuild()	Rebuilds byte array from current state.

Methods inherited from class java.lang.Object

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

Method Detail

getBytes

public byte[] getBytes()

Gets the classes origonal bytes

Returns:

class bytes

getIndex

public int getIndex()

Returns:

the index

getLength

public final int getLength()

Gets the byte array length.

Returns:

length of the byte array

rebuild

public final void rebuild()
                   throws IOException

Rebuilds byte array from current state.

Throws:

IOException - if writing fails

IncorrectFormatException - if rebuilt array fails verification

readByte

public final byte readByte()

Reads a signed byte.

Returns:

signed byte value

Throws:

IndexOutOfBoundsException - if out of bounds

readUnsignedByte

public final int readUnsignedByte()

Reads an unsigned byte (0 to 255).

Returns:

unsigned byte as int

Throws:

IndexOutOfBoundsException - if out of bounds

readShort

public final short readShort()

Reads a signed short in big-endian order.

Returns:

signed short value

Throws:

IndexOutOfBoundsException - if insufficient bytes

readUnsignedShort

public final int readUnsignedShort()

Reads an unsigned short (0 to 65,535) in big-endian order.

Returns:

unsigned short as int

Throws:

IndexOutOfBoundsException - if insufficient bytes

readInt

public final int readInt()

Reads a signed int in big-endian order.

Returns:

signed int value

Throws:

IndexOutOfBoundsException - if insufficient bytes

readUnsignedInt

public final long readUnsignedInt()

Reads an unsigned int (0 to 4,294,967,295) in big-endian order.

Returns:

unsigned int as long

Throws:

IndexOutOfBoundsException - if insufficient bytes

readLong

public final long readLong()

Reads a signed long in big-endian order.

Returns:

signed long value

Throws:

IndexOutOfBoundsException - if insufficient bytes

readUnsignedLong

public final BigInteger readUnsignedLong()

Reads an unsigned long in big-endian order.

Returns:

unsigned long as BigInteger

Throws:

IndexOutOfBoundsException - if insufficient bytes

readDouble

public final double readDouble()

Reads a double value.

Returns:

double value

Throws:

IndexOutOfBoundsException - if insufficient bytes

readFloat

public final float readFloat()

Reads a float value.

Returns:

float value

Throws:

IndexOutOfBoundsException - if insufficient bytes

readUtf8

public final String readUtf8()

Reads a UTF-8 encoded string.

Returns:

UTF-8 string

Throws:

IndexOutOfBoundsException - if insufficient bytes

readBytes

public final void readBytes(byte[] code,
                            int start,
                            int length)

Reads multiple bytes into destination array.

Parameters:

code - destination array

start - starting position in destination

length - number of bytes to read

Throws:

IndexOutOfBoundsException - if insufficient bytes