ojvm.loading.instructions
Class InstructionInputStream

java.lang.Object
  |
  +--ojvm.loading.ClassFileInputStream
        |
        +--ojvm.loading.instructions.InstructionInputStream

public class InstructionInputStream

extends ClassFileInputStream

A specialized input stream for reading byte arrays of instructions. Compared to ClassInputStream, the new functionality is to keep track of how many bytes were read so far so that we can conveniently deal with instructions that must be aligned on a 4-byte boundary.

Fields inherited from class ojvm.loading.ClassFileInputStream

err, stream

Constructor Summary

InstructionInputStream(byte[] instructionArray, java.lang.String filename)

Method Summary

int	getByteArrayLength()
byte	readByte()
int	readInt()
short	readShort()
int	readU1()
int	readU2()
int	readU4()
void	skipBytes(int len)

Methods inherited from class ojvm.loading.ClassFileInputStream

getFilename, hasMoreBytes

Methods inherited from class java.lang.Object

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

Constructor Detail

InstructionInputStream

public InstructionInputStream(byte[] instructionArray,
                              java.lang.String filename)

Method Detail

getByteArrayLength

public int getByteArrayLength()

skipBytes

public void skipBytes(int len)
               throws ClassFileInputStreamE

Overrides:

skipBytes in class ClassFileInputStream

readU1

public int readU1()
           throws ClassFileInputStreamE

Overrides:

readU1 in class ClassFileInputStream

readU2

public int readU2()
           throws ClassFileInputStreamE

Overrides:

readU2 in class ClassFileInputStream

readU4

public int readU4()
           throws ClassFileInputStreamE

Overrides:

readU4 in class ClassFileInputStream

readByte

public byte readByte()
              throws ClassFileInputStreamE

Overrides:

readByte in class ClassFileInputStream

readShort

public short readShort()
                throws ClassFileInputStreamE

Overrides:

readShort in class ClassFileInputStream

readInt

public int readInt()
            throws ClassFileInputStreamE

Overrides:

readInt in class ClassFileInputStream