jef.dna.instructions.impl
Class InstructionAncestorRefsCpt

java.lang.Object
  jef.dna.instructions.impl.InstructionAncestor
      jef.dna.instructions.impl.InstructionAncestorRefsCpt

All Implemented Interfaces:

java.lang.Cloneable, Instruction, InstructionRefsCpt, BytesCountable

Direct Known Subclasses:

InstructionRefsCpt16, InstructionRefsCpt8

public abstract class InstructionAncestorRefsCpt
extends InstructionAncestor
implements InstructionRefsCpt

This class is the ancestor of all the concrete instruction classes referring the constant pool table.

Author:

ggiovanzana

Field Summary

protected static Logger	logger Logger
protected static int	MASK Bit mask used to extract a byte value from an int value.
protected static int	SHIFT Positions to shift.

Fields inherited from class jef.dna.instructions.impl.InstructionAncestor

opCode, operands, operandsCount

Constructor Summary

InstructionAncestorRefsCpt()

Method Summary

java.lang.Object	clone() Clone this instance.
abstract int	getIndex() Provides the reference to the constant pool table.
abstract void	setIndex(int index) Sets the reference to the constant pool table.
int	updateRefs(int offset) This method implements the logic necessary to update all the references to constant pool table's entries contained within the bytecode instruction.

Methods inherited from class jef.dna.instructions.impl.InstructionAncestor

fromArray, getBytesCount, getOpCode, getOperands, getOperandsCount, setOpCode, setOperands, setOperandsCountPosticipated, toArray

Methods inherited from class java.lang.Object

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

Methods inherited from interface jef.dna.instructions.Instruction

fromArray, getOpCode, getOperands, getOperandsCount, setOpCode, setOperands, setOperandsCountPosticipated, toArray

Methods inherited from interface jef.dna.util.BytesCountable

getBytesCount

Field Detail

logger

protected static Logger logger

Logger

SHIFT

protected static final int SHIFT

Positions to shift.

See Also:

Constant Field Values

MASK

protected static final int MASK

Bit mask used to extract a byte value from an int value.

See Also:

Constant Field Values

Constructor Detail

InstructionAncestorRefsCpt

public InstructionAncestorRefsCpt()

Method Detail

getIndex

public abstract int getIndex()

Provides the reference to the constant pool table.

Specified by:

getIndex in interface InstructionRefsCpt

Returns:

int The index into the constant pool table

setIndex

public abstract void setIndex(int index)

Sets the reference to the constant pool table.

Specified by:

setIndex in interface InstructionRefsCpt

Parameters:

index - The index into the constant pool table

updateRefs

public int updateRefs(int offset)

This method implements the logic necessary to update all the references to constant pool table's entries contained within the bytecode instruction.

Specified by:

updateRefs in interface Instruction

Overrides:

updateRefs in class InstructionAncestor

Parameters:

offset - The offset used for updating expressed as number of cpt's entries to be skipped

Returns:

int The number of processed words within the current bytecode instruction

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Clone this instance.

Specified by:

clone in interface Instruction

Overrides:

clone in class InstructionAncestor

Returns:

The clone

Throws:

java.lang.CloneNotSupportedException