com.techtrader.modules.tools.bytecode
Class LookupSwitchInstruction

java.lang.Object
  |
  +--com.techtrader.modules.tools.bytecode.Instruction
        |
        +--com.techtrader.modules.tools.bytecode.JumpInstruction
              |
              +--com.techtrader.modules.tools.bytecode.LookupSwitchInstruction

public class LookupSwitchInstruction

extends JumpInstruction

The LOOKUPSWITCH instruction.

Author:

Abe White

Fields inherited from class com.techtrader.modules.tools.bytecode.JumpInstruction

_offset, _target

Fields inherited from class com.techtrader.modules.tools.bytecode.Instruction

_byteIndex, _opcode, _opcodeTypes, _owner

Constructor Summary

protected

LookupSwitchInstruction(Code owner)

Method Summary

void	acceptVisit(BCVisitor visit) Accept a visit from a BCVisitor, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this object.
void	addCase(int match, Instruction target)
int	getDefaultOffset() Synonymous with getOffset().
Instruction	getDefaultTarget() Synonymous with getTarget().
int	getLength() Return the length in bytes of this opcode, including all arguments.
int[]	getMatches()
int[]	getOffsets()
int	getStackChange() Return the number of stack positions this instruction pushes or pops during its execution.
Instruction[]	getTargets()
void	readData(DataInput in) Read the arguments for this opcode from the given stream.
void	setCases(int[] matches, Instruction[] targets) Set the match-jumppt pairs for this switch.
void	setCases(int[] matches, int[] offsets) Set the match-offset pairs for this switch.
void	setDefaultOffset(int offset) Synonymous with setOffset().
void	setDefaultTarget(Instruction ins) Synonymous with setTarget().
void	setMarkers(List inss) Use the byte indexes read from the .class file to calculate and set references to the target instruction(s) for this ptr.
void	writeData(DataOutput out) Write the arguments for this opcode to the given stream.

Methods inherited from class com.techtrader.modules.tools.bytecode.JumpInstruction

copy, equals, getOffset, getTarget, setOffset, setTarget

Methods inherited from class com.techtrader.modules.tools.bytecode.Instruction

getByteIndex, getName, getOpCode, getOwner, invalidate, setByteIndex, setOpCode

Methods inherited from class java.lang.Object

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

Constructor Detail

LookupSwitchInstruction

protected LookupSwitchInstruction(Code owner)

Method Detail

getDefaultTarget

public Instruction getDefaultTarget()

Synonymous with getTarget().

setDefaultTarget

public void setDefaultTarget(Instruction ins)

Synonymous with setTarget().

getDefaultOffset

public int getDefaultOffset()

Synonymous with getOffset().

setDefaultOffset

public void setDefaultOffset(int offset)

Synonymous with setOffset().

setCases

public void setCases(int[] matches,
                     Instruction[] targets)

Set the match-jumppt pairs for this switch.

setCases

public void setCases(int[] matches,
                     int[] offsets)

Set the match-offset pairs for this switch.

getMatches

public int[] getMatches()

getTargets

public Instruction[] getTargets()

getOffsets

public int[] getOffsets()

addCase

public void addCase(int match,
                    Instruction target)

getLength

public int getLength()

Description copied from class: Instruction

Return the length in bytes of this opcode, including all arguments. This method should be overridden by opcodes that take arguments.

Overrides:

getLength in class JumpInstruction

getStackChange

public int getStackChange()

Description copied from class: Instruction

Return the number of stack positions this instruction pushes or pops during its execution.

Overrides:

getStackChange in class JumpInstruction

Tags copied from class: Instruction

Returns:

0 if the stack is not affected by this instruction, a positive number if it pushes onto the stack, and a negative number if it pops from the stack

readData

public void readData(DataInput in)
              throws IOException

Description copied from class: Instruction

Read the arguments for this opcode from the given stream. This method should be overridden by opcodes that take arguments.

Overrides:

readData in class JumpInstruction

writeData

public void writeData(DataOutput out)
               throws IOException

Description copied from class: Instruction

Write the arguments for this opcode to the given stream. This method should be overridden by opcodes that take arguments.

Overrides:

writeData in class JumpInstruction

setMarkers

public void setMarkers(List inss)

Description copied from interface: InstructionPtr

Use the byte indexes read from the .class file to calculate and set references to the target instruction(s) for this ptr. This method will be called after the byte code has been read in for the first time.

Overrides:

setMarkers in class JumpInstruction

Tags copied from interface: InstructionPtr

Parameters:

codes - the list of opcodes in the method

acceptVisit

public void acceptVisit(BCVisitor visit)

Description copied from interface: VisitAcceptor

Accept a visit from a BCVisitor, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this object.

Overrides:

acceptVisit in class JumpInstruction