de.fub.bytecode.generic
Class LocalVariableGen

java.lang.Object
  |
  +--de.fub.bytecode.generic.LocalVariableGen

All Implemented Interfaces:

java.lang.Cloneable, InstructionTargeter, NamedAndTyped

public class LocalVariableGen

extends java.lang.Object

implements InstructionTargeter, NamedAndTyped, java.lang.Cloneable

This class represents a local variable within a method. It contains its scope, name and type. The generated LocalVariable object can be obtained with getLocalVariable which needs the instruction list and the constant pool as parameters.

Version:

$Id: LocalVariableGen.java,v 1.5 2001/05/09 09:26:57 dahm Exp $

Author:

M. Dahm

See Also:

LocalVariable, MethodGen

Constructor Summary

LocalVariableGen(int index, java.lang.String name, Type type, InstructionHandle start, InstructionHandle end)
Generate a local variable that with index `index'.

Method Summary

java.lang.Object	clone()
boolean	containsTarget(InstructionHandle ih)
boolean	equals(java.lang.Object o) We consider to local variables to be equal, if the use the same index and are valid in the same range.
InstructionHandle	getEnd()
int	getIndex()
LocalVariable	getLocalVariable(ConstantPoolGen cp) Get LocalVariable object.
java.lang.String	getName()
int	getSlot() Deprecated. Use getIndex()
InstructionHandle	getStart()
Type	getType()
void	setEnd(InstructionHandle end)
void	setIndex(int index)
void	setName(java.lang.String name)
void	setSlot(int index) Deprecated. Use setIndex()
void	setStart(InstructionHandle start)
void	setType(Type type)
java.lang.String	toString()
void	updateTarget(InstructionHandle old_ih, InstructionHandle new_ih)

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LocalVariableGen

public LocalVariableGen(int index,
                        java.lang.String name,
                        Type type,
                        InstructionHandle start,
                        InstructionHandle end)

Generate a local variable that with index `index'. Note that double and long variables need two indexs. Index indices have to be provided by the user.

Parameters:

index - index of local variable

name - its name

type - its type

start - from where the instruction is valid (null means from the start)

end - until where the instruction is valid (null means to the end)

Method Detail

getLocalVariable

public LocalVariable getLocalVariable(ConstantPoolGen cp)

Get LocalVariable object. This relies on that the instruction list has already been dumped to byte code or or that the `setPositions' methods has been called for the instruction list.

Parameters:

il - instruction list (byte code) which this variable belongs to

cp - constant pool

setIndex

public void setIndex(int index)

getIndex

public int getIndex()

setName

public void setName(java.lang.String name)

Specified by:

setName in interface NamedAndTyped

getName

public java.lang.String getName()

Specified by:

getName in interface NamedAndTyped

setType

public void setType(Type type)

Specified by:

setType in interface NamedAndTyped

getType

public Type getType()

Specified by:

getType in interface NamedAndTyped

getStart

public InstructionHandle getStart()

getEnd

public InstructionHandle getEnd()

setStart

public void setStart(InstructionHandle start)

setEnd

public void setEnd(InstructionHandle end)

updateTarget

public void updateTarget(InstructionHandle old_ih,
                         InstructionHandle new_ih)

Specified by:

updateTarget in interface InstructionTargeter

Parameters:

old_ih - old target, either start or end

new_ih - new target

containsTarget

public boolean containsTarget(InstructionHandle ih)

Specified by:

containsTarget in interface InstructionTargeter

Returns:

true, if ih is target of this variable

equals

public boolean equals(java.lang.Object o)

We consider to local variables to be equal, if the use the same index and are valid in the same range.

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

setSlot

public void setSlot(int index)

Deprecated. Use setIndex()

getSlot

public int getSlot()

Deprecated. Use getIndex()