Package org.apache.bcel.verifier.structurals

Class LocalVariables

java.lang.Object

org.apache.bcel.verifier.structurals.LocalVariables

All Implemented Interfaces:

Cloneable

public class LocalVariables
extends Object
implements Cloneable

This class implements an array of local variables used for symbolic JVM simulation.

Constructor Summary

Constructors

Constructor	Description
LocalVariables(int localVariableCount)	Creates a new LocalVariables object.

Method Summary

Modifier and Type	Method	Description
Object	clone()	Returns a deep copy of this object; i.e.
boolean	equals(Object o)
Type	get(int slotIndex)	Returns the type of the local variable slot index.
LocalVariables	getClone()	Returns a (correctly typed) clone of this object.
int	hashCode()
void	initializeObject(UninitializedObjectType uninitializedObjectType)	Replaces all occurrences of uninitializedObjectType in this local variables set with an "initialized" ObjectType.
int	maxLocals()	Returns the number of local variable slots.
void	merge(LocalVariables localVariable)	Merges two local variables sets as described in the Java Virtual Machine Specification, Second Edition, section 4.9.2, page 146.
void	set(int slotIndex, Type type)	Sets a new Type for the given local variable slot.
String	toString()	Returns a String representation of this object.

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalVariables

public LocalVariables(int localVariableCount)

Creates a new LocalVariables object.

Parameters:

localVariableCount - local variable count.

Method Detail

clone

public Object clone()

Returns a deep copy of this object; i.e. the clone operates on a new local variable array. However, the Type objects in the array are shared.

Overrides:

clone in class Object

get

public Type get(int slotIndex)

Returns the type of the local variable slot index.

Parameters:

slotIndex - Slot to look up.

Returns:

the type of the local variable slot index.

getClone

public LocalVariables getClone()

Returns a (correctly typed) clone of this object. This is equivalent to ((LocalVariables) this.clone()).

Returns:

a (correctly typed) clone of this object.

maxLocals

public int maxLocals()

Returns the number of local variable slots.

Returns:

the number of local variable slots.

set

public void set(int slotIndex,
                Type type)

Sets a new Type for the given local variable slot.

Parameters:

slotIndex - Target slot index.

type - Type to save at the given slot index.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

Returns:

a hash code value for the object.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

merge

public void merge(LocalVariables localVariable)

Merges two local variables sets as described in the Java Virtual Machine Specification, Second Edition, section 4.9.2, page 146.

Parameters:

localVariable - other local variable.

toString

public String toString()

Returns a String representation of this object.

Overrides:

toString in class Object

initializeObject

public void initializeObject(UninitializedObjectType uninitializedObjectType)

Replaces all occurrences of uninitializedObjectType in this local variables set with an "initialized" ObjectType.

Parameters:

uninitializedObjectType - the object to match.