proguard.evaluation

Class Variables

java.lang.Object

proguard.evaluation.Variables

Direct Known Subclasses:

TracedVariables

public class Variables
extends Object

This class represents a local variable frame that contains Value objects. Values are generalizations of all values that have been stored in the respective variables.

Author:

Eric Lafortune

Field Summary

Fields

Modifier and Type	Field and Description
protected int	size
protected Value[]	values

Constructor Summary

Constructors

Constructor and Description
Variables(int size) Creates a new Variables object with a given maximum number of variables.
Variables(Variables variables) Creates a Variables object that is a copy of the given Variables object.

Method Summary

Methods

Modifier and Type	Method and Description
ReferenceValue	aload(int index) Loads the ReferenceValue from the variable with the given index.
DoubleValue	dload(int index) Loads the DoubleValue from the variable with the given index.
boolean	equals(Object object)
FloatValue	fload(int index) Loads the FloatValue from the variable with the given index.
boolean	generalize(Variables other, boolean clearConflictingOtherVariables) Generalizes the values of this Variables object with the values of the given Variables object.
Value	getValue(int index) Gets the Value of the variable with the given index, without disturbing it.
int	hashCode()
IntegerValue	iload(int index) Loads the IntegerValue from the variable with the given index.
void	initialize(Variables other) Initializes the values of this Variables object with the values of the given Variables object.
LongValue	lload(int index) Loads the LongValue from the variable with the given index.
Value	load(int index) Loads the Value from the variable with the given index.
InstructionOffsetValue	oload(int index) Loads the InstructionOffsetValue from the variable with the given index.
void	reset(int size) Resets this Variables object, so that it can be reused.
int	size() Returns the number of variables.
void	store(int index, Value value) Stores the given Value at the given variable index.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

values

protected Value[] values

size

protected int size

Constructor Detail

Variables

public Variables(int size)

Creates a new Variables object with a given maximum number of variables.

Variables

public Variables(Variables variables)

Creates a Variables object that is a copy of the given Variables object.

Method Detail

reset

public void reset(int size)

Resets this Variables object, so that it can be reused.

initialize

public void initialize(Variables other)

Initializes the values of this Variables object with the values of the given Variables object. The other object may have fewer values, in which case the remaining values are left unchanged.

generalize

public boolean generalize(Variables other,
                 boolean clearConflictingOtherVariables)

Generalizes the values of this Variables object with the values of the given Variables object.

Parameters:

clearConflictingOtherVariables - specifies whether the other variables should be cleared too, in case of conflicts.

Returns:

whether the generalization has made any difference.

size

public int size()

Returns the number of variables.

getValue

public Value getValue(int index)

Gets the Value of the variable with the given index, without disturbing it.

store

public void store(int index,
         Value value)

Stores the given Value at the given variable index.

load

public Value load(int index)

Loads the Value from the variable with the given index.

iload

public IntegerValue iload(int index)

Loads the IntegerValue from the variable with the given index.

lload

public LongValue lload(int index)

Loads the LongValue from the variable with the given index.

fload

public FloatValue fload(int index)

Loads the FloatValue from the variable with the given index.

dload

public DoubleValue dload(int index)

Loads the DoubleValue from the variable with the given index.

aload

public ReferenceValue aload(int index)

Loads the ReferenceValue from the variable with the given index.

oload

public InstructionOffsetValue oload(int index)

Loads the InstructionOffsetValue from the variable with the given index.

equals

public boolean equals(Object object)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object