Class PropagationCallGraphBuilder.InstanceArrayStoreOperator

java.lang.Object

com.ibm.wala.fixpoint.AbstractOperator<PointsToSetVariable>

com.ibm.wala.fixpoint.UnaryOperator<PointsToSetVariable>

com.ibm.wala.ipa.callgraph.propagation.PropagationCallGraphBuilder.InstanceArrayStoreOperator

All Implemented Interfaces:

FixedPointConstants, IPointerOperator

Enclosing class:

PropagationCallGraphBuilder

public final class PropagationCallGraphBuilder.InstanceArrayStoreOperator
extends UnaryOperator<PointsToSetVariable>
implements IPointerOperator

Update the points-to-set for an array contents to include a particular instance key.

Field Summary

Fields inherited from interface FixedPointConstants

CHANGED, CHANGED_AND_FIXED, CHANGED_MASK, FIXED_MASK, NOT_CHANGED, NOT_CHANGED_AND_FIXED, SIDE_EFFECT_MASK

Modifier and Type	Field	Description
static final byte	CHANGED	A return value which indicates that a lhs has changed, and the statement might need to be evaluated again.
static final byte	CHANGED_AND_FIXED	A return value which indicates that lhs has changed, and the statement need not be evaluated again.
static final int	CHANGED_MASK	The bit-mask which defines the "CHANGED" flag
static final int	FIXED_MASK	The bit-mask which defines the "FIXED" flag
static final byte	NOT_CHANGED	A return value which indicates that lhs has not changed, and the statement might need to be evaluated again.
static final byte	NOT_CHANGED_AND_FIXED	A return value which indicates that lhs has not changed, and the statement need not be evaluated again.
static final int	SIDE_EFFECT_MASK	The bit-mask which defines the "SIDE EFFECT" flag

Constructor Summary

Constructors

Constructor	Description
InstanceArrayStoreOperator(InstanceKey instance)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
byte	evaluate(PointsToSetVariable dummyLHS, PointsToSetVariable arrayref)	Simply add the instance to each relevant points-to set.
int	hashCode()
boolean	isComplex()	Is the operator complex; i.e., might it give rise to new constraints?
String	toString()

Methods inherited from class UnaryOperator

evaluate, isIdentity, makeEquation

Modifier and Type	Method	Description
byte	evaluate(PointsToSetVariable lhs, PointsToSetVariable[] rhs)	Evaluate this equation, setting a new value for the left-hand side.
boolean	isIdentity()
UnaryStatement<PointsToSetVariable>	makeEquation(PointsToSetVariable lhs, PointsToSetVariable rhs)	Create an equation which uses this operator Override in subclasses for efficiency.

Methods inherited from class Object

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

Constructor Details

InstanceArrayStoreOperator

public InstanceArrayStoreOperator(InstanceKey instance)

Method Details

toString

public String toString()

Specified by:

toString in class AbstractOperator<PointsToSetVariable>

evaluate

public byte evaluate(PointsToSetVariable dummyLHS,
 PointsToSetVariable arrayref)

Simply add the instance to each relevant points-to set.

Specified by:

evaluate in class UnaryOperator<PointsToSetVariable>

Returns:

a constant defined by FixedPointConstants that reflects whether the lhs value changed

hashCode

public int hashCode()

Specified by:

hashCode in class AbstractOperator<PointsToSetVariable>

equals

public boolean equals(Object o)

Specified by:

equals in class AbstractOperator<PointsToSetVariable>

isComplex

public boolean isComplex()

Description copied from interface: IPointerOperator

Is the operator complex; i.e., might it give rise to new constraints?

Specified by:

isComplex in interface IPointerOperator