Class PropagationCallGraphBuilder.PutFieldOperator

java.lang.Object

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

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

com.ibm.wala.ipa.callgraph.propagation.UnarySideEffect

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

All Implemented Interfaces:

FixedPointConstants, IPointerOperator

Enclosing class:

PropagationCallGraphBuilder

public class PropagationCallGraphBuilder.PutFieldOperator
extends UnarySideEffect
implements IPointerOperator

Operator that represents a putfield

Field Summary

Fields

Modifier and Type	Field	Description
protected final MutableIntSet	priorInstances

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
PutFieldOperator(IField field, PointsToSetVariable val)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
byte	evaluate(PointsToSetVariable rhs)
protected IntSet	filterInstances(IntSet value)	Subclasses can override as needed
protected IField	getField()
UnaryOperator<PointsToSetVariable>	getPutAssignmentOperator()	subclasses (e.g.
int	hashCode()
boolean	isComplex()	Is the operator complex; i.e., might it give rise to new constraints?
protected boolean	isLoadOperator()	A "load" operator generates defs of the fixed set.
String	toString()

Methods inherited from class UnarySideEffect

evaluate, replaceFixedSet

Modifier and Type	Method	Description
final byte	evaluate(PointsToSetVariable lhs, PointsToSetVariable rhs)	Evaluate this equation, setting a new value for the left-hand side.
void	replaceFixedSet(PointsToSetVariable p)	Update the fixed points-to-set associated with this side effect.

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

Field Details

priorInstances

protected final MutableIntSet priorInstances

Constructor Details

PutFieldOperator

public PutFieldOperator(IField field,
 PointsToSetVariable val)

Method Details

toString

public String toString()

Specified by:

toString 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

evaluate

public byte evaluate(PointsToSetVariable rhs)

Specified by:

evaluate in class UnarySideEffect

filterInstances

protected IntSet filterInstances(IntSet value)

Subclasses can override as needed

hashCode

public int hashCode()

Overrides:

hashCode in class UnarySideEffect

equals

public boolean equals(Object o)

Overrides:

equals in class UnarySideEffect

getPutAssignmentOperator

public UnaryOperator<PointsToSetVariable> getPutAssignmentOperator()

subclasses (e.g. XTA) can override this to enforce a filtered assignment. returns null if there's a problem.

getField

protected IField getField()

Returns:

Returns the field.

isLoadOperator

protected boolean isLoadOperator()

Description copied from class: UnarySideEffect

A "load" operator generates defs of the fixed set. A "store" operator generates uses of the fixed set.

Specified by:

isLoadOperator in class UnarySideEffect