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

java.lang.Object
  com.ibm.wala.fixedpoint.impl.AbstractOperator
      com.ibm.wala.fixedpoint.impl.UnaryOperator
          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

protected MutableIntSet

priorInstances

Fields inherited from interface com.ibm.wala.fixpoint.FixedPointConstants

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

Constructor Summary

PropagationCallGraphBuilder.PutFieldOperator(IField field, PointsToSetVariable val)

Method Summary

boolean	equals(java.lang.Object o)
byte	evaluate(IVariable rhs)
protected IntSet	filterInstances(IntSet value) Subclasses can override as needed
protected IField	getField()
UnaryOperator	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.
java.lang.String	toString()

Methods inherited from class com.ibm.wala.ipa.callgraph.propagation.UnarySideEffect

evaluate, replaceFixedSet

Methods inherited from class com.ibm.wala.fixedpoint.impl.UnaryOperator

evaluate, isIdentity, makeEquation

Methods inherited from class java.lang.Object

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

Field Detail

priorInstances

protected final MutableIntSet priorInstances

Constructor Detail

PropagationCallGraphBuilder.PutFieldOperator

public PropagationCallGraphBuilder.PutFieldOperator(IField field,
                                                    PointsToSetVariable val)

Method Detail

toString

public java.lang.String toString()

Specified by:

toString in class AbstractOperator

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(IVariable rhs)

Specified by:

evaluate in class UnarySideEffect

filterInstances

protected IntSet filterInstances(IntSet value)

Subclasses can override as needed

Parameters:

value -

Returns:

an IntSet

hashCode

public int hashCode()

Overrides:

hashCode in class UnarySideEffect

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class UnarySideEffect

getPutAssignmentOperator

public UnaryOperator 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