com.ibm.wala.dataflow.graph
Class BitVectorFilter

java.lang.Object
  com.ibm.wala.fixpoint.AbstractOperator<T>
      com.ibm.wala.fixpoint.UnaryOperator<BitVectorVariable>
          com.ibm.wala.dataflow.graph.BitVectorFilter

All Implemented Interfaces:

FixedPointConstants

public class BitVectorFilter
extends UnaryOperator<BitVectorVariable>

Operator OUT = IN - filterSet

Field Summary

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

BitVectorFilter(BitVector mask)

Method Summary

boolean	equals(java.lang.Object o)
byte	evaluate(BitVectorVariable lhs, BitVectorVariable rhs) Evaluate this equation, setting a new value for the left-hand side.
int	hashCode()
java.lang.String	toString()

Methods inherited from class com.ibm.wala.fixpoint.UnaryOperator

evaluate, isIdentity, makeEquation

Methods inherited from class java.lang.Object

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

Constructor Detail

BitVectorFilter

public BitVectorFilter(BitVector mask)

Method Detail

evaluate

public byte evaluate(BitVectorVariable lhs,
                     BitVectorVariable rhs)
              throws java.lang.IllegalArgumentException

Description copied from class: UnaryOperator

Evaluate this equation, setting a new value for the left-hand side.

Specified by:

evaluate in class UnaryOperator<BitVectorVariable>

Returns:

true if the lhs value changes. false otherwise.

Throws:

java.lang.IllegalArgumentException

toString

public java.lang.String toString()

Specified by:

toString in class AbstractOperator<BitVectorVariable>

See Also:

Object.toString()

hashCode

public int hashCode()

Specified by:

hashCode in class AbstractOperator<BitVectorVariable>

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in class AbstractOperator<BitVectorVariable>