Class PrefixTransferFunction

java.lang.Object

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

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

org.scandroid.prefixtransfer.PrefixTransferFunction

All Implemented Interfaces:

FixedPointConstants

public class PrefixTransferFunction
extends UnaryOperator<PrefixVariable>

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
PrefixTransferFunction(InstanceKeySite node)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
byte	evaluate(PrefixVariable lhs, PrefixVariable rhs)	Evaluate this equation, setting a new value for the left-hand side.
int	hashCode()
String	toString()

Methods inherited from class UnaryOperator

evaluate, isIdentity, makeEquation

Modifier and Type	Method	Description
byte	evaluate(PrefixVariable lhs, PrefixVariable[] rhs)	Evaluate this equation, setting a new value for the left-hand side.
boolean	isIdentity()
UnaryStatement<PrefixVariable>	makeEquation(PrefixVariable lhs, PrefixVariable 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

PrefixTransferFunction

public PrefixTransferFunction(InstanceKeySite node)

Method Details

evaluate

public byte evaluate(PrefixVariable lhs,
 PrefixVariable rhs)

Description copied from class: UnaryOperator

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

Specified by:

evaluate in class UnaryOperator<PrefixVariable>

Returns:

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

equals

public boolean equals(Object o)

Specified by:

equals in class AbstractOperator<PrefixVariable>

hashCode

public int hashCode()

Specified by:

hashCode in class AbstractOperator<PrefixVariable>

toString

public String toString()

Specified by:

toString in class AbstractOperator<PrefixVariable>