dk.brics.xact.analysis.xmlgraph
Enum EBooleanLattice

java.lang.Object
  java.lang.Enum<EBooleanLattice>
      dk.brics.xact.analysis.xmlgraph.EBooleanLattice

All Implemented Interfaces:

Serializable, Comparable<EBooleanLattice>

public enum EBooleanLattice
extends Enum<EBooleanLattice>

Represents the lattice:

      MAYBE
      /   \
    YES    NO
      \   /
      BOTTOM
 

The meaning of "yes" and "no" is not specified here – it depends on the context of its use.

Enum Constant Summary

BOTTOM

MAYBE

NO

YES

Method Summary

EBooleanLattice	and(EBooleanLattice lat) Returns the possible results of a logical AND between two booleans.
boolean	definitely() Returns true if this is YES or BOTTOM
boolean	definitelyNot() Returns true if this is NO or BOTTOM
EBooleanLattice	greatestLowerBound(EBooleanLattice lat) Returns the greatest lower bound of two lattice points.
EBooleanLattice	leastUpperBound(EBooleanLattice lat) Returns the least upper bound of two lattice points.
boolean	maybe() Returns true if this is YES or MAYBE
boolean	maybeNot() Returns true if this is NO or MAYBE
EBooleanLattice	or(EBooleanLattice lat) Returns the possible results of a logical AND between two booleans.
static EBooleanLattice	valueOf(String name) Returns the enum constant of this type with the specified name.
static EBooleanLattice[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

BOTTOM

public static final EBooleanLattice BOTTOM

MAYBE

public static final EBooleanLattice MAYBE

NO

public static final EBooleanLattice NO

YES

public static final EBooleanLattice YES

Method Detail

and

public EBooleanLattice and(EBooleanLattice lat)

Returns the possible results of a logical AND between two booleans. BOTTOM will be returned if either operand is BOTTOM.

definitely

public boolean definitely()

Returns true if this is YES or BOTTOM

definitelyNot

public boolean definitelyNot()

Returns true if this is NO or BOTTOM

greatestLowerBound

public EBooleanLattice greatestLowerBound(EBooleanLattice lat)

Returns the greatest lower bound of two lattice points.

leastUpperBound

public EBooleanLattice leastUpperBound(EBooleanLattice lat)

Returns the least upper bound of two lattice points.

maybe

public boolean maybe()

Returns true if this is YES or MAYBE

maybeNot

public boolean maybeNot()

Returns true if this is NO or MAYBE

or

public EBooleanLattice or(EBooleanLattice lat)

Returns the possible results of a logical AND between two booleans. BOTTOM will be returned if either operand is BOTTOM.

valueOf

public static EBooleanLattice valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

values

public static EBooleanLattice[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (EBooleanLattice c : EBooleanLattice.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared