tom.engine.adt.tomconstraint.types.constraint
Class EmptyOrConstraint

java.lang.Object
  tom.engine.adt.tomconstraint.TomConstraintAbstractType
      tom.engine.adt.tomconstraint.types.Constraint
          tom.engine.adt.tomconstraint.types.constraint.OrConstraint
              tom.engine.adt.tomconstraint.types.constraint.EmptyOrConstraint

All Implemented Interfaces:

Comparable, Iterable<Constraint>, Collection<Constraint>, shared.SharedObject, shared.SharedObjectWithID, Visitable

public final class EmptyOrConstraint
extends OrConstraint
implements Visitable

Field Summary

Fields inherited from class tom.engine.adt.tomconstraint.types.Constraint

idConv

Fields inherited from class tom.engine.adt.tomconstraint.TomConstraintAbstractType

atermFactory, factory

Method Summary

int	compareTo(Object o) Compares two terms.
int	compareToLPO(Object o) Compares two terms.
shared.SharedObject	duplicate() Copy the object and returns the copy
boolean	equivalent(shared.SharedObject obj) Checks if a SharedObject is equivalent to the current object
static Constraint	fromTerm(aterm.ATerm trm, ATermConverter atConv) Apply a conversion on the ATerm contained in the String and returns a tom.engine.adt.tomconstraint.types.Constraint from it
Visitable	getChildAt(int index) Returns the child at the specified index
int	getChildCount() Returns the number of childs of the term
Visitable[]	getChildren() Returns the whole children of the term
int	hashCode() Returns hashCode
protected static int	hashFunction() Compute a hashcode for this term.
boolean	isEmptyOrConstraint() Returns true if the term is rooted by the symbol EmptyOrConstraint
static Constraint	make() Constructor that builds a term rooted by EmptyOrConstraint
Visitable	setChildAt(int index, Visitable v) Set the child at the specified index
Visitable	setChildren(Visitable[] childs) Set children to the term
String	symbolName() Returns the name of the symbol
aterm.ATerm	toATerm() Returns an ATerm representation of this term.

Methods inherited from class tom.engine.adt.tomconstraint.types.constraint.OrConstraint

add, addAll, append, clear, contains, containsAll, fromArray, getCollection, getCollectionOrConstraint, isEmpty, iterator, length, remove, removeAll, retainAll, reverse, size, toArray, toArray, toStringBuilder

Methods inherited from class tom.engine.adt.tomconstraint.types.Constraint

fromStream, fromStream, fromString, fromString, fromTerm, getAstType, getBQTerm, getc, getCollectionAndConstraint, getCollectionOrConstraintDisjunction, getConstraint, getHeadAndConstraint, getHeadOrConstraint, getHeadOrConstraintDisjunction, getIndex, getLeft, getOpname, getPattern, getRight, getSubject, getTailAndConstraint, getTailOrConstraint, getTailOrConstraintDisjunction, getType, getVar, getVariable, isAliasTo, isAntiMatchConstraint, isAssignPositionTo, isConsAndConstraint, isConsOrConstraint, isConsOrConstraintDisjunction, isEmptyAndConstraint, isEmptyArrayConstraint, isEmptyListConstraint, isEmptyOrConstraintDisjunction, isFalseConstraint, isIsSortConstraint, isMatchConstraint, isNegate, isNumericConstraint, isTrueConstraint, setAstType, setBQTerm, setc, setConstraint, setHeadAndConstraint, setHeadOrConstraint, setHeadOrConstraintDisjunction, setIndex, setLeft, setOpname, setPattern, setRight, setSubject, setTailAndConstraint, setTailOrConstraint, setTailOrConstraintDisjunction, setType, setVar, setVariable

Methods inherited from class tom.engine.adt.tomconstraint.TomConstraintAbstractType

convertATermToBoolean, convertATermToChar, convertATermToDouble, convertATermToFloat, convertATermToInt, convertATermToLong, convertATermToString, getUniqueIdentifier, setUniqueIdentifier, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

equals

Method Detail

make

public static Constraint make()

Constructor that builds a term rooted by EmptyOrConstraint

Returns:

a term rooted by EmptyOrConstraint

symbolName

public String symbolName()

Returns the name of the symbol

Specified by:

symbolName in class TomConstraintAbstractType

Returns:

the name of the symbol

duplicate

public shared.SharedObject duplicate()

Copy the object and returns the copy

Specified by:

duplicate in interface shared.SharedObject

Returns:

a clone of the SharedObject

compareToLPO

public int compareToLPO(Object o)

Compares two terms. This functions implements a total lexicographic path ordering.

Specified by:

compareToLPO in class TomConstraintAbstractType

Parameters:

o - object to which this term is compared

Returns:

a negative integer, zero, or a positive integer as this term is less than, equal to, or greater than the argument

Throws:

ClassCastException - in case of invalid arguments

RuntimeException - if unable to compare childs

compareTo

public int compareTo(Object o)

Compares two terms. This functions implements a total order.

Specified by:

compareTo in interface Comparable

Specified by:

compareTo in class TomConstraintAbstractType

Parameters:

o - object to which this term is compared

Returns:

a negative integer, zero, or a positive integer as this term is less than, equal to, or greater than the argument

Throws:

ClassCastException - in case of invalid arguments

RuntimeException - if unable to compare childs

hashCode

public final int hashCode()

Returns hashCode

Specified by:

hashCode in interface Collection<Constraint>

Specified by:

hashCode in interface shared.SharedObject

Overrides:

hashCode in class Object

Returns:

hashCode

equivalent

public final boolean equivalent(shared.SharedObject obj)

Checks if a SharedObject is equivalent to the current object

Specified by:

equivalent in interface shared.SharedObject

Parameters:

obj - SharedObject to test

Returns:

true if obj is a EmptyOrConstraint and its members are equal, else false

isEmptyOrConstraint

public boolean isEmptyOrConstraint()

Returns true if the term is rooted by the symbol EmptyOrConstraint

Overrides:

isEmptyOrConstraint in class Constraint

Returns:

true, because this is rooted by EmptyOrConstraint

toATerm

public aterm.ATerm toATerm()

Returns an ATerm representation of this term.

Overrides:

toATerm in class OrConstraint

Returns:

an ATerm representation of this term.

fromTerm

public static Constraint fromTerm(aterm.ATerm trm,
                                  ATermConverter atConv)

Apply a conversion on the ATerm contained in the String and returns a tom.engine.adt.tomconstraint.types.Constraint from it

Parameters:

trm - ATerm to convert into a Gom term

atConv - ATerm Converter used to convert the ATerm

Returns:

the Gom term

getChildCount

public int getChildCount()

Returns the number of childs of the term

Specified by:

getChildCount in interface Visitable

Returns:

the number of childs of the term

getChildAt

public Visitable getChildAt(int index)

Returns the child at the specified index

Specified by:

getChildAt in interface Visitable

Parameters:

index - index of the child to return; must be nonnegative and less than the childCount

Returns:

the child at the specified index

Throws:

IndexOutOfBoundsException - if the index out of range

setChildAt

public Visitable setChildAt(int index,
                            Visitable v)

Set the child at the specified index

Specified by:

setChildAt in interface Visitable

Parameters:

index - index of the child to set; must be nonnegative and less than the childCount

v - child to set at the specified index

Returns:

the child which was just set

Throws:

IndexOutOfBoundsException - if the index out of range

setChildren

public Visitable setChildren(Visitable[] childs)

Set children to the term

Specified by:

setChildren in interface Visitable

Parameters:

childs - array of children to set

Returns:

an array of children which just were set

Throws:

IndexOutOfBoundsException - if length of "childs" is different than 0

getChildren

public Visitable[] getChildren()

Returns the whole children of the term

Specified by:

getChildren in interface Visitable

Returns:

the children of the term

hashFunction

protected static int hashFunction()

Compute a hashcode for this term. (for internal use)

Returns:

a hash value