org.lsmp.djep.sjep
Class AbstractPNode

java.lang.Object
  org.lsmp.djep.sjep.AbstractPNode

All Implemented Interfaces:

PNodeI

Direct Known Subclasses:

Monomial, PConstant, PFunction, Polynomial, POperator, PVariable

public abstract class AbstractPNode
extends java.lang.Object
implements PNodeI

Default methods, when more specific methods do not work.

Author:

Rich Morris Created on 22-Dec-2004

Field Summary

protected PolynomialCreator

pc A reference to the PolynomialCreator instance.

Constructor Summary

AbstractPNode(PolynomialCreator pc)

Method Summary

PNodeI	add(PNodeI node) Adds a node to this one.
int	compareTo(PNodeI node) this < arg ---> -1 this > arg ---> 1
PNodeI	div(PNodeI node) Divides this by the argument.
boolean	equals(PNodeI node) True is nodes represent the same parse trees
PNodeI	invert() inverts node i.e. 1/x
boolean	isOne() True if node represents one
boolean	isZero() True if node represents zero
PNodeI	mul(PNodeI node) Multiplies this by the argument.
PNodeI	negate() negates node i.e.
PNodeI	pow(PNodeI node) Raise this to the argument.
PNodeI	sub(PNodeI node) Subtracts the argument from this.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.lsmp.djep.sjep.PNodeI

equals, expand, toNode, toString

Field Detail

pc

protected PolynomialCreator pc

A reference to the PolynomialCreator instance.

Constructor Detail

AbstractPNode

public AbstractPNode(PolynomialCreator pc)

Method Detail

add

public PNodeI add(PNodeI node)
           throws ParseException

Description copied from interface: PNodeI

Adds a node to this one.

Specified by:

add in interface PNodeI

Throws:

ParseException

sub

public PNodeI sub(PNodeI node)
           throws ParseException

Description copied from interface: PNodeI

Subtracts the argument from this.

Specified by:

sub in interface PNodeI

Throws:

ParseException

negate

public PNodeI negate()
              throws ParseException

Description copied from interface: PNodeI

negates node i.e. -x

Specified by:

negate in interface PNodeI

Throws:

ParseException

mul

public PNodeI mul(PNodeI node)
           throws ParseException

Description copied from interface: PNodeI

Multiplies this by the argument.

Specified by:

mul in interface PNodeI

Throws:

ParseException

div

public PNodeI div(PNodeI node)
           throws ParseException

Description copied from interface: PNodeI

Divides this by the argument.

Specified by:

div in interface PNodeI

Throws:

ParseException

invert

public PNodeI invert()
              throws ParseException

Description copied from interface: PNodeI

inverts node i.e. 1/x

Specified by:

invert in interface PNodeI

Throws:

ParseException

pow

public PNodeI pow(PNodeI node)
           throws ParseException

Description copied from interface: PNodeI

Raise this to the argument.

Specified by:

pow in interface PNodeI

Throws:

ParseException

equals

public boolean equals(PNodeI node)

Description copied from interface: PNodeI

True is nodes represent the same parse trees

Specified by:

equals in interface PNodeI

isZero

public boolean isZero()

Description copied from interface: PNodeI

True if node represents zero

Specified by:

isZero in interface PNodeI

isOne

public boolean isOne()

Description copied from interface: PNodeI

True if node represents one

Specified by:

isOne in interface PNodeI

compareTo

public int compareTo(PNodeI node)

this < arg ---> -1 this > arg ---> 1

Specified by:

compareTo in interface PNodeI