wugle.expression
Class AbstractUnaryOperator

java.lang.Object
  |
  +--wugle.expression.AbstractExpression
        |
        +--wugle.expression.AbstractUnaryOperator

All Implemented Interfaces:

java.lang.Cloneable, Expression, Operator, UnaryOperator

Direct Known Subclasses:

Not

public abstract class AbstractUnaryOperator

extends AbstractExpression

implements UnaryOperator

An abstract implementation of UnaryOperator.

AbstractUnaryOperator provides a basic implementation of UnaryOperator, but is not meant to be a full class. Subclasses should implement the appropriate operation interfaces.

Version:

0.1.3

Author:

Jacob Perkins

Field Summary

Fields inherited from class wugle.expression.AbstractExpression

log, operation

Constructor Summary

AbstractUnaryOperator(java.lang.String symbol, ExpressionOperation operation, Expression child)
Initializes the Expression and sets the initial child Expression.

Method Summary

java.lang.Object	clone() Returns a copy of this Expression.
Expression	getChild() Gets the child Expression.
boolean	isEqual(Expression expression) Tests if this Expression is equal to the given Expression.
void	setChild(Expression child) Sets the child Expression.
void	setChild(Expression oldChild, Expression newChild) Replaces a current child Expression with a new child Expression
java.lang.String	toString() Gets the String representation of the Expression.

Methods inherited from class wugle.expression.AbstractExpression

getParent, getSymbol, setParent

Methods inherited from class java.lang.Object

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

Methods inherited from interface wugle.expression.Expression

getParent, getSymbol, setParent

Constructor Detail

AbstractUnaryOperator

public AbstractUnaryOperator(java.lang.String symbol,
                             ExpressionOperation operation,
                             Expression child)

Initializes the Expression and sets the initial child Expression.

Parameters:

symbol - Symbol representing this Operator

operation - Object for delegating operations to

child - Child Expression

Method Detail

toString

public java.lang.String toString()

Description copied from class: AbstractExpression

Gets the String representation of the Expression.

Overrides:

toString in class AbstractExpression

Returns:

The symbol representing the Expression

See Also:

AbstractExpression.getSymbol()

clone

public java.lang.Object clone()

Description copied from interface: Expression

Returns a copy of this Expression.

Specified by:

clone in interface Expression

Overrides:

clone in class AbstractExpression

Returns:

Copy of the Expression

isEqual

public boolean isEqual(Expression expression)

Description copied from interface: Expression

Tests if this Expression is equal to the given Expression.

Specified by:

isEqual in interface Expression

Parameters:

expression - Expression to compare to

Returns:

true if they are equal

setChild

public void setChild(Expression oldChild,
                     Expression newChild)

Description copied from interface: Operator

Replaces a current child Expression with a new child Expression

Specified by:

setChild in interface Operator

Parameters:

oldChild - Child Expression to replace

newChild - Replacement child Expression

See Also:

setChild(Expression)

getChild

public Expression getChild()

Description copied from interface: UnaryOperator

Gets the child Expression.

Specified by:

getChild in interface UnaryOperator

Returns:

The child Expression, or null if none

See Also:

UnaryOperator.setChild(Expression)

setChild

public void setChild(Expression child)

Description copied from interface: UnaryOperator

Sets the child Expression.

Specified by:

setChild in interface UnaryOperator

Parameters:

child - The new child Expression, or null for no child

See Also:

UnaryOperator.getChild()