net.sf.jga.fn.logical
Class UnaryNegate<T>

java.lang.Object
  net.sf.jga.fn.Functor<R>
      net.sf.jga.fn.UnaryFunctor<T,java.lang.Boolean>
          net.sf.jga.fn.logical.UnaryNegate<T>

All Implemented Interfaces:

java.io.Serializable, Visitable

public class UnaryNegate<T>
extends UnaryFunctor<T,java.lang.Boolean>

Unary Predicate that logically negates the result of a child predicate. Returns true when child predicate p returns false given object argument x.

Copyright © 2002-2005 David A. Hall

Author:

David A. Hall

See Also:

Serialized Form

Nested Class Summary

static interface

UnaryNegate.Visitor Interface for classes that may interpret a UnaryNegate predicate.

Constructor Summary

UnaryNegate(UnaryFunctor<? super T,java.lang.Boolean> p)
Builds a UnaryNegate predicate wrapping the given Unary Predicate.

Method Summary

void	accept(Visitor v) Calls the Visitor's visit(UnaryNegate) method, if it implements the nested Visitor interface.
java.lang.Boolean	fn(T x) Given argument x, returns true when child predicate p returns false for x, otherwise returns true.
UnaryFunctor<? super T,java.lang.Boolean>	getPredicate() Returns the child predicate.
java.lang.String	toString()

Methods inherited from class net.sf.jga.fn.UnaryFunctor

bind, bind0th, bindNth, compose, compose, compose, composeNth, composeNth, eval, generate, generateNth

Methods inherited from class java.lang.Object

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

Constructor Detail

UnaryNegate

public UnaryNegate(UnaryFunctor<? super T,java.lang.Boolean> p)

Builds a UnaryNegate predicate wrapping the given Unary Predicate.

Throws:

java.lang.IllegalArgumentException - when no child predicate is given

Method Detail

getPredicate

public UnaryFunctor<? super T,java.lang.Boolean> getPredicate()

Returns the child predicate.

Returns:

the child predicate.

fn

public java.lang.Boolean fn(T x)

Given argument x, returns true when child predicate p returns false for x, otherwise returns true.

Specified by:

fn in class UnaryFunctor<T,java.lang.Boolean>

Returns:

!(p.p(x))

accept

public void accept(Visitor v)

Calls the Visitor's visit(UnaryNegate) method, if it implements the nested Visitor interface.

Specified by:

accept in interface Visitable

Overrides:

accept in class Functor<java.lang.Boolean>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object