net.sf.jga.fn.adaptor
Class ChainUnary<T,F,R>

java.lang.Object
  net.sf.jga.fn.Functor<R>
      net.sf.jga.fn.UnaryFunctor<T,R>
          net.sf.jga.fn.adaptor.ChainUnary<T,F,R>

All Implemented Interfaces:

java.io.Serializable, Visitable

public class ChainUnary<T,F,R>
extends UnaryFunctor<T,R>

Unary Functor that passes the results of one Unary Functor as the argument to another Unary Functor. This allows for the construction of compound functors from the primitives found in the arithmetic, logical, property, and comparison packages.

Copyright © 2002-2005 David A. Hall

Author:

David A. Hall

See Also:

Serialized Form

Nested Class Summary

static interface

ChainUnary.Visitor Interface for classes that may interpret a ChainUnary functor.

Constructor Summary

ChainUnary(UnaryFunctor<F,R> f, UnaryFunctor<T,F> g)
Builds a BinaryCompose functor, given the outer functor f the inner functor g.

Method Summary

void	accept(Visitor v) Calls the Visitor's visit(BinaryCompose) method, if it implements the nested Visitor interface.
R	fn(T x) Given argument x, passes x to the inner functor, and passes the result to the outer functor.
UnaryFunctor<T,F>	getInnerFunctor() Returns the inner functor
UnaryFunctor<F,R>	getOuterFunctor() Returns the outer functor
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

ChainUnary

public ChainUnary(UnaryFunctor<F,R> f,
                  UnaryFunctor<T,F> g)

Builds a BinaryCompose functor, given the outer functor f the inner functor g.

Throws:

java.lang.IllegalArgumentException - if any of the functors is missing

Method Detail

getOuterFunctor

public UnaryFunctor<F,R> getOuterFunctor()

Returns the outer functor

Returns:

the outer functor

getInnerFunctor

public UnaryFunctor<T,F> getInnerFunctor()

Returns the inner functor

Returns:

the inner functor

fn

public R fn(T x)

Given argument x, passes x to the inner functor, and passes the result to the outer functor.

Specified by:

fn in class UnaryFunctor<T,R>

Returns:

f(g(x))

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

accept

public void accept(Visitor v)

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

Specified by:

accept in interface Visitable

Overrides:

accept in class Functor<R>