net.sf.jga.fn.adaptor
Class Distribute<T1,T2,F1,F2,R>

java.lang.Object
  net.sf.jga.fn.Functor<R>
      net.sf.jga.fn.BinaryFunctor<T1,T2,R>
          net.sf.jga.fn.adaptor.Distribute<T1,T2,F1,F2,R>

All Implemented Interfaces:

java.io.Serializable, Visitable

public class Distribute<T1,T2,F1,F2,R>
extends BinaryFunctor<T1,T2,R>

Binary Functor that passes its two arguments to two inner Unary Functors, and uses the results as arguments to an outer Binary Functor. This allows for the construction of compound functors from the primitives found in the arithmetic, logical, property, and comparison packages.

Copyright © 2003-2005 David A. Hall

Author:

David A. Hall

See Also:

Serialized Form

Nested Class Summary

static interface

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

Constructor Summary

Distribute(UnaryFunctor<T1,F1> f, UnaryFunctor<T2,F2> g, BinaryFunctor<F1,F2,R> h)
Builds a Distribute functor, given two inner functors f and g, and outer functor h.

Method Summary

void	accept(Visitor v) Calls the Visitor's visit(Distribute) method, if it implements the nested Visitor interface.
R	fn(T1 x, T2 y) Passes arguments x and y to the corresponding inner functors, and passes the results of those functors to the outer functor.
UnaryFunctor<T1,F1>	getFirstInnerFunctor() Returns the first of two inner functors
BinaryFunctor<F1,F2,R>	getOuterFunctor() Returns the outer functor
UnaryFunctor<T2,F2>	getSecondInnerFunctor() Returns the second of two inner functors
java.lang.String	toString()

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

bind, bind0th, bind1st, bind2nd, bindNth, compose, compose, composeNth, distribute, eval, generate, generate1st, generate2nd, generateNth

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

composeNth

Methods inherited from class java.lang.Object

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

Constructor Detail

Distribute

public Distribute(UnaryFunctor<T1,F1> f,
                  UnaryFunctor<T2,F2> g,
                  BinaryFunctor<F1,F2,R> h)

Builds a Distribute functor, given two inner functors f and g, and outer functor h.

Throws:

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

Method Detail

getFirstInnerFunctor

public UnaryFunctor<T1,F1> getFirstInnerFunctor()

Returns the first of two inner functors

Returns:

the first of two inner functors

getSecondInnerFunctor

public UnaryFunctor<T2,F2> getSecondInnerFunctor()

Returns the second of two inner functors

Returns:

the second of two inner functors

getOuterFunctor

public BinaryFunctor<F1,F2,R> getOuterFunctor()

Returns the outer functor

Returns:

the outer functor

fn

public R fn(T1 x,
            T2 y)

Passes arguments x and y to the corresponding inner functors, and passes the results of those functors to the outer functor.

Specified by:

fn in class BinaryFunctor<T1,T2,R>

Returns:

h(f(x), g(y))

accept

public void accept(Visitor v)

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

Specified by:

accept in interface Visitable

Overrides:

accept in class Functor<R>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object