net.sf.jga.fn.adaptor
Class Identity.Accessor<T>

java.lang.Object
  net.sf.jga.fn.Functor<R>
      net.sf.jga.fn.Generator<T>
          net.sf.jga.fn.adaptor.Identity.Accessor<T>

All Implemented Interfaces:

java.io.Serializable, Visitable

Enclosing class:

Identity<T>

public static class Identity.Accessor<T>
extends Generator<T>

A Generator that returns the last value passed to an associated Identity. This allows an Identity to serve as a cache for common subexpressions: if you compose the subexpression within an Identity in it's first appearance in a compound functor, you can use the Identity's Accessor as a replacement for all other appearances of the same subexpression.

See Also:

Serialized Form

Method Summary

void	accept(Visitor v) Calls the Visitor's visit(Constant) method, if it implements the nested Visitor interface.
T	fn() Generate one instance.
Identity<T>	getIdentity()
java.lang.String	toString()

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

bind0th, bindNth, eval

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

composeNth, composeNth, generateNth

Methods inherited from class java.lang.Object

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

Method Detail

getIdentity

public Identity<T> getIdentity()

fn

public T fn()

Description copied from class: Generator

Generate one instance.

Specified by:

fn in class Generator<T>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

accept

public void accept(Visitor v)

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

Specified by:

accept in interface Visitable

Overrides:

accept in class Functor<T>