net.sf.jga.fn.adaptor
Class Constant<V>

java.lang.Object
  net.sf.jga.fn.Functor<R>
      net.sf.jga.fn.Generator<V>
          net.sf.jga.fn.adaptor.Constant<V>

All Implemented Interfaces:

java.io.Serializable, Visitable

public class Constant<V>
extends Generator<V>

Functor that returns the constant value given at construction.

Copyright © 2003-2005 David A. Hall

Author:

David A. Hall

See Also:

Serialized Form

Nested Class Summary

static interface

Constant.Visitor Interface for classes that may interpret a Constant generator.

Constructor Summary

Constant(V val)
Builds a Constant functor for the given value.

Method Summary

void	accept(Visitor v) Calls the Visitor's visit(Constant) method, if it implements the nested Visitor interface.
V	fn() Returns the constant value given at construction
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

Constructor Detail

Constant

public Constant(V val)

Builds a Constant functor for the given value. The value may be null: in that case, evaluating the functor will return null.

Method Detail

fn

public V fn()

Returns the constant value given at construction

Specified by:

fn in class Generator<V>

Returns:

the constant value given at construction

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<V>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object