Euboia.java from gzz at Krugle
Show Euboia.java syntax highlighted
/*
Euboia.java
*
* Copyright (c) 2001, Ted Nelson and Tuomas Lukka
*
* This file is part of Gzz.
*
* Gzz is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Gzz is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
* Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with Gzz; if not, write to the Free
* Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
*/
/*
* Written by Tero Mäyränen
*/
package org.gzigzag.module.homer;
import java.awt.*;
import java.util.*;
import java.lang.reflect.*;
import org.gzigzag.*;
/**
* Euboia is one way to make programming languages with static calls.
* You can add and remove calls dynamically.
*
* For a practical example, see Modules/raytrace/Model.java
*/
public class Euboia
{
public static final String rcsid = "$Id: Euboia.java,v 1.2 2003/02/21 20:02:21 tjl Exp $";
protected Hashtable hashtable = new Hashtable();
/**
* Add a command to the language.
*/
public void put(String type, Method method) { hashtable.put(type, method); }
/**
* Remove a command from the language.
*/
public void remove(String type) { hashtable.remove(type); }
/**
* Invoke a command in the language.
*/
public void invoke(ZZCell name, Object params[])
{
if (name == null) return;
ZZCell type = name.h("d.clone").s("d.1");
if (type == null) return;
Method method = (Method)hashtable.get(type.getText());
if (method != null)
{
params[0] = type;
try { method.invoke(null, params); } catch (Exception e)
{
ZZLogger.exc(e);
}
}
}
}
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