Source code: org/maloi/evolvo/expressiontree/operators/OperatorInterface.java
1 /* Evolvo - Image Generator
2 * Copyright (C) 2000 Andrew Molloy
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19 /**
20 * $Id: OperatorInterface.java,v 1.1.1.1 2002/10/04 15:39:32 maloi Exp $
21 */
22
23 package org.maloi.evolvo.expressiontree.operators;
24
25 import org.maloi.evolvo.expressiontree.vm.Stack;
26
27 /**
28 * Defines the interface which all operators must implement
29 */
30 public interface OperatorInterface
31 {
32 /** Returns the name of the operator. */
33 public String getName();
34 /** Performs any initialization the operator may require. */
35 public void init();
36 /** Returns the number of parameters the operator expects. */
37 public int getNumberOfParameters();
38 /** Executes this operator on values in the given stack.
39 * Pushes its result back onto the stack.
40 */
41 public void perform(Stack theStack);
42 }