/*
* $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/saxpath/Operator.java,v 1.5 2006/02/05 21:47:42 elharo Exp $
* $Revision: 1.5 $
* $Date: 2006/02/05 21:47:42 $
*
* ====================================================================
*
* Copyright 2000-2002 bob mcwhirter & James Strachan.
* All rights reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of the Jaxen Project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ====================================================================
* This software consists of voluntary contributions made by many
* individuals on behalf of the Jaxen Project and was originally
* created by bob mcwhirter <bob@werken.com> and
* James Strachan <jstrachan@apache.org>. For more information on the
* Jaxen Project, please see <http://www.jaxen.org/>.
*
* $Id: Operator.java,v 1.5 2006/02/05 21:47:42 elharo Exp $
*/
package org.orbeon.jaxen.saxpath;
/**
* Constants used to represent XPath operators.
*/
public interface Operator
{
/**
* Indicates that we're passing through a grammar production without
* actually activating it. For example in the expression
* <code>1</code> is matches AdditiveExpr and MultiplicativeExpr in
* the XPath grammar, even though it has neither a plus,
* minus, multiplication, or other sign.
*/
final static int NO_OP = 0;
// Equality
/**
* The equal to operator <code>=</code>. This is equivalent to <code>==</code>
* in Java. This is a comparison operator, not an assignment operator.
*/
final static int EQUALS = 1;
/**
* The not equal to operator <code>!=</code>
*/
final static int NOT_EQUALS = 2;
// Relational
/**
* The less-than operator <code><</code>
*/
final static int LESS_THAN = 3;
/**
* The less-than-or-equal-to operator <code><=</code>
*/
final static int LESS_THAN_EQUALS = 4;
/**
* The greater-than operator <code>></code>
*/
final static int GREATER_THAN = 5;
/**
* The greater-than or equals operator <code>>=</code>
*/
final static int GREATER_THAN_EQUALS = 6;
// Additive
/**
* The addition operator <code>+</code>
*/
final static int ADD = 7;
/**
* The subtraction operator <code>-</code>
*/
final static int SUBTRACT = 8;
// Multiplicative
/**
* The multiplication operator <code>*</code>
*/
final static int MULTIPLY = 9;
/**
* The remainder operator <code>mod</code>. This is equivalent to
* <code>%</code> in Java.
*/
final static int MOD = 10;
/**
* The floating point division operator <code>div</code>. This is equivalent to
* <code>/</code> in Java.
*/
final static int DIV = 11;
// Unary
/**
* Unary <code>-</code>
*/
final static int NEGATIVE = 12;
}