/* StandardOperator.java
 * =========================================================================
 * This file is part of the GrInvIn project - http://www.grinvin.org
 * 
 * Copyright (C) 2005-2008 Universiteit Gent
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 * 
 * This program 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
 * General Public License for more details.
 * 
 * A copy of the GNU General Public License can be found in the file
 * LICENSE.txt provided with the source distribution of this program (see
 * the META-INF directory in the source jar). This license can also be
 * found on the GNU website at http://www.gnu.org/licenses/gpl.html.
 * 
 * If you did not receive a copy of the GNU General Public License along
 * with this program, contact the lead developer, or write to the Free
 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.grinvin.expr;

/**
 * Enum to represent operators in formula.
 */
public enum StandardOperator implements Operator {
    
    PLUS("+", 2, 40),
    MINUS("-", 2, 40),
    TIMES("*", 2, 60),
    DIV("/", 2, 60), // TODO: strength for formulas is different as for strings
    POW("^", 2, 80),
    NEG("-", 1, 70),
    LE("<=", 2, 30);
    
    //
    private final String symbol;
    
    public String getSymbol() {
        return symbol;
    }
    
    //
    private final int numberOfArguments;
    
    public int getNumberOfArguments() {
        return numberOfArguments;
    }
    
    //
    private final int strength;
    
    public int getStrength() {
        return strength;
    }
    
    StandardOperator(String symbol, int numberOfArguments, int strength) {
        this.symbol = symbol;
        this.numberOfArguments = numberOfArguments;
        this.strength = strength;
    }
    
}