/* StringAddOperator Copyright (C) 1998-2002 Jochen Hoenicke.
 *
 * This program 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, 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.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; see the file COPYING.LESSER.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id: StringAddOperator.java,v 2.14.2.1 2002/05/28 17:34:06 hoenicke Exp $
 */

package alterrs.jode.expr;

import alterrs.jode.decompiler.TabbedPrintWriter;
import alterrs.jode.type.Type;

public class StringAddOperator extends Operator {
	protected Type operandType;

	public StringAddOperator() {
		super(Type.tString, ADD_OP);
		initOperands(2);
	}

	public int getPriority() {
		return 610;
	}

	public boolean opEquals(Operator o) {
		return (o instanceof StringAddOperator);
	}

	public void updateSubTypes() {
		/* A string add allows everything */
	}

	public void updateType() {
	}

	public void dumpExpression(TabbedPrintWriter writer)
			throws java.io.IOException {

		if (!subExpressions[0].getType().isOfType(Type.tString)
				&& !subExpressions[1].getType().isOfType(Type.tString)) {
			writer.print("\"\"");
			writer.breakOp();
			writer.print(getOperatorString());
		}

		subExpressions[0].dumpExpression(writer, 610);
		writer.breakOp();
		writer.print(getOperatorString());
		subExpressions[1].dumpExpression(writer, 611);
	}
}
