/*
 * This file is part of rasdaman community.
 *
 * Rasdaman community 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 3 of the License, or
 * (at your option) any later version.
 *
 * Rasdaman community 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 General Public License
 * along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
 rasdaman GmbH.
 *
 * For more information please see <http://www.rasdaman.org>
 * or contact Peter Baumann via <baumann@rasdaman.com>.
 */
package petascope.wcps.grammar;

/**
 * IndexExpr
 *
 * @author Andrei Aiordachioaie
 */
public class IndexExpr implements IParseTreeNode {

    String constant;
    IParseTreeNode e1, e2;
    String function;
    String op;

    public IndexExpr(String constant) {
        function = "constant";
        this.constant = constant;
    }

    public IndexExpr(String op, NumericScalarExpr e1) {
        this.op = op;
        this.e1 = e1;
        function = "op1";
    }

    public IndexExpr(String op, IndexExpr e1, IndexExpr e2) {
        this.op = op;
        this.e1 = e1;
        this.e2 = e2;
        function = "op2";
    }

    public String toXML() {
        String result = "";
        String tag1 = "<" + op + ">",
                tag2 = "</" + op + ">";

        if (function.equals("constant")) {
            result = "<numericConstant>" + constant + "</numericConstant>";
        } else if (function.equals("op1")) {
            result = tag1 + e1.toXML() + tag2;
        } else if (function.equals("op2")) {
            result = tag1 + e1.toXML() + e2.toXML() + tag2;
        }

        return result;
    }
}