/*
 * This file is part of %PACKAGENAME%.
 *
 * %PACKAGENAME% 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 3 of
 * the License, or (at your option) any later version.
 *
 * %PACKAGENAME% 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with %PACKAGENAME%. If not, see <http://www.gnu.org/licenses/>.
 *
 * For more information please see <http://www.%PACKAGENAME%.org>
 * or contact Peter Baumann via <baumann@rasdaman.com>.
 *
 * Copyright 2009 Jacobs University Bremen, Peter Baumann.
 */

package syntaxParser;

class BooleanScalarExpr implements IParseTreeNode {
	BooleanScalarExpr leftBooleanScalarExpr, rightBooleanScalarExpr;
	String booleanConstant;
	String op;	
	public BooleanScalarExpr(String bc) {
		booleanConstant = bc;		
	}	
	
	public BooleanScalarExpr(String op, BooleanScalarExpr be){
		this.op = op;
		leftBooleanScalarExpr = be ;
	}
	
	public BooleanScalarExpr(String op, BooleanScalarExpr lbe, BooleanScalarExpr rbe){
		this.op = op;
		leftBooleanScalarExpr = lbe ;
		rightBooleanScalarExpr = rbe ;
	}	
	
	public String toXML(){
		if (op == null) return "<boolean>" + booleanConstant + "</boolean>";
		else if (op.equals("not")) return "<scalarNot>" + leftBooleanScalarExpr.toXML() + "</scalarNot>";
		else {
		    if (op.equals("and")) op = "scalarAnd";
		    else if (op.equals("or")) op = "scalarOr";
		    else if (op.equals("xor")) op = "scalarXor";
		    return "<" + op + ">" + leftBooleanScalarExpr.toXML() + rightBooleanScalarExpr.toXML() + "</" + op + ">";
		}
		
	}
	
}