001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019package lucee.runtime.interpreter.ref.op;
020
021import lucee.runtime.PageContext;
022import lucee.runtime.exp.PageException;
023import lucee.runtime.interpreter.ref.Ref;
024import lucee.runtime.interpreter.ref.RefSupport;
025import lucee.runtime.op.Caster;
026
027
028/**
029 * Plus operation
030 */
031public final class Negate extends RefSupport implements Ref {
032
033    private Ref ref;
034
035    /**
036     * constructor of the class
037     * @param ref
038     */
039    public Negate(Ref ref) {
040        this.ref=ref;
041    }
042
043    @Override
044        public Object getValue(PageContext pc) throws PageException {
045        return new Double(-Caster.toDoubleValue(ref.getValue(pc)));
046    }
047
048    @Override
049    public String getTypeName() {
050        return "operation";
051    }
052
053}