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}