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.functions.conversion;
020
021import lucee.commons.lang.StringUtil;
022import lucee.runtime.PageContext;
023import lucee.runtime.exp.PageException;
024import lucee.runtime.interpreter.JSONExpressionInterpreter;
025import lucee.runtime.op.Caster;
026
027public class IsJSON {
028        public static boolean call(PageContext pc, Object obj) {
029                String str=Caster.toString(obj,null);
030                if(StringUtil.isEmpty(str,true)) return false;
031                try {
032                        new JSONExpressionInterpreter().interpret(pc, str);
033                        return true;
034                } catch (PageException e) {
035                        return false;
036                }
037        }
038        
039}