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.transformer.cfml.evaluator.impl; 020 021import lucee.transformer.bytecode.Statement; 022import lucee.transformer.bytecode.statement.tag.Tag; 023import lucee.transformer.bytecode.statement.tag.TagOutput; 024import lucee.transformer.cfml.evaluator.EvaluatorException; 025import lucee.transformer.cfml.evaluator.EvaluatorSupport; 026import lucee.transformer.library.tag.TagLibTag; 027 028 029/** 030 * Prueft den Kontext des Tag output. 031 * Das Tag output darf nicht innerhalb eines output Tag verschachtelt sein, 032 * ausser das aeussere Tag besitzt ein group Attribute. Das innere Tag darf jedoch kein group Attribute besitzen. 033 034 */ 035public final class Output extends EvaluatorSupport { 036 037 /** 038 * @see lucee.transformer.cfml.evaluator.EvaluatorSupport#evaluate(org.w3c.dom.Element, lucee.transformer.library.tag.TagLibTag) 039 */ 040 public void evaluate(Tag tag,TagLibTag libTag) throws EvaluatorException { 041 042 TagOutput output=(TagOutput) tag; 043 044 // check if inside a query tag 045 TagOutput parent = output; 046 boolean hasParentWithGroup=false; 047 boolean hasParentWithQuery=false; 048 boolean hasQuery=tag.containsAttribute("query"); 049 050 while((parent=getParentTagOutput(parent))!=null) { 051 if(!hasParentWithQuery)hasParentWithQuery=parent.hasQuery(); 052 if(!hasParentWithGroup)hasParentWithGroup=parent.hasGroup(); 053 if(hasParentWithQuery && hasParentWithGroup)break; 054 } 055 056 if(hasQuery && hasParentWithQuery) 057 throw new EvaluatorException("Nesting of tags cfoutput with attribute query is not allowed"); 058 059 if(hasQuery) 060 output.setType(TagOutput.TYPE_QUERY); 061 062 else if(tag.containsAttribute("group") && hasParentWithQuery) 063 output.setType(TagOutput.TYPE_GROUP); 064 065 else if(hasParentWithQuery) { 066 if(hasParentWithGroup) output.setType(TagOutput.TYPE_INNER_GROUP); 067 else output.setType(TagOutput.TYPE_INNER_QUERY); 068 } 069 else 070 output.setType(TagOutput.TYPE_NORMAL); 071 072 073 074 // attribute maxrows and endrow not allowd at the same time 075 if(tag.containsAttribute("maxrows") && tag.containsAttribute("endrow")) 076 throw new EvaluatorException("Wrong Context, you cannot use attribute maxrows and endrow at the same time."); 077 078 079 } 080 081 public static TagOutput getParentTagOutput(TagOutput stat) { 082 Statement parent = stat; 083 084 085 while(true) { 086 parent=parent.getParent(); 087 if(parent==null)return null; 088 if(parent instanceof TagOutput) return (TagOutput) parent; 089 } 090 } 091} 092 093 094 095