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.commons.lang.StringUtil; 022import lucee.transformer.bytecode.cast.CastString; 023import lucee.transformer.bytecode.literal.LitString; 024import lucee.transformer.bytecode.statement.tag.Attribute; 025import lucee.transformer.bytecode.statement.tag.Tag; 026import lucee.transformer.bytecode.statement.tag.TagContinue; 027import lucee.transformer.bytecode.util.ASMUtil; 028import lucee.transformer.cfml.evaluator.EvaluatorException; 029import lucee.transformer.cfml.evaluator.EvaluatorSupport; 030import lucee.transformer.library.tag.TagLibTag; 031 032 033 034/** 035 * Prueft den Kontext des Tag continue. 036 * Das Tag <code>break</code> darf nur innerhalb des Tag <code>loop, while, foreach</code> liegen. 037 */ 038public final class Continue extends EvaluatorSupport { 039 040 @Override 041 public void evaluate(Tag tag,TagLibTag libTag) throws EvaluatorException { 042 String ns=libTag.getTagLib().getNameSpaceAndSeparator(); 043 String loopName=ns+"loop"; 044 String whileName=ns+"while"; 045 046 // label 047 String label=null; 048 Attribute attrLabel = tag.getAttribute("label"); 049 if(attrLabel!=null){ 050 TagContinue tc=(TagContinue) tag; 051 label=Break.variableToString(tag,attrLabel,null); 052 if(label!=null){ 053 tc.setLabel(label=label.trim()); 054 tag.removeAttribute("label"); 055 } 056 else if(ASMUtil.isLiteralAttribute(tag, attrLabel, ASMUtil.TYPE_STRING, false, true)) { 057 LitString ls=(LitString) CastString.toExprString(tag.getAttribute("label").getValue()); 058 label = ls.getString(); 059 if(!StringUtil.isEmpty(label,true)) { 060 tc.setLabel(label=label.trim()); 061 tag.removeAttribute("label"); 062 } 063 else label=null; 064 } 065 } 066 067 if(ASMUtil.isLiteralAttribute(tag, "label", ASMUtil.TYPE_STRING, false, true)) { 068 LitString ls=(LitString) CastString.toExprString(tag.getAttribute("label").getValue()); 069 TagContinue tc=(TagContinue) tag; 070 label = ls.getString(); 071 if(!StringUtil.isEmpty(label,true)) { 072 tc.setLabel(label=label.trim()); 073 tag.removeAttribute("label"); 074 } 075 else label=null; 076 } 077 078 if(!ASMUtil.hasAncestorContinueFCStatement(tag,label)) { 079 if(tag.isScriptBase()) { 080 if(StringUtil.isEmpty(label)) 081 throw new EvaluatorException("Wrong Context, "+libTag.getName()+" must be inside a loop (for,while,loop ...)"); 082 throw new EvaluatorException("Wrong Context, "+libTag.getName()+" must be inside a loop (for,while,loop ...) with the label ["+label+"]"); 083 084 } 085 if(StringUtil.isEmpty(label)) 086 throw new EvaluatorException("Wrong Context, tag "+libTag.getFullName()+" must be inside a "+loopName+" or "+whileName+" tag"); 087 throw new EvaluatorException("Wrong Context, tag "+libTag.getFullName()+" must be inside a "+loopName+" or "+whileName+" tag with the label ["+label+"]"); 088 089 } 090 } 091}