| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package freemarker.core; |
| |
| import java.io.IOException; |
| |
| import freemarker.template.TemplateException; |
| |
| /** |
| * Holder for the attempted section of the #attempt element and of the nested #recover element ({@link RecoveryBlock}). |
| */ |
| final class AttemptBlock extends TemplateElement { |
| |
| private TemplateElement attemptedSection; |
| private RecoveryBlock recoverySection; |
| |
| AttemptBlock(TemplateElements attemptedSectionChildren, RecoveryBlock recoverySection) { |
| TemplateElement attemptedSection = attemptedSectionChildren.asSingleElement(); |
| this.attemptedSection = attemptedSection; |
| this.recoverySection = recoverySection; |
| setChildBufferCapacity(2); |
| addChild(attemptedSection); // for backward compatibility |
| addChild(recoverySection); |
| } |
| |
| @Override |
| TemplateElement[] accept(Environment env) throws TemplateException, IOException { |
| env.visitAttemptRecover(this, attemptedSection, recoverySection); |
| return null; |
| } |
| |
| @Override |
| protected String dump(boolean canonical) { |
| if (!canonical) { |
| return getNodeTypeSymbol(); |
| } else { |
| StringBuilder buf = new StringBuilder(); |
| buf.append("<").append(getNodeTypeSymbol()).append(">"); |
| buf.append(getChildrenCanonicalForm()); |
| buf.append("</").append(getNodeTypeSymbol()).append(">"); |
| return buf.toString(); |
| } |
| } |
| |
| @Override |
| int getParameterCount() { |
| return 1; |
| } |
| |
| @Override |
| Object getParameterValue(int idx) { |
| if (idx != 0) throw new IndexOutOfBoundsException(); |
| return recoverySection; |
| } |
| |
| @Override |
| ParameterRole getParameterRole(int idx) { |
| if (idx != 0) throw new IndexOutOfBoundsException(); |
| return ParameterRole.ERROR_HANDLER; |
| } |
| |
| @Override |
| String getNodeTypeSymbol() { |
| return "#attempt"; |
| } |
| |
| @Override |
| boolean isNestedBlockRepeater() { |
| return false; |
| } |
| |
| } |