diff options
Diffstat (limited to 'velocity-engine-core/src/main/java/org/apache/velocity/runtime/parser/node/ASTElseIfStatement.java')
-rw-r--r-- | velocity-engine-core/src/main/java/org/apache/velocity/runtime/parser/node/ASTElseIfStatement.java | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/velocity-engine-core/src/main/java/org/apache/velocity/runtime/parser/node/ASTElseIfStatement.java b/velocity-engine-core/src/main/java/org/apache/velocity/runtime/parser/node/ASTElseIfStatement.java new file mode 100644 index 00000000..78334c33 --- /dev/null +++ b/velocity-engine-core/src/main/java/org/apache/velocity/runtime/parser/node/ASTElseIfStatement.java @@ -0,0 +1,110 @@ +package org.apache.velocity.runtime.parser.node; + +/* + * 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. + */ + +import org.apache.velocity.context.InternalContextAdapter; +import org.apache.velocity.exception.MethodInvocationException; +import org.apache.velocity.exception.ParseErrorException; +import org.apache.velocity.exception.ResourceNotFoundException; +import org.apache.velocity.exception.TemplateInitException; +import org.apache.velocity.runtime.parser.Parser; + +import java.io.IOException; +import java.io.Writer; + +/** + * This class is responsible for handling the ElseIf VTL control statement. + * + * Please look at the Parser.jjt file which is + * what controls the generation of this class. + * + * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a> + * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a> + * @version $Id$ +*/ +public class ASTElseIfStatement extends SimpleNode +{ + /** + * @param id + */ + public ASTElseIfStatement(int id) + { + super(id); + } + + /** + * @param p + * @param id + */ + public ASTElseIfStatement(Parser p, int id) + { + super(p, id); + } + + /** + * @throws TemplateInitException + * @see org.apache.velocity.runtime.parser.node.Node#init(org.apache.velocity.context.InternalContextAdapter, java.lang.Object) + */ + @Override + public Object init(InternalContextAdapter context, Object data) throws TemplateInitException + { + Object obj = super.init(context, data); + cleanupParserAndTokens(); // drop reference to Parser and all JavaCC Tokens + return obj; + } + + /** + * @see org.apache.velocity.runtime.parser.node.SimpleNode#jjtAccept(org.apache.velocity.runtime.parser.node.ParserVisitor, java.lang.Object) + */ + @Override + public Object jjtAccept(ParserVisitor visitor, Object data) + { + return visitor.visit(this, data); + } + + /** + * An ASTElseStatement is true if the expression + * it contains evaluates to true. Expressions know + * how to evaluate themselves, so we do that + * here and return the value back to ASTIfStatement + * where this node was originally asked to evaluate + * itself. + * @param context + * @return True if all children are true. + * @throws MethodInvocationException + */ + @Override + public boolean evaluate (InternalContextAdapter context) + throws MethodInvocationException + { + return jjtGetChild(0).evaluate(context); + } + + /** + * @see org.apache.velocity.runtime.parser.node.SimpleNode#render(org.apache.velocity.context.InternalContextAdapter, java.io.Writer) + */ + @Override + public boolean render(InternalContextAdapter context, Writer writer) + throws IOException,MethodInvocationException, + ResourceNotFoundException, ParseErrorException + { + return jjtGetChild(1).render( context, writer ); + } +} |