| /* Generated By:JJTree: Do not edit this line. Node.java */ |
| |
| /* |
| * 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 org.apache.el.parser; |
| |
| import javax.el.ELException; |
| import javax.el.MethodInfo; |
| import javax.el.ValueReference; |
| |
| import org.apache.el.lang.EvaluationContext; |
| |
| |
| /* All AST nodes must implement this interface. It provides basic |
| machinery for constructing the parent and child relationships |
| between nodes. */ |
| |
| /** |
| * @author Jacob Hookom [jacob@hookom.net] |
| * $Id$ |
| */ |
| public interface Node { |
| |
| /** This method is called after the node has been made the current |
| node. It indicates that child nodes can now be added to it. */ |
| public void jjtOpen(); |
| |
| /** This method is called after all the child nodes have been |
| added. */ |
| public void jjtClose(); |
| |
| /** This pair of methods are used to inform the node of its |
| parent. */ |
| public void jjtSetParent(Node n); |
| public Node jjtGetParent(); |
| |
| /** This method tells the node to add its argument to the node's |
| list of children. */ |
| public void jjtAddChild(Node n, int i); |
| |
| /** This method returns a child node. The children are numbered |
| from zero, left to right. */ |
| public Node jjtGetChild(int i); |
| |
| /** Return the number of children the node has. */ |
| public int jjtGetNumChildren(); |
| |
| public String getImage(); |
| |
| public Object getValue(EvaluationContext ctx) throws ELException; |
| public void setValue(EvaluationContext ctx, Object value) throws ELException; |
| public Class<?> getType(EvaluationContext ctx) throws ELException; |
| public boolean isReadOnly(EvaluationContext ctx) throws ELException; |
| public void accept(NodeVisitor visitor) throws Exception; |
| public MethodInfo getMethodInfo(EvaluationContext ctx, Class<?>[] paramTypes) |
| throws ELException; |
| public Object invoke(EvaluationContext ctx, Class<?>[] paramTypes, |
| Object[] paramValues) throws ELException; |
| |
| /** |
| * @since EL 2.2 |
| */ |
| public ValueReference getValueReference(EvaluationContext ctx); |
| |
| /** |
| * @since EL 2.2 |
| */ |
| public boolean isParametersProvided(); |
| } |