org.apache.commons.jexl.parser.Node Maven / Gradle / Ivy
/*
* 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.
*/
/* Generated By:JJTree: Do not edit this line. Node.java */
package org.apache.commons.jexl.parser;
/**
* All AST nodes must implement this interface. It provides basic machinery for
* constructing the parent and child relationships between nodes.
*/
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.
*/
void jjtOpen();
/**
* This method is called after all the child nodes have been added.
*/
void jjtClose();
/**
* This pair of methods are used to inform the node of its parent.
* @param n the parent node.
*/
void jjtSetParent(Node n);
/**
* Gets the parent node.
* @return the parent to this node.
*/
Node jjtGetParent();
/**
* This method tells the node to add its argument to the node's list of
* children.
* @param n the child node to add
* @param i the index to add it at.
*/
void jjtAddChild(Node n, int i);
/**
* This method returns a child node. The children are numbered from zero,
* left to right.
* @param i the index of the child to get.
* @return the child at the given index.
*/
Node jjtGetChild(int i);
/**
* Gets the number of children the node has.
* @return the number of children the node has.
*/
int jjtGetNumChildren();
/**
* Accept the visitor.
* @param data arbitrary data.
* @param visitor the visitor.
* @return the result of the visit.
*/
Object jjtAccept(ParserVisitor visitor, Object data);
}