169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal/* 269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Javassist, a Java-bytecode translator toolkit. 369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Copyright (C) 1999-2007 Shigeru Chiba. All Rights Reserved. 469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * The contents of this file are subject to the Mozilla Public License Version 669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 1.1 (the "License"); you may not use this file except in compliance with 769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * the License. Alternatively, the contents of this file may be used under 869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * the terms of the GNU Lesser General Public License Version 2.1 or later. 969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * 1069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Software distributed under the License is distributed on an "AS IS" basis, 1169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 1269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * for the specific language governing rights and limitations under the 1369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * License. 1469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 1569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 1669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalpackage javassist.compiler.ast; 1769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 1869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport java.io.Serializable; 1969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport javassist.compiler.CompileError; 2069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 2169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal/** 2269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Abstract Syntax Tree. An ASTree object represents a node of 2369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * a binary tree. If the node is a leaf node, both <code>getLeft()</code> 2469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * and <code>getRight()</code> returns null. 2569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 2669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalpublic abstract class ASTree implements Serializable { 2769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public ASTree getLeft() { return null; } 2869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 2969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public ASTree getRight() { return null; } 3069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 3169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public void setLeft(ASTree _left) {} 3269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 3369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public void setRight(ASTree _right) {} 3469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 3569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 3669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Is a method for the visitor pattern. It calls 3769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * <code>atXXX()</code> on the given visitor, where 3869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * <code>XXX</code> is the class name of the node object. 3969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 4069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public abstract void accept(Visitor v) throws CompileError; 4169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 4269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public String toString() { 4369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal StringBuffer sbuf = new StringBuffer(); 4469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal sbuf.append('<'); 4569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal sbuf.append(getTag()); 4669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal sbuf.append('>'); 4769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return sbuf.toString(); 4869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 4969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 5069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal /** 5169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * Returns the type of this node. This method is used by 5269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal * <code>toString()</code>. 5369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal */ 5469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal protected String getTag() { 5569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal String name = getClass().getName(); 5669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return name.substring(name.lastIndexOf('.') + 1); 5769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 5869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal} 59