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; 1769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 1869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport java.util.HashMap; 1969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalimport javassist.compiler.ast.Declarator; 2069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 2169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigalpublic final class SymbolTable extends HashMap { 2269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal private SymbolTable parent; 2369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 2469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public SymbolTable() { this(null); } 2569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 2669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public SymbolTable(SymbolTable p) { 2769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal super(); 2869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal parent = p; 2969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 3069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 3169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public SymbolTable getParent() { return parent; } 3269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 3369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public Declarator lookup(String name) { 3469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal Declarator found = (Declarator)get(name); 3569e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal if (found == null && parent != null) 3669e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return parent.lookup(name); 3769e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal else 3869e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal return found; 3969e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 4069e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal 4169e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal public void append(String name, Declarator value) { 4269e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal put(name, value); 4369e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal } 4469e17611504376e4d4603925f8528dfc890fd2c6Luis Sigal} 45