1 /* 2 * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.reflect.generics.scope; 27 28 import java.lang.reflect.Constructor; 29 import java.lang.reflect.Method; 30 31 32 /** 33 * This class represents the scope containing the type variables of 34 * a class. 35 */ 36 public class ClassScope extends AbstractScope<Class<?>> implements Scope { 37 38 // constructor is private to enforce use of factory method 39 private ClassScope(Class<?> c){ 40 super(c); 41 } 42 43 /** 44 * Overrides the abstract method in the superclass. 45 * @return the enclosing scope 46 */ 47 protected Scope computeEnclosingScope() { 48 Class<?> receiver = getRecvr(); 49 50 Method m = receiver.getEnclosingMethod(); 51 if (m != null) 52 // Receiver is a local or anonymous class enclosed in a 53 // method. 54 return MethodScope.make(m); 55 56 Constructor<?> cnstr = receiver.getEnclosingConstructor(); 57 if (cnstr != null) 58 // Receiver is a local or anonymous class enclosed in a 59 // constructor. 60 return ConstructorScope.make(cnstr); 61 62 Class<?> c = receiver.getEnclosingClass(); 63 // if there is a declaring class, recvr is a member class 64 // and its enclosing scope is that of the declaring class 65 if (c != null) 66 // Receiver is a local class, an anonymous class, or a 67 // member class (static or not). 68 return ClassScope.make(c); 69 70 // otherwise, recvr is a top level class, and it has no real 71 // enclosing scope. 72 return DummyScope.make(); 73 } 74 75 /** 76 * Factory method. Takes a <tt>Class</tt> object and creates a 77 * scope for it. 78 * @param c - a Class whose scope we want to obtain 79 * @return The type-variable scope for the class c 80 */ 81 public static ClassScope make(Class<?> c) { return new ClassScope(c);} 82 83 }