1/* 2 * Copyright (c) 2001, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25package sun.jvm.hotspot.debugger.cdbg.basic; 26 27import sun.jvm.hotspot.debugger.*; 28import sun.jvm.hotspot.debugger.cdbg.*; 29import sun.jvm.hotspot.utilities.Assert; 30 31public class LazyType extends BasicType { 32 private Object key; 33 private int cvAttributes; 34 35 public LazyType(Object key) { 36 this(key, 0); 37 } 38 39 private LazyType(Object key, int cvAttributes) { 40 super(null, 0, cvAttributes); 41 if (Assert.ASSERTS_ENABLED) { 42 Assert.that(key != null, "key must not be null"); 43 } 44 this.key = key; 45 this.cvAttributes = cvAttributes; 46 } 47 48 public boolean isLazy() { return true; } 49 public Object getKey() { return key; } 50 51 Type resolveTypes(BasicCDebugInfoDataBase db, ResolveListener listener) { 52 BasicType t = (BasicType) db.resolveType(this, this, listener, "resolving lazy type"); 53 // Returned type might be lazy if there was an error 54 if (t.isLazy()) { 55 return this; 56 } 57 if (cvAttributes != 0) { 58 return t.getCVVariant(cvAttributes); 59 } 60 return t; 61 } 62 63 public void iterateObject(Address a, ObjectVisitor v, FieldIdentifier f) {} 64 protected Type createCVVariant(int cvAttributes) { 65 return new LazyType(key, cvAttributes); 66 } 67 68 public void visit(TypeVisitor v) {} 69} 70