1 /* 2 * Copyright (c) 2013, 2018, 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 package vm.runtime.defmeth.shared.data; 25 26 import vm.runtime.defmeth.shared.builder.TestBuilder; 27 28 /** 29 * Wrapper around some ConcreteClass instance. It delegates all calls to 30 * underlying instance. Lazy resolution of a target instance by it's name 31 * allows to delay resolution till runtime and "tie-the-knot" in recursive 32 * hierarchies. 33 */ 34 public class ConcreteClassLazyAdapter extends ClazzLazyAdapter implements ConcreteClass { 35 private final TestBuilder builder; 36 private final String name; 37 38 private ConcreteClass target; 39 40 public ConcreteClassLazyAdapter(TestBuilder builder, String name) { 41 super(builder, name); 42 43 this.builder = builder; 44 this.name = name; 45 } 46 47 private ConcreteClass delegate() { 48 if (target == null) { 49 target = (ConcreteClass)builder.lookup(name); 50 } 51 52 return target; 53 } 54 55 @Override 56 public ConcreteClass parent() { 57 return delegate().parent(); 58 } 59 60 @Override 61 public Interface[] interfaces() { 62 return delegate().interfaces(); 63 } 64 65 @Override 66 public void visit(Visitor v) { 67 delegate().visit(v); 68 } 69 }