1 /* 2 * Copyright (c) 2011, 2015, 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 package jdk.vm.ci.hotspot; 24 25 import jdk.vm.ci.meta.*; 26 27 /** 28 * Implementation of {@link JavaType} for unresolved HotSpot classes. 29 */ 30 public class HotSpotUnresolvedJavaType extends HotSpotJavaType { 31 32 private final HotSpotJVMCIRuntimeProvider runtime; 33 34 public HotSpotUnresolvedJavaType(String name, HotSpotJVMCIRuntimeProvider runtime) { 35 super(name); 36 assert name.charAt(0) == '[' || name.charAt(name.length() - 1) == ';' : name; 37 this.runtime = runtime; 38 } 39 40 /** 41 * Creates an unresolved type for a valid {@link JavaType#getName() type name}. 42 */ 43 public static HotSpotUnresolvedJavaType create(HotSpotJVMCIRuntimeProvider runtime, String name) { 44 return new HotSpotUnresolvedJavaType(name, runtime); 45 } 46 47 @Override 48 public JavaType getComponentType() { 49 assert getName().charAt(0) == '[' : "no array class" + getName(); 50 return new HotSpotUnresolvedJavaType(getName().substring(1), runtime); 51 } 52 53 @Override 54 public JavaType getArrayClass() { 55 return new HotSpotUnresolvedJavaType('[' + getName(), runtime); 56 } 57 58 @Override 59 public JavaKind getJavaKind() { 60 return JavaKind.Object; 61 } 62 63 @Override 64 public int hashCode() { 65 return getName().hashCode(); 66 } 67 68 @Override 69 public boolean equals(Object obj) { 70 if (this == obj) { 71 return true; 72 } 73 if (obj == null || !(obj instanceof HotSpotUnresolvedJavaType)) { 74 return false; 75 } 76 HotSpotUnresolvedJavaType that = (HotSpotUnresolvedJavaType) obj; 77 return this.getName().equals(that.getName()); 78 } 79 80 @Override 81 public String toString() { 82 return "HotSpotType<" + getName() + ", unresolved>"; 83 } 84 85 @Override 86 public ResolvedJavaType resolve(ResolvedJavaType accessingClass) { 87 return (ResolvedJavaType) runtime.lookupType(getName(), (HotSpotResolvedObjectType) accessingClass, true); 88 } 89 90 /** 91 * Try to find a loaded version of this class. 92 * 93 * @param accessingClass 94 * @return the resolved class or null. 95 */ 96 ResolvedJavaType reresolve(HotSpotResolvedObjectType accessingClass) { 97 JavaType type = runtime.lookupType(getName(), accessingClass, false); 98 if (type instanceof ResolvedJavaType) { 99 return (ResolvedJavaType) type; 100 } 101 return null; 102 } 103 }