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.JavaKind; 26 import jdk.vm.ci.meta.JavaType; 27 import jdk.vm.ci.meta.ResolvedJavaType; 28 29 /** 30 * Implementation of {@link JavaType} for unresolved HotSpot classes. 31 */ 32 final class HotSpotUnresolvedJavaType extends HotSpotJavaType { 33 34 private final HotSpotJVMCIRuntimeProvider runtime; 35 36 private HotSpotUnresolvedJavaType(String name, HotSpotJVMCIRuntimeProvider runtime) { 37 super(name); 38 assert name.charAt(0) == '[' || name.charAt(name.length() - 1) == ';' : name; 39 this.runtime = runtime; 40 } 41 42 /** 43 * Creates an unresolved type for a valid {@link JavaType#getName() type name}. 44 */ 45 static HotSpotUnresolvedJavaType create(HotSpotJVMCIRuntimeProvider runtime, String name) { 46 return new HotSpotUnresolvedJavaType(name, runtime); 47 } 48 49 @Override 50 public JavaType getComponentType() { 51 assert getName().charAt(0) == '[' : "no array class" + getName(); 52 return new HotSpotUnresolvedJavaType(getName().substring(1), runtime); 53 } 54 55 @Override 56 public JavaType getArrayClass() { 57 return new HotSpotUnresolvedJavaType('[' + getName(), runtime); 58 } 59 60 @Override 61 public JavaKind getJavaKind() { 62 return JavaKind.Object; 63 } 64 65 @Override 66 public int hashCode() { 67 return getName().hashCode(); 68 } 69 70 @Override 71 public boolean equals(Object obj) { 72 if (this == obj) { 73 return true; 74 } 75 if (obj == null || !(obj instanceof HotSpotUnresolvedJavaType)) { 76 return false; 77 } 78 HotSpotUnresolvedJavaType that = (HotSpotUnresolvedJavaType) obj; 79 return this.getName().equals(that.getName()); 80 } 81 82 @Override 83 public String toString() { 84 return "HotSpotType<" + getName() + ", unresolved>"; 85 } 86 87 @Override 88 public ResolvedJavaType resolve(ResolvedJavaType accessingClass) { 89 return (ResolvedJavaType) runtime.lookupType(getName(), (HotSpotResolvedObjectType) accessingClass, true); 90 } 91 92 /** 93 * Try to find a loaded version of this class. 94 * 95 * @param accessingClass 96 * @return the resolved class or null. 97 */ 98 ResolvedJavaType reresolve(HotSpotResolvedObjectType accessingClass) { 99 JavaType type = runtime.lookupType(getName(), accessingClass, false); 100 if (type instanceof ResolvedJavaType) { 101 return (ResolvedJavaType) type; 102 } 103 return null; 104 } 105 }