001/* 002 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved. 003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 004 * 005 * This code is free software; you can redistribute it and/or modify it 006 * under the terms of the GNU General Public License version 2 only, as 007 * published by the Free Software Foundation. 008 * 009 * This code is distributed in the hope that it will be useful, but WITHOUT 010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 011 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 012 * version 2 for more details (a copy is included in the LICENSE file that 013 * accompanied this code). 014 * 015 * You should have received a copy of the GNU General Public License version 016 * 2 along with this work; if not, write to the Free Software Foundation, 017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 018 * 019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 020 * or visit www.oracle.com if you need additional information or have any 021 * questions. 022 */ 023package jdk.internal.jvmci.hotspot; 024 025import jdk.internal.jvmci.meta.*; 026 027/** 028 * Implementation of {@link JavaType} for unresolved HotSpot classes. 029 */ 030public class HotSpotUnresolvedJavaType extends HotSpotJavaType { 031 032 private final HotSpotJVMCIRuntimeProvider runtime; 033 034 public HotSpotUnresolvedJavaType(String name, HotSpotJVMCIRuntimeProvider runtime) { 035 super(name); 036 assert name.charAt(0) == '[' || name.charAt(name.length() - 1) == ';' : name; 037 this.runtime = runtime; 038 } 039 040 /** 041 * Creates an unresolved type for a valid {@link JavaType#getName() type name}. 042 */ 043 public static HotSpotUnresolvedJavaType create(HotSpotJVMCIRuntimeProvider runtime, String name) { 044 return new HotSpotUnresolvedJavaType(name, runtime); 045 } 046 047 @Override 048 public JavaType getComponentType() { 049 assert getName().charAt(0) == '[' : "no array class" + getName(); 050 return new HotSpotUnresolvedJavaType(getName().substring(1), runtime); 051 } 052 053 @Override 054 public JavaType getArrayClass() { 055 return new HotSpotUnresolvedJavaType('[' + getName(), runtime); 056 } 057 058 @Override 059 public Kind getKind() { 060 return Kind.Object; 061 } 062 063 @Override 064 public int hashCode() { 065 return getName().hashCode(); 066 } 067 068 @Override 069 public boolean equals(Object obj) { 070 if (this == obj) { 071 return true; 072 } 073 if (obj == null || !(obj instanceof HotSpotUnresolvedJavaType)) { 074 return false; 075 } 076 HotSpotUnresolvedJavaType that = (HotSpotUnresolvedJavaType) obj; 077 return this.getName().equals(that.getName()); 078 } 079 080 @Override 081 public String toString() { 082 return "HotSpotType<" + getName() + ", unresolved>"; 083 } 084 085 @Override 086 public ResolvedJavaType resolve(ResolvedJavaType accessingClass) { 087 return (ResolvedJavaType) runtime.lookupType(getName(), (HotSpotResolvedObjectType) accessingClass, true); 088 } 089 090 /** 091 * Try to find a loaded version of this class. 092 * 093 * @param accessingClass 094 * @return the resolved class or null. 095 */ 096 ResolvedJavaType reresolve(HotSpotResolvedObjectType accessingClass) { 097 JavaType type = runtime.lookupType(getName(), accessingClass, false); 098 if (type instanceof ResolvedJavaType) { 099 return (ResolvedJavaType) type; 100 } 101 return null; 102 } 103}