1 /* 2 * Copyright (c) 2011, 2016, 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 static java.util.Objects.requireNonNull; 26 27 import java.lang.annotation.Annotation; 28 import java.lang.reflect.Array; 29 import java.lang.reflect.Modifier; 30 31 import jdk.vm.ci.common.JVMCIError; 32 import jdk.vm.ci.meta.Assumptions.AssumptionResult; 33 import jdk.vm.ci.meta.JavaConstant; 34 import jdk.vm.ci.meta.JavaKind; 35 import jdk.vm.ci.meta.JavaType; 36 import jdk.vm.ci.meta.ResolvedJavaField; 37 import jdk.vm.ci.meta.ResolvedJavaMethod; 38 import jdk.vm.ci.meta.ResolvedJavaType; 39 40 /** 41 * Implementation of {@link JavaType} for primitive HotSpot types. 42 */ 43 public final class HotSpotResolvedPrimitiveType extends HotSpotResolvedJavaType implements HotSpotProxified { 44 45 private final JavaKind kind; 46 47 /** 48 * Creates the JVMCI mirror for a primitive {@link JavaKind}. 49 * 50 * <p> 51 * <b>NOTE</b>: Creating an instance of this class does not install the mirror for the 52 * {@link Class} type. Use {@link HotSpotJVMCIRuntimeProvider#fromClass(Class)} instead. 53 * </p> 54 * 55 * @param kind the Kind to create the mirror for 56 */ 57 public HotSpotResolvedPrimitiveType(JavaKind kind) { 58 super(String.valueOf(Character.toUpperCase(kind.getTypeChar()))); 59 this.kind = kind; 60 assert mirror().isPrimitive() : mirror() + " not a primitive type"; 61 } 62 63 @Override 64 public int getModifiers() { 65 return Modifier.ABSTRACT | Modifier.FINAL | Modifier.PUBLIC; 66 } 67 68 @Override 69 public HotSpotResolvedObjectTypeImpl getArrayClass() { 70 if (kind == JavaKind.Void) { 71 return null; 72 } 73 Class<?> javaArrayMirror = Array.newInstance(mirror(), 0).getClass(); 74 return HotSpotResolvedObjectTypeImpl.fromObjectClass(javaArrayMirror); 75 } 76 77 public ResolvedJavaType getElementalType() { 78 return this; 79 } 80 81 @Override 82 public ResolvedJavaType getComponentType() { 83 return null; 84 } 85 86 @Override 87 public ResolvedJavaType asExactType() { 88 return this; 89 } 90 91 @Override 92 public ResolvedJavaType getSuperclass() { 93 return null; 94 } 95 96 @Override 97 public ResolvedJavaType[] getInterfaces() { 98 return new ResolvedJavaType[0]; 99 } 100 101 @Override 102 public ResolvedJavaType getSingleImplementor() { 103 throw new JVMCIError("Cannot call getSingleImplementor() on a non-interface type: %s", this); 104 } 105 106 @Override 107 public ResolvedJavaType findLeastCommonAncestor(ResolvedJavaType otherType) { 108 return null; 109 } 110 111 @Override 112 public AssumptionResult<Boolean> hasFinalizableSubclass() { 113 return new AssumptionResult<>(false); 114 } 115 116 @Override 117 public boolean hasFinalizer() { 118 return false; 119 } 120 121 @Override 122 public boolean isArray() { 123 return false; 124 } 125 126 @Override 127 public boolean isPrimitive() { 128 return true; 129 } 130 131 @Override 132 public boolean isInitialized() { 133 return true; 134 } 135 136 public boolean isLinked() { 137 return true; 138 } 139 140 @Override 141 public boolean isInstance(JavaConstant obj) { 142 return false; 143 } 144 145 @Override 146 public boolean isInstanceClass() { 147 return false; 148 } 149 150 @Override 151 public boolean isInterface() { 152 return false; 153 } 154 155 @Override 156 public boolean isAssignableFrom(ResolvedJavaType other) { 157 assert other != null; 158 return other.equals(this); 159 } 160 161 @Override 162 public JavaKind getJavaKind() { 163 return kind; 164 } 165 166 @Override 167 public boolean isJavaLangObject() { 168 return false; 169 } 170 171 @Override 172 public ResolvedJavaMethod resolveMethod(ResolvedJavaMethod method, ResolvedJavaType callerType) { 173 return null; 174 } 175 176 @Override 177 public String toString() { 178 return "HotSpotResolvedPrimitiveType<" + kind + ">"; 179 } 180 181 @Override 182 public AssumptionResult<ResolvedJavaType> findLeafConcreteSubtype() { 183 return new AssumptionResult<>(this); 184 } 185 186 @Override 187 public AssumptionResult<ResolvedJavaMethod> findUniqueConcreteMethod(ResolvedJavaMethod method) { 188 return null; 189 } 190 191 @Override 192 public ResolvedJavaField[] getInstanceFields(boolean includeSuperclasses) { 193 return new ResolvedJavaField[0]; 194 } 195 196 @Override 197 public ResolvedJavaField[] getStaticFields() { 198 return new ResolvedJavaField[0]; 199 } 200 201 @Override 202 public Annotation[] getAnnotations() { 203 return new Annotation[0]; 204 } 205 206 @Override 207 public Annotation[] getDeclaredAnnotations() { 208 return new Annotation[0]; 209 } 210 211 @Override 212 public <T extends Annotation> T getAnnotation(Class<T> annotationClass) { 213 return null; 214 } 215 216 @Override 217 public ResolvedJavaType resolve(ResolvedJavaType accessingClass) { 218 requireNonNull(accessingClass); 219 return this; 220 } 221 222 @Override 223 public void initialize() { 224 } 225 226 @Override 227 public ResolvedJavaField findInstanceFieldWithOffset(long offset, JavaKind expectedType) { 228 return null; 229 } 230 231 @Override 232 public String getSourceFileName() { 233 throw JVMCIError.unimplemented(); 234 } 235 236 @Override 237 public Class<?> mirror() { 238 return kind.toJavaClass(); 239 } 240 241 @Override 242 public boolean isLocal() { 243 return false; 244 } 245 246 @Override 247 public boolean isMember() { 248 return false; 249 } 250 251 @Override 252 public ResolvedJavaType getEnclosingType() { 253 return null; 254 } 255 256 @Override 257 public ResolvedJavaMethod[] getDeclaredConstructors() { 258 return new ResolvedJavaMethod[0]; 259 } 260 261 @Override 262 public ResolvedJavaMethod[] getDeclaredMethods() { 263 return new ResolvedJavaMethod[0]; 264 } 265 266 @Override 267 public ResolvedJavaMethod getClassInitializer() { 268 return null; 269 } 270 271 @Override 272 public boolean isCloneableWithAllocation() { 273 return false; 274 } 275 }