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| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2008, 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package com.sun.tools.jdi; | ||
| 27 | |||
| 28 | import com.sun.jdi.*; | ||
| 29 | |||
| 30 | import java.util.*; | ||
| 31 | |||
| 32 | public class ClassTypeImpl extends ReferenceTypeImpl | ||
| 33 | implements ClassType | ||
| 34 | { | ||
| 35 | private boolean cachedSuperclass = false; | ||
| 36 | private ClassType superclass = null; | ||
| 37 | private int lastLine = -1; | ||
| 38 | private List<InterfaceType> interfaces = null; | ||
| 39 | |||
| 40 | protected ClassTypeImpl(VirtualMachine aVm,long aRef) { | ||
| 41 | super(aVm, aRef); | ||
| 42 | } | ||
| 43 | |||
| 44 | public ClassType superclass() { | ||
| 45 | if(!cachedSuperclass) { | ||
| 46 | ClassTypeImpl sup = null; | ||
| 47 | try { | ||
| 48 | sup = JDWP.ClassType.Superclass. | ||
| 49 | process(vm, this).superclass; | ||
| 50 | } catch (JDWPException exc) { | ||
| 51 | throw exc.toJDIException(); | ||
| 52 | } | ||
| 53 | |||
| 54 | /* | ||
| 55 | * If there is a superclass, cache its | ||
| 56 | * ClassType here. Otherwise, | ||
| 57 | * leave the cache reference null. | ||
| 58 | */ | ||
| 59 | if (sup != null) { | ||
| 60 | superclass = sup; | ||
| 61 | } | ||
| 62 | cachedSuperclass = true; | ||
| 63 | } | ||
| 64 | |||
| 65 | return superclass; | ||
| 66 | } | ||
| 67 | |||
| 68 | public List<InterfaceType> interfaces() { | ||
| 69 | if (interfaces == null) { | ||
| 70 | interfaces = getInterfaces(); | ||
| 71 | } | ||
| 72 | return interfaces; | ||
| 73 | } | ||
| 74 | |||
| 75 | void addInterfaces(List<InterfaceType> list) { | ||
| 76 | List<InterfaceType> immediate = interfaces(); | ||
| 77 | list.addAll(interfaces()); | ||
| 78 | |||
| 79 | Iterator iter = immediate.iterator(); | ||
| 80 | while (iter.hasNext()) { | ||
| 81 | InterfaceTypeImpl interfaze = (InterfaceTypeImpl)iter.next(); | ||
| 82 | interfaze.addSuperinterfaces(list); | ||
| 83 | } | ||
| 84 | |||
| 85 | ClassTypeImpl superclass = (ClassTypeImpl)superclass(); | ||
| 86 | if (superclass != null) { | ||
| 87 | superclass.addInterfaces(list); | ||
| 88 | } | ||
| 89 | } | ||
| 90 | |||
| 91 | public List<InterfaceType> allInterfaces() { | ||
| 92 | List<InterfaceType> all = new ArrayList<InterfaceType>(); | ||
| 93 | addInterfaces(all); | ||
| 94 | return all; | ||
| 95 | } | ||
| 96 | |||
| 97 | public List<ClassType> subclasses() { | ||
| 98 | List<ClassType> subs = new ArrayList<ClassType>(); | ||
| 99 | for (ReferenceType refType : vm.allClasses()) { | ||
| 100 | if (refType instanceof ClassType) { | ||
| 101 | ClassType clazz = (ClassType)refType; | ||
| 102 | ClassType superclass = clazz.superclass(); | ||
| 103 | if ((superclass != null) && superclass.equals(this)) { | ||
| 104 | subs.add((ClassType)refType); | ||
| 105 | } | ||
| 106 | } | ||
| 107 | } | ||
| 108 | |||
| 109 | return subs; | ||
| 110 | } | ||
| 111 | |||
| 112 | public boolean isEnum() { | ||
| 113 | ClassType superclass = superclass(); | ||
| 114 | if (superclass != null && | ||
| 115 | superclass.name().equals("java.lang.Enum")) { | ||
| 116 | return true; | ||
| 117 | } | ||
| 118 | return false; | ||
| 119 | } | ||
| 120 | |||
| 121 | public void setValue(Field field, Value value) | ||
| 122 | throws InvalidTypeException, ClassNotLoadedException { | ||
| 123 | |||
| 124 | validateMirror(field); | ||
| 125 | validateMirrorOrNull(value); | ||
| 126 | validateFieldSet(field); | ||
| 127 | |||
| 128 | // More validation specific to setting from a ClassType | ||
| 129 | if(!field.isStatic()) { | ||
| 130 | throw new IllegalArgumentException( | ||
| 131 | "Must set non-static field through an instance"); | ||
| 132 | } | ||
| 133 | |||
| 134 | try { | ||
| 135 | JDWP.ClassType.SetValues.FieldValue[] values = | ||
| 136 | new JDWP.ClassType.SetValues.FieldValue[1]; | ||
| 137 | values[0] = new JDWP.ClassType.SetValues.FieldValue( | ||
| 138 | ((FieldImpl)field).ref(), | ||
| 139 | // validate and convert if necessary | ||
| 140 | ValueImpl.prepareForAssignment(value, (FieldImpl)field)); | ||
| 141 | |||
| 142 | try { | ||
| 143 | JDWP.ClassType.SetValues.process(vm, this, values); | ||
| 144 | } catch (JDWPException exc) { | ||
| 145 | throw exc.toJDIException(); | ||
| 146 | } | ||
| 147 | } catch (ClassNotLoadedException e) { | ||
| 148 | /* | ||
| 149 | * Since we got this exception, | ||
| 150 | * the field type must be a reference type. The value | ||
| 151 | * we're trying to set is null, but if the field's | ||
| 152 | * class has not yet been loaded through the enclosing | ||
| 153 | * class loader, then setting to null is essentially a | ||
| 154 | * no-op, and we should allow it without an exception. | ||
| 155 | */ | ||
| 156 | if (value != null) { | ||
| 157 | throw e; | ||
| 158 | } | ||
| 159 | } | ||
| 160 | } | ||
| 161 | |||
| 162 | PacketStream sendInvokeCommand(final ThreadReferenceImpl thread, | ||
| 163 | final MethodImpl method, | ||
| 164 | final ValueImpl[] args, | ||
| 165 | final int options) { | ||
| 166 | CommandSender sender = | ||
| 167 | new CommandSender() { | ||
| 168 | public PacketStream send() { | ||
| 169 | return JDWP.ClassType.InvokeMethod.enqueueCommand( | ||
| 170 | vm, ClassTypeImpl.this, thread, | ||
| 171 | method.ref(), args, options); | ||
| 172 | } | ||
| 173 | }; | ||
| 174 | |||
| 175 | PacketStream stream; | ||
| 176 | if ((options & INVOKE_SINGLE_THREADED) != 0) { | ||
| 177 | stream = thread.sendResumingCommand(sender); | ||
| 178 | } else { | ||
| 179 | stream = vm.sendResumingCommand(sender); | ||
| 180 | } | ||
| 181 | return stream; | ||
| 182 | } | ||
| 183 | |||
| 184 | PacketStream sendNewInstanceCommand(final ThreadReferenceImpl thread, | ||
| 185 | final MethodImpl method, | ||
| 186 | final ValueImpl[] args, | ||
| 187 | final int options) { | ||
| 188 | CommandSender sender = | ||
| 189 | new CommandSender() { | ||
| 190 | public PacketStream send() { | ||
| 191 | return JDWP.ClassType.NewInstance.enqueueCommand( | ||
| 192 | vm, ClassTypeImpl.this, thread, | ||
| 193 | method.ref(), args, options); | ||
| 194 | } | ||
| 195 | }; | ||
| 196 | |||
| 197 | PacketStream stream; | ||
| 198 | if ((options & INVOKE_SINGLE_THREADED) != 0) { | ||
| 199 | stream = thread.sendResumingCommand(sender); | ||
| 200 | } else { | ||
| 201 | stream = vm.sendResumingCommand(sender); | ||
| 202 | } | ||
| 203 | return stream; | ||
| 204 | } | ||
| 205 | |||
| 206 | public Value invokeMethod(ThreadReference threadIntf, Method methodIntf, | ||
| 207 | List<? extends Value> origArguments, int options) | ||
| 208 | throws InvalidTypeException, | ||
| 209 | ClassNotLoadedException, | ||
| 210 | IncompatibleThreadStateException, | ||
| 211 | InvocationException { | ||
| 212 | validateMirror(threadIntf); | ||
| 213 | validateMirror(methodIntf); | ||
| 214 | validateMirrorsOrNulls(origArguments); | ||
| 215 | |||
| 216 | MethodImpl method = (MethodImpl)methodIntf; | ||
| 217 | ThreadReferenceImpl thread = (ThreadReferenceImpl)threadIntf; | ||
| 218 | |||
| 219 | validateMethodInvocation(method); | ||
| 220 | |||
| 221 | List<? extends Value> arguments = method.validateAndPrepareArgumentsForInvoke(origArguments); | ||
| 222 | |||
| 223 | ValueImpl[] args = arguments.toArray(new ValueImpl[0]); | ||
| 224 | JDWP.ClassType.InvokeMethod ret; | ||
| 225 | try { | ||
| 226 | PacketStream stream = | ||
| 227 | sendInvokeCommand(thread, method, args, options); | ||
| 228 | ret = JDWP.ClassType.InvokeMethod.waitForReply(vm, stream); | ||
| 229 | } catch (JDWPException exc) { | ||
| 230 | if (exc.errorCode() == JDWP.Error.INVALID_THREAD) { | ||
| 231 | throw new IncompatibleThreadStateException(); | ||
| 232 | } else { | ||
| 233 | throw exc.toJDIException(); | ||
| 234 | } | ||
| 235 | } | ||
| 236 | |||
| 237 | /* | ||
| 238 | * There is an implict VM-wide suspend at the conclusion | ||
| 239 | * of a normal (non-single-threaded) method invoke | ||
| 240 | */ | ||
| 241 | if ((options & INVOKE_SINGLE_THREADED) == 0) { | ||
| 242 | vm.notifySuspend(); | ||
| 243 | } | ||
| 244 | |||
| 245 | if (ret.exception != null) { | ||
| 246 | throw new InvocationException(ret.exception); | ||
| 247 | } else { | ||
| 248 | return ret.returnValue; | ||
| 249 | } | ||
| 250 | } | ||
| 251 | |||
| 252 | public ObjectReference newInstance(ThreadReference threadIntf, | ||
| 253 | Method methodIntf, | ||
| 254 | List<? extends Value> origArguments, | ||
| 255 | int options) | ||
| 256 | throws InvalidTypeException, | ||
| 257 | ClassNotLoadedException, | ||
| 258 | IncompatibleThreadStateException, | ||
| 259 | InvocationException { | ||
| 260 | validateMirror(threadIntf); | ||
| 261 | validateMirror(methodIntf); | ||
| 262 | validateMirrorsOrNulls(origArguments); | ||
| 263 | |||
| 264 | MethodImpl method = (MethodImpl)methodIntf; | ||
| 265 | ThreadReferenceImpl thread = (ThreadReferenceImpl)threadIntf; | ||
| 266 | |||
| 267 | validateConstructorInvocation(method); | ||
| 268 | |||
| 269 | List<Value> arguments = method.validateAndPrepareArgumentsForInvoke( | ||
| 270 | origArguments); | ||
| 271 | ValueImpl[] args = arguments.toArray(new ValueImpl[0]); | ||
| 272 | JDWP.ClassType.NewInstance ret = null; | ||
| 273 | try { | ||
| 274 | PacketStream stream = | ||
| 275 | sendNewInstanceCommand(thread, method, args, options); | ||
| 276 | ret = JDWP.ClassType.NewInstance.waitForReply(vm, stream); | ||
| 277 | } catch (JDWPException exc) { | ||
| 278 | if (exc.errorCode() == JDWP.Error.INVALID_THREAD) { | ||
| 279 | throw new IncompatibleThreadStateException(); | ||
| 280 | } else { | ||
| 281 | throw exc.toJDIException(); | ||
| 282 | } | ||
| 283 | } | ||
| 284 | |||
| 285 | /* | ||
| 286 | * There is an implict VM-wide suspend at the conclusion | ||
| 287 | * of a normal (non-single-threaded) method invoke | ||
| 288 | */ | ||
| 289 | if ((options & INVOKE_SINGLE_THREADED) == 0) { | ||
| 290 | vm.notifySuspend(); | ||
| 291 | } | ||
| 292 | |||
| 293 | if (ret.exception != null) { | ||
| 294 | throw new InvocationException(ret.exception); | ||
| 295 | } else { | ||
| 296 | return ret.newObject; | ||
| 297 | } | ||
| 298 | } | ||
| 299 | |||
| 300 | public Method concreteMethodByName(String name, String signature) { | ||
| 301 | Method method = null; | ||
| 302 | for (Method candidate : visibleMethods()) { | ||
| 303 | if (candidate.name().equals(name) && | ||
| 304 | candidate.signature().equals(signature) && | ||
| 305 | !candidate.isAbstract()) { | ||
| 306 | |||
| 307 | method = candidate; | ||
| 308 | break; | ||
| 309 | } | ||
| 310 | } | ||
| 311 | return method; | ||
| 312 | } | ||
| 313 | |||
| 314 | public List<Method> allMethods() { | ||
| 315 | ArrayList<Method> list = new ArrayList<Method>(methods()); | ||
| 316 | |||
| 317 | ClassType clazz = superclass(); | ||
| 318 | while (clazz != null) { | ||
| 319 | list.addAll(clazz.methods()); | ||
| 320 | clazz = clazz.superclass(); | ||
| 321 | } | ||
| 322 | |||
| 323 | /* | ||
| 324 | * Avoid duplicate checking on each method by iterating through | ||
| 325 | * duplicate-free allInterfaces() rather than recursing | ||
| 326 | */ | ||
| 327 | for (InterfaceType interfaze : allInterfaces()) { | ||
| 328 | list.addAll(interfaze.methods()); | ||
| 329 | } | ||
| 330 | |||
| 331 | return list; | ||
| 332 | } | ||
| 333 | |||
| 334 | List<ReferenceType> inheritedTypes() { | ||
| 335 | List<ReferenceType> inherited = new ArrayList<ReferenceType>(); | ||
| 336 | if (superclass() != null) { | ||
| 337 | inherited.add(0, (ReferenceType)superclass()); /* insert at front */ | ||
| 338 | } | ||
| 339 | for (ReferenceType rt : interfaces()) { | ||
| 340 | inherited.add(rt); | ||
| 341 | } | ||
| 342 | return inherited; | ||
| 343 | } | ||
| 344 | |||
| 345 | void validateMethodInvocation(Method method) | ||
| 346 | throws InvalidTypeException, | ||
| 347 | InvocationException { | ||
| 348 | /* | ||
| 349 | * Method must be in this class or a superclass. | ||
| 350 | */ | ||
| 351 | ReferenceTypeImpl declType = (ReferenceTypeImpl)method.declaringType(); | ||
| 352 | if (!declType.isAssignableFrom(this)) { | ||
| 353 | throw new IllegalArgumentException("Invalid method"); | ||
| 354 | } | ||
| 355 | |||
| 356 | /* | ||
| 357 | * Method must be a static and not a static initializer | ||
| 358 | */ | ||
| 359 | if (!method.isStatic()) { | ||
| 360 | throw new IllegalArgumentException("Cannot invoke instance method on a class type"); | ||
| 361 | } else if (method.isStaticInitializer()) { | ||
| 362 | throw new IllegalArgumentException("Cannot invoke static initializer"); | ||
| 363 | } | ||
| 364 | } | ||
| 365 | |||
| 366 | void validateConstructorInvocation(Method method) | ||
| 367 | throws InvalidTypeException, | ||
| 368 | InvocationException { | ||
| 369 | /* | ||
| 370 | * Method must be in this class. | ||
| 371 | */ | ||
| 372 | ReferenceTypeImpl declType = (ReferenceTypeImpl)method.declaringType(); | ||
| 373 | if (!declType.equals(this)) { | ||
| 374 | throw new IllegalArgumentException("Invalid constructor"); | ||
| 375 | } | ||
| 376 | |||
| 377 | /* | ||
| 378 | * Method must be a constructor | ||
| 379 | */ | ||
| 380 | if (!method.isConstructor()) { | ||
| 381 | throw new IllegalArgumentException("Cannot create instance with non-constructor"); | ||
| 382 | } | ||
| 383 | } | ||
| 384 | |||
| 385 | void addVisibleMethods(Map<String, Method> methodMap) { | ||
| 386 | /* | ||
| 387 | * Add methods from | ||
| 388 | * parent types first, so that the methods in this class will | ||
| 389 | * overwrite them in the hash table | ||
| 390 | */ | ||
| 391 | |||
| 392 | Iterator iter = interfaces().iterator(); | ||
| 393 | while (iter.hasNext()) { | ||
| 394 | InterfaceTypeImpl interfaze = (InterfaceTypeImpl)iter.next(); | ||
| 395 | interfaze.addVisibleMethods(methodMap); | ||
| 396 | } | ||
| 397 | |||
| 398 | ClassTypeImpl clazz = (ClassTypeImpl)superclass(); | ||
| 399 | if (clazz != null) { | ||
| 400 | clazz.addVisibleMethods(methodMap); | ||
| 401 | } | ||
| 402 | |||
| 403 | addToMethodMap(methodMap, methods()); | ||
| 404 | } | ||
| 405 | |||
| 406 | boolean isAssignableTo(ReferenceType type) { | ||
| 407 | ClassTypeImpl superclazz = (ClassTypeImpl)superclass(); | ||
| 408 | if (this.equals(type)) { | ||
| 409 | return true; | ||
| 410 | } else if ((superclazz != null) && superclazz.isAssignableTo(type)) { | ||
| 411 | return true; | ||
| 412 | } else { | ||
| 413 | List<InterfaceType> interfaces = interfaces(); | ||
| 414 | Iterator iter = interfaces.iterator(); | ||
| 415 | while (iter.hasNext()) { | ||
| 416 | InterfaceTypeImpl interfaze = (InterfaceTypeImpl)iter.next(); | ||
| 417 | if (interfaze.isAssignableTo(type)) { | ||
| 418 | return true; | ||
| 419 | } | ||
| 420 | } | ||
| 421 | return false; | ||
| 422 | } | ||
| 423 | } | ||
| 424 | |||
| 425 | public String toString() { | ||
| 426 | return "class " + name() + " (" + loaderString() + ")"; | ||
| 427 | } | ||
| 428 | } | ||