J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-2004 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any 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<ReferenceType> all = vm.allClasses(); |
| 99 | List<ClassType> subs = new ArrayList<ClassType>(); |
| 100 | Iterator iter = all.iterator(); |
| 101 | while (iter.hasNext()) { |
| 102 | ReferenceType refType = (ReferenceType)iter.next(); |
| 103 | if (refType instanceof ClassType) { |
| 104 | ClassType clazz = (ClassType)refType; |
| 105 | ClassType superclass = clazz.superclass(); |
| 106 | if ((superclass != null) && superclass.equals(this)) { |
| 107 | subs.add((ClassType)refType); |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | return subs; |
| 113 | } |
| 114 | |
| 115 | public boolean isEnum() { |
| 116 | ClassType superclass = superclass(); |
| 117 | if (superclass != null && |
| 118 | superclass.name().equals("java.lang.Enum")) { |
| 119 | return true; |
| 120 | } |
| 121 | return false; |
| 122 | } |
| 123 | |
| 124 | public void setValue(Field field, Value value) |
| 125 | throws InvalidTypeException, ClassNotLoadedException { |
| 126 | |
| 127 | validateMirror(field); |
| 128 | validateMirrorOrNull(value); |
| 129 | validateFieldSet(field); |
| 130 | |
| 131 | // More validation specific to setting from a ClassType |
| 132 | if(!field.isStatic()) { |
| 133 | throw new IllegalArgumentException( |
| 134 | "Must set non-static field through an instance"); |
| 135 | } |
| 136 | |
| 137 | try { |
| 138 | JDWP.ClassType.SetValues.FieldValue[] values = |
| 139 | new JDWP.ClassType.SetValues.FieldValue[1]; |
| 140 | values[0] = new JDWP.ClassType.SetValues.FieldValue( |
| 141 | ((FieldImpl)field).ref(), |
| 142 | // validate and convert if necessary |
| 143 | ValueImpl.prepareForAssignment(value, (FieldImpl)field)); |
| 144 | |
| 145 | try { |
| 146 | JDWP.ClassType.SetValues.process(vm, this, values); |
| 147 | } catch (JDWPException exc) { |
| 148 | throw exc.toJDIException(); |
| 149 | } |
| 150 | } catch (ClassNotLoadedException e) { |
| 151 | /* |
| 152 | * Since we got this exception, |
| 153 | * the field type must be a reference type. The value |
| 154 | * we're trying to set is null, but if the field's |
| 155 | * class has not yet been loaded through the enclosing |
| 156 | * class loader, then setting to null is essentially a |
| 157 | * no-op, and we should allow it without an exception. |
| 158 | */ |
| 159 | if (value != null) { |
| 160 | throw e; |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | PacketStream sendInvokeCommand(final ThreadReferenceImpl thread, |
| 166 | final MethodImpl method, |
| 167 | final ValueImpl[] args, |
| 168 | final int options) { |
| 169 | CommandSender sender = |
| 170 | new CommandSender() { |
| 171 | public PacketStream send() { |
| 172 | return JDWP.ClassType.InvokeMethod.enqueueCommand( |
| 173 | vm, ClassTypeImpl.this, thread, |
| 174 | method.ref(), args, options); |
| 175 | } |
| 176 | }; |
| 177 | |
| 178 | PacketStream stream; |
| 179 | if ((options & INVOKE_SINGLE_THREADED) != 0) { |
| 180 | stream = thread.sendResumingCommand(sender); |
| 181 | } else { |
| 182 | stream = vm.sendResumingCommand(sender); |
| 183 | } |
| 184 | return stream; |
| 185 | } |
| 186 | |
| 187 | PacketStream sendNewInstanceCommand(final ThreadReferenceImpl thread, |
| 188 | final MethodImpl method, |
| 189 | final ValueImpl[] args, |
| 190 | final int options) { |
| 191 | CommandSender sender = |
| 192 | new CommandSender() { |
| 193 | public PacketStream send() { |
| 194 | return JDWP.ClassType.NewInstance.enqueueCommand( |
| 195 | vm, ClassTypeImpl.this, thread, |
| 196 | method.ref(), args, options); |
| 197 | } |
| 198 | }; |
| 199 | |
| 200 | PacketStream stream; |
| 201 | if ((options & INVOKE_SINGLE_THREADED) != 0) { |
| 202 | stream = thread.sendResumingCommand(sender); |
| 203 | } else { |
| 204 | stream = vm.sendResumingCommand(sender); |
| 205 | } |
| 206 | return stream; |
| 207 | } |
| 208 | |
| 209 | public Value invokeMethod(ThreadReference threadIntf, Method methodIntf, |
| 210 | List<? extends Value> origArguments, int options) |
| 211 | throws InvalidTypeException, |
| 212 | ClassNotLoadedException, |
| 213 | IncompatibleThreadStateException, |
| 214 | InvocationException { |
| 215 | validateMirror(threadIntf); |
| 216 | validateMirror(methodIntf); |
| 217 | validateMirrorsOrNulls(origArguments); |
| 218 | |
| 219 | MethodImpl method = (MethodImpl)methodIntf; |
| 220 | ThreadReferenceImpl thread = (ThreadReferenceImpl)threadIntf; |
| 221 | |
| 222 | validateMethodInvocation(method); |
| 223 | |
| 224 | List<? extends Value> arguments = method.validateAndPrepareArgumentsForInvoke(origArguments); |
| 225 | |
| 226 | ValueImpl[] args = (ValueImpl[])arguments.toArray(new ValueImpl[0]); |
| 227 | JDWP.ClassType.InvokeMethod ret; |
| 228 | try { |
| 229 | PacketStream stream = |
| 230 | sendInvokeCommand(thread, method, args, options); |
| 231 | ret = JDWP.ClassType.InvokeMethod.waitForReply(vm, stream); |
| 232 | } catch (JDWPException exc) { |
| 233 | if (exc.errorCode() == JDWP.Error.INVALID_THREAD) { |
| 234 | throw new IncompatibleThreadStateException(); |
| 235 | } else { |
| 236 | throw exc.toJDIException(); |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | /* |
| 241 | * There is an implict VM-wide suspend at the conclusion |
| 242 | * of a normal (non-single-threaded) method invoke |
| 243 | */ |
| 244 | if ((options & INVOKE_SINGLE_THREADED) == 0) { |
| 245 | vm.notifySuspend(); |
| 246 | } |
| 247 | |
| 248 | if (ret.exception != null) { |
| 249 | throw new InvocationException(ret.exception); |
| 250 | } else { |
| 251 | return ret.returnValue; |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | public ObjectReference newInstance(ThreadReference threadIntf, |
| 256 | Method methodIntf, |
| 257 | List<? extends Value> origArguments, |
| 258 | int options) |
| 259 | throws InvalidTypeException, |
| 260 | ClassNotLoadedException, |
| 261 | IncompatibleThreadStateException, |
| 262 | InvocationException { |
| 263 | validateMirror(threadIntf); |
| 264 | validateMirror(methodIntf); |
| 265 | validateMirrorsOrNulls(origArguments); |
| 266 | |
| 267 | MethodImpl method = (MethodImpl)methodIntf; |
| 268 | ThreadReferenceImpl thread = (ThreadReferenceImpl)threadIntf; |
| 269 | |
| 270 | validateConstructorInvocation(method); |
| 271 | |
| 272 | List<Value> arguments = method.validateAndPrepareArgumentsForInvoke( |
| 273 | origArguments); |
| 274 | ValueImpl[] args = (ValueImpl[])arguments.toArray(new ValueImpl[0]); |
| 275 | JDWP.ClassType.NewInstance ret = null; |
| 276 | try { |
| 277 | PacketStream stream = |
| 278 | sendNewInstanceCommand(thread, method, args, options); |
| 279 | ret = JDWP.ClassType.NewInstance.waitForReply(vm, stream); |
| 280 | } catch (JDWPException exc) { |
| 281 | if (exc.errorCode() == JDWP.Error.INVALID_THREAD) { |
| 282 | throw new IncompatibleThreadStateException(); |
| 283 | } else { |
| 284 | throw exc.toJDIException(); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | /* |
| 289 | * There is an implict VM-wide suspend at the conclusion |
| 290 | * of a normal (non-single-threaded) method invoke |
| 291 | */ |
| 292 | if ((options & INVOKE_SINGLE_THREADED) == 0) { |
| 293 | vm.notifySuspend(); |
| 294 | } |
| 295 | |
| 296 | if (ret.exception != null) { |
| 297 | throw new InvocationException(ret.exception); |
| 298 | } else { |
| 299 | return ret.newObject; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | public Method concreteMethodByName(String name, String signature) { |
| 304 | List methods = visibleMethods(); |
| 305 | Method method = null; |
| 306 | Iterator iter = methods.iterator(); |
| 307 | while (iter.hasNext()) { |
| 308 | Method candidate = (Method)iter.next(); |
| 309 | if (candidate.name().equals(name) && |
| 310 | candidate.signature().equals(signature) && |
| 311 | !candidate.isAbstract()) { |
| 312 | |
| 313 | method = candidate; |
| 314 | break; |
| 315 | } |
| 316 | } |
| 317 | return method; |
| 318 | } |
| 319 | |
| 320 | public List<Method> allMethods() { |
| 321 | ArrayList<Method> list = new ArrayList<Method>(methods()); |
| 322 | |
| 323 | ClassType clazz = superclass(); |
| 324 | while (clazz != null) { |
| 325 | list.addAll(clazz.methods()); |
| 326 | clazz = clazz.superclass(); |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | * Avoid duplicate checking on each method by iterating through |
| 331 | * duplicate-free allInterfaces() rather than recursing |
| 332 | */ |
| 333 | Iterator iter = allInterfaces().iterator(); |
| 334 | while (iter.hasNext()) { |
| 335 | InterfaceType interfaze = (InterfaceType)iter.next(); |
| 336 | list.addAll(interfaze.methods()); |
| 337 | } |
| 338 | |
| 339 | return list; |
| 340 | } |
| 341 | |
| 342 | List<ReferenceType> inheritedTypes() { |
| 343 | List<ReferenceType> inherited = new ArrayList<ReferenceType>(); |
| 344 | if (superclass() != null) { |
| 345 | inherited.add(0, (ReferenceType)superclass()); /* insert at front */ |
| 346 | } |
| 347 | for (ReferenceType rt : interfaces()) { |
| 348 | inherited.add(rt); |
| 349 | } |
| 350 | return inherited; |
| 351 | } |
| 352 | |
| 353 | void validateMethodInvocation(Method method) |
| 354 | throws InvalidTypeException, |
| 355 | InvocationException { |
| 356 | /* |
| 357 | * Method must be in this class or a superclass. |
| 358 | */ |
| 359 | ReferenceTypeImpl declType = (ReferenceTypeImpl)method.declaringType(); |
| 360 | if (!declType.isAssignableFrom(this)) { |
| 361 | throw new IllegalArgumentException("Invalid method"); |
| 362 | } |
| 363 | |
| 364 | /* |
| 365 | * Method must be a static and not a static initializer |
| 366 | */ |
| 367 | if (!method.isStatic()) { |
| 368 | throw new IllegalArgumentException("Cannot invoke instance method on a class type"); |
| 369 | } else if (method.isStaticInitializer()) { |
| 370 | throw new IllegalArgumentException("Cannot invoke static initializer"); |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | void validateConstructorInvocation(Method method) |
| 375 | throws InvalidTypeException, |
| 376 | InvocationException { |
| 377 | /* |
| 378 | * Method must be in this class. |
| 379 | */ |
| 380 | ReferenceTypeImpl declType = (ReferenceTypeImpl)method.declaringType(); |
| 381 | if (!declType.equals(this)) { |
| 382 | throw new IllegalArgumentException("Invalid constructor"); |
| 383 | } |
| 384 | |
| 385 | /* |
| 386 | * Method must be a constructor |
| 387 | */ |
| 388 | if (!method.isConstructor()) { |
| 389 | throw new IllegalArgumentException("Cannot create instance with non-constructor"); |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | void addVisibleMethods(Map<String, Method> methodMap) { |
| 394 | /* |
| 395 | * Add methods from |
| 396 | * parent types first, so that the methods in this class will |
| 397 | * overwrite them in the hash table |
| 398 | */ |
| 399 | |
| 400 | Iterator iter = interfaces().iterator(); |
| 401 | while (iter.hasNext()) { |
| 402 | InterfaceTypeImpl interfaze = (InterfaceTypeImpl)iter.next(); |
| 403 | interfaze.addVisibleMethods(methodMap); |
| 404 | } |
| 405 | |
| 406 | ClassTypeImpl clazz = (ClassTypeImpl)superclass(); |
| 407 | if (clazz != null) { |
| 408 | clazz.addVisibleMethods(methodMap); |
| 409 | } |
| 410 | |
| 411 | addToMethodMap(methodMap, methods()); |
| 412 | } |
| 413 | |
| 414 | boolean isAssignableTo(ReferenceType type) { |
| 415 | ClassTypeImpl superclazz = (ClassTypeImpl)superclass(); |
| 416 | if (this.equals(type)) { |
| 417 | return true; |
| 418 | } else if ((superclazz != null) && superclazz.isAssignableTo(type)) { |
| 419 | return true; |
| 420 | } else { |
| 421 | List<InterfaceType> interfaces = interfaces(); |
| 422 | Iterator iter = interfaces.iterator(); |
| 423 | while (iter.hasNext()) { |
| 424 | InterfaceTypeImpl interfaze = (InterfaceTypeImpl)iter.next(); |
| 425 | if (interfaze.isAssignableTo(type)) { |
| 426 | return true; |
| 427 | } |
| 428 | } |
| 429 | return false; |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | public String toString() { |
| 434 | return "class " + name() + " (" + loaderString() + ")"; |
| 435 | } |
| 436 | } |