| /* |
| * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.jdi; |
| |
| import com.sun.jdi.*; |
| |
| import java.util.*; |
| |
| final public class ClassTypeImpl extends InvokableTypeImpl |
| implements ClassType |
| { |
| private static class IResult implements InvocationResult { |
| final private JDWP.ClassType.InvokeMethod rslt; |
| |
| public IResult(JDWP.ClassType.InvokeMethod rslt) { |
| this.rslt = rslt; |
| } |
| |
| @Override |
| public ObjectReferenceImpl getException() { |
| return rslt.exception; |
| } |
| |
| @Override |
| public ValueImpl getResult() { |
| return rslt.returnValue; |
| } |
| } |
| |
| private boolean cachedSuperclass = false; |
| private ClassType superclass = null; |
| private int lastLine = -1; |
| private List<InterfaceType> interfaces = null; |
| |
| protected ClassTypeImpl(VirtualMachine aVm,long aRef) { |
| super(aVm, aRef); |
| } |
| |
| public ClassType superclass() { |
| if(!cachedSuperclass) { |
| ClassTypeImpl sup = null; |
| try { |
| sup = JDWP.ClassType.Superclass. |
| process(vm, this).superclass; |
| } catch (JDWPException exc) { |
| throw exc.toJDIException(); |
| } |
| |
| /* |
| * If there is a superclass, cache its |
| * ClassType here. Otherwise, |
| * leave the cache reference null. |
| */ |
| if (sup != null) { |
| superclass = sup; |
| } |
| cachedSuperclass = true; |
| } |
| |
| return superclass; |
| } |
| |
| @Override |
| public List<InterfaceType> interfaces() { |
| if (interfaces == null) { |
| interfaces = getInterfaces(); |
| } |
| return interfaces; |
| } |
| |
| @Override |
| public List<InterfaceType> allInterfaces() { |
| return getAllInterfaces(); |
| } |
| |
| public List<ClassType> subclasses() { |
| List<ClassType> subs = new ArrayList<ClassType>(); |
| for (ReferenceType refType : vm.allClasses()) { |
| if (refType instanceof ClassType) { |
| ClassType clazz = (ClassType)refType; |
| ClassType superclass = clazz.superclass(); |
| if ((superclass != null) && superclass.equals(this)) { |
| subs.add((ClassType)refType); |
| } |
| } |
| } |
| |
| return subs; |
| } |
| |
| public boolean isEnum() { |
| ClassType superclass = superclass(); |
| if (superclass != null && |
| superclass.name().equals("java.lang.Enum")) { |
| return true; |
| } |
| return false; |
| } |
| |
| public void setValue(Field field, Value value) |
| throws InvalidTypeException, ClassNotLoadedException { |
| |
| validateMirror(field); |
| validateMirrorOrNull(value); |
| validateFieldSet(field); |
| |
| // More validation specific to setting from a ClassType |
| if(!field.isStatic()) { |
| throw new IllegalArgumentException( |
| "Must set non-static field through an instance"); |
| } |
| |
| try { |
| JDWP.ClassType.SetValues.FieldValue[] values = |
| new JDWP.ClassType.SetValues.FieldValue[1]; |
| values[0] = new JDWP.ClassType.SetValues.FieldValue( |
| ((FieldImpl)field).ref(), |
| // validate and convert if necessary |
| ValueImpl.prepareForAssignment(value, (FieldImpl)field)); |
| |
| try { |
| JDWP.ClassType.SetValues.process(vm, this, values); |
| } catch (JDWPException exc) { |
| throw exc.toJDIException(); |
| } |
| } catch (ClassNotLoadedException e) { |
| /* |
| * Since we got this exception, |
| * the field type must be a reference type. The value |
| * we're trying to set is null, but if the field's |
| * class has not yet been loaded through the enclosing |
| * class loader, then setting to null is essentially a |
| * no-op, and we should allow it without an exception. |
| */ |
| if (value != null) { |
| throw e; |
| } |
| } |
| } |
| |
| PacketStream sendNewInstanceCommand(final ThreadReferenceImpl thread, |
| final MethodImpl method, |
| final ValueImpl[] args, |
| final int options) { |
| CommandSender sender = |
| new CommandSender() { |
| public PacketStream send() { |
| return JDWP.ClassType.NewInstance.enqueueCommand( |
| vm, ClassTypeImpl.this, thread, |
| method.ref(), args, options); |
| } |
| }; |
| |
| PacketStream stream; |
| if ((options & INVOKE_SINGLE_THREADED) != 0) { |
| stream = thread.sendResumingCommand(sender); |
| } else { |
| stream = vm.sendResumingCommand(sender); |
| } |
| return stream; |
| } |
| |
| public ObjectReference newInstance(ThreadReference threadIntf, |
| Method methodIntf, |
| List<? extends Value> origArguments, |
| int options) |
| throws InvalidTypeException, |
| ClassNotLoadedException, |
| IncompatibleThreadStateException, |
| InvocationException { |
| validateMirror(threadIntf); |
| validateMirror(methodIntf); |
| validateMirrorsOrNulls(origArguments); |
| |
| MethodImpl method = (MethodImpl)methodIntf; |
| ThreadReferenceImpl thread = (ThreadReferenceImpl)threadIntf; |
| |
| validateConstructorInvocation(method); |
| |
| List<Value> arguments = method.validateAndPrepareArgumentsForInvoke( |
| origArguments); |
| ValueImpl[] args = arguments.toArray(new ValueImpl[0]); |
| JDWP.ClassType.NewInstance ret = null; |
| try { |
| PacketStream stream = |
| sendNewInstanceCommand(thread, method, args, options); |
| ret = JDWP.ClassType.NewInstance.waitForReply(vm, stream); |
| } catch (JDWPException exc) { |
| if (exc.errorCode() == JDWP.Error.INVALID_THREAD) { |
| throw new IncompatibleThreadStateException(); |
| } else { |
| throw exc.toJDIException(); |
| } |
| } |
| |
| /* |
| * There is an implict VM-wide suspend at the conclusion |
| * of a normal (non-single-threaded) method invoke |
| */ |
| if ((options & INVOKE_SINGLE_THREADED) == 0) { |
| vm.notifySuspend(); |
| } |
| |
| if (ret.exception != null) { |
| throw new InvocationException(ret.exception); |
| } else { |
| return ret.newObject; |
| } |
| } |
| |
| public Method concreteMethodByName(String name, String signature) { |
| Method method = null; |
| for (Method candidate : visibleMethods()) { |
| if (candidate.name().equals(name) && |
| candidate.signature().equals(signature) && |
| !candidate.isAbstract()) { |
| |
| method = candidate; |
| break; |
| } |
| } |
| return method; |
| } |
| |
| void validateConstructorInvocation(Method method) |
| throws InvalidTypeException, |
| InvocationException { |
| /* |
| * Method must be in this class. |
| */ |
| ReferenceTypeImpl declType = (ReferenceTypeImpl)method.declaringType(); |
| if (!declType.equals(this)) { |
| throw new IllegalArgumentException("Invalid constructor"); |
| } |
| |
| /* |
| * Method must be a constructor |
| */ |
| if (!method.isConstructor()) { |
| throw new IllegalArgumentException("Cannot create instance with non-constructor"); |
| } |
| } |
| |
| |
| public String toString() { |
| return "class " + name() + " (" + loaderString() + ")"; |
| } |
| |
| @Override |
| CommandSender getInvokeMethodSender(ThreadReferenceImpl thread, |
| MethodImpl method, |
| ValueImpl[] args, |
| int options) { |
| return () -> |
| JDWP.ClassType.InvokeMethod.enqueueCommand(vm, |
| ClassTypeImpl.this, |
| thread, |
| method.ref(), |
| args, |
| options); |
| } |
| |
| @Override |
| InvocationResult waitForReply(PacketStream stream) throws JDWPException { |
| return new IResult(JDWP.ClassType.InvokeMethod.waitForReply(vm, stream)); |
| } |
| |
| @Override |
| boolean canInvoke(Method method) { |
| // Method must be in this class or a superclass. |
| return ((ReferenceTypeImpl)method.declaringType()).isAssignableFrom(this); |
| } |
| } |