| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.debug.core.logicalstructures; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.debug.core.DebugEvent; |
| import org.eclipse.debug.core.DebugException; |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.core.IStatusHandler; |
| import org.eclipse.debug.core.model.IDebugTarget; |
| import org.eclipse.debug.core.model.ILogicalStructureTypeDelegate; |
| import org.eclipse.debug.core.model.IThread; |
| import org.eclipse.debug.core.model.IValue; |
| import org.eclipse.jdt.debug.core.IEvaluationRunnable; |
| import org.eclipse.jdt.debug.core.IJavaClassType; |
| import org.eclipse.jdt.debug.core.IJavaDebugTarget; |
| import org.eclipse.jdt.debug.core.IJavaInterfaceType; |
| import org.eclipse.jdt.debug.core.IJavaObject; |
| import org.eclipse.jdt.debug.core.IJavaThread; |
| import org.eclipse.jdt.debug.core.IJavaType; |
| import org.eclipse.jdt.internal.debug.core.JDIDebugPlugin; |
| |
| /** |
| * Common facilities for logical structure types for instances of an interface |
| */ |
| public abstract class LogicalObjectStructureInterfaceType implements ILogicalStructureTypeDelegate { |
| |
| private IJavaObject fObject; // the map to provide structure for |
| |
| private IValue fResult; // the resulting structure |
| |
| private boolean fDone = false; // done the evaluation |
| |
| private static IStatus fgNeedThread = new Status(IStatus.INFO, JDIDebugPlugin.getUniqueIdentifier(), LogicalObjectStructureInterfaceType.INFO_EVALUATION_THREAD, "Provides thread context for an evaluation", null); //$NON-NLS-1$ |
| private static IStatusHandler fgThreadProvider; |
| |
| /** |
| * Status code used by the debug model to retrieve a thread to use |
| * for evalutaions, via a status handler. A status handler is contributed by |
| * the Java debug UI. When not present, the debug model uses any suspended thread. |
| * |
| * @since 3.0 |
| */ |
| public static final int INFO_EVALUATION_THREAD = 110; |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.core.model.ILogicalStructureType#providesLogicalStructure(org.eclipse.debug.core.model.IValue) |
| */ |
| public boolean providesLogicalStructure(IValue value) { |
| if (value instanceof IJavaObject) { |
| IJavaObject object = (IJavaObject) value; |
| try { |
| IJavaType type = object.getJavaType(); |
| if (type instanceof IJavaClassType) { |
| IJavaClassType classType = (IJavaClassType) type; |
| IJavaInterfaceType[] interfaceTypes = classType.getAllInterfaces(); |
| String targetInterface = getTargetInterfaceName(); |
| for (int i = 0; i < interfaceTypes.length; i++) { |
| IJavaInterfaceType inter = interfaceTypes[i]; |
| if (inter.getName().equals(targetInterface)) { |
| return true; |
| } |
| } |
| } |
| } catch (DebugException e) { |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Returns the name of an interface that an object must implement for this |
| * structure type to be appropriate. |
| * |
| * @return the name of an interface that an object must implement for this |
| * structure type to be appropriate |
| */ |
| protected abstract String getTargetInterfaceName(); |
| |
| /** |
| * Returns the evaluation that computes the logical object structure for this |
| * strucutre type. |
| * |
| * @return the evaluation that computes the logical object structure for this |
| * strucutre type |
| */ |
| protected abstract IEvaluationRunnable getEvaluation(); |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.core.model.ILogicalStructureType#getLogicalStructure(org.eclipse.debug.core.model.IValue) |
| */ |
| public synchronized IValue getLogicalStructure(IValue value) throws CoreException { |
| final IJavaThread thread = getThread(value); |
| if (thread == null) { |
| // can't do it |
| throw new CoreException(new Status(IStatus.ERROR, JDIDebugPlugin.getUniqueIdentifier(), JDIDebugPlugin.INTERNAL_ERROR, LogicalStructuresMessages.getString("LogicalObjectStructureType.1"), null)); //$NON-NLS-1$ |
| } |
| setObject((IJavaObject)value); |
| final IEvaluationRunnable evaluation = getEvaluation(); |
| final CoreException[] ex = new CoreException[1]; |
| final Object lock = this; |
| fDone = false; |
| if (thread.isPerformingEvaluation() && thread.isSuspended()) { |
| return value; |
| } |
| thread.queueRunnable(new Runnable() { |
| public void run() { |
| try { |
| thread.runEvaluation(evaluation, null, DebugEvent.EVALUATION_IMPLICIT, false); |
| } catch (DebugException e) { |
| ex[0] = e; |
| } |
| synchronized (lock) { |
| fDone = true; |
| lock.notifyAll(); |
| } |
| } |
| }); |
| try { |
| synchronized (lock) { |
| if (!fDone) { |
| lock.wait(); |
| } |
| } |
| } catch (InterruptedException e) { |
| } |
| return fResult; |
| } |
| |
| private IJavaThread getThread(IValue value) throws CoreException { |
| IStatusHandler handler = getThreadProvider(); |
| if (handler != null) { |
| IJavaThread thread = (IJavaThread)handler.handleStatus(fgNeedThread, value); |
| if (thread != null) { |
| return thread; |
| } |
| } |
| IDebugTarget target = value.getDebugTarget(); |
| IJavaDebugTarget javaTarget = (IJavaDebugTarget) target.getAdapter(IJavaDebugTarget.class); |
| if (javaTarget != null) { |
| IThread[] threads = javaTarget.getThreads(); |
| for (int i = 0; i < threads.length; i++) { |
| IThread thread = threads[i]; |
| if (thread.isSuspended()) { |
| return (IJavaThread)thread; |
| } |
| } |
| } |
| return null; |
| } |
| |
| private static IStatusHandler getThreadProvider() { |
| if (fgThreadProvider == null) { |
| fgThreadProvider = DebugPlugin.getDefault().getStatusHandler(fgNeedThread); |
| } |
| return fgThreadProvider; |
| } |
| |
| /** |
| * Sets the object for which a logical structure is to be provided. |
| * |
| * @param object the object for which a logical structure is to be provided |
| */ |
| private void setObject(IJavaObject object) { |
| fObject = object; |
| } |
| |
| /** |
| * Returns the object for which a logical structure is to be provided |
| * |
| * @return the object for which a logical structure is to be provided |
| */ |
| protected IJavaObject getObject() { |
| return fObject; |
| } |
| |
| /** |
| * Sets the object representing the logical structure. |
| * |
| * @param result the object representing the logical structure |
| */ |
| protected void setLogicalStructure(IValue result) { |
| fResult = result; |
| } |
| |
| } |