/*******************************************************************************
* Copyright (c) 2000, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.core;
import java.io.File;
import java.util.*;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IResourceDeltaVisitor;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.IWorkspaceRunnable;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.resources.WorkspaceJob;
import org.eclipse.core.runtime.*;
import org.eclipse.jdt.core.*;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.internal.compiler.SourceElementParser;
import org.eclipse.jdt.internal.core.JavaModelManager.PerProjectInfo;
import org.eclipse.jdt.internal.core.builder.JavaBuilder;
import org.eclipse.jdt.internal.core.hierarchy.TypeHierarchy;
import org.eclipse.jdt.internal.core.search.AbstractSearchScope;
import org.eclipse.jdt.internal.core.search.JavaWorkspaceScope;
import org.eclipse.jdt.internal.core.search.indexing.IndexManager;
import org.eclipse.jdt.internal.core.util.Messages;
import org.eclipse.jdt.internal.core.util.Util;
/**
* This class is used by <code>JavaModelManager</code> to convert
* <code>IResourceDelta</code>s into <code>IJavaElementDelta</code>s.
* It also does some processing on the <code>JavaElement</code>s involved
* (e.g. closing them or updating classpaths).
* <p>
* High level summary of what the delta processor does:
* <ul>
* <li>reacts to resource deltas</li>
* <li>fires corresponding Java element deltas</li>
* <li>deltas also contain non-Java resources changes</li>
* <li>updates the model to reflect the Java element changes</li>
* <li>notifies type hierarchies of the changes</li>
* <li>triggers indexing of the changed elements</li>
* <li>refresh external archives (delta, model update, indexing)</li>
* <li>is thread safe (one delta processor instance per thread, see DeltaProcessingState#resourceChanged(...))</li>
* <li>handles .classpath changes (updates package fragment roots, update project references, validate classpath (.classpath format,
* resolved classpath, cycles))</li>
* </ul>
*/
public class DeltaProcessor {
static class OutputsInfo {
int outputCount;
IPath[] paths;
int[] traverseModes;
OutputsInfo(IPath[] paths, int[] traverseModes, int outputCount) {
this.paths = paths;
this.traverseModes = traverseModes;
this.outputCount = outputCount;
}
public String toString() {
if (this.paths == null) return "<none>"; //$NON-NLS-1$
StringBuffer buffer = new StringBuffer();
for (int i = 0; i < this.outputCount; i++) {
buffer.append("path="); //$NON-NLS-1$
buffer.append(this.paths[i].toString());
buffer.append("\n->traverse="); //$NON-NLS-1$
switch (this.traverseModes[i]) {
case BINARY:
buffer.append("BINARY"); //$NON-NLS-1$
break;
case IGNORE:
buffer.append("IGNORE"); //$NON-NLS-1$
break;
case SOURCE:
buffer.append("SOURCE"); //$NON-NLS-1$
break;
default:
buffer.append("<unknown>"); //$NON-NLS-1$
}
if (i+1 < this.outputCount) {
buffer.append('\n');
}
}
return buffer.toString();
}
}
public static class RootInfo {
char[][] inclusionPatterns;
char[][] exclusionPatterns;
public JavaProject project;
IPath rootPath;
int entryKind;
IPackageFragmentRoot root;
IPackageFragmentRoot cache;
RootInfo(JavaProject project, IPath rootPath, char[][] inclusionPatterns, char[][] exclusionPatterns, int entryKind) {
this.project = project;
this.rootPath = rootPath;
this.inclusionPatterns = inclusionPatterns;
this.exclusionPatterns = exclusionPatterns;
this.entryKind = entryKind;
this.cache = getPackageFragmentRoot();
}
public IPackageFragmentRoot getPackageFragmentRoot() {
IPackageFragmentRoot tRoot = null;
Object target = JavaModel.getTarget(this.rootPath, false/*don't check existence*/);
if (target instanceof IResource) {
tRoot = this.project.getPackageFragmentRoot((IResource)target);
} else {
tRoot = this.project.getPackageFragmentRoot(this.rootPath.toOSString());
}
return tRoot;
}
public IPackageFragmentRoot getPackageFragmentRoot(IResource resource) {
if (this.root == null) {
if (resource != null) {
this.root = this.project.getPackageFragmentRoot(resource);
} else {
this.root = getPackageFragmentRoot();
}
}
if (this.root != null)
this.cache = this.root;
return this.root;
}
boolean isRootOfProject(IPath path) {
return this.rootPath.equals(path) && this.project.getProject().getFullPath().isPrefixOf(path);
}
public String toString() {
StringBuffer buffer = new StringBuffer("project="); //$NON-NLS-1$
if (this.project == null) {
buffer.append("null"); //$NON-NLS-1$
} else {
buffer.append(this.project.getElementName());
}
buffer.append("\npath="); //$NON-NLS-1$
if (this.rootPath == null) {
buffer.append("null"); //$NON-NLS-1$
} else {
buffer.append(this.rootPath.toString());
}
buffer.append("\nincluding="); //$NON-NLS-1$
if (this.inclusionPatterns == null) {
buffer.append("null"); //$NON-NLS-1$
} else {
for (int i = 0, length = this.inclusionPatterns.length; i < length; i++) {
buffer.append(new String(this.inclusionPatterns[i]));
if (i < length-1) {
buffer.append("|"); //$NON-NLS-1$
}
}
}
buffer.append("\nexcluding="); //$NON-NLS-1$
if (this.exclusionPatterns == null) {
buffer.append("null"); //$NON-NLS-1$
} else {
for (int i = 0, length = this.exclusionPatterns.length; i < length; i++) {
buffer.append(new String(this.exclusionPatterns[i]));
if (i < length-1) {
buffer.append("|"); //$NON-NLS-1$
}
}
}
return buffer.toString();
}
}
private final static int IGNORE = 0;
private final static int SOURCE = 1;
private final static int BINARY = 2;
private final static String EXTERNAL_JAR_ADDED = "external jar added"; //$NON-NLS-1$
private final static String EXTERNAL_JAR_CHANGED = "external jar changed"; //$NON-NLS-1$
private final static String EXTERNAL_JAR_REMOVED = "external jar removed"; //$NON-NLS-1$
private final static String EXTERNAL_JAR_UNCHANGED = "external jar unchanged"; //$NON-NLS-1$
private final static String INTERNAL_JAR_IGNORE = "internal jar ignore"; //$NON-NLS-1$
private final static int NON_JAVA_RESOURCE = -1;
public static boolean DEBUG = false;
public static boolean VERBOSE = false;
public static boolean PERF = false;
public static final int DEFAULT_CHANGE_EVENT = 0; // must not collide with ElementChangedEvent event masks
/*
* Answer a combination of the lastModified stamp and the size.
* Used for detecting external JAR changes
*/
public static long getTimeStamp(File file) {
return file.lastModified() + file.length();
}
/*
* The global state of delta processing.
*/
private DeltaProcessingState state;
/*
* The Java model manager
*/
JavaModelManager manager;
/*
* The <code>JavaElementDelta</code> corresponding to the <code>IResourceDelta</code> being translated.
*/
private JavaElementDelta currentDelta;
/* The java element that was last created (see createElement(IResource)).
* This is used as a stack of java elements (using getParent() to pop it, and
* using the various get*(...) to push it. */
private Openable currentElement;
/*
* Queue of deltas created explicily by the Java Model that
* have yet to be fired.
*/
public ArrayList javaModelDeltas= new ArrayList();
/*
* Queue of reconcile deltas on working copies that have yet to be fired.
* This is a table form IWorkingCopy to IJavaElementDelta
*/
public HashMap reconcileDeltas = new HashMap();
/*
* Turns delta firing on/off. By default it is on.
*/
private boolean isFiring= true;
/*
* Used to update the JavaModel for <code>IJavaElementDelta</code>s.
*/
private final ModelUpdater modelUpdater = new ModelUpdater();
/* A set of IJavaProject whose caches need to be reset */
public HashSet projectCachesToReset = new HashSet();
/* A table from IJavaProject to an array of IPackageFragmentRoot.
* This table contains the pkg fragment roots of the project that are being deleted.
*/
public Map oldRoots;
/*
* Type of event that should be processed no matter what the real event type is.
*/
public int overridenEventType = -1;
/*
* Cache SourceElementParser for the project being visited
*/
private SourceElementParser sourceElementParserCache;
public DeltaProcessor(DeltaProcessingState state, JavaModelManager manager) {
this.state = state;
this.manager = manager;
}
/*
* Adds the dependents of the given project to the list of the projects
* to update.
*/
private void addDependentProjects(IJavaProject project, HashMap projectDependencies, HashSet result) {
IJavaProject[] dependents = (IJavaProject[]) projectDependencies.get(project);
if (dependents == null) return;
for (int i = 0, length = dependents.length; i < length; i++) {
IJavaProject dependent = dependents[i];
if (result.contains(dependent))
continue; // no need to go further as the project is already known
result.add(dependent);
addDependentProjects(dependent, projectDependencies, result);
}
}
/*
* Adds the given child handle to its parent's cache of children.
*/
private void addToParentInfo(Openable child) {
Openable parent = (Openable) child.getParent();
if (parent != null && parent.isOpen()) {
try {
OpenableElementInfo info = (OpenableElementInfo) parent.getElementInfo();
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=338006
// Insert the package fragment roots in the same order as the classpath order.
if (child instanceof IPackageFragmentRoot)
addPackageFragmentRoot(info, (IPackageFragmentRoot) child);
else
info.addChild(child);
} catch (JavaModelException e) {
// do nothing - we already checked if open
}
}
}
private void addPackageFragmentRoot(OpenableElementInfo parent, IPackageFragmentRoot child)
throws JavaModelException {
IJavaElement[] roots = parent.getChildren();
if (roots.length > 0) {
IClasspathEntry[] resolvedClasspath = ((JavaProject) child.getJavaProject()).getResolvedClasspath();
IPath currentEntryPath = child.getResolvedClasspathEntry().getPath();
int indexToInsert = -1;
int lastComparedIndex = -1;
int i = 0, j = 0;
for (; i < roots.length && j < resolvedClasspath.length;) {
IClasspathEntry classpathEntry = resolvedClasspath[j];
if (lastComparedIndex != j && currentEntryPath.equals(classpathEntry.getPath())) {
indexToInsert = i;
break;
}
lastComparedIndex = j;
IClasspathEntry rootEntry = ((IPackageFragmentRoot) roots[i]).getResolvedClasspathEntry();
if (rootEntry.getPath().equals(classpathEntry.getPath()))
i++;
else
j++;
}
for (; i < roots.length; i++) {
// If the new root is already among the children, no need to proceed further. Just return.
if (roots[i].equals(child)) {
return;
}
// If we start seeing root's classpath entry different from the child's entry, then the child can't
// be present further down the roots array.
if (!((IPackageFragmentRoot) roots[i]).getResolvedClasspathEntry().getPath()
.equals(currentEntryPath))
break;
}
if (indexToInsert >= 0) {
int newSize = roots.length + 1;
IPackageFragmentRoot[] newChildren = new IPackageFragmentRoot[newSize];
if (indexToInsert > 0)
System.arraycopy(roots, 0, newChildren, 0, indexToInsert);
newChildren[indexToInsert] = child;
System.arraycopy(roots, indexToInsert, newChildren, indexToInsert + 1, (newSize - indexToInsert - 1));
parent.setChildren(newChildren);
return;
}
}
parent.addChild(child);
}
/*
* Process the given delta and look for projects being added, opened, closed or
* with a java nature being added or removed.
* Note that projects being deleted are checked in deleting(IProject).
* In all cases, add the project's dependents to the list of projects to update
* so that the classpath related markers can be updated.
*/
private void checkProjectsAndClasspathChanges(IResourceDelta delta) {
IResource resource = delta.getResource();
IResourceDelta[] children = null;
switch (resource.getType()) {
case IResource.ROOT :
// workaround for bug 15168 circular errors not reported
this.state.getOldJavaProjecNames(); // force list to be computed
children = delta.getAffectedChildren();
break;
case IResource.PROJECT :
// NB: No need to check project's nature as if the project is not a java project:
// - if the project is added or changed this is a noop for projectsBeingDeleted
// - if the project is closed, it has already lost its java nature
IProject project = (IProject)resource;
JavaProject javaProject = (JavaProject)JavaCore.create(project);
switch (delta.getKind()) {
case IResourceDelta.ADDED :
this.manager.forceBatchInitializations(false/*not initAfterLoad*/);
// remember that the project's cache must be reset
this.projectCachesToReset.add(javaProject);
// workaround for bug 15168 circular errors not reported
if (JavaProject.hasJavaNature(project)) {
addToParentInfo(javaProject);
readRawClasspath(javaProject);
// ensure project references are updated (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=121569)
checkProjectReferenceChange(project, javaProject);
// and external folders as well
checkExternalFolderChange(project, javaProject);
}
this.state.rootsAreStale = true;
break;
case IResourceDelta.CHANGED :
if ((delta.getFlags() & IResourceDelta.OPEN) != 0) {
this.manager.forceBatchInitializations(false/*not initAfterLoad*/);
// remember that the project's cache must be reset
this.projectCachesToReset.add(javaProject);
// workaround for bug 15168 circular errors not reported
if (project.isOpen()) {
if (JavaProject.hasJavaNature(project)) {
addToParentInfo(javaProject);
readRawClasspath(javaProject);
// ensure project references are updated
checkProjectReferenceChange(project, javaProject);
// and external folders as well
checkExternalFolderChange(project, javaProject);
}
} else {
try {
javaProject.close();
} catch (JavaModelException e) {
// java project doesn't exist: ignore
}
removeFromParentInfo(javaProject);
this.manager.removePerProjectInfo(javaProject, false /* don't remove index files and timestamp info of external jar */);
this.manager.containerRemove(javaProject);
}
this.state.rootsAreStale = true;
} else if ((delta.getFlags() & IResourceDelta.DESCRIPTION) != 0) {
boolean wasJavaProject = this.state.findJavaProject(project.getName()) != null;
boolean isJavaProject = JavaProject.hasJavaNature(project);
if (wasJavaProject != isJavaProject) {
this.manager.forceBatchInitializations(false/*not initAfterLoad*/);
// java nature added or removed: remember that the project's cache must be reset
this.projectCachesToReset.add(javaProject);
// workaround for bug 15168 circular errors not reported
if (isJavaProject) {
addToParentInfo(javaProject);
readRawClasspath(javaProject);
// ensure project references are updated (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=172666)
checkProjectReferenceChange(project, javaProject);
// and external folders as well
checkExternalFolderChange(project, javaProject);
} else {
// remove classpath cache so that initializeRoots() will not consider the project has a classpath
this.manager.removePerProjectInfo(javaProject, true /* remove external jar files indexes and timestamps */);
// remove container cache for this project
this.manager.containerRemove(javaProject);
// close project
try {
javaProject.close();
} catch (JavaModelException e) {
// java project doesn't exist: ignore
}
removeFromParentInfo(javaProject);
}
this.state.rootsAreStale = true;
} else {
// in case the project was removed then added then changed (see bug 19799)
if (isJavaProject) { // need nature check - 18698
addToParentInfo(javaProject);
children = delta.getAffectedChildren();
}
}
} else {
// workaround for bug 15168 circular errors not reported
// in case the project was removed then added then changed
if (JavaProject.hasJavaNature(project)) { // need nature check - 18698
addToParentInfo(javaProject);
children = delta.getAffectedChildren();
}
}
break;
case IResourceDelta.REMOVED :
this.manager.forceBatchInitializations(false/*not initAfterLoad*/);
// remove classpath cache so that initializeRoots() will not consider the project has a classpath
this.manager.removePerProjectInfo(javaProject, true /* remove external jar files indexes and timestamps*/);
// remove container cache for this project
this.manager.containerRemove(javaProject);
this.state.rootsAreStale = true;
break;
}
break;
case IResource.FOLDER:
if (delta.getKind() == IResourceDelta.CHANGED) { // look for .jar file change to update classpath
children = delta.getAffectedChildren();
}
break;
case IResource.FILE :
IFile file = (IFile) resource;
int kind = delta.getKind();
RootInfo rootInfo;
if (file.getName().equals(JavaProject.CLASSPATH_FILENAME)) {
/* classpath file change */
this.manager.forceBatchInitializations(false/*not initAfterLoad*/);
switch (kind) {
case IResourceDelta.CHANGED :
int flags = delta.getFlags();
if ((flags & IResourceDelta.CONTENT) == 0 // only consider content change
&& (flags & IResourceDelta.ENCODING) == 0 // and encoding change
&& (flags & IResourceDelta.MOVED_FROM) == 0) {// and also move and overide scenario (see http://dev.eclipse.org/bugs/show_bug.cgi?id=21420)
break;
}
//$FALL-THROUGH$
case IResourceDelta.ADDED :
case IResourceDelta.REMOVED :
javaProject = (JavaProject)JavaCore.create(file.getProject());
// force to (re)read the .classpath file
// in case of removal (IResourceDelta.REMOVED) this will reset the classpath to its default and create the right delta
// (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=211290)
readRawClasspath(javaProject);
break;
}
this.state.rootsAreStale = true;
} else if ((rootInfo = rootInfo(file.getFullPath(), kind)) != null && rootInfo.entryKind == IClasspathEntry.CPE_LIBRARY) {
javaProject = (JavaProject)JavaCore.create(file.getProject());
javaProject.resetResolvedClasspath();
this.state.rootsAreStale = true;
}
break;
}
if (children != null) {
for (int i = 0; i < children.length; i++) {
checkProjectsAndClasspathChanges(children[i]);
}
}
}
private void checkExternalFolderChange(IProject project, JavaProject javaProject) {
ClasspathChange change = this.state.getClasspathChange(project);
this.state.addExternalFolderChange(javaProject, change == null ? null : change.oldResolvedClasspath);
}
private void checkProjectReferenceChange(IProject project, JavaProject javaProject) {
ClasspathChange change = this.state.getClasspathChange(project);
this.state.addProjectReferenceChange(javaProject, change == null ? null : change.oldResolvedClasspath);
}
private void readRawClasspath(JavaProject javaProject) {
// force to (re)read the .classpath file
try {
PerProjectInfo perProjectInfo = javaProject.getPerProjectInfo();
if (!perProjectInfo.writtingRawClasspath) // to avoid deadlock, see https://bugs.eclipse.org/bugs/show_bug.cgi?id=221680
perProjectInfo.readAndCacheClasspath(javaProject);
} catch (JavaModelException e) {
if (VERBOSE) {
e.printStackTrace();
}
}
}
private void checkSourceAttachmentChange(IResourceDelta delta, IResource res) {
IPath rootPath = (IPath)this.state.sourceAttachments.get(externalPath(res));
if (rootPath != null) {
RootInfo rootInfo = rootInfo(rootPath, delta.getKind());
if (rootInfo != null) {
IJavaProject projectOfRoot = rootInfo.project;
IPackageFragmentRoot root = null;
try {
// close the root so that source attachment cache is flushed
root = projectOfRoot.findPackageFragmentRoot(rootPath);
if (root != null) {
root.close();
}
} catch (JavaModelException e) {
// root doesn't exist: ignore
}
if (root == null) return;
switch (delta.getKind()) {
case IResourceDelta.ADDED:
currentDelta().sourceAttached(root);
break;
case IResourceDelta.CHANGED:
currentDelta().sourceDetached(root);
currentDelta().sourceAttached(root);
break;
case IResourceDelta.REMOVED:
currentDelta().sourceDetached(root);
break;
}
}
}
}
/*
* Closes the given element, which removes it from the cache of open elements.
*/
private void close(Openable element) {
try {
element.close();
} catch (JavaModelException e) {
// do nothing
}
}
/*
* Generic processing for elements with changed contents:<ul>
* <li>The element is closed such that any subsequent accesses will re-open
* the element reflecting its new structure.
* <li>An entry is made in the delta reporting a content change (K_CHANGE with F_CONTENT flag set).
* </ul>
* Delta argument could be null if processing an external JAR change
*/
private void contentChanged(Openable element) {
boolean isPrimary = false;
boolean isPrimaryWorkingCopy = false;
if (element.getElementType() == IJavaElement.COMPILATION_UNIT) {
CompilationUnit cu = (CompilationUnit)element;
isPrimary = cu.isPrimary();
isPrimaryWorkingCopy = isPrimary && cu.isWorkingCopy();
}
if (isPrimaryWorkingCopy) {
// filter out changes to primary compilation unit in working copy mode
// just report a change to the resource (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=59500)
currentDelta().changed(element, IJavaElementDelta.F_PRIMARY_RESOURCE);
} else {
close(element);
int flags = IJavaElementDelta.F_CONTENT;
if (element instanceof JarPackageFragmentRoot){
flags |= IJavaElementDelta.F_ARCHIVE_CONTENT_CHANGED;
// need also to reset project cache otherwise it will be out-of-date
// see bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=162621
this.projectCachesToReset.add(element.getJavaProject());
}
if (isPrimary) {
flags |= IJavaElementDelta.F_PRIMARY_RESOURCE;
}
currentDelta().changed(element, flags);
}
}
/*
* Creates the openables corresponding to this resource.
* Returns null if none was found.
*/
private Openable createElement(IResource resource, int elementType, RootInfo rootInfo) {
if (resource == null) return null;
IPath path = resource.getFullPath();
IJavaElement element = null;
switch (elementType) {
case IJavaElement.JAVA_PROJECT:
// note that non-java resources rooted at the project level will also enter this code with
// an elementType JAVA_PROJECT (see #elementType(...)).
if (resource instanceof IProject){
popUntilPrefixOf(path);
if (this.currentElement != null
&& this.currentElement.getElementType() == IJavaElement.JAVA_PROJECT
&& ((IJavaProject)this.currentElement).getProject().equals(resource)) {
return this.currentElement;
}
if (rootInfo != null && rootInfo.project.getProject().equals(resource)){
element = rootInfo.project;
break;
}
IProject proj = (IProject)resource;
if (JavaProject.hasJavaNature(proj)) {
element = JavaCore.create(proj);
} else {
// java project may have been been closed or removed (look for
// element amongst old java project s list).
element = this.state.findJavaProject(proj.getName());
}
}
break;
case IJavaElement.PACKAGE_FRAGMENT_ROOT:
element = rootInfo == null ? JavaCore.create(resource) : rootInfo.getPackageFragmentRoot(resource);
break;
case IJavaElement.PACKAGE_FRAGMENT:
if (rootInfo != null) {
if (rootInfo.project.contains(resource)) {
PackageFragmentRoot root = (PackageFragmentRoot) rootInfo.getPackageFragmentRoot(null);
// create package handle
IPath pkgPath = path.removeFirstSegments(root.resource().getFullPath().segmentCount());
String[] pkgName = pkgPath.segments();
element = root.getPackageFragment(pkgName);
}
} else {
// find the element that encloses the resource
popUntilPrefixOf(path);
if (this.currentElement == null) {
element = JavaCore.create(resource);
} else {
// find the root
PackageFragmentRoot root = this.currentElement.getPackageFragmentRoot();
if (root == null) {
element = JavaCore.create(resource);
} else if (((JavaProject)root.getJavaProject()).contains(resource)) {
// create package handle
IPath pkgPath = path.removeFirstSegments(root.getPath().segmentCount());
String[] pkgName = pkgPath.segments();
element = root.getPackageFragment(pkgName);
}
}
}
break;
case IJavaElement.COMPILATION_UNIT:
case IJavaElement.CLASS_FILE:
// find the element that encloses the resource
popUntilPrefixOf(path);
if (this.currentElement == null) {
element = rootInfo == null ? JavaCore.create(resource) : JavaModelManager.create(resource, rootInfo.project);
} else {
// find the package
IPackageFragment pkgFragment = null;
switch (this.currentElement.getElementType()) {
case IJavaElement.PACKAGE_FRAGMENT_ROOT:
PackageFragmentRoot root = (PackageFragmentRoot)this.currentElement;
IPath rootPath = root.getPath();
IPath pkgPath = path.removeLastSegments(1);
String[] pkgName = pkgPath.removeFirstSegments(rootPath.segmentCount()).segments();
pkgFragment = root.getPackageFragment(pkgName);
break;
case IJavaElement.PACKAGE_FRAGMENT:
Openable pkg = this.currentElement;
if (pkg.getPath().equals(path.removeLastSegments(1))) {
pkgFragment = (IPackageFragment)pkg;
} // else case of package x which is a prefix of x.y
break;
case IJavaElement.COMPILATION_UNIT:
case IJavaElement.CLASS_FILE:
pkgFragment = (IPackageFragment)this.currentElement.getParent();
break;
}
if (pkgFragment == null) {
element = rootInfo == null ? JavaCore.create(resource) : JavaModelManager.create(resource, rootInfo.project);
} else {
if (elementType == IJavaElement.COMPILATION_UNIT) {
// create compilation unit handle
// fileName validation has been done in elementType(IResourceDelta, int, boolean)
String fileName = path.lastSegment();
element = pkgFragment.getCompilationUnit(fileName);
} else {
// create class file handle
// fileName validation has been done in elementType(IResourceDelta, int, boolean)
String fileName = path.lastSegment();
element = pkgFragment.getClassFile(fileName);
}
}
}
break;
}
if (element == null) return null;
this.currentElement = (Openable)element;
return this.currentElement;
}
public void checkExternalArchiveChanges(IJavaElement[] elementsScope, IProgressMonitor monitor) throws JavaModelException {
checkExternalArchiveChanges(elementsScope, false, monitor);
}
/*
* Check all external archive (referenced by given roots, projects or model) status and issue a corresponding root delta.
* Also triggers index updates
*/
private void checkExternalArchiveChanges(IJavaElement[] elementsScope, boolean asynchronous, IProgressMonitor monitor) throws JavaModelException {
if (monitor != null && monitor.isCanceled())
throw new OperationCanceledException();
try {
if (monitor != null) monitor.beginTask("", 1); //$NON-NLS-1$
boolean hasExternalWorkingCopyProject = false;
for (int i = 0, length = elementsScope.length; i < length; i++) {
IJavaElement element = elementsScope[i];
this.state.addForRefresh(elementsScope[i]);
if (element.getElementType() == IJavaElement.JAVA_MODEL) {
// ensure external working copies' projects' caches are reset
HashSet projects = JavaModelManager.getJavaModelManager().getExternalWorkingCopyProjects();
if (projects != null) {
hasExternalWorkingCopyProject = true;
Iterator iterator = projects.iterator();
while (iterator.hasNext()) {
JavaProject project = (JavaProject) iterator.next();
project.resetCaches();
}
}
}
}
HashSet elementsToRefresh = this.state.removeExternalElementsToRefresh();
boolean hasDelta = elementsToRefresh != null && createExternalArchiveDelta(elementsToRefresh, monitor);
if (hasDelta){
IJavaElementDelta[] projectDeltas = this.currentDelta.getAffectedChildren();
final int length = projectDeltas.length;
final IProject[] projectsToTouch = new IProject[length];
for (int i = 0; i < length; i++) {
IJavaElementDelta delta = projectDeltas[i];
JavaProject javaProject = (JavaProject)delta.getElement();
projectsToTouch[i] = javaProject.getProject();
}
if (projectsToTouch.length > 0) {
if (asynchronous){
WorkspaceJob touchJob = new WorkspaceJob(Messages.updating_external_archives_jobName) {
public IStatus runInWorkspace(IProgressMonitor progressMonitor) throws CoreException {
try {
if (progressMonitor != null)
progressMonitor.beginTask("", projectsToTouch.length); //$NON-NLS-1$
touchProjects(projectsToTouch, progressMonitor);
}
finally {
if (progressMonitor != null)
progressMonitor.done();
}
return Status.OK_STATUS;
}
public boolean belongsTo(Object family) {
return ResourcesPlugin.FAMILY_MANUAL_REFRESH == family;
}
};
touchJob.schedule();
}
else {
// touch the projects to force them to be recompiled while taking the workspace lock
// so that there is no concurrency with the Java builder
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=96575
IWorkspaceRunnable runnable = new IWorkspaceRunnable() {
public void run(IProgressMonitor progressMonitor) throws CoreException {
for (int i = 0; i < projectsToTouch.length; i++) {
IProject project = projectsToTouch[i];
// touch to force a build of this project
if (JavaBuilder.DEBUG)
System.out.println("Touching project " + project.getName() + " due to external jar file change"); //$NON-NLS-1$ //$NON-NLS-2$
project.touch(progressMonitor);
}
}
};
try {
ResourcesPlugin.getWorkspace().run(runnable, monitor);
} catch (CoreException e) {
throw new JavaModelException(e);
}
}
}
if (this.currentDelta != null) { // if delta has not been fired while creating markers
fire(this.currentDelta, DEFAULT_CHANGE_EVENT);
}
} else if (hasExternalWorkingCopyProject) {
// flush jar type cache
JavaModelManager.getJavaModelManager().resetJarTypeCache();
}
} finally {
this.currentDelta = null;
if (monitor != null) monitor.done();
}
}
protected void touchProjects(final IProject[] projectsToTouch, IProgressMonitor progressMonitor)
throws CoreException {
for (int i = 0; i < projectsToTouch.length; i++) {
IProgressMonitor monitor = progressMonitor == null ? null: new SubProgressMonitor(progressMonitor, 1);
IProject project = projectsToTouch[i];
// touch to force a build of this project
if (JavaBuilder.DEBUG)
System.out.println("Touching project " + project.getName() + " due to external jar file change"); //$NON-NLS-1$ //$NON-NLS-2$
project.touch(monitor);
}
}
/*
* Check if external archives have changed for the given elements and create the corresponding deltas.
* Returns whether at least one delta was created.
*/
private boolean createExternalArchiveDelta(HashSet refreshedElements, IProgressMonitor monitor) {
HashMap externalArchivesStatus = new HashMap();
boolean hasDelta = false;
// find JARs to refresh
HashSet archivePathsToRefresh = new HashSet();
Iterator iterator = refreshedElements.iterator();
while (iterator.hasNext()) {
IJavaElement element = (IJavaElement)iterator.next();
switch(element.getElementType()){
case IJavaElement.PACKAGE_FRAGMENT_ROOT :
archivePathsToRefresh.add(element.getPath());
break;
case IJavaElement.JAVA_PROJECT :
JavaProject javaProject = (JavaProject) element;
if (!JavaProject.hasJavaNature(javaProject.getProject())) {
// project is not accessible or has lost its Java nature
break;
}
IClasspathEntry[] classpath;
try {
classpath = javaProject.getResolvedClasspath();
for (int j = 0, cpLength = classpath.length; j < cpLength; j++){
if (classpath[j].getEntryKind() == IClasspathEntry.CPE_LIBRARY){
archivePathsToRefresh.add(classpath[j].getPath());
}
}
} catch (JavaModelException e) {
// project doesn't exist -> ignore
}
break;
case IJavaElement.JAVA_MODEL :
Iterator projectNames = this.state.getOldJavaProjecNames().iterator();
while (projectNames.hasNext()) {
String projectName = (String) projectNames.next();
IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(projectName);
if (!JavaProject.hasJavaNature(project)) {
// project is not accessible or has lost its Java nature
continue;
}
javaProject = (JavaProject) JavaCore.create(project);
try {
classpath = javaProject.getResolvedClasspath();
for (int k = 0, cpLength = classpath.length; k < cpLength; k++){
if (classpath[k].getEntryKind() == IClasspathEntry.CPE_LIBRARY){
archivePathsToRefresh.add(classpath[k].getPath());
}
}
} catch (JavaModelException e2) {
// project doesn't exist -> ignore
continue;
}
}
break;
}
}
// perform refresh
Iterator projectNames = this.state.getOldJavaProjecNames().iterator();
IWorkspaceRoot wksRoot = ResourcesPlugin.getWorkspace().getRoot();
while (projectNames.hasNext()) {
if (monitor != null && monitor.isCanceled()) break;
String projectName = (String) projectNames.next();
IProject project = wksRoot.getProject(projectName);
if (!JavaProject.hasJavaNature(project)) {
// project is not accessible or has lost its Java nature
continue;
}
JavaProject javaProject = (JavaProject) JavaCore.create(project);
IClasspathEntry[] entries;
try {
entries = javaProject.getResolvedClasspath();
} catch (JavaModelException e1) {
// project does not exist -> ignore
continue;
}
for (int j = 0; j < entries.length; j++){
if (entries[j].getEntryKind() == IClasspathEntry.CPE_LIBRARY) {
IPath entryPath = entries[j].getPath();
if (!archivePathsToRefresh.contains(entryPath)) continue; // not supposed to be refreshed
String status = (String)externalArchivesStatus.get(entryPath);
if (status == null){
// compute shared status
Object targetLibrary = JavaModel.getTarget(entryPath, true);
if (targetLibrary == null){ // missing JAR
if (this.state.getExternalLibTimeStamps().remove(entryPath) != null /* file was known*/
&& this.state.roots.get(entryPath) != null /* and it was on the classpath*/) {
externalArchivesStatus.put(entryPath, EXTERNAL_JAR_REMOVED);
// the jar was physically removed: remove the index
this.manager.indexManager.removeIndex(entryPath);
}
} else if (targetLibrary instanceof File){ // external JAR
File externalFile = (File)targetLibrary;
// check timestamp to figure if JAR has changed in some way
Long oldTimestamp =(Long) this.state.getExternalLibTimeStamps().get(entryPath);
long newTimeStamp = getTimeStamp(externalFile);
if (oldTimestamp != null){
if (newTimeStamp == 0){ // file doesn't exist
externalArchivesStatus.put(entryPath, EXTERNAL_JAR_REMOVED);
this.state.getExternalLibTimeStamps().remove(entryPath);
// remove the index
this.manager.indexManager.removeIndex(entryPath);
} else if (oldTimestamp.longValue() != newTimeStamp){
externalArchivesStatus.put(entryPath, EXTERNAL_JAR_CHANGED);
this.state.getExternalLibTimeStamps().put(entryPath, new Long(newTimeStamp));
// first remove the index so that it is forced to be re-indexed
this.manager.indexManager.removeIndex(entryPath);
// then index the jar
this.manager.indexManager.indexLibrary(entryPath, project.getProject());
} else {
externalArchivesStatus.put(entryPath, EXTERNAL_JAR_UNCHANGED);
}
} else {
if (newTimeStamp == 0){ // jar still doesn't exist
externalArchivesStatus.put(entryPath, EXTERNAL_JAR_UNCHANGED);
} else {
externalArchivesStatus.put(entryPath, EXTERNAL_JAR_ADDED);
this.state.getExternalLibTimeStamps().put(entryPath, new Long(newTimeStamp));
// index the new jar
this.manager.indexManager.removeIndex(entryPath);
this.manager.indexManager.indexLibrary(entryPath, project.getProject());
}
}
} else { // internal JAR
externalArchivesStatus.put(entryPath, INTERNAL_JAR_IGNORE);
}
}
// according to computed status, generate a delta
status = (String)externalArchivesStatus.get(entryPath);
if (status != null){
if (status == EXTERNAL_JAR_ADDED){
PackageFragmentRoot root = (PackageFragmentRoot) javaProject.getPackageFragmentRoot(entryPath.toString());
if (VERBOSE){
System.out.println("- External JAR ADDED, affecting root: "+root.getElementName()); //$NON-NLS-1$
}
elementAdded(root, null, null);
javaProject.resetResolvedClasspath(); // in case it contains a chained jar
this.state.addClasspathValidation(javaProject); // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=185733
hasDelta = true;
} else if (status == EXTERNAL_JAR_CHANGED) {
PackageFragmentRoot root = (PackageFragmentRoot) javaProject.getPackageFragmentRoot(entryPath.toString());
if (VERBOSE){
System.out.println("- External JAR CHANGED, affecting root: "+root.getElementName()); //$NON-NLS-1$
}
contentChanged(root);
javaProject.resetResolvedClasspath(); // in case it contains a chained jar
hasDelta = true;
} else if (status == EXTERNAL_JAR_REMOVED) {
PackageFragmentRoot root = (PackageFragmentRoot) javaProject.getPackageFragmentRoot(entryPath.toString());
if (VERBOSE){
System.out.println("- External JAR REMOVED, affecting root: "+root.getElementName()); //$NON-NLS-1$
}
elementRemoved(root, null, null);
javaProject.resetResolvedClasspath(); // in case it contains a chained jar
this.state.addClasspathValidation(javaProject); // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=185733
hasDelta = true;
}
}
}
}
}
// ensure the external file cache is reset so that if a .jar file is deleted but no longer on the classpath, it won't appear as changed next time it is added
JavaModel.flushExternalFileCache();
if (hasDelta){
// flush jar type cache
JavaModelManager.getJavaModelManager().resetJarTypeCache();
}
return hasDelta;
}
private JavaElementDelta currentDelta() {
if (this.currentDelta == null) {
this.currentDelta = new JavaElementDelta(this.manager.getJavaModel());
}
return this.currentDelta;
}
/*
* Note that the project is about to be deleted.
*/
private void deleting(IProject project) {
try {
// discard indexing jobs that belong to this project so that the project can be
// deleted without interferences from the index manager
this.manager.indexManager.discardJobs(project.getName());
JavaProject javaProject = (JavaProject)JavaCore.create(project);
// remember roots of this project
if (this.oldRoots == null) {
this.oldRoots = new HashMap();
}
if (javaProject.isOpen()) {
this.oldRoots.put(javaProject, javaProject.getPackageFragmentRoots());
} else {
// compute roots without opening project
this.oldRoots.put(
javaProject,
javaProject.computePackageFragmentRoots(
javaProject.getResolvedClasspath(),
false,
null /*no reverse map*/));
}
javaProject.close();
// workaround for bug 15168 circular errors not reported
this.state.getOldJavaProjecNames(); // foce list to be computed
removeFromParentInfo(javaProject);
// remove preferences from per project info
this.manager.resetProjectPreferences(javaProject);
} catch (JavaModelException e) {
// java project doesn't exist: ignore
}
}
/*
* Processing for an element that has been added:<ul>
* <li>If the element is a project, do nothing, and do not process
* children, as when a project is created it does not yet have any
* natures - specifically a java nature.
* <li>If the elemet is not a project, process it as added (see
* <code>basicElementAdded</code>.
* </ul>
* Delta argument could be null if processing an external JAR change
*/
private void elementAdded(Openable element, IResourceDelta delta, RootInfo rootInfo) {
int elementType = element.getElementType();
if (elementType == IJavaElement.JAVA_PROJECT) {
// project add is handled by JavaProject.configure() because
// when a project is created, it does not yet have a java nature
IProject project;
if (delta != null && JavaProject.hasJavaNature(project = (IProject)delta.getResource())) {
addToParentInfo(element);
this.manager.getPerProjectInfo(project, true /*create info if needed*/).rememberExternalLibTimestamps();
if ((delta.getFlags() & IResourceDelta.MOVED_FROM) != 0) {
Openable movedFromElement = (Openable)element.getJavaModel().getJavaProject(delta.getMovedFromPath().lastSegment());
currentDelta().movedTo(element, movedFromElement);
} else {
// Force the project to be closed as it might have been opened
// before the resource modification came in and it might have a new child
// For example, in an IWorkspaceRunnable:
// 1. create a Java project P (where P=src)
// 2. open project P
// 3. add folder f in P's pkg fragment root
// When the resource delta comes in, only the addition of P is notified,
// but the pkg fragment root of project P is already opened, thus its children are not recomputed
// and it appears to contain only the default package.
close(element);
currentDelta().added(element);
}
this.state.updateRoots(element.getPath(), delta, this);
// remember that the project's cache must be reset
this.projectCachesToReset.add(element);
}
} else {
if (delta == null || (delta.getFlags() & IResourceDelta.MOVED_FROM) == 0) {
// regular element addition
if (isPrimaryWorkingCopy(element, elementType) ) {
// filter out changes to primary compilation unit in working copy mode
// just report a change to the resource (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=59500)
currentDelta().changed(element, IJavaElementDelta.F_PRIMARY_RESOURCE);
} else {
addToParentInfo(element);
// Force the element to be closed as it might have been opened
// before the resource modification came in and it might have a new child
// For example, in an IWorkspaceRunnable:
// 1. create a package fragment p using a java model operation
// 2. open package p
// 3. add file X.java in folder p
// When the resource delta comes in, only the addition of p is notified,
// but the package p is already opened, thus its children are not recomputed
// and it appears empty.
close(element);
currentDelta().added(element);
}
} else {
// element is moved
addToParentInfo(element);
close(element);
IPath movedFromPath = delta.getMovedFromPath();
IResource res = delta.getResource();
IResource movedFromRes;
if (res instanceof IFile) {
movedFromRes = res.getWorkspace().getRoot().getFile(movedFromPath);
} else {
movedFromRes = res.getWorkspace().getRoot().getFolder(movedFromPath);
}
// find the element type of the moved from element
IPath rootPath = externalPath(movedFromRes);
RootInfo movedFromInfo = enclosingRootInfo(rootPath, IResourceDelta.REMOVED);
int movedFromType =
elementType(
movedFromRes,
IResourceDelta.REMOVED,
element.getParent().getElementType(),
movedFromInfo);
// reset current element as it might be inside a nested root (popUntilPrefixOf() may use the outer root)
this.currentElement = null;
// create the moved from element
Openable movedFromElement =
elementType != IJavaElement.JAVA_PROJECT && movedFromType == IJavaElement.JAVA_PROJECT ?
null : // outside classpath
createElement(movedFromRes, movedFromType, movedFromInfo);
if (movedFromElement == null) {
// moved from outside classpath
currentDelta().added(element);
} else {
currentDelta().movedTo(element, movedFromElement);
}
}
switch (elementType) {
case IJavaElement.PACKAGE_FRAGMENT_ROOT :
// when a root is added, and is on the classpath, the project must be updated
JavaProject project = (JavaProject) element.getJavaProject();
// remember that the project's cache must be reset
this.projectCachesToReset.add(project);
break;
case IJavaElement.PACKAGE_FRAGMENT :
// reset project's package fragment cache
project = (JavaProject) element.getJavaProject();
this.projectCachesToReset.add(project);
break;
}
}
}
/*
* Generic processing for a removed element:<ul>
* <li>Close the element, removing its structure from the cache
* <li>Remove the element from its parent's cache of children
* <li>Add a REMOVED entry in the delta
* </ul>
* Delta argument could be null if processing an external JAR change
*/
private void elementRemoved(Openable element, IResourceDelta delta, RootInfo rootInfo) {
int elementType = element.getElementType();
if (delta == null || (delta.getFlags() & IResourceDelta.MOVED_TO) == 0) {
// regular element removal
if (isPrimaryWorkingCopy(element, elementType) ) {
// filter out changes to primary compilation unit in working copy mode
// just report a change to the resource (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=59500)
currentDelta().changed(element, IJavaElementDelta.F_PRIMARY_RESOURCE);
} else {
close(element);
removeFromParentInfo(element);
currentDelta().removed(element);
}
} else {
// element is moved
close(element);
removeFromParentInfo(element);
IPath movedToPath = delta.getMovedToPath();
IResource res = delta.getResource();
IResource movedToRes;
switch (res.getType()) {
case IResource.PROJECT:
movedToRes = res.getWorkspace().getRoot().getProject(movedToPath.lastSegment());
break;
case IResource.FOLDER:
movedToRes = res.getWorkspace().getRoot().getFolder(movedToPath);
break;
case IResource.FILE:
movedToRes = res.getWorkspace().getRoot().getFile(movedToPath);
break;
default:
return;
}
// find the element type of the moved from element
IPath rootPath = externalPath(movedToRes);
RootInfo movedToInfo = enclosingRootInfo(rootPath, IResourceDelta.ADDED);
int movedToType =
elementType(
movedToRes,
IResourceDelta.ADDED,
element.getParent().getElementType(),
movedToInfo);
// reset current element as it might be inside a nested root (popUntilPrefixOf() may use the outer root)
this.currentElement = null;
// create the moved To element
Openable movedToElement =
elementType != IJavaElement.JAVA_PROJECT && movedToType == IJavaElement.JAVA_PROJECT ?
null : // outside classpath
createElement(movedToRes, movedToType, movedToInfo);
if (movedToElement == null) {
// moved outside classpath
currentDelta().removed(element);
} else {
currentDelta().movedFrom(element, movedToElement);
}
}
switch (elementType) {
case IJavaElement.JAVA_MODEL :
this.manager.indexManager.reset();
break;
case IJavaElement.JAVA_PROJECT :
this.state.updateRoots(element.getPath(), delta, this);
// remember that the project's cache must be reset
this.projectCachesToReset.add(element);
break;
case IJavaElement.PACKAGE_FRAGMENT_ROOT :
JavaProject project = (JavaProject) element.getJavaProject();
// remember that the project's cache must be reset
this.projectCachesToReset.add(project);
break;
case IJavaElement.PACKAGE_FRAGMENT :
// reset package fragment cache
project = (JavaProject) element.getJavaProject();
this.projectCachesToReset.add(project);
break;
}
}
/*
* Returns the type of the java element the given delta matches to.
* Returns NON_JAVA_RESOURCE if unknown (e.g. a non-java resource or excluded .java file)
*/
private int elementType(IResource res, int kind, int parentType, RootInfo rootInfo) {
switch (parentType) {
case IJavaElement.JAVA_MODEL:
// case of a movedTo or movedFrom project (other cases are handled in processResourceDelta(...)
return IJavaElement.JAVA_PROJECT;
case NON_JAVA_RESOURCE:
case IJavaElement.JAVA_PROJECT:
if (rootInfo == null) {
rootInfo = enclosingRootInfo(res.getFullPath(), kind);
}
if (rootInfo != null && rootInfo.isRootOfProject(res.getFullPath())) {
return IJavaElement.PACKAGE_FRAGMENT_ROOT;
}
// not yet in a package fragment root or root of another project
// or package fragment to be included (see below)
// $FALL-THROUGH$
case IJavaElement.PACKAGE_FRAGMENT_ROOT:
case IJavaElement.PACKAGE_FRAGMENT:
if (rootInfo == null) {
IPath rootPath = externalPath(res);
rootInfo = enclosingRootInfo(rootPath, kind);
}
if (rootInfo == null) {
return NON_JAVA_RESOURCE;
}
if (Util.isExcluded(res, rootInfo.inclusionPatterns, rootInfo.exclusionPatterns)) {
return NON_JAVA_RESOURCE;
}
if (res.getType() == IResource.FOLDER) {
if (parentType == NON_JAVA_RESOURCE && !Util.isExcluded(res.getParent(), rootInfo.inclusionPatterns, rootInfo.exclusionPatterns)) {
// parent is a non-Java resource because it doesn't have a valid package name (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=130982)
return NON_JAVA_RESOURCE;
}
String sourceLevel = rootInfo.project == null ? null : rootInfo.project.getOption(JavaCore.COMPILER_SOURCE, true);
String complianceLevel = rootInfo.project == null ? null : rootInfo.project.getOption(JavaCore.COMPILER_COMPLIANCE, true);
if (Util.isValidFolderNameForPackage(res.getName(), sourceLevel, complianceLevel)) {
return IJavaElement.PACKAGE_FRAGMENT;
}
return NON_JAVA_RESOURCE;
}
String fileName = res.getName();
String sourceLevel = rootInfo.project == null ? null : rootInfo.project.getOption(JavaCore.COMPILER_SOURCE, true);
String complianceLevel = rootInfo.project == null ? null : rootInfo.project.getOption(JavaCore.COMPILER_COMPLIANCE, true);
if (Util.isValidCompilationUnitName(fileName, sourceLevel, complianceLevel)) {
return IJavaElement.COMPILATION_UNIT;
} else if (Util.isValidClassFileName(fileName, sourceLevel, complianceLevel)) {
return IJavaElement.CLASS_FILE;
} else {
IPath rootPath = externalPath(res);
if ((rootInfo = rootInfo(rootPath, kind)) != null
&& rootInfo.project.getProject().getFullPath().isPrefixOf(rootPath) /*ensure root is a root of its project (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=185310) */) {
// case of proj=src=bin and resource is a jar file on the classpath
return IJavaElement.PACKAGE_FRAGMENT_ROOT;
} else {
return NON_JAVA_RESOURCE;
}
}
default:
return NON_JAVA_RESOURCE;
}
}
/*
* Flushes all deltas without firing them.
*/
public void flush() {
this.javaModelDeltas = new ArrayList();
}
private SourceElementParser getSourceElementParser(Openable element) {
if (this.sourceElementParserCache == null)
this.sourceElementParserCache = this.manager.indexManager.getSourceElementParser(element.getJavaProject(), null/*requestor will be set by indexer*/);
return this.sourceElementParserCache;
}
/*
* Finds the root info this path is included in.
* Returns null if not found.
*/
private RootInfo enclosingRootInfo(IPath path, int kind) {
while (path != null && path.segmentCount() > 0) {
RootInfo rootInfo = rootInfo(path, kind);
if (rootInfo != null) return rootInfo;
path = path.removeLastSegments(1);
}
return null;
}
private IPath externalPath(IResource res) {
IPath resourcePath = res.getFullPath();
if (ExternalFoldersManager.isInternalPathForExternalFolder(resourcePath))
return res.getLocation();
return resourcePath;
}
/*
* Fire Java Model delta, flushing them after the fact after post_change notification.
* If the firing mode has been turned off, this has no effect.
*/
public void fire(IJavaElementDelta customDelta, int eventType) {
if (!this.isFiring) return;
if (DEBUG) {
System.out.println("-----------------------------------------------------------------------------------------------------------------------");//$NON-NLS-1$
}
IJavaElementDelta deltaToNotify;
if (customDelta == null){
deltaToNotify = mergeDeltas(this.javaModelDeltas);
} else {
deltaToNotify = customDelta;
}
// Refresh internal scopes
if (deltaToNotify != null) {
Iterator scopes = this.manager.searchScopes.keySet().iterator();
while (scopes.hasNext()) {
AbstractSearchScope scope = (AbstractSearchScope)scopes.next();
scope.processDelta(deltaToNotify, eventType);
}
JavaWorkspaceScope workspaceScope = this.manager.workspaceScope;
if (workspaceScope != null)
workspaceScope.processDelta(deltaToNotify, eventType);
}
// Notification
// Important: if any listener reacts to notification by updating the listeners list or mask, these lists will
// be duplicated, so it is necessary to remember original lists in a variable (since field values may change under us)
IElementChangedListener[] listeners;
int[] listenerMask;
int listenerCount;
synchronized (this.state) {
listeners = this.state.elementChangedListeners;
listenerMask = this.state.elementChangedListenerMasks;
listenerCount = this.state.elementChangedListenerCount;
}
switch (eventType) {
case DEFAULT_CHANGE_EVENT:
case ElementChangedEvent.POST_CHANGE:
firePostChangeDelta(deltaToNotify, listeners, listenerMask, listenerCount);
fireReconcileDelta(listeners, listenerMask, listenerCount);
break;
}
}
private void firePostChangeDelta(
IJavaElementDelta deltaToNotify,
IElementChangedListener[] listeners,
int[] listenerMask,
int listenerCount) {
// post change deltas
if (DEBUG){
System.out.println("FIRING POST_CHANGE Delta ["+Thread.currentThread()+"]:"); //$NON-NLS-1$//$NON-NLS-2$
System.out.println(deltaToNotify == null ? "<NONE>" : deltaToNotify.toString()); //$NON-NLS-1$
}
if (deltaToNotify != null) {
// flush now so as to keep listener reactions to post their own deltas for subsequent iteration
flush();
// mark the operation stack has not modifying resources since resource deltas are being fired
JavaModelOperation.setAttribute(JavaModelOperation.HAS_MODIFIED_RESOURCE_ATTR, null);
notifyListeners(deltaToNotify, ElementChangedEvent.POST_CHANGE, listeners, listenerMask, listenerCount);
}
}
private void fireReconcileDelta(
IElementChangedListener[] listeners,
int[] listenerMask,
int listenerCount) {
IJavaElementDelta deltaToNotify = mergeDeltas(this.reconcileDeltas.values());
if (DEBUG){
System.out.println("FIRING POST_RECONCILE Delta ["+Thread.currentThread()+"]:"); //$NON-NLS-1$//$NON-NLS-2$
System.out.println(deltaToNotify == null ? "<NONE>" : deltaToNotify.toString()); //$NON-NLS-1$
}
if (deltaToNotify != null) {
// flush now so as to keep listener reactions to post their own deltas for subsequent iteration
this.reconcileDeltas = new HashMap();
notifyListeners(deltaToNotify, ElementChangedEvent.POST_RECONCILE, listeners, listenerMask, listenerCount);
}
}
/*
* Returns whether a given delta contains some information relevant to the JavaModel,
* in particular it will not consider SYNC or MARKER only deltas.
*/
private boolean isAffectedBy(IResourceDelta rootDelta){
//if (rootDelta == null) System.out.println("NULL DELTA");
//long start = System.currentTimeMillis();
if (rootDelta != null) {
// use local exception to quickly escape from delta traversal
class FoundRelevantDeltaException extends RuntimeException {
private static final long serialVersionUID = 7137113252936111022L; // backward compatible
// only the class name is used (to differenciate from other RuntimeExceptions)
}
try {
rootDelta.accept(new IResourceDeltaVisitor() {
public boolean visit(IResourceDelta delta) /* throws CoreException */ {
switch (delta.getKind()){
case IResourceDelta.ADDED :
case IResourceDelta.REMOVED :
throw new FoundRelevantDeltaException();
case IResourceDelta.CHANGED :
// if any flag is set but SYNC or MARKER, this delta should be considered
if (delta.getAffectedChildren().length == 0 // only check leaf delta nodes
&& (delta.getFlags() & ~(IResourceDelta.SYNC | IResourceDelta.MARKERS)) != 0) {
throw new FoundRelevantDeltaException();
}
}
return true;
}
},
IContainer.INCLUDE_HIDDEN);
} catch(FoundRelevantDeltaException e) {
//System.out.println("RELEVANT DELTA detected in: "+ (System.currentTimeMillis() - start));
return true;
} catch(CoreException e) { // ignore delta if not able to traverse
}
}
//System.out.println("IGNORE SYNC DELTA took: "+ (System.currentTimeMillis() - start));
return false;
}
/*
* Returns whether the given element is a primary compilation unit in working copy mode.
*/
private boolean isPrimaryWorkingCopy(IJavaElement element, int elementType) {
if (elementType == IJavaElement.COMPILATION_UNIT) {
CompilationUnit cu = (CompilationUnit)element;
return cu.isPrimary() && cu.isWorkingCopy();
}
return false;
}
/*
* Returns whether the given resource is in one of the given output folders and if
* it is filtered out from this output folder.
*/
private boolean isResFilteredFromOutput(RootInfo rootInfo, OutputsInfo info, IResource res, int elementType) {
if (info != null) {
JavaProject javaProject = null;
String sourceLevel = null;
String complianceLevel = null;
IPath resPath = res.getFullPath();
for (int i = 0; i < info.outputCount; i++) {
if (info.paths[i].isPrefixOf(resPath)) {
if (info.traverseModes[i] != IGNORE) {
// case of bin=src
if (info.traverseModes[i] == SOURCE && elementType == IJavaElement.CLASS_FILE) {
return true;
}
// case of .class file under project and no source folder
// proj=bin
if (elementType == IJavaElement.JAVA_PROJECT && res instanceof IFile) {
if (sourceLevel == null) {
// Get java project to use its source and compliance levels
javaProject = rootInfo == null ?
(JavaProject)createElement(res.getProject(), IJavaElement.JAVA_PROJECT, null) :
rootInfo.project;
if (javaProject != null) {
sourceLevel = javaProject.getOption(JavaCore.COMPILER_SOURCE, true);
complianceLevel = javaProject.getOption(JavaCore.COMPILER_COMPLIANCE, true);
}
}
if (Util.isValidClassFileName(res.getName(), sourceLevel, complianceLevel)) {
return true;
}
}
} else {
return true;
}
}
}
}
return false;
}
/*
* Merges all awaiting deltas.
*/
private IJavaElementDelta mergeDeltas(Collection deltas) {
if (deltas.size() == 0) return null;
if (deltas.size() == 1) return (IJavaElementDelta)deltas.iterator().next();
if (VERBOSE) {
System.out.println("MERGING " + deltas.size() + " DELTAS ["+Thread.currentThread()+"]"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
Iterator iterator = deltas.iterator();
JavaElementDelta rootDelta = new JavaElementDelta(this.manager.javaModel);
boolean insertedTree = false;
while (iterator.hasNext()) {
JavaElementDelta delta = (JavaElementDelta)iterator.next();
if (VERBOSE) {
System.out.println(delta.toString());
}
IJavaElement element = delta.getElement();
if (this.manager.javaModel.equals(element)) {
IJavaElementDelta[] children = delta.getAffectedChildren();
for (int j = 0; j < children.length; j++) {
JavaElementDelta projectDelta = (JavaElementDelta) children[j];
rootDelta.insertDeltaTree(projectDelta.getElement(), projectDelta);
insertedTree = true;
}
IResourceDelta[] resourceDeltas = delta.getResourceDeltas();
if (resourceDeltas != null) {
for (int i = 0, length = resourceDeltas.length; i < length; i++) {
rootDelta.addResourceDelta(resourceDeltas[i]);
insertedTree = true;
}
}
} else {
rootDelta.insertDeltaTree(element, delta);
insertedTree = true;
}
}
if (insertedTree) return rootDelta;
return null;
}
private void notifyListeners(IJavaElementDelta deltaToNotify, int eventType, IElementChangedListener[] listeners, int[] listenerMask, int listenerCount) {
final ElementChangedEvent extraEvent = new ElementChangedEvent(deltaToNotify, eventType);
for (int i= 0; i < listenerCount; i++) {
if ((listenerMask[i] & eventType) != 0){
final IElementChangedListener listener = listeners[i];
long start = -1;
if (VERBOSE) {
System.out.print("Listener #" + (i+1) + "=" + listener.toString());//$NON-NLS-1$//$NON-NLS-2$
start = System.currentTimeMillis();
}
// wrap callbacks with Safe runnable for subsequent listeners to be called when some are causing grief
SafeRunner.run(new ISafeRunnable() {
public void handleException(Throwable exception) {
Util.log(exception, "Exception occurred in listener of Java element change notification"); //$NON-NLS-1$
}
public void run() throws Exception {
PerformanceStats stats = null;
if(PERF) {
stats = PerformanceStats.getStats(JavaModelManager.DELTA_LISTENER_PERF, listener);
stats.startRun();
}
listener.elementChanged(extraEvent);
if(PERF) {
stats.endRun();
}
}
});
if (VERBOSE) {
System.out.println(" -> " + (System.currentTimeMillis()-start) + "ms"); //$NON-NLS-1$ //$NON-NLS-2$
}
}
}
}
private void notifyTypeHierarchies(IElementChangedListener[] listeners, int listenerCount) {
for (int i= 0; i < listenerCount; i++) {
final IElementChangedListener listener = listeners[i];
if (!(listener instanceof TypeHierarchy)) continue;
// wrap callbacks with Safe runnable for subsequent listeners to be called when some are causing grief
SafeRunner.run(new ISafeRunnable() {
public void handleException(Throwable exception) {
Util.log(exception, "Exception occurred in listener of Java element change notification"); //$NON-NLS-1$
}
public void run() throws Exception {
TypeHierarchy typeHierarchy = (TypeHierarchy)listener;
if (typeHierarchy.hasFineGrainChanges()) {
// case of changes in primary working copies
typeHierarchy.needsRefresh = true;
typeHierarchy.fireChange();
}
}
});
}
}
/*
* Generic processing for elements with changed contents:<ul>
* <li>The element is closed such that any subsequent accesses will re-open
* the element reflecting its new structure.
* <li>An entry is made in the delta reporting a content change (K_CHANGE with F_CONTENT flag set).
* </ul>
*/
private void nonJavaResourcesChanged(Openable element, IResourceDelta delta) throws JavaModelException {
// reset non-java resources if element was open
if (element.isOpen()) {
JavaElementInfo info = (JavaElementInfo)element.getElementInfo();
switch (element.getElementType()) {
case IJavaElement.JAVA_MODEL :
((JavaModelInfo) info).nonJavaResources = null;
if (!ExternalFoldersManager.isInternalPathForExternalFolder(delta.getFullPath()))
currentDelta().addResourceDelta(delta);
return;
case IJavaElement.JAVA_PROJECT :
((JavaProjectElementInfo) info).setNonJavaResources(null);
// if a package fragment root is the project, clear it too
JavaProject project = (JavaProject) element;
PackageFragmentRoot projectRoot =
(PackageFragmentRoot) project.getPackageFragmentRoot(project.getProject());
if (projectRoot.isOpen()) {
((PackageFragmentRootInfo) projectRoot.getElementInfo()).setNonJavaResources(null);
}
break;
case IJavaElement.PACKAGE_FRAGMENT :
((PackageFragmentInfo) info).setNonJavaResources(null);
break;
case IJavaElement.PACKAGE_FRAGMENT_ROOT :
((PackageFragmentRootInfo) info).setNonJavaResources(null);
}
}
JavaElementDelta current = currentDelta();
JavaElementDelta elementDelta = current.find(element);
if (elementDelta == null) {
// don't use find after creating the delta as it can be null (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=63434)
elementDelta = current.changed(element, IJavaElementDelta.F_CONTENT);
}
if (!ExternalFoldersManager.isInternalPathForExternalFolder(delta.getFullPath()))
elementDelta.addResourceDelta(delta);
}
/*
* Returns the old root info for the given path and project.
*/
private RootInfo oldRootInfo(IPath path, JavaProject project) {
RootInfo oldInfo = (RootInfo) this.state.oldRoots.get(path);
if (oldInfo == null)
return null;
if (oldInfo.project.equals(project))
return oldInfo;
ArrayList oldInfos = (ArrayList) this.state.oldOtherRoots.get(path);
if (oldInfos == null)
return null;
for (int i = 0, length = oldInfos.size(); i < length; i++) {
oldInfo = (RootInfo) oldInfos.get(i);
if (oldInfo.project.equals(project))
return oldInfo;
}
return null;
}
/*
* Returns the other root infos for the given path. Look in the old other roots table if kind is REMOVED.
*/
private ArrayList otherRootsInfo(IPath path, int kind) {
if (kind == IResourceDelta.REMOVED) {
return (ArrayList)this.state.oldOtherRoots.get(path);
}
return (ArrayList)this.state.otherRoots.get(path);
}
private OutputsInfo outputsInfo(RootInfo rootInfo, IResource res) {
try {
JavaProject proj =
rootInfo == null ?
(JavaProject)createElement(res.getProject(), IJavaElement.JAVA_PROJECT, null) :
rootInfo.project;
if (proj != null) {
IPath projectOutput = proj.getOutputLocation();
int traverseMode = IGNORE;
if (proj.getProject().getFullPath().equals(projectOutput)){ // case of proj==bin==src
return new OutputsInfo(new IPath[] {projectOutput}, new int[] {SOURCE}, 1);
}
IClasspathEntry[] classpath = proj.getResolvedClasspath();
IPath[] outputs = new IPath[classpath.length+1];
int[] traverseModes = new int[classpath.length+1];
int outputCount = 1;
outputs[0] = projectOutput;
traverseModes[0] = traverseMode;
for (int i = 0, length = classpath.length; i < length; i++) {
IClasspathEntry entry = classpath[i];
IPath entryPath = entry.getPath();
IPath output = entry.getOutputLocation();
if (output != null) {
outputs[outputCount] = output;
// check case of src==bin
if (entryPath.equals(output)) {
traverseModes[outputCount++] = (entry.getEntryKind() == IClasspathEntry.CPE_SOURCE) ? SOURCE : BINARY;
} else {
traverseModes[outputCount++] = IGNORE;
}
}
// check case of src==bin
if (entryPath.equals(projectOutput)) {
traverseModes[0] = (entry.getEntryKind() == IClasspathEntry.CPE_SOURCE) ? SOURCE : BINARY;
}
}
return new OutputsInfo(outputs, traverseModes, outputCount);
}
} catch (JavaModelException e) {
// java project doesn't exist: ignore
}
return null;
}
private void popUntilPrefixOf(IPath path) {
while (this.currentElement != null) {
IPath currentElementPath = null;
if (this.currentElement instanceof IPackageFragmentRoot) {
currentElementPath = ((IPackageFragmentRoot)this.currentElement).getPath();
} else {
IResource currentElementResource = this.currentElement.resource();
if (currentElementResource != null) {
currentElementPath = currentElementResource.getFullPath();
}
}
if (currentElementPath != null) {
if (this.currentElement instanceof IPackageFragment
&& ((IPackageFragment) this.currentElement).isDefaultPackage()
&& currentElementPath.segmentCount() != path.segmentCount()-1) {
// default package and path is not a direct child
this.currentElement = (Openable)this.currentElement.getParent();
}
if (currentElementPath.isPrefixOf(path)) {
return;
}
}
this.currentElement = (Openable)this.currentElement.getParent();
}
}
/*
* Converts a <code>IResourceDelta</code> rooted in a <code>Workspace</code> into
* the corresponding set of <code>IJavaElementDelta</code>, rooted in the
* relevant <code>JavaModel</code>s.
*/
private IJavaElementDelta processResourceDelta(IResourceDelta changes) {
try {
IJavaModel model = this.manager.getJavaModel();
if (!model.isOpen()) {
// force opening of java model so that java element delta are reported
try {
model.open(null);
} catch (JavaModelException e) {
if (VERBOSE) {
e.printStackTrace();
}
return null;
}
}
this.state.initializeRoots(false/*not initiAfterLoad*/);
this.currentElement = null;
// get the workspace delta, and start processing there.
IResourceDelta[] deltas = changes.getAffectedChildren(IResourceDelta.ADDED | IResourceDelta.REMOVED | IResourceDelta.CHANGED, IContainer.INCLUDE_HIDDEN);
for (int i = 0; i < deltas.length; i++) {
IResourceDelta delta = deltas[i];
IResource res = delta.getResource();
// find out the element type
RootInfo rootInfo = null;
int elementType;
IProject proj = (IProject)res;
boolean wasJavaProject = this.state.findJavaProject(proj.getName()) != null;
boolean isJavaProject = JavaProject.hasJavaNature(proj);
if (!wasJavaProject && !isJavaProject) {
elementType = NON_JAVA_RESOURCE;
} else {
IPath rootPath = externalPath(res);
rootInfo = enclosingRootInfo(rootPath, delta.getKind());
if (rootInfo != null && rootInfo.isRootOfProject(rootPath)) {
elementType = IJavaElement.PACKAGE_FRAGMENT_ROOT;
} else {
elementType = IJavaElement.JAVA_PROJECT;
}
}
// traverse delta
traverseDelta(delta, elementType, rootInfo, null);
if (elementType == NON_JAVA_RESOURCE
|| (wasJavaProject != isJavaProject && (delta.getKind()) == IResourceDelta.CHANGED)) { // project has changed nature (description or open/closed)
try {
// add child as non java resource
nonJavaResourcesChanged((JavaModel)model, delta);
} catch (JavaModelException e) {
// java model could not be opened
}
}
}
resetProjectCaches();
return this.currentDelta;
} finally {
this.currentDelta = null;
}
}
/*
* Traverse the set of projects which have changed namespace, and reset their
* caches and their dependents
*/
public void resetProjectCaches() {
if (this.projectCachesToReset.size() == 0)
return;
JavaModelManager.getJavaModelManager().resetJarTypeCache();
Iterator iterator = this.projectCachesToReset.iterator();
HashMap projectDepencies = this.state.projectDependencies;
HashSet affectedDependents = new HashSet();
while (iterator.hasNext()) {
JavaProject project = (JavaProject)iterator.next();
project.resetCaches();
addDependentProjects(project, projectDepencies, affectedDependents);
}
// reset caches of dependent projects
iterator = affectedDependents.iterator();
while (iterator.hasNext()) {
JavaProject project = (JavaProject) iterator.next();
project.resetCaches();
}
this.projectCachesToReset.clear();
}
/*
* Registers the given delta with this delta processor.
*/
public void registerJavaModelDelta(IJavaElementDelta delta) {
this.javaModelDeltas.add(delta);
}
/*
* Removes the given element from its parents cache of children. If the
* element does not have a parent, or the parent is not currently open,
* this has no effect.
*/
private void removeFromParentInfo(Openable child) {
Openable parent = (Openable) child.getParent();
if (parent != null && parent.isOpen()) {
try {
OpenableElementInfo info = (OpenableElementInfo) parent.getElementInfo();
info.removeChild(child);
} catch (JavaModelException e) {
// do nothing - we already checked if open
}
}
}
/*
* Notification that some resource changes have happened
* on the platform, and that the Java Model should update any required
* internal structures such that its elements remain consistent.
* Translates <code>IResourceDeltas</code> into <code>IJavaElementDeltas</code>.
*
* @see IResourceDelta
* @see IResource
*/
public void resourceChanged(IResourceChangeEvent event) {
int eventType = this.overridenEventType == -1 ? event.getType() : this.overridenEventType;
IResource resource = event.getResource();
IResourceDelta delta = event.getDelta();
switch(eventType){
case IResourceChangeEvent.PRE_DELETE :
try {
if(resource.getType() == IResource.PROJECT
&& ((IProject) resource).hasNature(JavaCore.NATURE_ID)) {
deleting((IProject)resource);
}
} catch(CoreException e){
// project doesn't exist or is not open: ignore
}
return;
case IResourceChangeEvent.PRE_REFRESH:
IProject [] projects = null;
Object o = event.getSource();
if (o instanceof IProject) {
projects = new IProject[] { (IProject) o };
} else if (o instanceof IWorkspace) {
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=261594. The single workspace refresh
// notification we see, implies that all projects are about to be refreshed.
projects = ((IWorkspace) o).getRoot().getProjects(IContainer.INCLUDE_HIDDEN);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=302295
// Refresh all project references together in a single job
JavaModelManager.getExternalManager().refreshReferences(projects, null);
IJavaProject[] javaElements = new IJavaProject[projects.length];
for (int index = 0; index < projects.length; index++) {
javaElements[index] = JavaCore.create(projects[index]);
}
try {
checkExternalArchiveChanges(javaElements, true, null);
} catch (JavaModelException e) {
if (!e.isDoesNotExist())
Util.log(e, "Exception while updating external archives"); //$NON-NLS-1$
}
return;
case IResourceChangeEvent.POST_CHANGE :
HashSet elementsToRefresh = this.state.removeExternalElementsToRefresh();
if (isAffectedBy(delta) // avoid populating for SYNC or MARKER deltas
|| elementsToRefresh != null) {
try {
try {
stopDeltas();
checkProjectsAndClasspathChanges(delta);
// generate external archive change deltas
if (elementsToRefresh != null) {
createExternalArchiveDelta(elementsToRefresh, null);
}
// generate classpath change deltas
HashMap classpathChanges = this.state.removeAllClasspathChanges();
if (classpathChanges.size() > 0) {
boolean hasDelta = this.currentDelta != null;
JavaElementDelta javaDelta = currentDelta();
Iterator changes = classpathChanges.values().iterator();
while (changes.hasNext()) {
ClasspathChange change = (ClasspathChange) changes.next();
int result = change.generateDelta(javaDelta, false/*don't add classpath change*/);
if ((result & ClasspathChange.HAS_DELTA) != 0) {
hasDelta = true;
// need to recompute root infos
this.state.rootsAreStale = true;
change.requestIndexing();
this.state.addClasspathValidation(change.project);
}
if ((result & ClasspathChange.HAS_PROJECT_CHANGE) != 0) {
this.state.addProjectReferenceChange(change.project, change.oldResolvedClasspath);
}
if ((result & ClasspathChange.HAS_LIBRARY_CHANGE) != 0) {
this.state.addExternalFolderChange(change.project, change.oldResolvedClasspath);
}
}
// process late coming external elements to refresh (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=212769 )
elementsToRefresh = this.state.removeExternalElementsToRefresh();
if (elementsToRefresh != null) {
hasDelta |= createExternalArchiveDelta(elementsToRefresh, null);
}
if (!hasDelta)
this.currentDelta = null;
}
// generate Java deltas from resource changes
IJavaElementDelta translatedDelta = processResourceDelta(delta);
if (translatedDelta != null) {
registerJavaModelDelta(translatedDelta);
}
} finally {
this.sourceElementParserCache = null; // don't hold onto parser longer than necessary
startDeltas();
}
IElementChangedListener[] listeners;
int listenerCount;
synchronized (this.state) {
listeners = this.state.elementChangedListeners;
listenerCount = this.state.elementChangedListenerCount;
}
notifyTypeHierarchies(listeners, listenerCount);
fire(null, ElementChangedEvent.POST_CHANGE);
} finally {
// workaround for bug 15168 circular errors not reported
this.state.resetOldJavaProjectNames();
this.oldRoots = null;
}
}
return;
case IResourceChangeEvent.PRE_BUILD :
// force initialization of roots before builders run to avoid deadlock in another thread
// (note this is no-op if already initialized)
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=241751
this.state.initializeRoots(false/*not initiAfterLoad*/);
boolean isAffected = isAffectedBy(delta);
boolean needCycleValidation = isAffected && validateClasspaths(delta);
// update external folders if necessary
ExternalFolderChange[] folderChanges = this.state.removeExternalFolderChanges();
if (folderChanges != null) {
for (int i = 0, length = folderChanges.length; i < length; i++) {
try {
folderChanges[i].updateExternalFoldersIfNecessary(false/*do not refresh since we are not in the thread that added the external folder to the classpath*/, null);
} catch (JavaModelException e) {
if (!e.isDoesNotExist())
Util.log(e, "Exception while updating external folders"); //$NON-NLS-1$
}
}
}
// create classpath markers if necessary
ClasspathValidation[] validations = this.state.removeClasspathValidations();
if (validations != null) {
for (int i = 0, length = validations.length; i < length; i++) {
ClasspathValidation validation = validations[i];
validation.validate();
}
}
// update project references if necessary
ProjectReferenceChange[] projectRefChanges = this.state.removeProjectReferenceChanges();
if (projectRefChanges != null) {
for (int i = 0, length = projectRefChanges.length; i < length; i++) {
try {
projectRefChanges[i].updateProjectReferencesIfNecessary();
} catch(JavaModelException e) {
// project doesn't exist any longer, continue with next one
if (!e.isDoesNotExist())
Util.log(e, "Exception while updating project references"); //$NON-NLS-1$
}
}
}
if (needCycleValidation || projectRefChanges != null) {
// update all cycle markers since the project references changes may have affected cycles
try {
JavaProject.validateCycles(null);
} catch (JavaModelException e) {
// a project no longer exists
}
}
if (isAffected) {
JavaModel.flushExternalFileCache();
JavaBuilder.buildStarting();
}
// does not fire any deltas
return;
case IResourceChangeEvent.POST_BUILD :
JavaBuilder.buildFinished();
return;
}
}
/*
* Returns the root info for the given path. Look in the old roots table if kind is REMOVED.
*/
private RootInfo rootInfo(IPath path, int kind) {
if (kind == IResourceDelta.REMOVED) {
return (RootInfo)this.state.oldRoots.get(path);
}
return (RootInfo)this.state.roots.get(path);
}
/*
* Turns the firing mode to on. That is, deltas that are/have been
* registered will be fired.
*/
private void startDeltas() {
this.isFiring= true;
}
/*
* Turns the firing mode to off. That is, deltas that are/have been
* registered will not be fired until deltas are started again.
*/
private void stopDeltas() {
this.isFiring= false;
}
/*
* Converts an <code>IResourceDelta</code> and its children into
* the corresponding <code>IJavaElementDelta</code>s.
*/
private void traverseDelta(
IResourceDelta delta,
int elementType,
RootInfo rootInfo,
OutputsInfo outputsInfo) {
IResource res = delta.getResource();
// set stack of elements
if (this.currentElement == null && rootInfo != null) {
this.currentElement = rootInfo.project;
}
// process current delta
boolean processChildren = true;
if (res instanceof IProject) {
// reset source element parser cache
this.sourceElementParserCache = null;
processChildren =
updateCurrentDeltaAndIndex(
delta,
elementType == IJavaElement.PACKAGE_FRAGMENT_ROOT ?
IJavaElement.JAVA_PROJECT : // case of prj=src
elementType,
rootInfo);
} else if (rootInfo != null) {
processChildren = updateCurrentDeltaAndIndex(delta, elementType, rootInfo);
} else {
// not yet inside a package fragment root
processChildren = true;
}
// get the project's output locations and traverse mode
if (outputsInfo == null) outputsInfo = outputsInfo(rootInfo, res);
// process children if needed
if (processChildren) {
IResourceDelta[] children = delta.getAffectedChildren();
boolean oneChildOnClasspath = false;
int length = children.length;
IResourceDelta[] orphanChildren = null;
Openable parent = null;
boolean isValidParent = true;
for (int i = 0; i < length; i++) {
IResourceDelta child = children[i];
IResource childRes = child.getResource();
// check source attachment change
checkSourceAttachmentChange(child, childRes);
// find out whether the child is a package fragment root of the current project
IPath childPath = externalPath(childRes);
int childKind = child.getKind();
RootInfo childRootInfo = rootInfo(childPath, childKind);
RootInfo originalChildRootInfo = childRootInfo;
if (childRootInfo != null && !childRootInfo.isRootOfProject(childPath)) {
// package fragment root of another project (dealt with later)
childRootInfo = null;
}
// compute child type
int childType =
elementType(
childRes,
childKind,
elementType,
rootInfo == null ? childRootInfo : rootInfo
);
// is childRes in the output folder and is it filtered out ?
boolean isResFilteredFromOutput = isResFilteredFromOutput(rootInfo, outputsInfo, childRes, childType);
boolean isNestedRoot = rootInfo != null && childRootInfo != null;
if (!isResFilteredFromOutput
&& !isNestedRoot) { // do not treat as non-java rsc if nested root
traverseDelta(child, childType, rootInfo == null ? childRootInfo : rootInfo, outputsInfo); // traverse delta for child in the same project
if (childType == NON_JAVA_RESOURCE) {
if (rootInfo != null) { // if inside a package fragment root
if (!isValidParent) continue;
if (parent == null) {
// find the parent of the non-java resource to attach to
if (this.currentElement == null
|| !rootInfo.project.equals(this.currentElement.getJavaProject())) { // note if currentElement is the IJavaModel, getJavaProject() is null
// force the currentProject to be used
this.currentElement = rootInfo.project;
}
if (elementType == IJavaElement.JAVA_PROJECT
|| (elementType == IJavaElement.PACKAGE_FRAGMENT_ROOT
&& res instanceof IProject)) {
// NB: attach non-java resource to project (not to its package fragment root)
parent = rootInfo.project;
} else {
parent = createElement(res, elementType, rootInfo);
}
if (parent == null) {
isValidParent = false;
continue;
}
}
// add child as non java resource
try {
nonJavaResourcesChanged(parent, child);
} catch (JavaModelException e) {
// ignore
}
} else {
// the non-java resource (or its parent folder) will be attached to the java project
if (orphanChildren == null) orphanChildren = new IResourceDelta[length];
orphanChildren[i] = child;
}
} else {
if (rootInfo == null && childRootInfo == null) {
// the non-java resource (or its parent folder) will be attached to the java project
if (orphanChildren == null) orphanChildren = new IResourceDelta[length];
orphanChildren[i] = child;
}
}
} else {
oneChildOnClasspath = true; // to avoid reporting child delta as non-java resource delta
}
// if child is a nested root
// or if it is not a package fragment root of the current project
// but it is a package fragment root of another project, traverse delta too
if (isNestedRoot
|| (childRootInfo == null && originalChildRootInfo != null)) {
traverseDelta(child, IJavaElement.PACKAGE_FRAGMENT_ROOT, originalChildRootInfo, null); // binary output of childRootInfo.project cannot be this root
}
// if the child is a package fragment root of one or several other projects
ArrayList rootList;
if ((rootList = otherRootsInfo(childPath, childKind)) != null) {
Iterator iterator = rootList.iterator();
while (iterator.hasNext()) {
originalChildRootInfo = (RootInfo) iterator.next();
this.currentElement = null; // ensure that 2 roots refering to the same resource don't share the current element (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=210746 )
traverseDelta(child, IJavaElement.PACKAGE_FRAGMENT_ROOT, originalChildRootInfo, null); // binary output of childRootInfo.project cannot be this root
}
}
}
if (orphanChildren != null
&& (oneChildOnClasspath // orphan children are siblings of a package fragment root
|| res instanceof IProject)) { // non-java resource directly under a project
// attach orphan children
IProject rscProject = res.getProject();
JavaProject adoptiveProject = (JavaProject)JavaCore.create(rscProject);
if (adoptiveProject != null
&& JavaProject.hasJavaNature(rscProject)) { // delta iff Java project (18698)
for (int i = 0; i < length; i++) {
if (orphanChildren[i] != null) {
try {
nonJavaResourcesChanged(adoptiveProject, orphanChildren[i]);
} catch (JavaModelException e) {
// ignore
}
}
}
}
} // else resource delta will be added by parent
} // else resource delta will be added by parent
}
private void validateClasspaths(IResourceDelta delta, HashSet affectedProjects) {
IResource resource = delta.getResource();
boolean processChildren = false;
switch (resource.getType()) {
case IResource.ROOT :
if (delta.getKind() == IResourceDelta.CHANGED) {
processChildren = true;
}
break;
case IResource.PROJECT :
IProject project = (IProject)resource;
int kind = delta.getKind();
boolean isJavaProject = JavaProject.hasJavaNature(project);
switch (kind) {
case IResourceDelta.ADDED:
processChildren = isJavaProject;
affectedProjects.add(project.getFullPath());
break;
case IResourceDelta.CHANGED:
processChildren = isJavaProject;
if ((delta.getFlags() & IResourceDelta.OPEN) != 0) {
// project opened or closed
if (isJavaProject) {
JavaProject javaProject = (JavaProject)JavaCore.create(project);
this.state.addClasspathValidation(javaProject); // in case .classpath got modified while closed
}
affectedProjects.add(project.getFullPath());
} else if ((delta.getFlags() & IResourceDelta.DESCRIPTION) != 0) {
boolean wasJavaProject = this.state.findJavaProject(project.getName()) != null;
if (wasJavaProject != isJavaProject) {
// project gained or lost Java nature
JavaProject javaProject = (JavaProject)JavaCore.create(project);
this.state.addClasspathValidation(javaProject); // add/remove classpath markers
affectedProjects.add(project.getFullPath());
}
}
break;
case IResourceDelta.REMOVED:
affectedProjects.add(project.getFullPath());
break;
}
break;
case IResource.FILE :
/* check classpath or prefs files change */
IFile file = (IFile) resource;
String fileName = file.getName();
RootInfo rootInfo = null;
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=229042
// Mark a validation if a library with package fragment root in the project has changed
if (fileName.equals(JavaProject.CLASSPATH_FILENAME)
|| ((rootInfo = rootInfo(file.getFullPath(), delta.getKind())) != null && rootInfo.entryKind == IClasspathEntry.CPE_LIBRARY)) {
JavaProject javaProject = (JavaProject)JavaCore.create(file.getProject());
this.state.addClasspathValidation(javaProject);
affectedProjects.add(file.getProject().getFullPath());
}
break;
}
if (processChildren) {
IResourceDelta[] children = delta.getAffectedChildren();
for (int i = 0; i < children.length; i++) {
validateClasspaths(children[i], affectedProjects);
}
}
}
/*
* Validate the classpaths of the projects affected by the given delta.
* Create markers if necessary.
* Returns whether cycle markers should be recomputed.
*/
private boolean validateClasspaths(IResourceDelta delta) {
HashSet affectedProjects = new HashSet(5);
validateClasspaths(delta, affectedProjects);
boolean needCycleValidation = false;
// validate classpaths of affected projects (dependent projects
// or projects that reference a library in one of the projects that have changed)
if (!affectedProjects.isEmpty()) {
IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
IProject[] projects = workspaceRoot.getProjects();
int length = projects.length;
for (int i = 0; i < length; i++){
IProject project = projects[i];
JavaProject javaProject = (JavaProject)JavaCore.create(project);
try {
IPath projectPath = project.getFullPath();
IClasspathEntry[] classpath = javaProject.getResolvedClasspath(); // allowed to reuse model cache
for (int j = 0, cpLength = classpath.length; j < cpLength; j++) {
IClasspathEntry entry = classpath[j];
switch (entry.getEntryKind()) {
case IClasspathEntry.CPE_PROJECT:
if (affectedProjects.contains(entry.getPath())) {
this.state.addClasspathValidation(javaProject);
needCycleValidation = true;
}
break;
case IClasspathEntry.CPE_LIBRARY:
IPath entryPath = entry.getPath();
IPath libProjectPath = entryPath.removeLastSegments(entryPath.segmentCount()-1);
if (!libProjectPath.equals(projectPath) // if library contained in another project
&& affectedProjects.contains(libProjectPath)) {
this.state.addClasspathValidation(javaProject);
}
break;
}
}
} catch(JavaModelException e) {
// project no longer exists
}
}
}
return needCycleValidation;
}
/*
* Update the current delta (i.e. add/remove/change the given element) and update the correponding index.
* Returns whether the children of the given delta must be processed.
* @throws a JavaModelException if the delta doesn't correspond to a java element of the given type.
*/
public boolean updateCurrentDeltaAndIndex(IResourceDelta delta, int elementType, RootInfo rootInfo) {
Openable element;
switch (delta.getKind()) {
case IResourceDelta.ADDED :
IResource deltaRes = delta.getResource();
element = createElement(deltaRes, elementType, rootInfo);
if (element == null) {
// resource might be containing shared roots (see bug 19058)
this.state.updateRoots(deltaRes.getFullPath(), delta, this);
return rootInfo != null && rootInfo.inclusionPatterns != null;
}
updateIndex(element, delta);
elementAdded(element, delta, rootInfo);
if (elementType == IJavaElement.PACKAGE_FRAGMENT_ROOT)
this.state.addClasspathValidation(rootInfo.project);
return elementType == IJavaElement.PACKAGE_FRAGMENT;
case IResourceDelta.REMOVED :
deltaRes = delta.getResource();
element = createElement(deltaRes, elementType, rootInfo);
if (element == null) {
// resource might be containing shared roots (see bug 19058)
this.state.updateRoots(deltaRes.getFullPath(), delta, this);
return rootInfo != null && rootInfo.inclusionPatterns != null;
}
updateIndex(element, delta);
elementRemoved(element, delta, rootInfo);
if (elementType == IJavaElement.PACKAGE_FRAGMENT_ROOT)
this.state.addClasspathValidation(rootInfo.project);
if (deltaRes.getType() == IResource.PROJECT){
// reset the corresponding project built state, since cannot reuse if added back
if (JavaBuilder.DEBUG)
System.out.println("Clearing last state for removed project : " + deltaRes); //$NON-NLS-1$
this.manager.setLastBuiltState((IProject)deltaRes, null /*no state*/);
// clean up previous session containers (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=89850)
this.manager.previousSessionContainers.remove(element);
}
return elementType == IJavaElement.PACKAGE_FRAGMENT;
case IResourceDelta.CHANGED :
int flags = delta.getFlags();
if (elementType == IJavaElement.PACKAGE_FRAGMENT_ROOT && (flags & IResourceDelta.LOCAL_CHANGED) != 0) {
// external folder added or removed
if (oldRootInfo(rootInfo.rootPath, rootInfo.project) == null) {
// root just added to the classpath
break;
}
deltaRes = delta.getResource();
Object target = JavaModel.getExternalTarget(deltaRes.getLocation(), true/*check resource existence*/);
element = createElement(deltaRes, elementType, rootInfo);
updateIndex(element, delta);
if (target != null) {
// external folder added
elementAdded(element, delta, rootInfo);
} else {
// external folder removed
elementRemoved(element, delta, rootInfo);
}
this.state.addClasspathValidation(rootInfo.project);
} else if ((flags & IResourceDelta.CONTENT) != 0 || (flags & IResourceDelta.ENCODING) != 0) {
// content or encoding has changed
element = createElement(delta.getResource(), elementType, rootInfo);
if (element == null) return false;
updateIndex(element, delta);
contentChanged(element);
} else if (elementType == IJavaElement.JAVA_PROJECT) {
if ((flags & IResourceDelta.OPEN) != 0) {
// project has been opened or closed
IProject res = (IProject)delta.getResource();
element = createElement(res, elementType, rootInfo);
if (element == null) {
// resource might be containing shared roots (see bug 19058)
this.state.updateRoots(res.getFullPath(), delta, this);
return false;
}
if (res.isOpen()) {
if (JavaProject.hasJavaNature(res)) {
addToParentInfo(element);
currentDelta().opened(element);
this.state.updateRoots(element.getPath(), delta, this);
// remember that the project's cache must be reset
this.projectCachesToReset.add(element);
this.manager.indexManager.indexAll(res);
}
} else {
boolean wasJavaProject = this.state.findJavaProject(res.getName()) != null;
if (wasJavaProject) {
close(element);
removeFromParentInfo(element);
currentDelta().closed(element);
this.manager.indexManager.discardJobs(element.getElementName());
this.manager.indexManager.removeIndexFamily(res.getFullPath());
}
}
return false; // when a project is open/closed don't process children
}
if ((flags & IResourceDelta.DESCRIPTION) != 0) {
IProject res = (IProject)delta.getResource();
boolean wasJavaProject = this.state.findJavaProject(res.getName()) != null;
boolean isJavaProject = JavaProject.hasJavaNature(res);
if (wasJavaProject != isJavaProject) {
// project's nature has been added or removed
element = createElement(res, elementType, rootInfo);
if (element == null) return false; // note its resources are still visible as roots to other projects
if (isJavaProject) {
elementAdded(element, delta, rootInfo);
this.manager.indexManager.indexAll(res);
} else {
elementRemoved(element, delta, rootInfo);
this.manager.indexManager.discardJobs(element.getElementName());
this.manager.indexManager.removeIndexFamily(res.getFullPath());
// reset the corresponding project built state, since cannot reuse if added back
if (JavaBuilder.DEBUG)
System.out.println("Clearing last state for project loosing Java nature: " + res); //$NON-NLS-1$
this.manager.setLastBuiltState(res, null /*no state*/);
}
return false; // when a project's nature is added/removed don't process children
}
}
}
return true;
}
return true;
}
private void updateIndex(Openable element, IResourceDelta delta) {
IndexManager indexManager = this.manager.indexManager;
if (indexManager == null)
return;
switch (element.getElementType()) {
case IJavaElement.JAVA_PROJECT :
switch (delta.getKind()) {
case IResourceDelta.ADDED :
indexManager.indexAll(element.getJavaProject().getProject());
break;
case IResourceDelta.REMOVED :
indexManager.removeIndexFamily(element.getJavaProject().getProject().getFullPath());
// NB: Discarding index jobs belonging to this project was done during PRE_DELETE
break;
// NB: Update of index if project is opened, closed, or its java nature is added or removed
// is done in updateCurrentDeltaAndIndex
}
break;
case IJavaElement.PACKAGE_FRAGMENT_ROOT :
if (element instanceof JarPackageFragmentRoot) {
JarPackageFragmentRoot root = (JarPackageFragmentRoot)element;
// index jar file only once (if the root is in its declaring project)
IPath jarPath = root.getPath();
switch (delta.getKind()) {
case IResourceDelta.ADDED:
// index the new jar
indexManager.indexLibrary(jarPath, root.getJavaProject().getProject());
break;
case IResourceDelta.CHANGED:
// first remove the index so that it is forced to be re-indexed
indexManager.removeIndex(jarPath);
// then index the jar
indexManager.indexLibrary(jarPath, root.getJavaProject().getProject());
break;
case IResourceDelta.REMOVED:
// the jar was physically removed: remove the index
indexManager.discardJobs(jarPath.toString());
indexManager.removeIndex(jarPath);
break;
}
break;
}
int kind = delta.getKind();
if (kind == IResourceDelta.ADDED || kind == IResourceDelta.REMOVED || (kind == IResourceDelta.CHANGED && (delta.getFlags() & IResourceDelta.LOCAL_CHANGED) != 0)) {
PackageFragmentRoot root = (PackageFragmentRoot)element;
updateRootIndex(root, CharOperation.NO_STRINGS, delta);
break;
}
// don't break as packages of the package fragment root can be indexed below
// $FALL-THROUGH$
case IJavaElement.PACKAGE_FRAGMENT :
switch (delta.getKind()) {
case IResourceDelta.CHANGED:
if ((delta.getFlags() & IResourceDelta.LOCAL_CHANGED) == 0)
break;
// $FALL-THROUGH$
case IResourceDelta.ADDED:
case IResourceDelta.REMOVED:
IPackageFragment pkg = null;
if (element instanceof IPackageFragmentRoot) {
PackageFragmentRoot root = (PackageFragmentRoot)element;
pkg = root.getPackageFragment(CharOperation.NO_STRINGS);
} else {
pkg = (IPackageFragment)element;
}
RootInfo rootInfo = rootInfo(pkg.getParent().getPath(), delta.getKind());
boolean isSource =
rootInfo == null // if null, defaults to source
|| rootInfo.entryKind == IClasspathEntry.CPE_SOURCE;
IResourceDelta[] children = delta.getAffectedChildren();
for (int i = 0, length = children.length; i < length; i++) {
IResourceDelta child = children[i];
IResource resource = child.getResource();
// TODO (philippe) Why do this? Every child is added anyway as the delta is walked
if (resource instanceof IFile) {
String name = resource.getName();
if (isSource) {
if (org.eclipse.jdt.internal.core.util.Util.isJavaLikeFileName(name)) {
Openable cu = (Openable)pkg.getCompilationUnit(name);
updateIndex(cu, child);
}
} else if (org.eclipse.jdt.internal.compiler.util.Util.isClassFileName(name)) {
Openable classFile = (Openable)pkg.getClassFile(name);
updateIndex(classFile, child);
}
}
}
break;
}
break;
case IJavaElement.CLASS_FILE :
IFile file = (IFile) delta.getResource();
IJavaProject project = element.getJavaProject();
PackageFragmentRoot root = element.getPackageFragmentRoot();
IPath binaryFolderPath = root.isExternal() && !root.isArchive() ? root.resource().getFullPath() : root.getPath();
// if the class file is part of the binary output, it has been created by
// the java builder -> ignore
try {
if (binaryFolderPath.equals(project.getOutputLocation())) {
break;
}
} catch (JavaModelException e) {
// project doesn't exist: ignore
}
switch (delta.getKind()) {
case IResourceDelta.CHANGED :
// no need to index if the content has not changed
int flags = delta.getFlags();
if ((flags & IResourceDelta.CONTENT) == 0 && (flags & IResourceDelta.ENCODING) == 0)
break;
// $FALL-THROUGH$
case IResourceDelta.ADDED :
indexManager.addBinary(file, binaryFolderPath);
break;
case IResourceDelta.REMOVED :
String containerRelativePath = Util.relativePath(file.getFullPath(), binaryFolderPath.segmentCount());
indexManager.remove(containerRelativePath, binaryFolderPath);
break;
}
break;
case IJavaElement.COMPILATION_UNIT :
file = (IFile) delta.getResource();
switch (delta.getKind()) {
case IResourceDelta.CHANGED :
// no need to index if the content has not changed
int flags = delta.getFlags();
if ((flags & IResourceDelta.CONTENT) == 0 && (flags & IResourceDelta.ENCODING) == 0)
break;
// $FALL-THROUGH$
case IResourceDelta.ADDED :
indexManager.addSource(file, file.getProject().getFullPath(), getSourceElementParser(element));
// Clean file from secondary types cache but do not update indexing secondary type cache as it will be updated through indexing itself
this.manager.secondaryTypesRemoving(file, false);
break;
case IResourceDelta.REMOVED :
indexManager.remove(Util.relativePath(file.getFullPath(), 1/*remove project segment*/), file.getProject().getFullPath());
// Clean file from secondary types cache and update indexing secondary type cache as indexing cannot remove secondary types from cache
this.manager.secondaryTypesRemoving(file, true);
break;
}
}
}
/*
* Update Java Model given some delta
*/
public void updateJavaModel(IJavaElementDelta customDelta) {
if (customDelta == null){
for (int i = 0, length = this.javaModelDeltas.size(); i < length; i++){
IJavaElementDelta delta = (IJavaElementDelta)this.javaModelDeltas.get(i);
this.modelUpdater.processJavaDelta(delta);
}
} else {
this.modelUpdater.processJavaDelta(customDelta);
}
}
/*
* Updates the index of the given root (assuming it's an addition or a removal).
* This is done recusively, pkg being the current package.
*/
private void updateRootIndex(PackageFragmentRoot root, String[] pkgName, IResourceDelta delta) {
Openable pkg = root.getPackageFragment(pkgName);
updateIndex(pkg, delta);
IResourceDelta[] children = delta.getAffectedChildren();
for (int i = 0, length = children.length; i < length; i++) {
IResourceDelta child = children[i];
IResource resource = child.getResource();
if (resource instanceof IFolder) {
String[] subpkgName = Util.arrayConcat(pkgName, resource.getName());
updateRootIndex(root, subpkgName, child);
}
}
}
}