/*******************************************************************************
* Copyright (c) 2004, 2015 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.launching.sourcelookup.containers;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.debug.core.sourcelookup.ISourceContainer;
import org.eclipse.debug.core.sourcelookup.ISourceContainerType;
import org.eclipse.debug.core.sourcelookup.containers.CompositeSourceContainer;
import org.eclipse.debug.core.sourcelookup.containers.FolderSourceContainer;
import org.eclipse.debug.core.sourcelookup.containers.ProjectSourceContainer;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.internal.launching.LaunchingPlugin;
/**
* Java project source container. Searches for source in a project's
* source folders.
* <p>
* This class may be instantiated.
* </p>
*
* @since 3.0
* @noextend This class is not intended to be sub-classed by clients.
*/
public class JavaProjectSourceContainer extends CompositeSourceContainer {
// Java project
private IJavaProject fProject;
// Source folders
private ISourceContainer[] fSourceFolders;
// Generic project container
private ISourceContainer[] fOthers;
private static String[] fgJavaExtensions = null;
/**
* initialize java file extensions
*/
static {
String[] extensions = JavaCore.getJavaLikeExtensions();
fgJavaExtensions = new String[extensions.length];
for (int i = 0; i < extensions.length; i++) {
String ext = extensions[i];
fgJavaExtensions[i] = '.' + ext;
}
}
/**
* Unique identifier for Java project source container type
* (value <code>org.eclipse.jdt.launching.sourceContainer.javaProject</code>).
*/
public static final String TYPE_ID = LaunchingPlugin.getUniqueIdentifier() + ".sourceContainer.javaProject"; //$NON-NLS-1$
/**
* Constructs a source container on the given Java project.
*
* @param project project to look for source in
*/
public JavaProjectSourceContainer(IJavaProject project) {
fProject = project;
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.core.sourcelookup.ISourceContainer#getName()
*/
@Override
public String getName() {
return fProject.getElementName();
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.core.sourcelookup.ISourceContainer#getType()
*/
@Override
public ISourceContainerType getType() {
return getSourceContainerType(TYPE_ID);
}
/**
* Returns the Java project associated with this source container.
*
* @return Java project
*/
public IJavaProject getJavaProject() {
return fProject;
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.core.sourcelookup.containers.CompositeSourceContainer#createSourceContainers()
*/
@Override
protected ISourceContainer[] createSourceContainers() throws CoreException {
List<ISourceContainer> containers = new ArrayList<>();
IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
if (fProject.getProject().isOpen()) {
IClasspathEntry[] entries = fProject.getRawClasspath();
for (int i = 0; i < entries.length; i++) {
IClasspathEntry entry = entries[i];
switch (entry.getEntryKind()) {
case IClasspathEntry.CPE_SOURCE:
IPath path = entry.getPath();
IResource resource = root.findMember(path);
if (resource instanceof IContainer) {
containers.add(new FolderSourceContainer((IContainer)resource, false));
}
break;
}
}
}
// cache the Java source folders to search for java like files in
fSourceFolders = containers.toArray(new ISourceContainer[containers.size()]);
ISourceContainer theProject = new ProjectSourceContainer(fProject.getProject(), false);
fOthers = new ISourceContainer[] {theProject};
containers.add(theProject);
return containers.toArray(new ISourceContainer[containers.size()]);
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (obj instanceof JavaProjectSourceContainer) {
return getJavaProject().equals(((JavaProjectSourceContainer)obj).getJavaProject());
}
return super.equals(obj);
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return getJavaProject().hashCode();
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.sourcelookup.ISourceContainer#findSourceElements(java.lang.String)
*/
@Override
public Object[] findSourceElements(String name) throws CoreException {
// force container initialization
getSourceContainers();
if (isJavaLikeFileName(name)) {
// only look in source folders
Object[] objects = findSourceElements(name, fSourceFolders);
List<Object> filtered = null;
for (int i = 0; i < objects.length; i++) {
Object object = objects[i];
if (object instanceof IResource) {
if (!getJavaProject().isOnClasspath((IResource)object)) {
if (filtered == null) {
filtered = new ArrayList<>(objects.length);
for (int j = 0; j < objects.length; j++) {
filtered.add(objects[j]);
}
}
filtered.remove(object);
}
}
}
if (filtered == null) {
return objects;
}
return filtered.toArray();
}
// look elsewhere if not a java like file
return findSourceElements(name, fOthers);
}
@Override
public void dispose() {
fSourceFolders = null;
fOthers = null;
super.dispose();
}
private boolean isJavaLikeFileName(String name) {
for (int i = 0; i < fgJavaExtensions.length; i++) {
String ext = fgJavaExtensions[i];
if (name.endsWith(ext)) {
return true;
}
}
return false;
}
}