/*******************************************************************************
* Copyright (c) 2000, 2009 QNX Software Systems 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:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.core.resources;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.cdt.core.AbstractCExtension;
import org.eclipse.cdt.core.model.CModelException;
import org.eclipse.cdt.core.model.CoreModel;
import org.eclipse.cdt.core.model.ElementChangedEvent;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.core.model.ICElementDelta;
import org.eclipse.cdt.core.model.IElementChangedListener;
import org.eclipse.cdt.core.model.IIncludeEntry;
import org.eclipse.cdt.core.model.IIncludeFileEntry;
import org.eclipse.cdt.core.model.IMacroEntry;
import org.eclipse.cdt.core.model.IMacroFileEntry;
import org.eclipse.cdt.core.parser.IScannerInfo;
import org.eclipse.cdt.core.parser.IScannerInfoChangeListener;
import org.eclipse.cdt.core.parser.IScannerInfoProvider;
import org.eclipse.cdt.internal.core.model.PathEntryManager;
import org.eclipse.cdt.internal.core.settings.model.ScannerInfoProviderProxy;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IPath;
/**
* Provides scanner information from {@link PathEntryManager}.
*
* @noextend This class is not intended to be subclassed by clients.
* @noinstantiate This class is not intended to be instantiated by clients.
*
* @deprecated Since CDT 4.0 replaced by {@link ScannerInfoProviderProxy}. Still
* used as a default for projects created by earlier CDT versions.
*/
@Deprecated
public class ScannerProvider extends AbstractCExtension implements IScannerInfoProvider, IElementChangedListener {
// Listeners interested in build model changes
private static Map<IProject, List<IScannerInfoChangeListener>> listeners;
private static ScannerProvider fProvider;
// Map of the cache scannerInfos
public static synchronized IScannerInfoProvider getInstance() {
if ( fProvider == null) {
fProvider = new ScannerProvider();
CoreModel.getDefault().addElementChangedListener(fProvider);
}
return fProvider;
}
/*
* @return
*/
private static Map<IProject, List<IScannerInfoChangeListener>> getListeners() {
if (listeners == null) {
listeners = new HashMap<IProject, List<IScannerInfoChangeListener>>();
}
return listeners;
}
/**
* @param project
* @param info
*/
protected static void notifyInfoListeners(IProject project, IScannerInfo info) {
// Call in the cavalry
List<?> listeners = getListeners().get(project);
if (listeners == null) {
return;
}
IScannerInfoChangeListener[] observers = new IScannerInfoChangeListener[listeners.size()];
listeners.toArray(observers);
for (IScannerInfoChangeListener observer : observers) {
observer.changeNotification(project, info);
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.cdt.core.parser.IScannerInfoProvider#getScannerInformation(org.eclipse.core.resources.IResource)
*/
public IScannerInfo getScannerInformation(IResource resource) {
IPath resPath = resource.getFullPath();
try {
// get the includes
IIncludeEntry[] includeEntries = CoreModel.getIncludeEntries(resPath);
int localCount = 0, systemCount = 0;
for (int i = 0; i < includeEntries.length; ++i) {
if (includeEntries[i].isSystemInclude()) {
++systemCount;
} else {
++localCount;
}
}
String[] localIncludes = new String[localCount];
String[] systemIncludes = new String[systemCount];
for (int i = 0, j = 0, k = 0; i < includeEntries.length; ++i) {
if (includeEntries[i].isSystemInclude()) {
systemIncludes[j++] = includeEntries[i].getFullIncludePath().toOSString();
} else {
localIncludes[k++] = includeEntries[i].getFullIncludePath().toOSString();
}
}
// get the includeFile
IIncludeFileEntry[] includeFileEntries = CoreModel.getIncludeFileEntries(resPath);
String[] includeFiles = new String[includeFileEntries.length];
for (int i = 0; i < includeFiles.length; ++i) {
includeFiles[i] = includeFileEntries[i].getFullIncludeFilePath().toOSString();
}
// get the macros
IMacroEntry[] macros = CoreModel.getMacroEntries(resPath);
Map<String, String> symbolMap = new HashMap<String, String>();
for (int i = 0; i < macros.length; ++i) {
symbolMap.put(macros[i].getMacroName(), macros[i].getMacroValue());
}
// get the macro files
IMacroFileEntry[] macroFileEntries = CoreModel.getMacroFileEntries(resPath);
String[] macroFiles = new String[macroFileEntries.length];
for (int i = 0; i < macroFiles.length; ++i) {
macroFiles[i] = macroFileEntries[i].getFullMacroFilePath().toOSString();
}
return new ScannerInfo(systemIncludes, localIncludes, includeFiles, symbolMap, macroFiles);
} catch (CModelException e) {
//
}
return new ScannerInfo(null, null, null, null, null);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.cdt.core.parser.IScannerInfoProvider#subscribe(org.eclipse.core.resources.IResource,
* org.eclipse.cdt.core.parser.IScannerInfoChangeListener)
*/
public synchronized void subscribe(IResource resource, IScannerInfoChangeListener listener) {
if (resource == null || listener == null) {
return;
}
IProject project = resource.getProject();
// Get listeners for this resource
Map<IProject, List<IScannerInfoChangeListener>> map = getListeners();
List<IScannerInfoChangeListener> list = map.get(project);
if (list == null) {
// Create a new list
list = new ArrayList<IScannerInfoChangeListener>();
map.put(project, list);
}
if (!list.contains(listener)) {
// Add the new listener for the resource
list.add(listener);
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.cdt.core.parser.IScannerInfoProvider#unsubscribe(org.eclipse.core.resources.IResource,
* org.eclipse.cdt.core.parser.IScannerInfoChangeListener)
*/
public synchronized void unsubscribe(IResource resource, IScannerInfoChangeListener listener) {
if (resource == null || listener == null) {
return;
}
IProject project = resource.getProject();
// Remove the listener
Map<IProject, List<IScannerInfoChangeListener>> map = getListeners();
List<IScannerInfoChangeListener> list = map.get(project);
if (list != null && !list.isEmpty()) {
// The list is not empty so try to remove listener
list.remove(listener);
}
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.model.IElementChangedListener#elementChanged(org.eclipse.cdt.core.model.ElementChangedEvent)
*/
public void elementChanged(ElementChangedEvent event) {
try {
processDelta(event.getDelta());
} catch(CModelException e) {
}
}
protected boolean isPathEntryChange(ICElementDelta delta) {
int flags= delta.getFlags();
return (delta.getKind() == ICElementDelta.CHANGED &&
((flags & ICElementDelta.F_CHANGED_PATHENTRY_INCLUDE) != 0 ||
(flags & ICElementDelta.F_CHANGED_PATHENTRY_MACRO) != 0 ||
(flags & ICElementDelta.F_PATHENTRY_REORDER) !=0));
}
/**
* Processes a delta recursively.
*/
protected void processDelta(ICElementDelta delta) throws CModelException {
ICElement element= delta.getElement();
if (isPathEntryChange(delta)) {
IResource res = element.getResource();
IProject project = element.getCProject().getProject();
if (res == null) {
res = project;
}
IScannerInfo info = getScannerInformation(res);
notifyInfoListeners(project, info);
}
ICElementDelta[] affectedChildren= delta.getAffectedChildren();
for (ICElementDelta element2 : affectedChildren) {
processDelta(element2);
}
}
}