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/*******************************************************************************
* Copyright (c) 2007 Wind River Systems, Inc. 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:
* Markus Schorn - initial API and implementation
* Andrew Ferguson (Symbian)
*******************************************************************************/
package org.eclipse.cdt.internal.core.index;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.index.IIndex;
import org.eclipse.cdt.core.index.IIndexManager;
import org.eclipse.cdt.core.model.CoreModel;
import org.eclipse.cdt.core.model.ICProject;
import org.eclipse.cdt.core.parser.util.ArrayUtil;
import org.eclipse.cdt.core.settings.model.ICConfigurationDescription;
import org.eclipse.cdt.core.settings.model.ICProjectDescription;
import org.eclipse.cdt.internal.core.CCoreInternals;
import org.eclipse.cdt.internal.core.index.provider.IndexProviderManager;
import org.eclipse.cdt.internal.core.pdom.PDOMManager;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
/**
* Class that creates indexes based on PDOMs
* @since 4.0
*/
public class IndexFactory {
private static final int ADD_DEPENDENCIES = IIndexManager.ADD_DEPENDENCIES;
private static final int ADD_DEPENDENT = IIndexManager.ADD_DEPENDENT;
private static final int SKIP_PROVIDED = IIndexManager.SKIP_PROVIDED;
private PDOMManager fPDOMManager;
public IndexFactory(PDOMManager manager) {
fPDOMManager= manager;
}
public IIndex getIndex(ICProject[] projects, int options) throws CoreException {
projects = (ICProject[]) ArrayUtil.removeNulls(ICProject.class, projects);
boolean addDependencies= (options & ADD_DEPENDENCIES) != 0;
boolean addDependent= (options & ADD_DEPENDENT) != 0;
boolean skipProvided= (options & SKIP_PROVIDED) != 0;
HashMap map= new HashMap();
Collection selectedProjects= getProjects(projects, addDependencies, addDependent, map, new Integer(1));
HashMap fragments= new LinkedHashMap();
for (Iterator iter = selectedProjects.iterator(); iter.hasNext(); ) {
ICProject cproject = (ICProject) iter.next();
IIndexFragment pdom= fPDOMManager.getPDOM(cproject);
if (pdom != null) {
safeAddFragment(fragments, pdom);
if(!skipProvided) {
safeAddProvidedFragments(cproject, fragments);
}
}
}
if (fragments.isEmpty()) {
return EmptyCIndex.INSTANCE;
}
int primaryFragmentCount= fragments.size();
if (!addDependencies) {
projects= (ICProject[]) selectedProjects.toArray(new ICProject[selectedProjects.size()]);
selectedProjects.clear();
// don't clear the map, so projects are not selected again
selectedProjects= getProjects(projects, true, false, map, new Integer(2));
for (Iterator iter = selectedProjects.iterator(); iter.hasNext(); ) {
ICProject cproject = (ICProject) iter.next();
IIndexFragment pdom= fPDOMManager.getPDOM(cproject);
safeAddFragment(fragments, pdom);
if(!skipProvided) {
safeAddProvidedFragments(cproject, fragments);
}
}
}
Collection pdoms= fragments.values();
return new CIndex((IIndexFragment[]) pdoms.toArray(new IIndexFragment[pdoms.size()]), primaryFragmentCount);
}
public IWritableIndex getWritableIndex(ICProject project) throws CoreException {
Map readOnlyFrag= new LinkedHashMap();
IWritableIndexFragment pdom= (IWritableIndexFragment) fPDOMManager.getPDOM(project);
if (pdom == null) {
throw new CoreException(CCorePlugin.createStatus(
MessageFormat.format(Messages.IndexFactory_errorNoSuchPDOM0, new Object[]{project.getElementName()})));
}
safeAddProvidedFragments(project, readOnlyFrag);
Collection selectedProjects= getProjects(new ICProject[] {project}, true, false, new HashMap(), new Integer(1));
selectedProjects.remove(project);
for (Iterator iter = selectedProjects.iterator(); iter.hasNext(); ) {
ICProject cproject = (ICProject) iter.next();
safeAddFragment(readOnlyFrag, fPDOMManager.getPDOM(cproject));
}
Collection roPdoms= readOnlyFrag.values();
return new WritableCIndex(pdom, (IIndexFragment[]) roPdoms.toArray(new IIndexFragment[roPdoms.size()]) );
}
private Collection getProjects(ICProject[] projects, boolean addDependencies, boolean addDependent, HashMap map, Integer markWith) {
List projectsToSearch= new ArrayList();
for (int i = 0; i < projects.length; i++) {
ICProject cproject = projects[i];
IProject project= cproject.getProject();
checkAddProject(project, map, projectsToSearch, markWith);
projectsToSearch.add(project);
}
if (addDependencies || addDependent) {
for (int i=0; i<projectsToSearch.size(); i++) {
IProject project= (IProject) projectsToSearch.get(i);
IProject[] nextLevel;
try {
if (addDependencies) {
nextLevel = project.getReferencedProjects();
for (int j = 0; j < nextLevel.length; j++) {
checkAddProject(nextLevel[j], map, projectsToSearch, markWith);
}
}
if (addDependent) {
nextLevel= project.getReferencingProjects();
for (int j = 0; j < nextLevel.length; j++) {
checkAddProject(nextLevel[j], map, projectsToSearch, markWith);
}
}
} catch (CoreException e) {
// silently ignore
map.put(project, new Integer(0));
}
}
}
CoreModel cm= CoreModel.getDefault();
Collection result= new ArrayList();
for (Iterator iter= map.entrySet().iterator(); iter.hasNext(); ) {
Map.Entry entry= (Map.Entry) iter.next();
if (entry.getValue() == markWith) {
ICProject cproject= cm.create((IProject) entry.getKey());
if (cproject != null) {
result.add(cproject);
}
}
}
return result;
}
private void checkAddProject(IProject project, HashMap map, List projectsToSearch, Integer markWith) {
if (map.get(project) == null) {
if (project.isOpen()) {
map.put(project, markWith);
projectsToSearch.add(project);
}
else {
map.put(project, new Integer(0));
}
}
}
/**
* Add an entry for the specified fragment. This copes with problems occurring when reading
* the fragment ID.
* @param id2fragment the map to add the entry to
* @param fragment the fragment or null (which will result in no action)
*/
private void safeAddFragment(Map id2fragment, IIndexFragment fragment) {
if(fragment!=null) {
try {
fragment.acquireReadLock();
try {
String id= fragment.getProperty(IIndexFragment.PROPERTY_FRAGMENT_ID);
id2fragment.put(id, fragment);
} finally {
fragment.releaseReadLock();
}
} catch(CoreException ce) {
CCorePlugin.log(ce);
} catch(InterruptedException ie) {
CCorePlugin.log(ie);
}
}
}
/**
* Adds ID -> IIndexFragment entries to the specified Map, for fragments provided under the
* CIndex extension point for the specified ICProject
* @param cproject
* @param fragments
*/
private void safeAddProvidedFragments(ICProject cproject, Map fragments) {
ICProjectDescription pd= CoreModel.getDefault().getProjectDescription(cproject.getProject(), false);
if(pd!=null) {
IndexProviderManager ipm = CCoreInternals.getPDOMManager().getIndexProviderManager();
ICConfigurationDescription cfg= pd.getDefaultSettingConfiguration();
if (cfg != null) {
try {
IIndexFragment[] pFragments= ipm.getProvidedIndexFragments(cfg);
for(int i=0; i<pFragments.length; i++) {
safeAddFragment(fragments, pFragments[i]);
}
} catch(CoreException ce) {
CCorePlugin.log(ce);
}
}
}
}
}
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