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/*******************************************************************************
* Copyright (c) 2005 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 - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.core.pdom;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.dom.ICodeReaderFactory;
import org.eclipse.cdt.core.dom.IPDOM;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.model.ILanguage;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.cdt.core.model.IWorkingCopy;
import org.eclipse.cdt.core.model.LanguageManager;
import org.eclipse.cdt.internal.core.pdom.db.BTree;
import org.eclipse.cdt.internal.core.pdom.db.Database;
import org.eclipse.cdt.internal.core.pdom.dom.IPDOMLinkageFactory;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMBinding;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMFile;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMLinkage;
import org.eclipse.cdt.internal.core.pdom.dom.PDOMName;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.QualifiedName;
/**
* The PDOM Database.
*
* @author Doug Schaefer
*/
public class PDOMDatabase implements IPDOM {
private final IPath dbPath;
private Database db;
private static final int VERSION = 0;
public static final int LINKAGES = Database.DATA_AREA;
public static final int FILE_INDEX = Database.DATA_AREA + 4;
private BTree fileIndex;
private static final QualifiedName dbNameProperty
= new QualifiedName(CCorePlugin.PLUGIN_ID, "dbName"); //$NON-NLS-1$
public PDOMDatabase(IProject project, PDOMManager manager) throws CoreException {
String dbName = project.getPersistentProperty(dbNameProperty);
if (dbName == null) {
dbName = project.getName() + "_"
+ System.currentTimeMillis() + ".pdom";
project.setPersistentProperty(dbNameProperty, dbName);
}
dbPath = CCorePlugin.getDefault().getStateLocation().append(dbName);
db = new Database(dbPath.toOSString(), VERSION);
}
public static interface IListener {
public void handleChange(PDOMDatabase pdom);
}
private List listeners;
public void addListener(IListener listener) {
if (listeners == null)
listeners = new LinkedList();
listeners.add(listener);
}
public void removeListener(IListener listener) {
if (listeners == null)
return;
listeners.remove(listener);
}
private void fireChange() {
if (listeners == null)
return;
Iterator i = listeners.iterator();
while (i.hasNext())
((IListener)i.next()).handleChange(this);
}
public Database getDB() throws CoreException {
if (db == null)
db = new Database(dbPath.toOSString(), VERSION);
return db;
}
public BTree getFileIndex() throws CoreException {
if (fileIndex == null)
fileIndex = new BTree(getDB(), FILE_INDEX);
return fileIndex;
}
public void addSymbols(ITranslationUnit tu) throws CoreException {
final ILanguage language = tu.getLanguage();
if (language == null)
return;
final PDOMLinkage linkage = getLinkage(language);
if (linkage == null)
return;
IASTTranslationUnit ast = language.getTranslationUnit((IFile)tu.getResource(),
ILanguage.AST_USE_INDEX |
ILanguage.AST_SKIP_INDEXED_HEADERS);
if (ast == null)
return;
ast.accept(new ASTVisitor() {
{
shouldVisitNames = true;
shouldVisitDeclarations = true;
}
public int visit(IASTName name) {
try {
linkage.addName(name);
return PROCESS_CONTINUE;
} catch (CoreException e) {
CCorePlugin.log(e);
return PROCESS_ABORT;
}
};
});;
fireChange();
}
public void removeSymbols(ITranslationUnit tu) throws CoreException {
String filename = ((IFile)tu.getResource()).getLocation().toOSString();
PDOMFile file = PDOMFile.find(this, filename);
if (file == null)
return;
file.clear();
}
public void delete() throws CoreException {
getDB().clear();
fileIndex = null;
}
public ICodeReaderFactory getCodeReaderFactory() {
return new PDOMCodeReaderFactory(this);
}
public ICodeReaderFactory getCodeReaderFactory(IWorkingCopy root) {
return new PDOMCodeReaderFactory(this, root);
}
public IASTName[] getDeclarations(IBinding binding) {
try {
if (binding instanceof PDOMBinding) {
PDOMName name = ((PDOMBinding)binding).getFirstDeclaration();
if (name == null)
return new IASTName[0];
return new IASTName[] { name };
}
} catch (CoreException e) {
CCorePlugin.log(e);
}
return new IASTName[0];
}
public IBinding resolveBinding(IASTName name) {
try {
ILanguage language = name.getTranslationUnit().getLanguage();
return getLinkage(language).resolveBinding(name);
} catch (CoreException e) {
CCorePlugin.log(e);
}
return null;
}
public IBinding[] resolvePrefix(IASTName name) {
return new IBinding[0];
}
public PDOMLinkage getLinkage(ILanguage language) throws CoreException {
IPDOMLinkageFactory factory = (IPDOMLinkageFactory)language.getAdapter(IPDOMLinkageFactory.class);
String id = language.getId();
int linkrec = db.getInt(LINKAGES);
while (linkrec != 0) {
if (id.equals(PDOMLinkage.getId(this, linkrec)))
return factory.getLinkage(this, linkrec);
else
linkrec = PDOMLinkage.getNextLinkageRecord(this, linkrec);
}
return factory.createLinkage(this);
}
public PDOMLinkage getLinkage(int record) throws CoreException {
if (record == 0)
return null;
String id = PDOMLinkage.getId(this, record);
ILanguage language = LanguageManager.getInstance().getLanguage(id);
return getLinkage(language);
}
public PDOMLinkage getFirstLinkage() throws CoreException {
return getLinkage(db.getInt(LINKAGES));
}
public void insertLinkage(PDOMLinkage linkage) throws CoreException {
linkage.setNext(db.getInt(LINKAGES));
db.putInt(LINKAGES, linkage.getRecord());
}
public PDOMBinding getBinding(int record) throws CoreException {
if (record == 0)
return null;
else
return PDOMLinkage.getLinkage(this, record).getBinding(record);
}
}
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