Examples of com.google.dart.engine.source.Source

com.google.dart.engine.source.Source
The interface {@code Source} defines the behavior of objects representing source code that can beanalyzed by the analysis engine.
Implementations of this interface need to be aware of some assumptions made by the analysis engine concerning sources:
- Sources are not required to be unique. That is, there can be multiple instances representing the same source.
- Sources are long lived. That is, the engine is allowed to hold on to a source for an extended period of time and that source must continue to report accurate and up-to-date information.
Because of these assumptions, most implementations will not maintain any state but will delegate to an authoritative system of record in order to implement this API. For example, a source that represents files on disk would typically query the file system to determine the state of the file.
If the instances that implement this API are the system of record, then they will typically be unique. In that case, sources that are created that represent non-existent files must also be retained so that if those files are created at a later date the long-lived sources representing those files will know that they now exist. @coverage dart.engine.source

  @Override
  public String computeDocumentationComment(Element element) throws AnalysisException {
    if (element == null) {
      return null;
    }
    Source source = element.getSource();
    if (source == null) {
      return null;
    }
    CompilationUnit unit = parseCompilationUnit(source);
    if (unit == null) {

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    ArrayList<Source> sourcesToRemove = new ArrayList<Source>();
    synchronized (cacheLock) {
      // Move sources in the specified directory to the new context
      MapIterator<Source, SourceEntry> iterator = cache.iterator();
      while (iterator.moveNext()) {
        Source source = iterator.getKey();
        SourceEntry sourceEntry = iterator.getValue();
        if (container.contains(source)) {
          sourcesToRemove.add(source);
          newContext.addSourceInfo(source, sourceEntry.getWritableCopy());
        }

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  @Override
  public Element getElement(ElementLocation location) {
    // TODO(brianwilkerson) This should not be a "get" method.
    try {
      String[] components = location.getComponents();
      Source source = computeSourceFromEncoding(components[0]);
      String sourceName = source.getShortName();
      if (AnalysisEngine.isDartFileName(sourceName)) {
        ElementImpl element = (ElementImpl) computeLibraryElement(source);
        for (int i = 1; i < components.length; i++) {
          if (element == null) {
            return null;

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    // either directly or indirectly.
    ArrayList<Source> sources = new ArrayList<Source>();
    synchronized (cacheLock) {
      MapIterator<Source, SourceEntry> iterator = cache.iterator();
      while (iterator.moveNext()) {
        Source source = iterator.getKey();
        SourceEntry sourceEntry = iterator.getValue();
        if (sourceEntry.getKind() == SourceKind.LIBRARY && !source.isInSystemLibrary()) {
//          DartEntry dartEntry = (DartEntry) sourceEntry;
//          if (dartEntry.getValue(DartEntry.IS_LAUNCHABLE) && dartEntry.getValue(DartEntry.IS_CLIENT)) {
          sources.add(source);
//          }
        }

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    // directly or indirectly.
    ArrayList<Source> sources = new ArrayList<Source>();
    synchronized (cacheLock) {
      MapIterator<Source, SourceEntry> iterator = cache.iterator();
      while (iterator.moveNext()) {
        Source source = iterator.getKey();
        SourceEntry sourceEntry = iterator.getValue();
        if (sourceEntry.getKind() == SourceKind.LIBRARY && !source.isInSystemLibrary()) {
//          DartEntry dartEntry = (DartEntry) sourceEntry;
//          if (dartEntry.getValue(DartEntry.IS_LAUNCHABLE) && !dartEntry.getValue(DartEntry.IS_CLIENT)) {
          sources.add(source);
//          }
        }

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  @Override
  public Namespace getPublicNamespace(LibraryElement library) {
    // TODO(brianwilkerson) Rename this to not start with 'get'. Note that this is not part of the
    // API of the interface.
    Source source = library.getDefiningCompilationUnit().getSource();
    DartEntry dartEntry = getReadableDartEntry(source);
    if (dartEntry == null) {
      return null;
    }
    Namespace namespace = null;
    if (dartEntry.getValue(DartEntry.ELEMENT) == library) {
      namespace = dartEntry.getValue(DartEntry.PUBLIC_NAMESPACE);
    }
    if (namespace == null) {
      NamespaceBuilder builder = new NamespaceBuilder();
      namespace = builder.createPublicNamespaceForLibrary(library);
      synchronized (cacheLock) {
        dartEntry = getReadableDartEntry(source);
        if (dartEntry == null) {
          AnalysisEngine.getInstance().getLogger().logError(
              "Could not compute the public namespace for " + library.getSource().getFullName(),
              new AnalysisException("A Dart file became a non-Dart file: " + source.getFullName()));
          return null;
        }
        if (dartEntry.getValue(DartEntry.ELEMENT) == library) {
          DartEntryImpl dartCopy = getReadableDartEntry(source).getWritableCopy();
          dartCopy.setValue(DartEntry.PUBLIC_NAMESPACE, namespace);

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    synchronized (cacheLock) {
      MapIterator<Source, SourceEntry> iterator = cache.iterator();
      while (iterator.moveNext()) {
        SourceEntry sourceEntry = iterator.getValue();
        if (sourceEntry instanceof DartEntry) {
          Source source = iterator.getKey();
          DartEntry dartEntry = (DartEntry) sourceEntry;
          SourceKind kind = dartEntry.getValue(DartEntry.SOURCE_KIND);
          // get library independent values
          statistics.putCacheItem(dartEntry, SourceEntry.LINE_INFO);
          statistics.putCacheItem(dartEntry, DartEntry.PARSE_ERRORS);
          statistics.putCacheItem(dartEntry, DartEntry.PARSED_UNIT);
          statistics.putCacheItem(dartEntry, DartEntry.SOURCE_KIND);
          if (kind == SourceKind.LIBRARY) {
            statistics.putCacheItem(dartEntry, DartEntry.ELEMENT);
            statistics.putCacheItem(dartEntry, DartEntry.EXPORTED_LIBRARIES);
            statistics.putCacheItem(dartEntry, DartEntry.IMPORTED_LIBRARIES);
            statistics.putCacheItem(dartEntry, DartEntry.INCLUDED_PARTS);
            statistics.putCacheItem(dartEntry, DartEntry.IS_CLIENT);
            statistics.putCacheItem(dartEntry, DartEntry.IS_LAUNCHABLE);
            // The public namespace isn't computed by performAnalysisTask() and therefore isn't
            // interesting.
            //statistics.putCacheItem(dartEntry, DartEntry.PUBLIC_NAMESPACE);
          }
          // get library-specific values
          Source[] librarySources = getLibrariesContaining(source);
          for (Source librarySource : librarySources) {
            statistics.putCacheItemInLibrary(dartEntry, librarySource, DartEntry.RESOLUTION_ERRORS);
            statistics.putCacheItemInLibrary(dartEntry, librarySource, DartEntry.RESOLVED_UNIT);
            if (generateSdkErrors || !source.isInSystemLibrary()) {
              statistics.putCacheItemInLibrary(
                  dartEntry,
                  librarySource,
                  DartEntry.VERIFICATION_ERRORS);
              if (hintsEnabled) {

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    return statistics;
  }


  @Override
  public TypeProvider getTypeProvider() throws AnalysisException {
    Source coreSource = getSourceFactory().forUri(DartSdk.DART_CORE);
    if (coreSource == null) {
      throw new AnalysisException("Could not create a source for dart:core");
    }
    LibraryElement coreElement = computeLibraryElement(coreSource);
    if (coreElement == null) {

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    }
    synchronized (cacheLock) {
      // TODO(brianwilkerson) This does not lock against the other context's cacheLock.
      MapIterator<Source, SourceEntry> iterator = cache.iterator();
      while (iterator.moveNext()) {
        Source newSource = iterator.getKey();
        SourceEntry existingEntry = getReadableSourceEntry(newSource);
        if (existingEntry == null) {
          // TODO(brianwilkerson) Decide whether we really need to copy the info.
          cache.put(newSource, iterator.getValue().getWritableCopy());
        } else {

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    long performEnd = System.currentTimeMillis();
    ChangeNotice[] notices = getChangeNotices(false);
    int noticeCount = notices.length;
    for (int i = 0; i < noticeCount; i++) {
      ChangeNotice notice = notices[i];
      Source source = notice.getSource();
      // TODO(brianwilkerson) Figure out whether the compilation unit is always resolved, or whether
      // we need to decide whether to invoke the "parsed" or "resolved" method. This might be better
      // done when recording task results in order to reduce the chance of errors.
//      if (notice.getCompilationUnit() != null) {
//        notifyResolvedDart(source, notice.getCompilationUnit());

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