first incremental cut at editor without packages directories

editor/tools/plugins/com.google.dart.tools.core/src/com/google/dart/tools/core/internal/analysis/model/ProjectImpl.java

 /*
  * Copyright (c) 2013, the Dart project authors.
  * 
  * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
  * 
  * http://www.eclipse.org/legal/epl-v10.html
  * 
  * Unless required by applicable law or agreed to in writing, software distributed under the License
  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
@@ skipping 723 matching lines @@
     return contexts.toArray(new AnalysisContext[contexts.size()]);
   }
 
   /**
    * Find the most appropriate package resolver for the given container, based on presence of
    * pubspec, package roots etc.
    * 
    * @return UriResolver used to resolve package: uris.
    */
   private UriResolver getPackageUriResolver(IContainer container, DartSdk sdk, boolean hasPubspec) {
-
-    UriResolver pkgResolver = null;
     File[] packageRoots = factory.getPackageRoots(container);
     if (packageRoots.length > 0) {
-      pkgResolver = new PackageUriResolver(packageRoots);
-      return pkgResolver;
+      return new PackageUriResolver(packageRoots);
     }
-    File[] packagesDirs = null;
-    if (hasPubspec) {
+    if (hasPubspec && !DartCoreDebug.NO_PUB_PACKAGES) {
       IPath location = container.getLocation();
       if (location != null) {
-        packagesDirs = new File[] {new File(location.toFile(), PACKAGES_DIRECTORY_NAME)};
+        File[] packagesDirs = new File[] {new File(location.toFile(), PACKAGES_DIRECTORY_NAME)};
+        return new PackageUriResolver(packagesDirs);
       }
     }
-    if (packagesDirs != null) {
-      pkgResolver = new PackageUriResolver(packagesDirs);
-    } else if (sdk instanceof DirectoryBasedDartSdk) {
+    if (sdk instanceof DirectoryBasedDartSdk) {
       IPath location = container.getLocation();
       if (location != null) {
-        pkgResolver = new InstrumentedExplicitPackageUriResolver(
+        return new InstrumentedExplicitPackageUriResolver(
             (DirectoryBasedDartSdk) sdk,
             location.toFile());
       }
     }
-    return pkgResolver;
+    return null;
   }
 
   /**
    * Find the {@link PubFolder} defined for an ancestor. Must synchronize against
    * {@link #pubFolders} before calling this method and either call {@link #initialize()} or check
    * that {@link #isInitialized()} returns {@code true}.
    * 
    * @param path the resource's full path
    * @return the containing pub folder or {@code null} if none
    */
@@ skipping 86 matching lines @@
     sourceFactory.setLocalSourcePredicate(new WorkspaceLocalSourcePredicate(container));
 
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
     options.setHint(DartCore.getPlugin().isHintsEnabled());
     options.setDart2jsHint(DartCore.getPlugin().isHintsDart2JSEnabled());
     options.setAnalyzeAngular(DartCore.getPlugin().isAngularAnalysisEnabled());
     options.setIncremental(DartCoreDebug.EXPERIMENTAL);
 
     context.setSourceFactory(sourceFactory);
     context.setAnalysisOptions(options);
+
+    if (DartCoreDebug.NO_PUB_PACKAGES && pkgResolver instanceof ExplicitPackageUriResolver) {
+      //TODO (danrubel): Add package sources to context so that it is properly indexed
+//      ChangeSet changeSet = new ChangeSet();
+//      for (File dir : ((ExplicitPackageUriResolver) pkgResolver).getPackageDirectories()) {
+//        // traverse package directory tree
+//        changeSet.addedSource(new FileBasedSource(file));
+//      }
+//      context.applyChanges(changeSet);
+    }
+
     return context;
   }
 
   /**
    * Initialize {@link #pubFolders} and {@link #defaultContext} if not already been initialized.
    * Must synchronize against {@link #pubFolders} before calling this method.
    */
   private void initialize() {
     if (isInitialized()) {
       return;
@@ skipping 61 matching lines @@
    * @return {@code true} if initialized, else {@code false}
    */
   private boolean isInitialized() {
     return defaultContext != null || defaultContextId != null;
   }
 
   private void logNoLocation(IContainer container) {
     DartCore.logInformation("No location for " + container);
   }
 }