First cut at analysis driver

pkg/analyzer/test/src/task/driver_test.dart

+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library test.src.task.driver_test;
+
+import 'dart:async';
+import 'dart:collection';
+
+import 'package:analyzer/src/cancelable_future.dart';
+import 'package:analyzer/src/context/cache.dart';
+import 'package:analyzer/src/generated/ast.dart';
+import 'package:analyzer/src/generated/constant.dart';
+import 'package:analyzer/src/generated/element.dart';
+import 'package:analyzer/src/generated/engine.dart' hide AnalysisTask;
+import 'package:analyzer/src/generated/error.dart';
+import 'package:analyzer/src/generated/html.dart';
+import 'package:analyzer/src/generated/java_engine.dart';
+import 'package:analyzer/src/generated/resolver.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/task/driver.dart';
+import 'package:analyzer/src/task/manager.dart';
+import 'package:analyzer/task/model.dart';
+import 'package:unittest/unittest.dart';
+
+import '../../generated/resolver_test.dart';
+import '../../generated/test_support.dart';
+import '../../reflective_tests.dart';
+import 'test_support.dart';
+
+main() {
+  groupSep = ' | ';
+  runReflectiveTests(AnalysisDriverTest);
+  runReflectiveTests(WorkOrderTest);
+  runReflectiveTests(WorkItemTest);
+}
+
+@reflectiveTest
+class AnalysisDriverTest extends EngineTestCase {
+  TaskManager manager;
+  _TestContext context;
+  AnalysisDriver driver;
+
+  void setUp() {
+    manager = new TaskManager();
+    context = new _TestContext();
+    driver = new AnalysisDriver(manager, context);
+  }
+
+  test_computeResult() {
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    TestAnalysisTask task;
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => task,
+        (target) => {},
+        [result]);
+    task = new TestAnalysisTask(context, target, descriptor: descriptor);
+    manager.addTaskDescriptor(descriptor);
+
+    driver.computeResult(target, result);
+    expect(context.getCacheEntry(target).getValue(result), 1);
+  }
+
+  test_create() {
+    expect(driver, isNotNull);
+    expect(driver.context, context);
+    expect(driver.currentWorkOrder, isNull);
+    expect(driver.taskManager, manager);
+  }
+
+  test_createNextWorkOrder_complete() {
+    AnalysisTarget priorityTarget = new TestSource();
+    AnalysisTarget normalTarget = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {},
+        [result]);
+    manager.addGeneralResult(result);
+    manager.addTaskDescriptor(descriptor);
+    context.priorityTargets.add(priorityTarget);
+    context.getCacheEntry(priorityTarget).setValue(result, '');
+    context.explicitTargets.add(normalTarget);
+    context.getCacheEntry(priorityTarget).setValue(result, '');
+
+    expect(driver.createNextWorkOrder(), isNull);
+  }
+
+  test_createNextWorkOrder_normalTarget() {
+    AnalysisTarget priorityTarget = new TestSource();
+    AnalysisTarget normalTarget = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {},
+        [result]);
+    manager.addGeneralResult(result);
+    manager.addTaskDescriptor(descriptor);
+    context.priorityTargets.add(priorityTarget);
+    context.getCacheEntry(priorityTarget).setValue(result, '');
+    context.explicitTargets.add(normalTarget);
+    context.getCacheEntry(normalTarget).setState(result, CacheState.INVALID);
+
+    WorkOrder workOrder = driver.createNextWorkOrder();
+    expect(workOrder, isNotNull);
+    expect(workOrder.moveNext(), true);
+    expect(workOrder.currentItem.target, normalTarget);
+  }
+
+  test_createNextWorkOrder_noTargets() {
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {},
+        [result]);
+    manager.addGeneralResult(result);
+    manager.addTaskDescriptor(descriptor);
+
+    expect(driver.createNextWorkOrder(), isNull);
+  }
+
+  test_createNextWorkOrder_priorityTarget() {
+    AnalysisTarget priorityTarget = new TestSource();
+    AnalysisTarget normalTarget = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {},
+        [result]);
+    manager.addGeneralResult(result);
+    manager.addTaskDescriptor(descriptor);
+    context.priorityTargets.add(priorityTarget);
+    context.getCacheEntry(priorityTarget).setState(result, CacheState.INVALID);
+    context.explicitTargets.add(normalTarget);
+    context.getCacheEntry(normalTarget).setState(result, CacheState.INVALID);
+
+    WorkOrder workOrder = driver.createNextWorkOrder();
+    expect(workOrder, isNotNull);
+    expect(workOrder.moveNext(), true);
+    expect(workOrder.currentItem.target, priorityTarget);
+  }
+
+  test_createWorkOrderForResult_error() {
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    context.getCacheEntry(target).setState(result, CacheState.ERROR);
+
+    expect(driver.createWorkOrderForResult(target, result), isNull);
+  }
+
+  test_createWorkOrderForResult_inProcess() {
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    context.getCacheEntry(target).setState(result, CacheState.IN_PROCESS);
+
+    expect(driver.createWorkOrderForResult(target, result), isNull);
+  }
+
+  test_createWorkOrderForResult_invalid() {
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {},
+        [result]);
+    manager.addTaskDescriptor(descriptor);
+    context.getCacheEntry(target).setState(result, CacheState.INVALID);
+
+    WorkOrder workOrder = driver.createWorkOrderForResult(target, result);
+    expect(workOrder, isNotNull);
+  }
+
+  test_createWorkOrderForResult_valid() {
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    context.getCacheEntry(target).setValue(result, '');
+
+    expect(driver.createWorkOrderForResult(target, result), isNull);
+  }
+
+  test_createWorkOrderForTarget_complete_generalTarget_generalResult() {
+    _createWorkOrderForTarget(true, false, false);
+  }
+
+  test_createWorkOrderForTarget_complete_generalTarget_priorityResult() {
+    _createWorkOrderForTarget(true, false, true);
+  }
+
+  test_createWorkOrderForTarget_complete_priorityTarget_generalResult() {
+    _createWorkOrderForTarget(true, true, false);
+  }
+
+  test_createWorkOrderForTarget_complete_priorityTarget_priorityResult() {
+    _createWorkOrderForTarget(true, true, true);
+  }
+
+  test_createWorkOrderForTarget_incomplete_generalTarget_generalResult() {
+    _createWorkOrderForTarget(false, false, false);
+  }
+
+  test_createWorkOrderForTarget_incomplete_generalTarget_priorityResult() {
+    _createWorkOrderForTarget(false, false, true);
+  }
+
+  test_createWorkOrderForTarget_incomplete_priorityTarget_generalResult() {
+    _createWorkOrderForTarget(false, true, false);
+  }
+
+  test_createWorkOrderForTarget_incomplete_priorityTarget_priorityResult() {
+    _createWorkOrderForTarget(false, true, true);
+  }
+
+  test_performAnalysisTask() {
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    TestAnalysisTask task;
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => task,
+        (target) => {},
+        [result]);
+    task = new TestAnalysisTask(context, target, descriptor: descriptor);
+    manager.addTaskDescriptor(descriptor);
+    manager.addGeneralResult(result);
+    context.priorityTargets.add(target);
+
+    expect(driver.performAnalysisTask(), true);
+    expect(driver.performAnalysisTask(), true);
+    expect(driver.performAnalysisTask(), false);
+  }
+
+  test_performWorkItem_exceptionInTask() {
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    CaughtException exception =
+        new CaughtException(new AnalysisException(), null);
+    TestAnalysisTask task;
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => task,
+        (target) => {},
+        [result]);
+    task = new TestAnalysisTask(
+        context,
+        target,
+        descriptor: descriptor,
+        exception: exception);
+    WorkItem item = new WorkItem(context, target, descriptor);
+
+    driver.performWorkItem(item);
+    CacheEntry targetEntry = context.getCacheEntry(item.target);
+    expect(targetEntry.exception, exception);
+    expect(targetEntry.getState(result), CacheState.ERROR);
+  }
+
+  test_performWorkItem_noException() {
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    TestAnalysisTask task;
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => task,
+        (target) => {},
+        [result]);
+    task = new TestAnalysisTask(context, target, descriptor: descriptor);
+    WorkItem item = new WorkItem(context, target, descriptor);
+
+    driver.performWorkItem(item);
+    CacheEntry targetEntry = context.getCacheEntry(item.target);
+    expect(targetEntry.exception, isNull);
+    expect(targetEntry.getState(result), CacheState.VALID);
+  }
+
+  test_performWorkItem_preExistingException() {
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {},
+        [result]);
+    CaughtException exception =
+        new CaughtException(new AnalysisException(), null);
+    WorkItem item = new WorkItem(context, target, descriptor);
+    item.exception = exception;
+
+    driver.performWorkItem(item);
+    CacheEntry targetEntry = context.getCacheEntry(item.target);
+    expect(targetEntry.exception, exception);
+    expect(targetEntry.getState(result), CacheState.ERROR);
+  }
+
+  test_reset() {
+    ResultDescriptor inputResult = new ResultDescriptor('input', null);
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {
+      'one': inputResult.inputFor(target)
+    }, [new ResultDescriptor('output', null)]);
+    driver.currentWorkOrder =
+        new WorkOrder(manager, new WorkItem(null, null, descriptor));
+
+    driver.reset();
+    expect(driver.currentWorkOrder, isNull);
+  }
+
+  /**
+   * [complete] is `true` if the value of the result has already been computed.
+   * [priorityTarget] is `true` if the target is in the list of priority
+   * targets.
+   * [priorityResult] is `true` if the result should only be computed for
+   * priority targets.
+   */
+  _createWorkOrderForTarget(bool complete, bool priorityTarget,
+      bool priorityResult) {
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor result = new ResultDescriptor('result', null);
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {},
+        [result]);
+    if (priorityResult) {
+      manager.addPriorityResult(result);
+    } else {
+      manager.addGeneralResult(result);
+    }
+    manager.addTaskDescriptor(descriptor);
+    if (priorityTarget) {
+      context.priorityTargets.add(target);
+    } else {
+      context.explicitTargets.add(target);
+    }
+    if (complete) {
+      context.getCacheEntry(target).setValue(result, '');
+    } else {
+      context.getCacheEntry(target).setState(result, CacheState.INVALID);
+    }
+
+    WorkOrder workOrder =
+        driver.createWorkOrderForTarget(target, priorityTarget);
+    if (complete) {
+      expect(workOrder, isNull);
+    } else if (priorityResult) {
+      expect(workOrder, priorityTarget ? isNotNull : isNull);
+    } else {
+      expect(workOrder, isNotNull);
+    }
+  }
+}
+
+@reflectiveTest
+class WorkItemTest extends EngineTestCase {
+  test_buildTask_complete() {
+    AnalysisContext context = new _TestContext();
+    AnalysisTarget target = new TestSource();
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {},
+        [new ResultDescriptor('output', null)]);
+    WorkItem item = new WorkItem(context, target, descriptor);
+    AnalysisTask task = item.buildTask();
+    expect(task, isNotNull);
+  }
+
+  test_buildTask_incomplete() {
+    AnalysisContext context = new _TestContext();
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor inputResult = new ResultDescriptor('input', null);
+    List<ResultDescriptor> outputResults = <ResultDescriptor>[
+        new ResultDescriptor('output', null)];
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) =>
+            new TestAnalysisTask(context, target, results: outputResults),
+        (target) => {
+      'one': inputResult.inputFor(target)
+    }, outputResults);
+    WorkItem item = new WorkItem(context, target, descriptor);
+    expect(() => item.buildTask(), throwsStateError);
+  }
+
+  test_create() {
+    AnalysisContext context = new _TestContext();
+    AnalysisTarget target = new TestSource();
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        null,
+        (target) => {},
+        [new ResultDescriptor('result', null)]);
+    WorkItem item = new WorkItem(context, target, descriptor);
+    expect(item, isNotNull);
+    expect(item.context, context);
+    expect(item.descriptor, descriptor);
+    expect(item.target, target);
+  }
+
+  test_gatherInputs_complete() {
+    TaskManager manager = new TaskManager();
+    AnalysisContext context = new _TestContext();
+    AnalysisTarget target = new TestSource();
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {},
+        [new ResultDescriptor('output', null)]);
+    WorkItem item = new WorkItem(context, target, descriptor);
+    WorkItem result = item.gatherInputs(manager);
+    expect(result, isNull);
+    expect(item.exception, isNull);
+  }
+
+  test_gatherInputs_incomplete() {
+    TaskManager manager = new TaskManager();
+    AnalysisContext context = new _TestContext();
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor resultA = new ResultDescriptor('resultA', null);
+    ResultDescriptor resultB = new ResultDescriptor('resultB', null);
+    TaskDescriptor task1 = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target, results: [resultA]),
+        (target) => {},
+        [resultA]);
+    TaskDescriptor task2 = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {
+      'one': resultA.inputFor(target)
+    }, [resultB]);
+    manager.addTaskDescriptor(task1);
+    manager.addTaskDescriptor(task2);
+    WorkItem item = new WorkItem(context, target, task2);
+    expect(item.gatherInputs(manager), isNotNull);
+  }
+
+  test_gatherInputs_invalid() {
+    TaskManager manager = new TaskManager();
+    AnalysisContext context = new _TestContext();
+    AnalysisTarget target = new TestSource();
+    ResultDescriptor inputResult = new ResultDescriptor('input', null);
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        (context, target) => new TestAnalysisTask(context, target),
+        (target) => {
+      'one': inputResult.inputFor(target)
+    }, [new ResultDescriptor('output', null)]);
+    WorkItem item = new WorkItem(context, target, descriptor);
+    WorkItem result = item.gatherInputs(manager);
+    expect(result, isNull);
+    expect(item.exception, isNotNull);
+  }
+}
+
+@reflectiveTest
+class WorkOrderTest extends EngineTestCase {
+  test_create() {
+    TaskManager manager = new TaskManager();
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        null,
+        (_) => {},
+        [new ResultDescriptor('result', null)]);
+    WorkOrder order =
+        new WorkOrder(manager, new WorkItem(null, null, descriptor));
+    expect(order, isNotNull);
+    expect(order.currentItem, isNull);
+    expect(order.pendingItems, hasLength(1));
+    expect(order.taskManager, manager);
+  }
+
+  test_moveNext() {
+    TaskManager manager = new TaskManager();
+    TaskDescriptor descriptor = new TaskDescriptor(
+        'task',
+        null,
+        (_) => {},
+        [new ResultDescriptor('result', null)]);
+    WorkItem workItem = new WorkItem(null, null, descriptor);
+    WorkOrder order = new WorkOrder(manager, workItem);
+    expect(order.moveNext(), true);
+    expect(order.current, workItem);
+  }
+}
+
+class _TestContext implements ExtendedAnalysisContext {
+  InternalAnalysisContext baseContext =
+      AnalysisContextFactory.contextWithCore();
+
+  @override
+  List<AnalysisTarget> explicitTargets = <AnalysisTarget>[];
+
+  Map<AnalysisTarget, CacheEntry> entryMap =
+      new HashMap<AnalysisTarget, CacheEntry>();
+
+  @override
+  List<AnalysisTarget> priorityTargets = <AnalysisTarget>[];
+
+  _TestContext();
+
+  AnalysisOptions get analysisOptions => baseContext.analysisOptions;
+
+  void set analysisOptions(AnalysisOptions options) {
+    baseContext.analysisOptions = options;
+  }
+
+  @override
+  void set analysisPriorityOrder(List<Source> sources) {
+    baseContext.analysisPriorityOrder = sources;
+  }
+
+  @override
+  set contentCache(ContentCache value) {
+    baseContext.contentCache = value;
+  }
+
+  @override
+  DeclaredVariables get declaredVariables => baseContext.declaredVariables;
+
+  @override
+  List<Source> get htmlSources => baseContext.htmlSources;
+
+  @override
+  bool get isDisposed => baseContext.isDisposed;
+
+  @override
+  List<Source> get launchableClientLibrarySources =>
+      baseContext.launchableClientLibrarySources;
+
+  @override
+  List<Source> get launchableServerLibrarySources =>
+      baseContext.launchableServerLibrarySources;
+
+  @override
+  List<Source> get librarySources => baseContext.librarySources;
+
+  @override
+  Stream<SourcesChangedEvent> get onSourcesChanged =>
+      baseContext.onSourcesChanged;
+
+  @override
+  List<Source> get prioritySources => baseContext.prioritySources;
+
+  @override
+  List<Source> get refactoringUnsafeSources =>
+      baseContext.refactoringUnsafeSources;
+
+  SourceFactory get sourceFactory => baseContext.sourceFactory;
+
+  void set sourceFactory(SourceFactory factory) {
+    baseContext.sourceFactory = factory;
+  }
+
+  @override
+  AnalysisContextStatistics get statistics => baseContext.statistics;
+
+  @override
+  TypeProvider get typeProvider => baseContext.typeProvider;
+
+  @override
+  void addListener(AnalysisListener listener) {
+    baseContext.addListener(listener);
+  }
+
+  @override
+  void addSourceInfo(Source source, SourceEntry info) {
+    baseContext.addSourceInfo(source, info);
+  }
+
+  @override
+  void applyAnalysisDelta(AnalysisDelta delta) {
+    baseContext.applyAnalysisDelta(delta);
+  }
+
+  @override
+  void applyChanges(ChangeSet changeSet) {
+    baseContext.applyChanges(changeSet);
+  }
+
+  @override
+  String computeDocumentationComment(Element element) {
+    return baseContext.computeDocumentationComment(element);
+  }
+
+  @override
+  List<AnalysisError> computeErrors(Source source) {
+    return baseContext.computeErrors(source);
+  }
+
+  @override
+  List<Source> computeExportedLibraries(Source source) {
+    return baseContext.computeExportedLibraries(source);
+  }
+
+  @override
+  HtmlElement computeHtmlElement(Source source) {
+    return baseContext.computeHtmlElement(source);
+  }
+
+  @override
+  List<Source> computeImportedLibraries(Source source) {
+    return baseContext.computeImportedLibraries(source);
+  }
+
+  @override
+  SourceKind computeKindOf(Source source) {
+    return baseContext.computeKindOf(source);
+  }
+
+  @override
+  LibraryElement computeLibraryElement(Source source) {
+    return baseContext.computeLibraryElement(source);
+  }
+
+  @override
+  LineInfo computeLineInfo(Source source) {
+    return baseContext.computeLineInfo(source);
+  }
+
+  @override
+  CompilationUnit computeResolvableCompilationUnit(Source source) {
+    return baseContext.computeResolvableCompilationUnit(source);
+  }
+
+  @override
+  CancelableFuture<CompilationUnit>
+      computeResolvedCompilationUnitAsync(Source source, Source librarySource) {
+    return baseContext.computeResolvedCompilationUnitAsync(
+        source,
+        librarySource);
+  }
+
+  @override
+  void dispose() {
+    baseContext.dispose();
+  }
+
+  @override
+  CompilationUnit ensureAnyResolvedDartUnit(Source source) {
+    return baseContext.ensureAnyResolvedDartUnit(source);
+  }
+
+  @override
+  bool exists(Source source) {
+    return baseContext.exists(source);
+  }
+
+  @override
+  CacheEntry getCacheEntry(AnalysisTarget target) {
+    return entryMap.putIfAbsent(target, () => new CacheEntry());
+  }
+
+  @override
+  CompilationUnitElement getCompilationUnitElement(Source unitSource,
+      Source librarySource) {
+    return baseContext.getCompilationUnitElement(unitSource, librarySource);
+  }
+
+  @override
+  TimestampedData<String> getContents(Source source) {
+    return baseContext.getContents(source);
+  }
+
+  @override
+  InternalAnalysisContext getContextFor(Source source) {
+    return baseContext.getContextFor(source);
+  }
+
+  @override
+  Element getElement(ElementLocation location) {
+    return baseContext.getElement(location);
+  }
+
+  @override
+  AnalysisErrorInfo getErrors(Source source) {
+    return baseContext.getErrors(source);
+  }
+
+  @override
+  HtmlElement getHtmlElement(Source source) {
+    return baseContext.getHtmlElement(source);
+  }
+
+  @override
+  List<Source> getHtmlFilesReferencing(Source source) {
+    return baseContext.getHtmlFilesReferencing(source);
+  }
+
+  @override
+  SourceKind getKindOf(Source source) {
+    return baseContext.getKindOf(source);
+  }
+
+  @override
+  List<Source> getLibrariesContaining(Source source) {
+    return baseContext.getLibrariesContaining(source);
+  }
+
+  @override
+  List<Source> getLibrariesDependingOn(Source librarySource) {
+    return baseContext.getLibrariesDependingOn(librarySource);
+  }
+
+  @override
+  List<Source> getLibrariesReferencedFromHtml(Source htmlSource) {
+    return baseContext.getLibrariesReferencedFromHtml(htmlSource);
+  }
+
+  @override
+  LibraryElement getLibraryElement(Source source) {
+    return baseContext.getLibraryElement(source);
+  }
+
+  @override
+  LineInfo getLineInfo(Source source) {
+    return baseContext.getLineInfo(source);
+  }
+
+  @override
+  int getModificationStamp(Source source) {
+    return baseContext.getModificationStamp(source);
+  }
+
+  @override
+  Namespace getPublicNamespace(LibraryElement library) {
+    return baseContext.getPublicNamespace(library);
+  }
+
+  @override
+  CompilationUnit getResolvedCompilationUnit(Source unitSource,
+      LibraryElement library) {
+    return baseContext.getResolvedCompilationUnit(unitSource, library);
+  }
+
+  @override
+  CompilationUnit getResolvedCompilationUnit2(Source unitSource,
+      Source librarySource) {
+    return baseContext.getResolvedCompilationUnit2(unitSource, librarySource);
+  }
+
+  @override
+  HtmlUnit getResolvedHtmlUnit(Source htmlSource) {
+    return baseContext.getResolvedHtmlUnit(htmlSource);
+  }
+
+  @override
+  bool handleContentsChanged(Source source, String originalContents,
+      String newContents, bool notify) {
+    return baseContext.handleContentsChanged(
+        source,
+        originalContents,
+        newContents,
+        notify);
+  }
+
+  @override
+  bool isClientLibrary(Source librarySource) {
+    return baseContext.isClientLibrary(librarySource);
+  }
+
+  @override
+  bool isServerLibrary(Source librarySource) {
+    return baseContext.isServerLibrary(librarySource);
+  }
+
+  @override
+  CompilationUnit parseCompilationUnit(Source source) {
+    return baseContext.parseCompilationUnit(source);
+  }
+
+  @override
+  HtmlUnit parseHtmlUnit(Source source) {
+    return baseContext.parseHtmlUnit(source);
+  }
+
+  @override
+  AnalysisResult performAnalysisTask() {
+    return baseContext.performAnalysisTask();
+  }
+
+  @override
+  void recordLibraryElements(Map<Source, LibraryElement> elementMap) {
+    baseContext.recordLibraryElements(elementMap);
+  }
+
+  @override
+  void removeListener(AnalysisListener listener) {
+    baseContext.removeListener(listener);
+  }
+
+  @override
+  CompilationUnit resolveCompilationUnit(Source unitSource,
+      LibraryElement library) {
+    return baseContext.resolveCompilationUnit(unitSource, library);
+  }
+
+  @override
+  CompilationUnit resolveCompilationUnit2(Source unitSource,
+      Source librarySource) {
+    return baseContext.resolveCompilationUnit2(unitSource, librarySource);
+  }
+
+  @override
+  HtmlUnit resolveHtmlUnit(Source htmlSource) {
+    return baseContext.resolveHtmlUnit(htmlSource);
+  }
+
+  @override
+  void setChangedContents(Source source, String contents, int offset,
+      int oldLength, int newLength) {
+    baseContext.setChangedContents(
+        source,
+        contents,
+        offset,
+        oldLength,
+        newLength);
+  }
+
+  @override
+  void setContents(Source source, String contents) {
+    baseContext.setContents(source, contents);
+  }
+
+  @override
+  void visitCacheItems(void callback(Source source, SourceEntry dartEntry,
+      DataDescriptor rowDesc, CacheState state)) {
+    baseContext.visitCacheItems(callback);
+  }
+}