Fix for translation of \!= to \!identical(), but use == and \!= for Enum.

pkg/analyzer/test/generated/test_support.dart

 // Copyright (c) 2014, 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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.test_support;
 
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/java_junit.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/scanner.dart';
 import 'package:analyzer/src/generated/ast.dart' show AstNode, NodeLocator;
 import 'package:analyzer/src/generated/element.dart' show InterfaceType, MethodElement, PropertyAccessorElement;
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:unittest/unittest.dart' as _ut;
 
 /**
  * Instances of the class `GatheringErrorListener` implement an error listener that collects
  * all of the errors passed to it for later examination.
  */
 class GatheringErrorListener implements AnalysisErrorListener {
   /**
    * The source being parsed.
    */
-  String _rawSource;
+  final String _rawSource;
 
   /**
    * The source being parsed after inserting a marker at the beginning and end of the range of the
    * most recent error.
    */
   String _markedSource;
 
   /**
    * A list containing the errors that were collected.
    */
   List<AnalysisError> _errors = new List<AnalysisError>();
 
   /**
    * A table mapping sources to the line information for the source.
    */
   Map<Source, LineInfo> _lineInfoMap = new Map<Source, LineInfo>();
 
   /**
    * An empty array of errors used when no errors are expected.
    */
   static List<AnalysisError> _NO_ERRORS = new List<AnalysisError>(0);
 
   /**
    * Initialize a newly created error listener to collect errors.
    */
-  GatheringErrorListener() : super();
+  GatheringErrorListener() : this.con1(null);
 
   /**
    * Initialize a newly created error listener to collect errors.
    */
-  GatheringErrorListener.con1(String rawSource) {
-    this._rawSource = rawSource;
-    this._markedSource = rawSource;
+  GatheringErrorListener.con1(this._rawSource) {
+    this._markedSource = _rawSource;
   }
 
   /**
    * Add all of the errors recorded by the given listener to this listener.
    *
    * @param listener the listener that has recorded the errors to be added
    */
   void addAll(RecordingErrorListener listener) {
     for (AnalysisError error in listener.errors) {
       onError(error);
@@ skipping 130 matching lines @@
    * argument. The order in which the errors were gathered is ignored.
    *
    * @param expectedSeverities the severities of the errors that should have been gathered
    * @throws AssertionFailedError if a different number of errors have been gathered than were
    *           expected
    */
   void assertErrorsWithSeverities(List<ErrorSeverity> expectedSeverities) {
     int expectedErrorCount = 0;
     int expectedWarningCount = 0;
     for (ErrorSeverity severity in expectedSeverities) {
-      if (identical(severity, ErrorSeverity.ERROR)) {
+      if (severity == ErrorSeverity.ERROR) {
         expectedErrorCount++;
       } else {
         expectedWarningCount++;
       }
     }
     int actualErrorCount = 0;
     int actualWarningCount = 0;
     for (AnalysisError error in _errors) {
-      if (identical(error.errorCode.errorSeverity, ErrorSeverity.ERROR)) {
+      if (error.errorCode.errorSeverity == ErrorSeverity.ERROR) {
         actualErrorCount++;
       } else {
         actualWarningCount++;
       }
     }
     if (expectedErrorCount != actualErrorCount || expectedWarningCount != actualWarningCount) {
       JUnitTestCase.fail("Expected ${expectedErrorCount} errors and ${expectedWarningCount} warnings, found ${actualErrorCount} errors and ${actualWarningCount} warnings");
     }
   }
 
@@ skipping 620 matching lines @@
   Source resolveRelative(Uri uri) {
     throw new UnsupportedOperationException();
   }
   UriKind get uriKind {
     throw new UnsupportedOperationException();
   }
   TimestampedData<String> get contents {
     throw new UnsupportedOperationException();
   }
 }