AST changes necessary for generic method support

pkg/analyzer/lib/src/generated/engine.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;
 
 import 'dart:async';
@@ skipping 6098 matching lines @@
   @deprecated // Always true
   bool get enableDeferredLoading;
 
   /**
    * Return `true` if analysis is to include the new enum support.
    */
   @deprecated // Always true
   bool get enableEnum;
 
   /**
+   * Return `true` to enable generic methods (DEP 22).
+   */
+  bool get enableGenericMethods => null;
+
+  /**
    * Return `true` to enable null-aware operators (DEP 9).
    */
   bool get enableNullAwareOperators;
 
   /**
    * Return `true` to strictly follow the specification when generating
    * warnings on "call" methods (fixes dartbug.com/21938).
    */
   bool get enableStrictCallChecks;
 
@@ skipping 78 matching lines @@
    */
   int cacheSize = DEFAULT_CACHE_SIZE;
 
   /**
    * A flag indicating whether analysis is to generate dart2js related hint
    * results.
    */
   bool dart2jsHint = true;
 
   /**
+   * A flag indicating whether generic methods are to be supported (DEP 22).
+   */
+  bool enableGenericMethods = false;
+
+  /**
    * A flag indicating whether null-aware operators should be parsed (DEP 9).
    */
   bool enableNullAwareOperators = false;
 
   /**
    * A flag indicating whether analysis is to strictly follow the specification
    * when generating warnings on "call" methods (fixes dartbug.com/21938).
    */
   bool enableStrictCallChecks = false;
 
@@ skipping 3326 matching lines @@
   void internalPerform() {
     //
     // Then parse the token stream.
     //
     PerformanceStatistics.parse.makeCurrentWhile(() {
       RecordingErrorListener errorListener = new RecordingErrorListener();
       Parser parser = new Parser(source, errorListener);
       AnalysisOptions options = context.analysisOptions;
       parser.parseFunctionBodies =
           options.analyzeFunctionBodiesPredicate(source);
+      parser.parseGenericMethods = options.enableGenericMethods;
       _unit = parser.parseCompilationUnit(_tokenStream);
       _unit.lineInfo = lineInfo;
       AnalysisContext analysisContext = context;
       for (Directive directive in _unit.directives) {
         if (directive is PartOfDirective) {
           _containsPartOfDirective = true;
         } else {
           _containsNonPartOfDirective = true;
           if (directive is UriBasedDirective) {
             Source referencedSource = resolveDirective(
@@ skipping 2278 matching lines @@
     PendingFuture pendingFuture =
         new PendingFuture<T>(_context, source, computeValue);
     if (!pendingFuture.evaluate(sourceEntry)) {
       _context._pendingFutureSources
           .putIfAbsent(source, () => <PendingFuture>[])
           .add(pendingFuture);
     }
     return pendingFuture.future;
   }
 }