First step of support for parsing and ignoring generic methods.

pkg/compiler/lib/src/parser/diet_parser_task.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 dart2js.parser.diet.task;
 
 import '../common.dart';
 import '../common/tasks.dart' show
     CompilerTask;
 import '../compiler.dart' show
     Compiler;
 import '../elements/elements.dart' show
     CompilationUnitElement;
 import '../tokens/token.dart' show
     Token;
 
 import 'listener.dart' show
     ParserError;
 import 'element_listener.dart' show
     ElementListener,
     ScannerOptions;
 import 'partial_parser.dart' show
     PartialParser;
 
 class DietParserTask extends CompilerTask {
   final bool _enableConditionalDirectives;
+  final bool _enableGenericMethods;
 
-  DietParserTask(Compiler compiler, {bool enableConditionalDirectives})
+  DietParserTask(Compiler compiler,
+      {bool enableConditionalDirectives: false,

[Johnni Winther, 2016/02/29 10:18:45]

Ditto

[eernst, 2016/03/09 16:28:13]

Done, as described in comment for 'compiler.dart'.

+       bool enableGenericMethods: false})
       : this._enableConditionalDirectives = enableConditionalDirectives,
+        this._enableGenericMethods = enableGenericMethods,
         super(compiler);
 
   final String name = 'Diet Parser';
 
   dietParse(CompilationUnitElement compilationUnit, Token tokens) {
     measure(() {
       Function idGenerator = compiler.getNextFreeClassId;
       ScannerOptions scannerOptions = new ScannerOptions(
           canUseNative: compiler.backend.canLibraryUseNative(
               compilationUnit.library));
       ElementListener listener = new ElementListener(
           scannerOptions, compiler.reporter, compilationUnit, idGenerator);
       PartialParser parser = new PartialParser(
-          listener, enableConditionalDirectives: _enableConditionalDirectives);
+          listener,
+          enableConditionalDirectives: _enableConditionalDirectives,
+          enableGenericMethods: _enableGenericMethods);
       try {
         parser.parseUnit(tokens);
       } on ParserError catch(_) {
         assert(invariant(compilationUnit, compiler.compilationFailed));
       }
     });
   }
 }