First step of support for parsing and ignoring generic methods.

pkg/compiler/lib/src/parser/partial_elements.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.partial_elements;
 
 import '../common.dart';
 import '../common/resolution.dart' show
     Parsing,
     Resolution;
@@ skipping 33 matching lines @@
     StringToken,
     Token,
     UnmatchedToken,
     UnterminatedToken;
 import '../tokens/token_constants.dart' as Tokens show
     EOF_TOKEN;
 import '../tree/tree.dart';
 
 import 'class_element_parser.dart' show
     ClassElementParser;
+import 'element_listener.dart' show
+    ParserOptions;
 import 'parser.dart' show
     Parser;
 import 'listener.dart' show
     ParserError;
 import 'member_listener.dart' show
     MemberListener;
 import 'node_listener.dart' show
     NodeListener;
 
 abstract class PartialElement implements DeclarationSite {
@@ skipping 356 matching lines @@
     return cachedNode;
   }
 
   ClassNode parseNode(Parsing parsing) {
     if (cachedNode != null) return cachedNode;
     DiagnosticReporter reporter = parsing.reporter;
     reporter.withCurrentElement(this, () {
       parsing.measure(() {
         MemberListener listener = new MemberListener(
             parsing.getScannerOptionsFor(this), reporter, this);
-        Parser parser = new ClassElementParser(listener);
+        ParserOptions options = parsing.parserOptions;
+        Parser parser = new ClassElementParser(listener,
+            enableConditionalDirectives: options.enableConditionalDirectives,
+            enableGenericMethods: options.enableGenericMethods);
         try {
           Token token = parser.parseTopLevelDeclaration(beginToken);
           assert(identical(token, endToken.next));
           cachedNode = listener.popNode();
           assert(
               invariant(
                   beginToken, listener.nodes.isEmpty,
                   message: "Non-empty listener stack: ${listener.nodes}"));
         } on ParserError {
           // TODO(ahe): Often, a ParserError is thrown while parsing the class
@@ skipping 43 matching lines @@
   return parsing.measure(() {
     return reporter.withCurrentElement(element, () {
       CompilationUnitElement unit = element.compilationUnit;
       NodeListener listener = new NodeListener(
           parsing.getScannerOptionsFor(element), reporter, unit);
       listener.memberErrors = listener.memberErrors.prepend(false);
       try {
         if (partial.hasParseError) {
           listener.suppressParseErrors = true;
         }
-        doParse(new Parser(listener));
+        ParserOptions options = parsing.parserOptions;
+        doParse(new Parser(listener,
+            enableConditionalDirectives: options.enableConditionalDirectives,
+            enableGenericMethods: options.enableGenericMethods));
       } on ParserError catch (e) {
         partial.hasParseError = true;
         return new ErrorNode(element.position, e.reason);
       }
       Node node = listener.popNode();
       assert(listener.nodes.isEmpty);
       return node;
     });
   });
 }