Use packages dart_parser, dart_scanner, and compiler_util.

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 ParsingContext, Resolution;
 import '../elements/resolution_types.dart' show ResolutionDynamicType;
 import '../elements/elements.dart'
@@ skipping 13 matching lines @@
         ConstructorElementX,
         DeclarationSite,
         ElementX,
         GetterElementX,
         MetadataAnnotationX,
         MethodElementX,
         SetterElementX,
         TypedefElementX,
         VariableList;
 import '../elements/visitor.dart' show ElementVisitor;
-import '../tokens/token.dart' show Token;
-import '../tokens/token_constants.dart' as Tokens show EOF_TOKEN;
+import 'package:dart_scanner/dart_scanner.dart' show Token;
+import 'package:dart_scanner/dart_scanner.dart' as Tokens show EOF_TOKEN;
 import '../tree/tree.dart';
-import 'class_element_parser.dart' show ClassElementParser;
-import 'listener.dart' show ParserError;
+import 'package:dart_parser/dart_parser.dart'
+    show ClassMemberParser, Parser, ParserError;
 import 'member_listener.dart' show MemberListener;
 import 'node_listener.dart' show NodeListener;
-import 'parser.dart' show Parser;
 
 abstract class PartialElement implements DeclarationSite {
   Token beginToken;
   Token endToken;
 
   bool hasParseError = false;
 
   bool get isMalformed => hasParseError;
 
   DeclarationSite get declarationSite => this;
@@ skipping 315 matching lines @@
     return cachedNode;
   }
 
   ClassNode parseNode(ParsingContext 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);
+        Parser parser = new ClassMemberParser(listener);
         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}"));
+          assert(invariant(reporter.spanFromToken(beginToken),
+                  listener.nodes.isEmpty,
+                  message: "Non-empty listener stack: ${listener.nodes}"));
         } on ParserError {
           // TODO(ahe): Often, a ParserError is thrown while parsing the class
           // body. This means that the stack actually contains most of the
           // information synthesized below. Consider rewriting the parser so
           // endClassDeclaration is called before parsing the class body.
           Identifier name = new Identifier(findMyName(beginToken));
           NodeList typeParameters = null;
           Node supertype = null;
           NodeList interfaces = listener.makeNodeList(0, null, null, ",");
           Token extendsKeyword = null;
@@ skipping 42 matching lines @@
       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));
       } on ParserError catch (e) {
         partial.hasParseError = true;
-        return new ErrorNode(element.position, e.reason);
+        return new ErrorNode(element.position, e.kind, e.arguments);
       }
       Node node = listener.popNode();
       assert(listener.nodes.isEmpty);
       return node;
     });
   });
 }