map fasta error codes to analyzer

pkg/analyzer/lib/src/fasta/ast_builder.dart

 // Copyright (c) 2016, 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 fasta.analyzer.ast_builder;
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/ast_factory.dart' show AstFactory;
 import 'package:analyzer/dart/ast/standard_ast_factory.dart' as standard;
 import 'package:analyzer/dart/ast/token.dart' show Token, TokenType;
@@ skipping 1888 matching lines @@
     if (scanner.hasErrors) {
       return null;
     }
     return firstToken;
   }
 
   @override
   void addCompileTimeError(Message message, int charOffset) {
     Code code = message.code;
     Map<String, dynamic> arguments = message.arguments;
+
+    String stringOrTokenLexeme() {
+      var text = arguments['string'];
+      if (text == null) {
+        Token token = arguments['token'];
+        if (token != null) {
+          text = token.lexeme;
+        }
+      }
+      return text;
+    }
+
     switch (code.analyzerCode) {
       case "EXPECTED_TYPE_NAME":
         errorReporter?.reportErrorForOffset(
             ParserErrorCode.EXPECTED_TYPE_NAME, charOffset, 1);
         return;
       case "NATIVE_CLAUSE_SHOULD_BE_ANNOTATION":
         if (!allowNativeClause) {
           errorReporter?.reportErrorForOffset(
               ParserErrorCode.NATIVE_CLAUSE_SHOULD_BE_ANNOTATION,
               charOffset,
               1);
         }
         return;
       case "EXPECTED_STRING_LITERAL":
         errorReporter?.reportErrorForOffset(
             ParserErrorCode.EXPECTED_STRING_LITERAL, charOffset, 1);
         return;
+      case "EXTRANEOUS_MODIFIER":
+        String text = stringOrTokenLexeme();
+        errorReporter?.reportErrorForOffset(ParserErrorCode.EXTRANEOUS_MODIFIER,
+            charOffset, text.length, [text]);
+        return;
       case "UNEXPECTED_TOKEN":
-        String text = arguments['string'];
-        if (text == null) {
-          Token token = arguments['token'];
-          if (token != null) {
-            text = token.lexeme;
-          }
-        }
+        String text = stringOrTokenLexeme();
         if (text == ';') {
           errorReporter?.reportErrorForOffset(
               ParserErrorCode.EXPECTED_TOKEN, charOffset, text.length, [text]);
         } else {
-          errorReporter?.reportErrorForOffset(
-              ParserErrorCode.UNEXPECTED_TOKEN, charOffset, 1, [text]);
+          errorReporter?.reportErrorForOffset(ParserErrorCode.UNEXPECTED_TOKEN,
+              charOffset, text.length, [text]);
         }
         return;
       default:
       // fall through
     }
     library.addCompileTimeError(message, charOffset, uri);
   }
 }
 
 /// Data structure placed on the stack to represent a class body.
@@ skipping 94 matching lines @@
       } else if (identical('var', s)) {
         finalConstOrVarKeyword = token;
       } else if (identical('covariant', s)) {
         covariantKeyword = token;
       } else {
         unhandled("$s", "modifier", token.charOffset, null);
       }
     }
   }
 }