Fix for parsing default parameters.

pkg/analyzer/test/generated/parser_fasta_test.dart

 // Copyright (c) 2017, 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.
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart' as analyzer;
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/generated/parser.dart' as analyzer;
 import 'package:analyzer/src/generated/utilities_dart.dart';
@@ skipping 757 matching lines @@
     FormalParameterList list = parseFormalParameterList(parametersCode,
         inFunctionType: false, errorCodes: errorCodes);
     return list.parameters.single;
   }
 
   @override
   FormalParameterList parseFormalParameterList(String code,
       {bool inFunctionType: false,
       List<ErrorCode> errorCodes: const <ErrorCode>[]}) {
     return _runParser(
-            code, (parser) => parser.parseFormalParameters, errorCodes)
-        as FormalParameterList;
+        code,
+        (parser) => (fasta.Token token) {
+              return parser.parseFormalParameters(token,
+                  inFunctionType: inFunctionType);
+            },
+        errorCodes) as FormalParameterList;
   }
 
   @override
   CompilationUnitMember parseFullCompilationUnitMember() {
     return _parserProxy._run((parser) => parser.parseTopLevelDeclaration)
         as CompilationUnitMember;
   }
 
   @override
   Directive parseFullDirective() {
@@ skipping 192 matching lines @@
 
   @override
   @failingTest
   void test_parseFormalParameter_type_function() {
     // TODO(scheglov): Unhandled event: FunctionTypedFormalParameter
     super.test_parseFormalParameter_type_function();
   }
 
   @override
   @failingTest
-  void test_parseFormalParameterList_normal_named_inFunctionType() {
-    // TODO(scheglov): Unhandled event: OptionalFormalParameters
-    super.test_parseFormalParameterList_normal_named_inFunctionType();
-  }
-
-  @override
-  @failingTest
   void test_parseFormalParameterList_prefixedType_partial() {
     // TODO(scheglov): Unimplemented: errors
     super.test_parseFormalParameterList_prefixedType_partial();
   }
 
   @override
   @failingTest
   void test_parseFormalParameterList_prefixedType_partial2() {
     // TODO(scheglov): Unimplemented: errors
     super.test_parseFormalParameterList_prefixedType_partial2();
@@ skipping 59 matching lines @@
     super.test_parseNormalFormalParameter_function_void_typeParameterComments();
   }
 
   @override
   @failingTest
   void test_parseNormalFormalParameter_function_void_typeParameters_nullable() {
     // TODO(scheglov): Not implemented: Nnbd
     super
         .test_parseNormalFormalParameter_function_void_typeParameters_nullable();
   }
-
-  @override
-  @failingTest
-  void test_parseNormalFormalParameter_simple_noName() {
-    // TODO(scheglov): in function type, type instead of parameter name
-    super.test_parseNormalFormalParameter_simple_noName();
-  }
 }
 
 /**
  * Proxy implementation of [KernelClassElement] used by Fasta parser tests.
  *
  * Any element used as a type name is presumed to refer to an instance of this
  * class.
  */
 class InterfaceTypeProxy implements KernelInterfaceType {
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
@@ skipping 333 matching lines @@
   void test_parseTypeAlias_genericFunction_typeParameters_voidReturnType() {
     super.test_parseTypeAlias_genericFunction_typeParameters_voidReturnType();
   }
 
   @override
   @failingTest
   void test_parseTypeAlias_genericFunction_voidReturnType() {
     super.test_parseTypeAlias_genericFunction_voidReturnType();
   }
 }