Resynthesize field formal parameters from Kernel.

pkg/analyzer/test/src/summary/resynthesize_common.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 test.src.serialization.elements_test;
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
@@ skipping 1815 matching lines @@
 }
 ''');
     }
   }
 
   test_class_constructor_field_formal_no_matching_field() async {
     // This is a compile-time error but it should still analyze consistently.
     var library =
         await checkLibrary('class C { C(this.x); }', allowErrors: true);
     if (isStrongMode) {
-      checkElementText(library, r'''
+      if (isSharedFrontEnd) {
+        // Kernel does not store 'isFieldFormal' flag explicitly.
+        // We infer it from presence of the corresponding FieldInitializer.
+        // But if there is no field, there is no FieldInitializer.
+        checkElementText(library, r'''
+class C {
+  C(dynamic x);
+}
+''');
+      } else {
+        checkElementText(library, r'''
 class C {
   C(dynamic this.x);
 }
 ''');
+      }
     } else {
       checkElementText(library, r'''
 class C {
   C(dynamic this.x);
 }
 ''');
     }
   }
 
   test_class_constructor_field_formal_typed_dynamic() async {
@@ skipping 7945 matching lines @@
   }
 
   test_metadata_fieldFormalParameter_withDefault() async {
     var library = await checkLibrary(
         'const a = null; class C { var x; C([@a this.x = null]); }');
     if (isStrongMode) {
       checkElementText(library, r'''
 class C {
   dynamic x;
   C([@
-        a/*location: test.dart;a?*/ dynamic this.x = null]);
+        a/*location: test.dart;a?*/ dynamic this.x]);
 }
 const dynamic a = null;
 ''');
     } else {
       checkElementText(library, r'''
 class C {
   dynamic x;
   C([@
-        a/*location: test.dart;a?*/ dynamic this.x = null]);
+        a/*location: test.dart;a?*/ dynamic this.x]);
 }
 const dynamic a = null;
 ''');
     }
   }
 
   test_metadata_functionDeclaration_function() async {
     var library = await checkLibrary('''
 const a = null;
 @a
@@ skipping 80 matching lines @@
 ''');
     }
   }
 
   test_metadata_functionTypedFormalParameter_withDefault() async {
     var library = await checkLibrary('const a = null; f([@a g() = null]) {}');
     if (isStrongMode) {
       checkElementText(library, r'''
 const dynamic a = null;
 dynamic f([@
-        a/*location: test.dart;a?*/ () → dynamic g = null]) {}
+        a/*location: test.dart;a?*/ () → dynamic g]) {}
 ''');
     } else {
       checkElementText(library, r'''
 const dynamic a = null;
 dynamic f([@
-        a/*location: test.dart;a?*/ () → dynamic g = null]) {}
+        a/*location: test.dart;a?*/ () → dynamic g]) {}
 ''');
     }
   }
 
   test_metadata_importDirective() async {
     addLibrarySource('/foo.dart', 'const b = null;');
     var library = await checkLibrary('@a import "foo.dart"; const a = b;');
     if (isStrongMode) {
       checkElementText(library, r'''
 @
@@ skipping 215 matching lines @@
 ''');
     }
   }
 
   test_metadata_simpleFormalParameter_withDefault() async {
     var library = await checkLibrary('const a = null; f([@a x = null]) {}');
     if (isStrongMode) {
       checkElementText(library, r'''
 const dynamic a = null;
 dynamic f([@
-        a/*location: test.dart;a?*/ dynamic x = null]) {}
+        a/*location: test.dart;a?*/ dynamic x]) {}
 ''');
     } else {
       checkElementText(library, r'''
 const dynamic a = null;
 dynamic f([@
-        a/*location: test.dart;a?*/ dynamic x = null]) {}
+        a/*location: test.dart;a?*/ dynamic x]) {}
 ''');
     }
   }
 
   test_metadata_topLevelVariableDeclaration() async {
     var library = await checkLibrary('const a = null; @a int v;');
     if (isStrongMode) {
       checkElementText(library, r'''
 const dynamic a = null;
 @
@@ skipping 2995 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }