Elements. Migrate src/dart/element/scope.dart

Change-Id: Id5f07a688138f463e307cb145d56cb286ba85cac
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/407220
Reviewed-by: Brian Wilkerson <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>

Author: scheglov

pkg/analyzer/lib/dart/element/element2.dart

@@ -2561,6 +2561,10 @@ abstract class SuperFormalParameterFragment implements FormalParameterFragment {
 /// Clients may not extend, implement or mix-in this class.
 abstract class TopLevelFunctionElement
     implements ExecutableElement2, HasSinceSdkVersion {
+  /// The name of the synthetic function defined for libraries that are
+  /// deferred.
+  static final String LOAD_LIBRARY_NAME = "loadLibrary";
+
   @override
   TopLevelFunctionElement get baseElement;
 

pkg/analyzer/lib/dart/element/scope.dart

@@ -6,6 +6,7 @@
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/element2.dart';
+import 'package:analyzer/src/utilities/extensions/element.dart';
 
 /// Scopes are used to resolve names to elements.
 ///
@@ -23,8 +24,10 @@ abstract class Scope {
 ///
 /// Clients may not extend, implement or mix-in this class.
 abstract class ScopeLookupResult {
-  Element? get getter;
+  Element? get getter => getter2?.asElement;
   Element2? get getter2;
-  Element? get setter;
+
+  Element? get setter => setter2?.asElement;
+
   Element2? get setter2;
 }

pkg/analyzer/lib/src/dart/ast/extensions.dart

@@ -279,14 +279,14 @@ extension IdentifierImplExtension on IdentifierImpl {
         name2: self.identifier.token,
         typeArguments: typeArguments,
         question: question,
-      )..element2 = self.identifier.staticElement.asElement2;
+      )..element2 = self.identifier.staticElement?.asElement2;
     } else if (self is SimpleIdentifierImpl) {
       return NamedTypeImpl(
         importPrefix: null,
         name2: self.token,
         typeArguments: typeArguments,
         question: question,
-      )..element2 = self.staticElement.asElement2;
+      )..element2 = self.staticElement?.asElement2;
     } else {
       throw UnimplementedError('(${self.runtimeType}) $self');
     }

pkg/analyzer/lib/src/dart/element/element.dart

@@ -683,6 +683,10 @@ class ClassElementImpl2 extends InterfaceElementImpl2
   @override
   bool get isDartCoreObject => firstFragment.isDartCoreObject;
 
+  bool get isDartCoreRecord {
+    return name3 == 'Record' && library2.isDartCore;
+  }
+
   bool get isEnumLike {
     // Must be a concrete class.
     if (isAbstract) {
@@ -844,14 +848,12 @@ class CompilationUnitElementImpl extends UriReferencedElementImpl
 
   @override
   List<ExtensionElement> get accessibleExtensions {
-    return scope.accessibleExtensions;
+    return scope.accessibleExtensions.map((e) => e.asElement).toList();
   }
 
   @override
   List<ExtensionElement2> get accessibleExtensions2 {
-    return scope.accessibleExtensions
-        .map((element) => element.augmented as ExtensionElement2)
-        .toList();
+    return scope.accessibleExtensions;
   }
 
   @override
@@ -9851,6 +9853,10 @@ class PrefixElementImpl2 extends ElementImpl2 implements PrefixElement2 {
     return asElement.scope;
   }
 
+  set scope(PrefixScope value) {
+    asElement.scope = value;
+  }
+
   @override
   T? accept2<T>(ElementVisitor2<T> visitor) {
     return visitor.visitPrefixElement(this);