[migrate] element_text.dart

Change-Id: I5dad2e9b916794a7f75625739c968cc48f4c05f6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/417080
Commit-Queue: Brian Wilkerson <[email protected]>
Reviewed-by: Konstantin Shcheglov <[email protected]>

Author: bwilkerson

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

@@ -1496,7 +1496,7 @@ class ConstructorElementImpl extends ExecutableElementImpl
   }
 
   @override
-  Element get nonSynthetic {
+  ElementImpl get nonSynthetic {
     return isSynthetic ? enclosingElement3 : this;
   }
 
@@ -3033,7 +3033,7 @@ abstract class ElementImpl implements Element, ElementOrMember {
   }
 
   @override
-  Element get nonSynthetic => this;
+  ElementImpl get nonSynthetic => this;
 
   @override
   AnalysisSession? get session {
@@ -8303,7 +8303,7 @@ class MethodElementImpl extends ExecutableElementImpl
   }
 
   @override
-  Element get nonSynthetic {
+  ElementImpl get nonSynthetic {
     if (isSynthetic && enclosingElement3 is EnumElementImpl) {
       return enclosingElement3;
     }
@@ -9461,7 +9461,7 @@ class ParameterElementImpl_ofImplicitSetter extends ParameterElementImpl {
   }
 
   @override
-  Element get nonSynthetic {
+  ElementImpl get nonSynthetic {
     return setter.variable2;
   }
 
@@ -10031,7 +10031,7 @@ class PropertyAccessorElementImpl_ImplicitGetter extends GetterFragmentImpl {
   String? get name2 => variable2.name2;
 
   @override
-  Element get nonSynthetic {
+  ElementImpl get nonSynthetic {
     if (!variable2.isSynthetic) {
       return variable2;
     }
@@ -10096,7 +10096,7 @@ class PropertyAccessorElementImpl_ImplicitSetter extends SetterFragmentImpl {
   String? get name2 => variable2.name2;
 
   @override
-  Element get nonSynthetic => variable2;
+  ElementImpl get nonSynthetic => variable2;
 
   @override
   int get offset => variable2.offset;
@@ -10245,7 +10245,7 @@ abstract class PropertyInducingElementImpl
       thisOrAncestorOfType<CompilationUnitElementImpl>()!;
 
   @override
-  Element get nonSynthetic {
+  ElementImpl get nonSynthetic {
     if (isSynthetic) {
       if (enclosingElement3 is EnumElementImpl) {
         // TODO(scheglov): remove 'index'?

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

@@ -147,6 +147,8 @@ extension ConstructorElementMixinExtension on ConstructorElementMixin {
       _ => throw UnsupportedError('Unsupported type: $runtimeType'),
     };
   }
+
+  ElementImpl? get enclosingElementImpl => enclosingElement3 as ElementImpl?;
 }
 
 extension Element2Extension on Element2 {
@@ -267,9 +269,13 @@ extension Element2OrNullExtension on Element2? {
         throw UnsupportedError('Unsupported type: $runtimeType');
     }
   }
+
+  ElementImpl? get asElementImpl => asElement as ElementImpl;
 }
 
 extension ElementImplExtension on ElementImpl {
+  ElementImpl? get enclosingElementImpl => enclosingElement3 as ElementImpl?;
+
   AnnotationImpl annotationAst(int index) {
     return metadata[index].annotationAst;
   }