Elements. Deprecate FunctionTypedElement.

Change-Id: I76ffe0f5812dbc1c71e6fb609b1b8c23fc35a9f4
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/418907
Reviewed-by: Paul Berry <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>

Author: scheglov

pkg/analyzer/api.txt

@@ -3316,12 +3316,12 @@ package:analyzer/dart/element/element.dart:
     new (constructor: FunctionElement Function())
     isDartCoreIdentical (getter: bool)
     isEntryPoint (getter: bool)
-  FunctionTypedElement (class extends Object implements TypeParameterizedElement):
+  FunctionTypedElement (class extends Object implements TypeParameterizedElement, deprecated):
     new (constructor: FunctionTypedElement Function())
     parameters (getter: List<ParameterElement>)
     returnType (getter: DartType)
     type (getter: FunctionType)
-  GenericFunctionTypeElement (class extends Object implements FunctionTypedElement):
+  GenericFunctionTypeElement (class extends Object implements FunctionTypedElement, deprecated):
     new (constructor: GenericFunctionTypeElement Function())
   HideElementCombinator (class extends Object implements NamespaceCombinator):
     new (constructor: HideElementCombinator Function())
@@ -3501,7 +3501,7 @@ package:analyzer/dart/element/element.dart:
     isExternal (getter: bool)
   TypeAliasElement (class extends Object implements TypeParameterizedElement, TypeDefiningElement):
     new (constructor: TypeAliasElement Function())
-    aliasedElement (getter: Element?)
+    aliasedElement (getter: Element?, deprecated)
     aliasedType (getter: DartType)
     enclosingElement3 (getter: CompilationUnitElement, deprecated)
     isAugmentation (getter: bool)

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

@@ -1284,6 +1284,7 @@ abstract class FunctionElement implements ExecutableElement, LocalElement {
 /// This also provides convenient access to the parameters and return type.
 ///
 /// Clients may not extend, implement or mix-in this class.
+@Deprecated('Use FunctionTypedElement2 instead')
 abstract class FunctionTypedElement implements TypeParameterizedElement {
   /// The parameters defined by this executable element.
   List<ParameterElement> get parameters;
@@ -1298,6 +1299,7 @@ abstract class FunctionTypedElement implements TypeParameterizedElement {
 /// The pseudo-declaration that defines a generic function type.
 ///
 /// Clients may not extend, implement, or mix-in this class.
+@Deprecated('Use GenericFunctionTypeElement2 instead')
 abstract class GenericFunctionTypeElement implements FunctionTypedElement {}
 
 /// A combinator that causes some of the names in a namespace to be hidden when
@@ -2190,6 +2192,7 @@ abstract class TypeAliasElement
   /// For example it could be [GenericFunctionTypeElement].
   ///
   /// If there is no structure, return `null`.
+  @Deprecated(elementModelDeprecationMsg)
   Element? get aliasedElement;
 
   /// The aliased type.

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

@@ -5179,7 +5179,10 @@ sealed class FunctionElementImpl extends ExecutableElementImpl
 ///
 /// Clients may not extend, implement or mix-in this class.
 abstract class FunctionTypedElementImpl
-    implements _ExistingElementImpl, FunctionTypedElement {
+    implements
+        _ExistingElementImpl,
+        // ignore:deprecated_member_use_from_same_package
+        FunctionTypedElement {
   @override
   List<ParameterElementImpl> get parameters;
 
@@ -5206,8 +5209,10 @@ abstract class FunctionTypedElementImpl2 extends TypeParameterizedElementImpl2
 ///
 /// Clients may not extend, implement or mix-in this class.
 class GenericFunctionTypeElementImpl extends _ExistingElementImpl
-    with TypeParameterizedElementMixin
+    with
+        TypeParameterizedElementMixin
     implements
+        // ignore:deprecated_member_use_from_same_package
         GenericFunctionTypeElement,
         FunctionTypedElementImpl,
         GenericFunctionTypeFragment {