Elements. Remove ConstLocalVariableFragmentImpl, use LocalVariableFragmentImpl.

Change-Id: Ieab58cadbffbc5fea60f78f5f07a08662cf69d87
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/438600
Reviewed-by: Paul Berry <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>

Author: scheglov

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

@@ -728,17 +728,6 @@ class ConstantInitializerImpl implements ConstantInitializer {
   }
 }
 
-/// A `LocalVariableElement` for a local 'const' variable that has an
-/// initializer.
-class ConstLocalVariableFragmentImpl extends LocalVariableFragmentImpl {
-  /// Initialize a newly created local variable element to have the given [name]
-  /// and [offset].
-  ConstLocalVariableFragmentImpl({
-    required super.name2,
-    required super.nameOffset,
-  });
-}
-
 class ConstructorElementImpl extends ExecutableElementImpl
     with
         FragmentedExecutableElementMixin<ConstructorFragmentImpl>,

pkg/analyzer/lib/src/dart/resolver/resolution_visitor.dart

@@ -1529,18 +1529,10 @@ class ResolutionVisitor extends RecursiveAstVisitor<void> {
       variable as VariableDeclarationImpl;
       var nameToken = variable.name;
 
-      LocalVariableFragmentImpl fragment;
-      if (isConst && variable.initializer != null) {
-        fragment = ConstLocalVariableFragmentImpl(
-          name2: _getFragmentName(nameToken),
-          nameOffset: nameToken.offset,
-        );
-      } else {
-        fragment = LocalVariableFragmentImpl(
-          name2: _getFragmentName(nameToken),
-          nameOffset: nameToken.offset,
-        );
-      }
+      var fragment = LocalVariableFragmentImpl(
+        name2: _getFragmentName(nameToken),
+        nameOffset: nameToken.offset,
+      );
       variable.declaredFragment = fragment;
       _elementHolder.enclose(fragment);
       _define(fragment.element);

pkg/analyzer/lib/src/dart/resolver/variable_declaration_resolver.dart

@@ -77,7 +77,7 @@ class VariableDeclarationResolver {
     // Initializers of top-level variables and fields are already included
     // into elements during linking.
     if (element is LocalVariableElementImpl && element.isConst) {
-      var fragment = element.firstFragment as ConstLocalVariableFragmentImpl;
+      var fragment = element.firstFragment;
       fragment.constantInitializer = initializer;
     }