Remove ExecutableElement.labels altogether.

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

 // Copyright (c) 2014, 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 analyzer.src.dart.element.element;
 
 import 'dart:collection';
 import 'dart:math' show min;
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 3543 matching lines @@
    */
   final UnlinkedExecutable serializedExecutable;
 
   /**
    * A list containing all of the functions defined within this executable
    * element.
    */
   List<FunctionElement> _functions;
 
   /**
-   * A list containing all of the labels defined within this executable element.
-   */
-  List<LabelElement> _labels;
-
-  /**
    * A list containing all of the parameters defined by this executable element.
    */
   List<ParameterElement> _parameters;
 
   /**
    * The declared return type of this executable element.
    */
   DartType _declaredReturnType;
 
   /**
@@ skipping 159 matching lines @@
     return hasModifier(Modifier.GENERATOR);
   }
 
   @override
   bool get isOperator => false;
 
   @override
   bool get isSynchronous => !isAsynchronous;
 
   @override
-  List<LabelElement> get labels {
-    if (serializedExecutable != null) {
-      _labels ??= LabelElementImpl.resynthesizeList(
-          this, serializedExecutable.localLabels);
-    }
-    return _labels ?? const <LabelElement>[];
-  }
-
-  /**
-   * Set the labels defined within this executable element to the given
-   * [labels].
-   */
-  void set labels(List<LabelElement> labels) {
-    _assertNotResynthesized(serializedExecutable);
-    for (LabelElement label in labels) {
-      (label as LabelElementImpl).enclosingElement = this;
-    }
-    this._labels = labels;
-  }
-
-  @override
   List<ElementAnnotation> get metadata {
     if (serializedExecutable != null) {
       return _metadata ??=
           _buildAnnotations(enclosingUnit, serializedExecutable.annotations);
     }
     return super.metadata;
   }
 
   @override
   String get name {
@@ skipping 138 matching lines @@
   }
 
   @override
   ElementImpl getChild(String identifier) {
     for (FunctionElement function in _functions) {
       FunctionElementImpl functionImpl = function;
       if (functionImpl.identifier == identifier) {
         return functionImpl;
       }
     }
-    for (LabelElement label in _labels) {
-      LabelElementImpl labelImpl = label;
-      if (labelImpl.identifier == identifier) {
-        return labelImpl;
-      }
-    }
     for (ParameterElement parameter in parameters) {
       ParameterElementImpl parameterImpl = parameter;
       if (parameterImpl.identifier == identifier) {
         return parameterImpl;
       }
     }
     return null;
   }
 
   @override
   void visitChildren(ElementVisitor visitor) {
     super.visitChildren(visitor);
     _safelyVisitPossibleChild(returnType, visitor);
     safelyVisitChildren(typeParameters, visitor);
     safelyVisitChildren(parameters, visitor);
     safelyVisitChildren(functions, visitor);
-    safelyVisitChildren(labels, visitor);
   }
 }
 
 /**
  * A concrete implementation of an [ExportElement].
  */
 class ExportElementImpl extends UriReferencedElementImpl
     implements ExportElement {
   /**
    * The unlinked representation of the export in the summary.
@@ skipping 5007 matching lines @@
 
   @override
   DartObject computeConstantValue() => null;
 
   @override
   void visitChildren(ElementVisitor visitor) {
     super.visitChildren(visitor);
     _initializer?.accept(visitor);
   }
 }