Remove Element.users support.

pkg/analyzer/lib/src/generated/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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.element;
 
 import 'dart:collection';
@@ skipping 2375 matching lines @@
    * Return the resolved [CompilationUnit] that declares this [Element].
    *
    * This method is expensive, because resolved AST might have been already evicted from cache, so
    * parsing and resolving will be performed.
    *
    * @return the resolved [CompilationUnit], maybe `null` if synthetic [Element].
    */
   CompilationUnit get unit;
 
   /**
-   * Identifiers of the elements that use this elements.
-   */
-  IntSet get users;
-
-  /**
    * Use the given visitor to visit this element.
    *
    * @param visitor the visitor that will visit this element
    * @return the value returned by the visitor as a result of visiting this element
    */
   accept(ElementVisitor visitor);
 
   /**
-   * Remember the given [element] as a user of this element.
-   */
-  void addUser(Element element);
-
-  /**
    * Return the documentation comment for this element as it appears in the original source
    * (complete with the beginning and ending delimiters), or `null` if this element does not
    * have a documentation comment associated with it. This can be a long-running operation if the
    * information needed to access the comment is not cached.
    *
    * @return this element's documentation comment
    * @throws AnalysisException if the documentation comment could not be determined because the
    *           analysis could not be performed
    */
   String computeDocumentationComment();
@@ skipping 219 matching lines @@
    * A cached copy of the calculated hashCode for this element.
    */
   int _cachedHashCode;
 
   /**
    * A cached copy of the calculated location for this element.
    */
   ElementLocation _cachedLocation;
 
   /**
-   * Identifiers of the elements that use this elements.
-   *
-   * TODO(scheglov) consider this field lazily
-   */
-  final IntSet users = new IntSet();
-
-  /**
    * Initialize a newly created element to have the given name.
    *
    * @param name the name of this element
    * @param nameOffset the offset of the name of this element in the file that contains the
    *          declaration of this element
    */
   ElementImpl(String name, this._nameOffset) {
     this._name = StringUtilities.intern(name);
   }
 
@@ skipping 155 matching lines @@
       return true;
     }
     if (object == null || hashCode != object.hashCode) {
       return false;
     }
     return object.runtimeType == runtimeType &&
         (object as Element).location == location;
   }
 
   /**
-   * Remember the given [element] as a user of this element.
-   */
-  @override
-  void addUser(Element element) {
-    if (element != null) {
-      users.add(element.id);
-    }
-  }
-
-  /**
    * Append a textual representation of this element to the given [buffer].
    */
   void appendTo(StringBuffer buffer) {
     if (_name == null) {
       buffer.write("<unnamed ");
       buffer.write(runtimeType.toString());
       buffer.write(">");
     } else {
       buffer.write(_name);
     }
@@ skipping 5102 matching lines @@
 
   @override
   AstNode get node => _baseElement.node;
 
   @override
   Source get source => _baseElement.source;
 
   @override
   CompilationUnit get unit => _baseElement.unit;
 
-  /**
-   * Identifiers of the elements that use this elements.
-   */
-  @override
-  IntSet get users => _baseElement.users;
-
-  /**
-   * Remember the given [element] as a user of this element.
-   */
-  @override
-  void addUser(Element element) {
-    _baseElement.addUser(element);
-  }
-
   @override
   String computeDocumentationComment() =>
       _baseElement.computeDocumentationComment();
 
   @override
   Element getAncestor(Predicate<Element> predicate) =>
       baseElement.getAncestor(predicate);
 
   @override
   String getExtendedDisplayName(String shortName) =>
@@ skipping 524 matching lines @@
 
   @override
   Source get source => null;
 
   @override
   DartType get type => DynamicTypeImpl.instance;
 
   @override
   CompilationUnit get unit => null;
 
-  /**
-   * Identifiers of the elements that use this elements.
-   */
-  @override
-  IntSet get users => new IntSet();
-
   @override
   accept(ElementVisitor visitor) => visitor.visitMultiplyDefinedElement(this);
 
-  /**
-   * Remember the given [element] as a user of this element.
-   */
-  void addUser(Element element) {
-  }
-
   @override
   String computeDocumentationComment() => null;
 
   @override
   Element getAncestor(Predicate<Element> predicate) => null;
 
   @override
   String getExtendedDisplayName(String shortName) {
     if (shortName != null) {
       return shortName;
@@ skipping 2616 matching lines @@
     // bottom <: void (as bottom is a subtype of all types).
     // void <: dynamic (as dynamic is a supertype of all types)
     return identical(type, this) || type.isDynamic;
   }
 
   @override
   VoidTypeImpl substitute2(List<DartType> argumentTypes,
       List<DartType> parameterTypes) =>
       this;
 }