Create ClassElement.type lazily in ClassElementImpl and EnumElementImpl.

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 31 matching lines @@
    * this class.
    */
   List<PropertyAccessorElement> _accessors;
 
   /**
    * A list containing all of the fields contained in this class.
    */
   List<FieldElement> _fields;
 
   /**
-   * The type defined by the class.
-   */
-  @override
-  InterfaceType type;
-
-  /**
    * Initialize a newly created class element to have the given [name] at the
    * given [offset] in the file that contains the declaration of this element.
    */
   AbstractClassElementImpl(String name, int offset) : super(name, offset);
 
   /**
    * Initialize a newly created class element to have the given [name].
    */
   AbstractClassElementImpl.forNode(Identifier name) : super.forNode(name);
 
@@ skipping 366 matching lines @@
    * A list containing all of the type parameters defined for this class.
    */
   List<TypeParameterElement> _typeParameters = TypeParameterElement.EMPTY_LIST;
 
   /**
    * The superclass of the class, or `null` for [Object].
    */
   InterfaceType _supertype;
 
   /**
+   * The type defined by the class.
+   */
+  InterfaceType _type;
+
+  /**
    * A list containing all of the mixins that are applied to the class being
    * extended in order to derive the superclass of this class.
    */
   List<InterfaceType> _mixins;
 
   /**
    * A list containing all of the interfaces that are implemented by this class.
    */
   List<InterfaceType> _interfaces;
 
@@ skipping 416 matching lines @@
     }
     return _supertype;
   }
 
   void set supertype(InterfaceType supertype) {
     assert(_unlinkedClass == null);
     _supertype = supertype;
   }
 
   @override
+  InterfaceType get type {
+    if (_type == null) {
+      InterfaceTypeImpl type = new InterfaceTypeImpl(this);
+      type.typeArguments = typeParameterTypes;
+      _type = type;
+    }
+    return _type;
+  }
+
+  @override
   TypeParameterizedElementMixin get typeParameterContext => this;
 
   @override
   List<TypeParameterElement> get typeParameters {
     if (_unlinkedClass != null) {
       return super.typeParameters;
     }
     return _typeParameters;
   }
 
@@ skipping 2231 matching lines @@
 /**
  * An [AbstractClassElementImpl] which is an enum.
  */
 class EnumElementImpl extends AbstractClassElementImpl {
   /**
    * The unlinked representation of the enum in the summary.
    */
   final UnlinkedEnum _unlinkedEnum;
 
   /**
+   * The type defined by the enum.
+   */
+  InterfaceType _type;
+
+  /**
    * Initialize a newly created class element to have the given [name] at the
    * given [offset] in the file that contains the declaration of this element.
    */
   EnumElementImpl(String name, int offset)
       : _unlinkedEnum = null,
         super(name, offset);
 
   /**
    * Initialize a newly created class element to have the given [name].
    */
@@ skipping 120 matching lines @@
     if (_unlinkedEnum != null) {
       return _unlinkedEnum.nameOffset;
     }
     return super.nameOffset;
   }
 
   @override
   InterfaceType get supertype => context.typeProvider.objectType;
 
   @override
+  InterfaceType get type {
+    if (_type == null) {
+      InterfaceTypeImpl type = new InterfaceTypeImpl(this);
+      type.typeArguments = const <DartType>[];
+      _type = type;
+    }
+    return _type;
+  }
+
+  @override
   List<TypeParameterElement> get typeParameters =>
       const <TypeParameterElement>[];
 
   @override
   ConstructorElement get unnamedConstructor => null;
 
   @override
   void appendTo(StringBuffer buffer) {
     buffer.write('enum ');
     String name = displayName;
@@ skipping 4911 matching lines @@
 
   @override
   void visitElement(Element element) {
     int offset = element.nameOffset;
     if (offset != -1) {
       map[offset] = element;
     }
     super.visitElement(element);
   }
 }