Create a TypeDefiningElement interface.

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

Index: pkg/analyzer/lib/src/generated/element.dart
diff --git a/pkg/analyzer/lib/src/generated/element.dart b/pkg/analyzer/lib/src/generated/element.dart
index 9e7eeff77d39a069fc51ad89b4e669c122ab2da0..ce028ff5658a21c43cbb4f8edf6bc5e341943821 100644
--- a/pkg/analyzer/lib/src/generated/element.dart
+++ b/pkg/analyzer/lib/src/generated/element.dart
@@ -128,7 +128,7 @@ class CircularTypeImpl extends DynamicTypeImpl {
 /**
  * An element that represents a class.
  */
-abstract class ClassElement implements Element {
+abstract class ClassElement implements TypeDefiningElement {
   /**
    * An empty list of class elements.
    */
@@ -268,6 +268,7 @@ abstract class ClassElement implements Element {
   /**
    * Return the type defined by the class.
    */
+  @override

[Brian Wilkerson, 2015/06/08 18:22:24]

We generally remove the comments for overriding methods unless they contain new
information.

[Paul Berry, 2015/06/08 18:26:24]

Done.

   InterfaceType get type;
 
   /**
@@ -2154,7 +2155,7 @@ class DefaultParameterElementImpl extends ParameterElementImpl
 /**
  * The synthetic element representing the declaration of the type `dynamic`.
  */
-class DynamicElementImpl extends ElementImpl {
+class DynamicElementImpl extends ElementImpl implements TypeDefiningElement {
   /**
    * Return the unique instance of this class.
    */
@@ -2164,6 +2165,7 @@ class DynamicElementImpl extends ElementImpl {
   /**
    * The type defined by this element.
    */
+  @override
   DynamicTypeImpl type;
 
   /**
@@ -4371,7 +4373,7 @@ abstract class FunctionType implements ParameterizedType {
 /**
  * A function type alias (`typedef`).
  */
-abstract class FunctionTypeAliasElement implements Element {
+abstract class FunctionTypeAliasElement implements TypeDefiningElement {
   /**
    * An empty array of type alias elements.
    */
@@ -4397,6 +4399,7 @@ abstract class FunctionTypeAliasElement implements Element {
   /**
    * Return the type of function defined by this type alias.
    */
+  @override
   FunctionType get type;
 
   /**
@@ -9624,6 +9627,16 @@ class TopLevelVariableElementImpl extends PropertyInducingElementImpl
 }
 
 /**
+ * An element that defines a type.
+ */
+abstract class TypeDefiningElement implements Element {
+  /**
+   * Return the type defined by this element.
+   */
+  DartType get type;
+}
+
+/**
  * The abstract class `TypeImpl` implements the behavior common to objects
  * representing the declared type of elements in the element model.
  */