Add a flag to the element model to identify mixin applications.

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 f583c376fa1bed7e71fc11f6bad29d6362e732ab..eaf6cef6f2d8986369329fd74570d106eb37de35 100644
--- a/pkg/analyzer/lib/src/generated/element.dart
+++ b/pkg/analyzer/lib/src/generated/element.dart
@@ -178,6 +178,12 @@ abstract class ClassElement implements Element {
   bool get isEnum;
 
   /**
+   * Return `true` if this class is a mixin application.  A class is a mixin
+   * application if it was declared using the syntax "class A = B with C;".
+   */
+  bool get isMixinApplication;
+
+  /**
    * Return `true` if this class [isProxy], or if it inherits the proxy
    * annotation from a supertype.
    */
@@ -660,6 +666,9 @@ class ClassElementImpl extends ElementImpl implements ClassElement {
   bool get isEnum => hasModifier(Modifier.ENUM);
 
   @override
+  bool get isMixinApplication => hasModifier(Modifier.MIXIN_APPLICATION);
+
+  @override
   bool get isOrInheritsProxy =>
       _safeIsOrInheritsProxy(this, new HashSet<ClassElement>());
 
@@ -695,6 +704,13 @@ class ClassElementImpl extends ElementImpl implements ClassElement {
     this._methods = methods;
   }
 
+  /**
+   * Set whether this class is a mixin application.
+   */
+  void set mixinApplication(bool isMixinApplication) {
+    setModifier(Modifier.MIXIN_APPLICATION, isMixinApplication);
+  }
+
   bool get mixinErrorsReported => hasModifier(Modifier.MIXIN_ERRORS_REPORTED);
 
   /**
@@ -7915,41 +7931,47 @@ class Modifier extends Enum<Modifier> {
   static const Modifier MIXIN = const Modifier('MIXIN', 10);
 
   /**
+   * Indicates that a class is a mixin application.
+   */
+  static const Modifier MIXIN_APPLICATION =
+      const Modifier('MIXIN_APPLICATION', 11);
+
+  /**
    * Indicates that an error has reported explaining why this class is an
    * invalid mixin application.
    */
   static const Modifier MIXIN_ERRORS_REPORTED =
-      const Modifier('MIXIN_ERRORS_REPORTED', 11);
+      const Modifier('MIXIN_ERRORS_REPORTED', 12);
 
   /**
    * Indicates that the value of a parameter or local variable might be mutated
    * within the context.
    */
   static const Modifier POTENTIALLY_MUTATED_IN_CONTEXT =
-      const Modifier('POTENTIALLY_MUTATED_IN_CONTEXT', 12);
+      const Modifier('POTENTIALLY_MUTATED_IN_CONTEXT', 13);
 
   /**
    * Indicates that the value of a parameter or local variable might be mutated
    * within the scope.
    */
   static const Modifier POTENTIALLY_MUTATED_IN_SCOPE =
-      const Modifier('POTENTIALLY_MUTATED_IN_SCOPE', 13);
+      const Modifier('POTENTIALLY_MUTATED_IN_SCOPE', 14);
 
   /**
    * Indicates that a class contains an explicit reference to 'super'.
    */
   static const Modifier REFERENCES_SUPER =
-      const Modifier('REFERENCES_SUPER', 14);
+      const Modifier('REFERENCES_SUPER', 15);
 
   /**
    * Indicates that the pseudo-modifier 'set' was applied to the element.
    */
-  static const Modifier SETTER = const Modifier('SETTER', 15);
+  static const Modifier SETTER = const Modifier('SETTER', 16);
 
   /**
    * Indicates that the modifier 'static' was applied to the element.
    */
-  static const Modifier STATIC = const Modifier('STATIC', 16);
+  static const Modifier STATIC = const Modifier('STATIC', 17);
 
   /**
    * Indicates that the element does not appear in the source code but was
@@ -7957,13 +7979,13 @@ class Modifier extends Enum<Modifier> {
    * constructors, an implicit zero-argument constructor will be created and it
    * will be marked as being synthetic.
    */
-  static const Modifier SYNTHETIC = const Modifier('SYNTHETIC', 17);
+  static const Modifier SYNTHETIC = const Modifier('SYNTHETIC', 18);
 
   /**
    * Indicates that a class was defined using an alias.
    * TODO(brianwilkerson) This should be renamed to 'ALIAS'.
    */
-  static const Modifier TYPEDEF = const Modifier('TYPEDEF', 18);
+  static const Modifier TYPEDEF = const Modifier('TYPEDEF', 19);
 
   static const List<Modifier> values = const [
     ABSTRACT,
@@ -7977,6 +7999,7 @@ class Modifier extends Enum<Modifier> {
     GETTER,
     HAS_EXT_URI,
     MIXIN,
+    MIXIN_APPLICATION,
     MIXIN_ERRORS_REPORTED,
     POTENTIALLY_MUTATED_IN_CONTEXT,
     POTENTIALLY_MUTATED_IN_SCOPE,