Compute NewStructure in resolution.

pkg/compiler/lib/src/elements/elements.dart

 // Copyright (c) 2012, 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 elements;
 
 import '../common.dart';
 import '../common/resolution.dart' show
     Resolution;
 import '../compiler.dart' show
@@ skipping 1231 matching lines @@
   ///
   ///     class C { factory C() = D; }
   ///     class D { factory D() = E; }
   ///     class E { E(); }
   ///
   /// The immediate redirection target of `C` is `D` and the immediate
   /// redirection target of `D` is `E`. `E` is not a redirecting factory
   /// constructor so its immediate redirection target is `null`.
   ConstructorElement get immediateRedirectionTarget;
 
-  bool get isCyclicRedirection;
-
   /// The prefix of the immediateRedirectionTarget, if it is deferred.
   /// [null] if it is not deferred.
   PrefixElement get redirectionDeferredPrefix;
 
   /// Is `true` if this constructor is a redirecting generative constructor.
   bool get isRedirectingGenerative;
 
   /// Is `true` if this constructor is a redirecting factory constructor.
   bool get isRedirectingFactory;
 
+  /// Is `true` if this constructor is a redirecting factory constructor that is
+  /// part of a redirection cycle.
+  bool get isCyclicRedirection;
+
+  /// Is `true` if the effective target of this constructor is malformed.
+  ///
+  /// A constructor is considered malformed if any of the following applies:
+  ///
+  ///     * the constructor is undefined,
+  ///     * the type of the constructor is undefined,
+  ///     * the constructor is a redirecting factory and either
+  ///       - it is part of a redirection cycle,
+  ///       - the effective target is a generative constructor on an abstract
+  ///         class, or
+  ///       - this constructor is constant but the effective target is not,
+  ///       - the arguments to this constructor are incompatible with the
+  ///         parameters of the effective target.
+  bool get isEffectiveTargetMalformed;
+
   /// Compute the type of the effective target of this constructor for an
   /// instantiation site with type [:newType:].
   InterfaceType computeEffectiveTargetType(InterfaceType newType);
 
   /// If this is a synthesized constructor [definingConstructor] points to
   /// the generative constructor from which this constructor was created.
   /// Otherwise [definingConstructor] is `null`.
   ///
   /// Consider for instance this hierarchy:
   ///
@@ skipping 426 matching lines @@
   bool get isDeclaredByField;
 
   /// Returns `true` if this member is abstract.
   bool get isAbstract;
 
   /// If abstract, [implementation] points to the overridden concrete member,
   /// if any. Otherwise [implementation] points to the member itself.
   Member get implementation;
 }