Store type inference errors into EntityRef.

pkg/analyzer/lib/src/summary/idl.dart

 // Copyright (c) 2015, 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 file is an "idl" style description of the summary format.  It
  * contains abstract classes which declare the interface for reading data from
  * summaries.  It is parsed and transformed into code that implements the
  * summary format.
  *
@@ skipping 425 matching lines @@
   /**
    * If this [EntityRef] is a reference to a function type whose
    * [FunctionElement] is not in any library (e.g. a function type that was
    * synthesized by a LUB computation), the return type of the function.
    * Otherwise `null`.
    */
   @Id(5)
   EntityRef get syntheticReturnType;
 
   /**
+   * If this [EntityRef] is a result of type inference, and so contained within
+   * [LinkedUnit.types], and was computed as a result of top-level type
+   * inference, which failed for this target, contains the list of one or more
+   * errors describing the failure.  The [reference] must point at `dynamic` in
+   * this case.
+   */
+  @Id(8)
+  List<TopLevelInferenceError> get topLevelInferenceErrors;
+
+  /**
    * If this is an instantiation of a generic type or generic executable, the
    * type arguments used to instantiate it (if any).
    */
   @Id(1)
   List<EntityRef> get typeArguments;
 
   /**
    * If this is a function type, the type parameters defined for the function
    * type (if any).
    */
@@ skipping 640 matching lines @@
    */
   prefix,
 
   /**
    * The entity being referred to does not exist.
    */
   unresolved
 }
 
 /**
+ * Summary information about a top-level type inference error.
+ */
+abstract class TopLevelInferenceError extends base.SummaryClass {
+  /**
+   * The message describing the error.
+   */
+  @Id(0)
+  String get message;
+}
+
+/**
  * Enum used to indicate the style of a typedef.
  */
 enum TypedefStyle {
   /**
    * A typedef that defines a non-generic function type. The syntax is
    * ```
    * 'typedef' returnType? identifier typeParameters? formalParameterList ';'
    * ```
    * The typedef can have type parameters associated with it, but the function
    * type that results from applying type arguments does not.
@@ skipping 2128 matching lines @@
   @Id(11)
   int get visibleLength;
 
   /**
    * If a local variable, the beginning of the visible range; zero otherwise.
    */
   @informative
   @Id(12)
   int get visibleOffset;
 }