Issue 21886. Make enums available outside of the defining library.

pkg/analyzer/lib/src/generated/resolver.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 engine.resolver;
 
 import "dart:math" as math;
 import 'dart:collection';
 
 import 'package:analyzer/src/generated/utilities_collection.dart';
@@ skipping 10205 matching lines @@
    *
    * @param definedNames the mapping table to which the public names are to be added
    * @param compilationUnit the compilation unit defining the top-level names to be added to this
    *          namespace
    */
   void _addPublicNames(Map<String, Element> definedNames,
       CompilationUnitElement compilationUnit) {
     for (PropertyAccessorElement element in compilationUnit.accessors) {
       _addIfPublic(definedNames, element);
     }
+    for (ClassElement element in compilationUnit.enums) {
+      _addIfPublic(definedNames, element);
+    }
     for (FunctionElement element in compilationUnit.functions) {
       _addIfPublic(definedNames, element);
     }
     for (FunctionTypeAliasElement element in
         compilationUnit.functionTypeAliases) {
       _addIfPublic(definedNames, element);
     }
     for (ClassElement element in compilationUnit.types) {
       _addIfPublic(definedNames, element);
     }
@@ skipping 1099 matching lines @@
     if (kind == ElementKind.LOCAL_VARIABLE) {
       return element as VariableElement;
     }
     if (kind == ElementKind.PARAMETER) {
       return element as VariableElement;
     }
     return null;
   }
 
   /**
+   * Prepares this [ResolverVisitor] to using it for incremental resolution.
+   */
+  void initForIncrementalResolution() {
+    _overrideManager.enterScope();
+  }
+
+  /**
    * If it is appropriate to do so, override the current type of the static and propagated elements
    * associated with the given expression with the given type. Generally speaking, it is appropriate
    * if the given type is more specific than the current type.
    *
    * @param expression the expression used to access the static and propagated elements whose types
    *          might be overridden
    * @param potentialType the potential type of the elements
    * @param allowPrecisionLoss see @{code overrideVariable} docs
    */
   void overrideExpression(Expression expression, DartType potentialType,
@@ skipping 226 matching lines @@
   Object visitCommentReference(CommentReference node) {
     //
     // We do not visit the identifier because it needs to be visited in the
     // context of the reference.
     //
     node.accept(_elementResolver);
     node.accept(_typeAnalyzer);
     return null;
   }
 
-  /**
-   * Prepares this [ResolverVisitor] to using it for incremental resolution.
-   */
-  void initForIncrementalResolution() {
-    _overrideManager.enterScope();
-  }
-
   @override
   Object visitCompilationUnit(CompilationUnit node) {
     //
     // TODO(brianwilkerson) The goal of the code below is to visit the
     // declarations in such an order that we can infer type information for
     // top-level variables before we visit references to them. This is better
     // than making no effort, but still doesn't completely satisfy that goal
     // (consider for example "final var a = b; final var b = 0;"; we'll infer a
     // type of 'int' for 'b', but not for 'a' because of the order of the
     // visits). Ideally we would create a dependency graph, but that would
@@ skipping 4773 matching lines @@
    * library.
    */
   final HashSet<String> members = new HashSet<String>();
 
   /**
    * Names of resolved or unresolved class members that are read in the
    * library.
    */
   final HashSet<String> readMembers = new HashSet<String>();
 }