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pkg/compiler/lib/src/deferred_load.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 deferred_load;
 
 import 'common/tasks.dart' show CompilerTask;
 import 'common.dart';
 import 'compiler.dart' show Compiler;
 import 'constants/expressions.dart' show ConstantExpression;
@@ skipping 147 matching lines @@
       : compiler = compiler,
         super(compiler.measurer) {
     mainOutputUnit.imports.add(_fakeMainImport);
   }
 
   JavaScriptBackend get backend => compiler.backend;
   DiagnosticReporter get reporter => compiler.reporter;
 
   /// Returns the [OutputUnit] where [element] belongs.
   OutputUnit outputUnitForElement(Element element) {
+    // TODO(johnniwinther): Support use of entities by splitting maps by
+    // entity kind.
     if (!isProgramSplit) return mainOutputUnit;
 
     element = element.implementation;
     while (!_elementToOutputUnit.containsKey(element)) {
       // TODO(21051): workaround: it looks like we output annotation constants
       // for classes that we don't include in the output. This seems to happen
       // when we have reflection but can see that some classes are not needed.
       // We still add the annotation but don't run through it below (where we
       // assign every element to its output unit).
       if (element.enclosingElement == null) {
         _elementToOutputUnit[element] = mainOutputUnit;
         break;
       }
       element = element.enclosingElement.implementation;
     }
     return _elementToOutputUnit[element];
   }
 
   /// Returns the [OutputUnit] where [element] belongs.
-  OutputUnit outputUnitForClass(ClassElement element) {
-    return outputUnitForElement(element);
+  OutputUnit outputUnitForClass(ClassEntity element) {
+    if (!isProgramSplit) return mainOutputUnit;

[Siggi Cherem (dart-lang), 2017/05/30 22:10:20]

how about removing the check here and the cast below, instead do change
outputUnitForElement to take an Entity, return quickly and then cast to an
Element?

if (!isProgramSplit) return ...;
// TODO(johhniwinther): support entities by .... 
Element element = entity;

[Johnni Winther, 2017/05/31 08:19:31]

Done.

+    return outputUnitForElement(element as ClassElement);
   }
 
   /// Returns the [OutputUnit] where [element] belongs.
-  OutputUnit outputUnitForMember(MemberElement element) {
-    return outputUnitForElement(element);
+  OutputUnit outputUnitForMember(MemberEntity element) {
+    if (!isProgramSplit) return mainOutputUnit;
+    return outputUnitForElement(element as MemberElement);
   }
 
   /// Direct access to the output-unit to element relation used for testing.
   OutputUnit getOutputUnitForElementForTesting(Element element) {
     return _elementToOutputUnit[element];
   }
 
   /// Returns the [OutputUnit] where [constant] belongs.
   OutputUnit outputUnitForConstant(ConstantValue constant) {
     if (!isProgramSplit) return mainOutputUnit;
@@ skipping 886 matching lines @@
 
   bool operator ==(other) {
     if (other is! _DeclaredDeferredImport) return false;
     return declaration == other.declaration;
   }
 
   int get hashCode => declaration.hashCode * 17;
 
   String toString() => '$declaration';
 }