Index: sdk/lib/_internal/compiler/implementation/ordered_typeset.dart |
diff --git a/sdk/lib/_internal/compiler/implementation/ordered_typeset.dart b/sdk/lib/_internal/compiler/implementation/ordered_typeset.dart |
index 98cc60ac4e8c75f80cec7ba90bd2d8fc6fab749a..1ec9ff337306f58a08a0fb08e058388434cc4a12 100644 |
--- a/sdk/lib/_internal/compiler/implementation/ordered_typeset.dart |
+++ b/sdk/lib/_internal/compiler/implementation/ordered_typeset.dart |
@@ -87,6 +87,22 @@ class OrderedTypeSet { |
} |
} |
+ InterfaceType asInstanceOf(ClassElement cls) { |
+ int level = cls.hierarchyDepth; |
+ if (level < levels) { |
+ Link<DartType> pointer = _levels[level]; |
+ Link<DartType> end = |
+ level > 0 ? _levels[level - 1] : const Link<DartType>(); |
+ while (!identical(pointer, end)) { |
+ if (cls == pointer.head.element) { |
+ return pointer.head; |
+ } |
+ pointer = pointer.tail; |
+ } |
+ } |
+ return null; |
+ } |
+ |
String toString() => types.toString(); |
} |