Index: pkg/polymer_expressions/lib/eval.dart |
diff --git a/pkg/polymer_expressions/lib/eval.dart b/pkg/polymer_expressions/lib/eval.dart |
index be2fdec6245a73779b9a518331d8852be6c583db..22851e60aae733184eea8b6c79ab4541ee1569a7 100644 |
--- a/pkg/polymer_expressions/lib/eval.dart |
+++ b/pkg/polymer_expressions/lib/eval.dart |
@@ -249,6 +249,8 @@ abstract class ExpressionObserver<E extends Expression> implements Expression { |
ExpressionObserver(this._expr); |
+ Expression get expression => _expr; |
+ |
Object get currentValue => _value; |
update(Scope scope) => _updateSelf(scope); |