Changes in polymer-expressions to prepare for codegen in polymer:

pkg/polymer/lib/src/instance.dart

Index: pkg/polymer/lib/src/instance.dart
diff --git a/pkg/polymer/lib/src/instance.dart b/pkg/polymer/lib/src/instance.dart
index e2183513cdc5c4065efd57c4764e8b4f4e6e76ed..4226a1af97c1cbb1369d0844c2d0fa2b5f0ebc0b 100644
--- a/pkg/polymer/lib/src/instance.dart
+++ b/pkg/polymer/lib/src/instance.dart
@@ -81,7 +81,7 @@ abstract class Polymer implements Element, Observable, NodeBindExtension {
 
   /// The one syntax to rule them all.
   static final BindingDelegate _polymerSyntax =
-      new _PolymerExpressionsWithEventDelegate();
+      new PolymerExpressionsWithEventDelegate();
 
   static int _preparingElements = 0;
 
@@ -968,7 +968,10 @@ class _PropertyValue {
   _PropertyValue(this.oldValue);
 }
 
-class _PolymerExpressionsWithEventDelegate extends PolymerExpressions {
+class PolymerExpressionsWithEventDelegate extends PolymerExpressions {
+  PolymerExpressionsWithEventDelegate({Map<String, Object> globals})

[Jennifer Messerly, 2014/03/22 00:37:56]

nice!

suggestion: rename PolymerExpressionsWithEvents ?

seems a bit friendlier.

[Siggi Cherem (dart-lang), 2014/03/22 00:57:42]

good idea. Done

+      : super(globals: globals);
+
   prepareBinding(String path, name, node) {
     if (_hasEventPrefix(name)) return Polymer.prepareBinding(path, name, node);
     return super.prepareBinding(path, name, node);