update polymer, nodebind, and templatebinding

pkg/polymer/lib/src/build/script_compactor.dart

 // Copyright (c) 2013, 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.
 
 /// Transfomer that combines multiple dart script tags into a single one.
 library polymer.src.build.script_compactor;
 
 import 'dart:async';
 import 'dart:convert';
 
@@ skipping 488 matching lines @@
       var isTwoWay = false;
       if (name is String) {
         name = name.toLowerCase();
         isEvent = name.startsWith('on-');
         isTwoWay = !isEvent && bindings.isWhole && (isCustomTag ||
             tag == 'input' && (name == 'value' || name =='checked') ||
             tag == 'select' && (name == 'selectedindex' || name == 'value') ||
             tag == 'textarea' && name == 'value');
       }
       for (var exp in bindings.expressions) {
-        _addExpression(exp, isEvent, isTwoWay);
+        _addExpression(exp, isEvent, isTwoWay, node.sourceSpan);
       }
     });
   }
 
-  void _addExpression(String stringExpression, bool inEvent, bool isTwoWay) {
+  void _addExpression(String stringExpression, bool inEvent, bool isTwoWay,
+      SourceSpan span) {
+
     if (inEvent) {
-      if (!stringExpression.startsWith("@")) {
-        if (stringExpression == '') return;
-        generator.addGetter(stringExpression);
-        generator.addSymbol(stringExpression);
+      if (stringExpression.startsWith('@')) {
+        logger.warning('event bindings with @ are no longer supported',
+            span: span);
         return;
       }
-      stringExpression = stringExpression.substring(1);
+
+      if (stringExpression == '') return;
+      generator.addGetter(stringExpression);
+      generator.addSymbol(stringExpression);
     }
     visitor.run(pe.parse(stringExpression), isTwoWay);
   }
 }
 
 /// A polymer-expression visitor that records every getter and setter that will
 /// be needed to evaluate a single expression at runtime.
 class _SubExpressionVisitor extends pe.RecursiveVisitor {
   final SmokeCodeGenerator generator;
   bool _includeSetter;
@@ skipping 161 matching lines @@
   for (var e in lib.exports) {
     var exported = e.exportedLibrary.units.expand((u) => u.types).toList();
     _filter(exported, e.combinators);
     result.addAll(exported);
   }
   return result;
 }
 
 /// Retrieves all top-level methods that are visible if you were to import
 /// [lib]. This includes exported methods from other libraries too.
-List<ClassElement> _visibleTopLevelMethodsOf(LibraryElement lib) {
+List<FunctionElement> _visibleTopLevelMethodsOf(LibraryElement lib) {
   var result = [];
   result.addAll(lib.units.expand((u) => u.functions));
   for (var e in lib.exports) {
     var exported = e.exportedLibrary.units
         .expand((u) => u.functions).toList();
     _filter(exported, e.combinators);
     result.addAll(exported);
   }
   return result;
 }
 
 /// Filters [elements] that come from an export, according to its show/hide
 /// combinators. This modifies [elements] in place.
 void _filter(List<analyzer.Element> elements,
     List<NamespaceCombinator> combinators) {
   for (var c in combinators) {
     if (c is ShowElementCombinator) {
       var show = c.shownNames.toSet();
       elements.retainWhere((e) => show.contains(e.displayName));
     } else if (c is HideElementCombinator) {
       var hide = c.hiddenNames.toSet();
       elements.removeWhere((e) => hide.contains(e.displayName));
     }
   }
 }