add support for template repeat

lib/templating.dart

 // Copyright (c) 2012, 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.
 
 /** Common utility functions used by code generated by the dwc compiler. */
 library templating;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:html';
@@ skipping 437 matching lines @@
   /** Bind [exp] to [setter] while this template is visible.  */
   void oneWayBind(exp, setter, isFinal, [isUrl = false]) {
     children.add(new DomPropertyBinding(exp, setter, isUrl, isFinal));
   }
 
   /** Watch [exp] and render a conditional while this template is visible. */
   void conditional(Node template, exp, bodySetup) {
     children.add(new ConditionalTemplate(template, exp, bodySetup));
   }
 
-  /** Watch [exp] and render a loop while this template is visible. */
-  void loop(Node template, exp, iterSetup, {isTemplateElement: true}) {
-    children.add(
-        isTemplateElement ?  new LoopTemplate(template, exp, iterSetup)
-        : new LoopTemplateInAttribute(template, exp, iterSetup));
+  /**
+   * Watch [exp] and render a loop while this template is visible.
+   * This is used by all "iterate" and "repeat" attributes, except those that
+   * require [loopIterateAttr].
+   */
+  void loop(Node template, exp, iterSetup) {
+    children.add(new LoopTemplate(template, exp, iterSetup));
+  }
+
+  /**
+   * Watch [exp] and render a loop while this template is visible.
+   * This is used by:
+   *     <td template iterate="x in list">
+   */
+  void loopIterateAttr(Node template, exp, iterSetup) {
+    children.add(new LoopTemplateInAttribute(template, exp, iterSetup));
   }
 
   /** Bind the lifecycle of the component with this template's lifecycle. */
   void component(WebComponent component) {
     children.add(new ComponentItem(component));
   }
 
   // TODO(sigmund): consider changing emitter to accept compact arguments here
   // for instance:
   //   __t.add(string) => add(new Text(string))
@@ skipping 121 matching lines @@
   void remove() {
     super.remove();
     stopper();
     stopper = null;
   }
 }
 
 /** Function to set up the contents of a loop template. */
 typedef void LoopIterationSetup(loopVariable, Template template);
 
-/** A template loop of the form `<template iterate="x in list ">`. */
+/**
+ * A template loop of the form `<template iterate="x in list ">` or
+ * `<td template repeat="x in list">`.
+ */
 class LoopTemplate extends PlaceholderTemplate {
   final LoopIterationSetup iterSetup;
 
   LoopTemplate(Node reference, exp, this.iterSetup) : super(reference, exp);
 
   void insert() {
     stopper = watchAndInvoke(exp, (e) {
       super.remove();
       for (var x in e.newValue) {
         iterSetup(x, this);
@@ skipping 41 matching lines @@
     node.nodes.clear();
     nodes.clear();
   }
 
   void remove() {
     _removeInternal();
     stopper();
     stopper = null;
   }
 }