add support for template repeat

lib/src/info.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.
 
 /**
  * Datatypes holding information extracted by the analyzer and used by later
  * phases of the compiler.
  */
 library web_ui.src.info;
 
@@ skipping 356 matching lines @@
    * Collected information about `data-value="name:value"` expressions.
    * Note: this feature is deprecated and should be removed after grace period.
    */
   final Map<String, String> values = new SplayTreeMap<String, String>();
 
   // TODO(jmesserly): we could keep this local to the analyzer.
   /** Attribute names to remove in cleanup phase. */
   final Set<String> removeAttributes = new Set<String>();
 
   /** Whether the template element has `iterate="... in ...". */
-  bool get hasIterate => false;
+  bool get hasLoop => false;
 
   /** Whether the template element has an `if="..."` conditional. */
-  bool get hasIfCondition => false;
+  bool get hasCondition => false;
 
   bool get isTemplateElement => false;
 
   /**
    * For a builtin HTML element this returns the [node.tagName], otherwise it
    * returns [component.baseExtendsTag]. This is useful when looking up which
    * DOM property this element supports.
    */
   String get baseTagName =>
       component != null ? component.baseExtendsTag : node.tagName;
 
   ElementInfo(Element node, ElementInfo parent, [this.component])
       : super(node, parent);
 
   String toString() => '#<ElementInfo '
       'identifier: $identifier, '
       'childrenCreatedInCode: $childrenCreatedInCode, '
       'component: $component, '
       'descendantHasBinding: $descendantHasBinding, '
-      'hasIterate: $hasIterate, '
-      'hasIfCondition: $hasIfCondition, '
+      'hasLoop: $hasLoop, '
+      'hasCondition: $hasCondition, '
       'attributes: $attributes, '
       'events: $events>';
 }
 
 /**
  * Information for a single text node created programatically. We create a
  * [TextInfo] for data bindings that occur in content nodes, and for each
  * text node that is created programatically in code. Note that the analyzer
  * splits HTML text nodes, so that each data-binding has its own node (and
  * [TextInfo]).
@@ skipping 127 matching lines @@
    */
   final String loopVariable;
 
   /**
    * If this is a `<template iterate="item in items">`, this is the expression
    * to get the items to iterate over, e.g. `items`. This will be null if it is
    * not a `<template iterate="...">`.
    */
   final String loopItems;
 
+  /**
+   * True if this is a repeat. Otherwise, it is an iterate.

[Siggi Cherem (dart-lang), 2013/04/05 20:09:24]

maybe clarify that this is only if 'hasLoop' is true, otherwise 'isRepeat' is
irrelevant

[Jennifer Messerly, 2013/04/05 20:34:36]

thanks, clarified.

+   *
+   * For template elements, the two are equivalent, but for template attributes
+   * repeat is more expressive.
+   */
+  final bool isRepeat;
+
   TemplateInfo(Node node, ElementInfo parent,
-      {this.ifCondition, this.loopVariable, this.loopItems})
+      {this.ifCondition, this.loopVariable, this.loopItems, this.isRepeat})
       : super(node, parent) {
-    childrenCreatedInCode = hasIfCondition || hasIterate;
+    childrenCreatedInCode = hasCondition || hasLoop;
   }
 
   /**
    * True when [node] is a '<template>' tag. False when [node] is any other
    * element type and the template information is attached as an attribute.
    */
   bool get isTemplateElement => node.tagName == 'template';
 
-  bool get hasIfCondition => ifCondition != null;
+  bool get hasCondition => ifCondition != null;
 
-  bool get hasIterate => loopVariable != null;
+  bool get hasLoop => loopVariable != null;
 
   String toString() => '#<TemplateInfo ${super.toString()}'
       'ifCondition: $ifCondition, '
       'loopVariable: $ifCondition, '
       'loopItems: $ifCondition>';
 }
 
 /**
  * Specifies the action to take on a particular event. Some actions need to read
  * attributes from the DOM element that has the event listener (e.g. two way
@@ skipping 37 matching lines @@
  */
 class UrlInfo {
   /** Path that the URL points to. */
   final String resolvedPath;
 
   /** Original source location where the URL was extracted from. */
   final Span sourceSpan;
 
   UrlInfo(this.resolvedPath, this.sourceSpan);
 }