Template parser

utils/css/validate.dart

 // Copyright (c) 2011, 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.
 
 class Validate {
   static int _classNameCheck(var selector, int matches) {
     if (selector.isCombinatorDescendant() ||
         (selector.isCombinatorNone() && matches == 0)) {
       if (matches < 0) {
         String tooMany = selector.simpleSelector.toString();
@@ skipping 20 matching lines @@
             'Use of Id selector must be singleton starting at $tooMany');
     } else {
       String error = selector.simpleSelector.toString();
       throw new CssSelectorException(
           'Selectors can not have combinators (>, +, or ~) before $error');
     }
   }
 
   // Validate the @{css expression} only .class and #elementId are valid inside
   // of @{...}.
-  static template(List<lang.Node> selectors, CssWorld cssWorld) {
+  static template(List<ASTNode> selectors, CssWorld cssWorld) {
     var errorSelector;                  // signal which selector didn't match.
     bool found = false;                 // signal if a selector is matched.
     int matches = 0;                    // < 0 IdSelectors, > 0 ClassSelector
 
     // At most one selector group (any number of simple selector sequences).
     assert(selectors.length <= 1);
 
     for (final sels in selectors) {
       for (final selector in sels.simpleSelectorSequences) {
         found = false;
         var simpleSelector = selector.simpleSelector;
         if (simpleSelector is ClassSelector) {
           // Any class name starting with an underscore is a private class name
           // that doesn't have to match the world of known classes.
           if (!simpleSelector.name.startsWith('_')) {
             // TODO(terry): For now iterate through all classes look for faster
             //              mechanism hash map, etc.
-            var className;
             for (final className in cssWorld.classes) {
               if (selector.simpleSelector.name == className) {
                 matches = _classNameCheck(selector, matches);
                 found = true;              // .class found.
                 break;
               }
               for (final className2 in cssWorld.classes) {
                 print(className2);
               }
             }
@@ skipping 29 matching lines @@
         }
 
         if (!found) {
           String unknownName = simpleSelector.toString();
           throw new CssSelectorException('Unknown selector name $unknownName');
         }
       }
     }
 
     // Every selector must match.
+    var selector = selectors[0];
     assert((matches >= 0 ? matches : -matches) ==
-        selectors[0].simpleSelectorSequences.length);
+        selector.simpleSelectorSequences.length);
   }
 }