Issue 21549. Fix for infinite loop in the Angular expression parser.

editor/tools/plugins/com.google.dart.engine/src/com/google/dart/engine/internal/html/angular/AngularHtmlUnitResolver.java

 /*
  * Copyright (c) 2013, the Dart project authors.
  * 
  * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
  * 
  * http://www.eclipse.org/legal/epl-v10.html
  * 
  * Unless required by applicable law or agreed to in writing, software distributed under the License
  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
@@ skipping 495 matching lines @@
       formatterToken = name.getEndToken().getNext();
       // parse arguments
       List<AngularFormatterArgument> arguments = Lists.newArrayList();
       while (formatterToken.getType() != TokenType.EOF) {
         // skip ":"
         Token colonToken = formatterToken;
         if (colonToken.getType() == TokenType.COLON) {
           formatterToken = formatterToken.getNext();
         } else {
           reportErrorForToken(AngularCode.MISSING_FORMATTER_COLON, colonToken);
+          break;
         }
         // parse argument
         Expression argument = parseDartExpressionInToken(formatterToken);
         arguments.add(new AngularFormatterArgument(colonToken, argument));
         // next token
         formatterToken = argument.getEndToken().getNext();
       }
       formatters.add(new AngularFormatterNode(barToken, name, arguments));
     }
     // done
@@ skipping 330 matching lines @@
       public Void visitXmlTagNode(XmlTagNode node) {
         NgModelProcessor directive = NgModelProcessor.INSTANCE;
         if (directive.canApply(node)) {
           directive.applyTopDeclarations(AngularHtmlUnitResolver.this, node);
         }
         return super.visitXmlTagNode(node);
       }
     });
   }
 }