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packages/polymer_expressions/lib/polymer_expressions.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.
 
 /**
  * A binding delegate used with Polymer elements that
  * allows for complex binding expressions, including
  * property access, function invocation,
  * list/map indexing, and two-way filtering.
  *
@@ skipping 377 matching lines @@
  * Factory function used for testing.
  */
 class ScopeFactory {
   const ScopeFactory();
   modelScope({Object model, Map<String, Object> variables}) =>
       new Scope(model: model, variables: variables);
 
   childScope(Scope parent, String name, Object value) =>
       parent.childScope(name, value);
 }