Library custom formatters

tool/input_sdk/private/ddc_runtime/rtti.dart

 // Copyright (c) 2015, 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.
 
 /// This library defines the association between runtime objects and
 /// runtime types.
 part of dart._runtime;
 
 /// Runtime type information.  This module defines the mapping from
 /// runtime objects to their runtime type information.  See the types
@@ skipping 56 matching lines @@
   return closure;
 }
 
 lazyFn(closure, computeType) {
   tagLazy(closure, computeType);
   return closure;
 }
 
 // TODO(vsm): How should we encode the runtime type?
 final _runtimeType = JS('', 'Symbol("_runtimeType")');
+final isNamedConstructor = JS('', 'Symbol("isNamedConstructor")');
+final dartLibraryName = JS('', 'Symbol("dartLibraryName")');
 
 _checkPrimitiveType(obj) {
   // TODO(jmesserly): JS is used to prevent type literal wrapping.  Is there a
   // better way we can handle this?  (sra: It is super dodgy that the values
   // passed to JS are different to the values passed to a regular function - the
   // semantics are not longer that of calling an interpreter. dart2js has other
   // special functions, we could do the same.)
 
   // Check for null and undefined
   if (obj == null) return JS('', '#', Null);
@@ skipping 84 matching lines @@
 }
 
 void tagComputed(value, compute) {
   JS('', '#(#, #, { get: # })', defineProperty, value, _runtimeType, compute);
 }
 
 void tagLazy(value, compute) {
   JS('', '#(#, #, { get: # })',
       defineLazyProperty, value, _runtimeType, compute);
 }