Implement accessing lazily initialized static fields.

dart/sdk/lib/_internal/lib/js_mirrors.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.
 
 library dart._js_mirrors;
 
 import 'dart:async';
 import 'dart:mirrors';
 
 import 'dart:_foreign_helper' show JS, JS_CURRENT_ISOLATE;
@@ skipping 615 matching lines @@
     throw new NoSuchMethodError(this, '${n(fieldName)}=', [arg], null);
   }
 
   InstanceMirror getField(Symbol fieldName) {
     JsVariableMirror mirror = variables[fieldName];
     if (mirror != null && mirror.isStatic) {
       String jsName = mirror._jsName;
       if (!JS('bool', '# in #', jsName, JS_CURRENT_ISOLATE())) {
         throw new RuntimeError('Cannot find "$jsName" in current isolate.');
       }
-      return reflect(JS('', '#[#]', JS_CURRENT_ISOLATE(), jsName));
+      if (JS('bool', '# in init.lazies', jsName)) {
+        String getterName = JS('String', 'init.lazies[#]', jsName);
+        return reflect(JS('', '#[#]()', JS_CURRENT_ISOLATE(), getterName));
+      } else {
+        return reflect(JS('', '#[#]', JS_CURRENT_ISOLATE(), jsName));
+      }
     }
     // TODO(ahe): What receiver to use?
     throw new NoSuchMethodError(this, n(fieldName), null, null);
   }
 
   InstanceMirror newInstance(Symbol constructorName,
                              List positionalArguments,
                              [Map<Symbol, dynamic> namedArguments]) {
     if (namedArguments != null && !namedArguments.isEmpty) {
       throw new UnsupportedError('Named arguments are not implemented.');
@@ skipping 394 matching lines @@
   var metadataFunction = JS('', '#["@"]', victim);
   if (metadataFunction != null) return JS('', '#()', metadataFunction);
   String source = JS('String', 'Function.prototype.toString.call(#)', victim);
   int index = source.lastIndexOf(new RegExp('"[0-9,]*";?[ \n\r]*}'));
   if (index == -1) return const [];
   index++;
   int endQuote = source.indexOf('"', index);
   return source.substring(index, endQuote).split(',').map(int.parse).map(
       (int i) => JS('', 'init.metadata[#]', i)).toList();
 }