Reified metadata in the VM

runtime/include/dart_api.h

 /*
  * Copyright (c) 2012, 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.
  */
 
 #ifndef INCLUDE_DART_API_H_
 #define INCLUDE_DART_API_H_
 
 /** \mainpage Dart Embedding API Reference
@@ skipping 2256 matching lines @@
  * name/arity to a Dart_NativeFunction. If no function is found, the
  * callback should return NULL.
  *
  * See Dart_SetNativeResolver.
  */
 typedef Dart_NativeFunction (*Dart_NativeEntryResolver)(Dart_Handle name,
                                                         int num_of_arguments);
 /* TODO(turnidge): Consider renaming to NativeFunctionResolver or
  * NativeResolver. */
 
+
+/* --- Metadata support --- */
+
+/**
+ * Get metadata associated with an object.
+ *
+ * \param obj Object for which the metadata is retrieved.
+ *
+ * \return If no error occurs, returns an array of metadata values.
+ *   Returns an empty array if there is no metadata for the object.
+ *   Returns an error if the evaluation of the metadata expressions fails.
+ *
+ */
+DART_EXPORT Dart_Handle Dart_GetMetadata(Dart_Handle obj);
+
+
 /* --- Scripts and Libraries ---
  * TODO(turnidge): Finish documenting this section. */
 
 typedef enum {
   Dart_kLibraryTag = 0,
   Dart_kImportTag,
   Dart_kSourceTag,
   Dart_kCanonicalizeUrl
 } Dart_LibraryTag;
 
@@ skipping 344 matching lines @@
  *
  * The port must have been allocated by a call to Dart_NewNativePort.
  *
  * \param native_port_id The id of the native port to close.
  *
  * \return Returns true if the port was closed successfully.
  */
 DART_EXPORT bool Dart_CloseNativePort(Dart_Port native_port_id);
 
 #endif  /* INCLUDE_DART_API_H_ */  /* NOLINT */