Add support for more typed data types on native ports

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
  *
  * Dart is a class-based programming language for creating structured
@@ skipping 924 matching lines @@
 
 // --- Message sending/receiving from native code ----
 
 /**
  * A Dart_CObject is used for representing Dart objects as native C
  * data outside the Dart heap. These objects are totally detached from
  * the Dart heap. Only a subset of the Dart objects have a
  * representation as a Dart_CObject.
  *
  * The string encoding in the 'value.as_string' is UTF-8.
+ *
+ * All the different types from dart:typeddata are exposed as type
+ * kTypedData. The specific type from dart:typeddata is in the type
+ * field of the as_typed_data structure. The length in the
+ * as_typed_data structure is always in bytes.
  */
 typedef struct _Dart_CObject {
   enum Type {
     kNull = 0,
     kBool,
     kInt32,
     kInt64,
     kBigint,
     kDouble,
     kString,
     kArray,
-    kUint8Array,
-    kExternalUint8Array,
+    kTypedData,
+    kExternalTypedData,
     kUnsupported,
     kNumberOfTypes
   } type;
+
+  enum TypedDataType {
+    kInt8Array = 0,
+    kUint8Array,

[siva, 2013/04/15 23:28:45]

Don't we also need the kUint8ClampedArray type here?

+    kInt16Array,
+    kUint16Array,
+    kNumberOfTypedDataTypes
+  };
+
   union {
     bool as_bool;
     int32_t as_int32;
     int64_t as_int64;
     double as_double;
     char* as_string;
     char* as_bigint;
     struct {
       int length;
       struct _Dart_CObject** values;
     } as_array;
     struct {
+      TypedDataType type;
       int length;
       uint8_t* values;
-    } as_byte_array;
+    } as_typed_data;
     struct {
+      TypedDataType type;
       int length;
       uint8_t* data;
       void* peer;
       Dart_WeakPersistentHandleFinalizer callback;
-    } as_external_byte_array;
+    } as_external_typed_data;
   } value;
 } Dart_CObject;
 
 /**
  * Posts a message on some port. The message will contain the
  * Dart_CObject object graph rooted in 'message'.
  *
  * While the message is being sent the state of the graph of
  * Dart_CObject structures rooted in 'message' should not be accessed,
  * as the message generation will make temporary modifications to the
@@ skipping 1581 matching lines @@
  *
  * \param object An object.
  * \param peer A value to store in the peer field.
  *
  * \return Returns an error if 'object' is a subtype of Null, num, or
  *   bool.
  */
 DART_EXPORT Dart_Handle Dart_SetPeer(Dart_Handle object, void* peer);
 
 #endif  // INCLUDE_DART_API_H_