First cut at API for native Typed Arrays.

src/factory.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1038 matching lines @@
 Handle<JSArrayBuffer> Factory::NewJSArrayBuffer() {
   JSFunction* array_buffer_fun =
       isolate()->context()->native_context()->array_buffer_fun();
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateJSObject(array_buffer_fun),
       JSArrayBuffer);
 }
 
 
+Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type) {
+  JSFunction* typed_array_fun;
+  Context* native_context = isolate()->context()->native_context();
+  switch (type) {
+    case kExternalUnsignedByteArray:
+      typed_array_fun = native_context->uint8_array_fun();
+      break;
+
+    case kExternalByteArray:
+      typed_array_fun = native_context->int8_array_fun();
+      break;
+
+    case kExternalUnsignedShortArray:
+      typed_array_fun = native_context->uint16_array_fun();
+      break;
+
+    case kExternalShortArray:
+      typed_array_fun = native_context->int16_array_fun();
+      break;
+
+    case kExternalUnsignedIntArray:
+      typed_array_fun = native_context->uint32_array_fun();
+      break;
+
+    case kExternalIntArray:
+      typed_array_fun = native_context->int32_array_fun();
+      break;
+
+    case kExternalFloatArray:
+      typed_array_fun = native_context->float_array_fun();
+      break;
+
+    case kExternalDoubleArray:
+      typed_array_fun = native_context->double_array_fun();
+      break;
+
+    default:
+      UNREACHABLE();
+      return Handle<JSTypedArray>();
+  }
+
+  CALL_HEAP_FUNCTION(
+      isolate(),
+      isolate()->heap()->AllocateJSObject(typed_array_fun),
+      JSTypedArray);
+}
+
+
 Handle<JSProxy> Factory::NewJSProxy(Handle<Object> handler,
                                     Handle<Object> prototype) {
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateJSProxy(*handler, *prototype),
       JSProxy);
 }
 
 
 void Factory::BecomeJSObject(Handle<JSReceiver> object) {
@@ skipping 427 matching lines @@
   return Handle<Object>::null();
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 
 } }  // namespace v8::internal