Option to truncate integers to 64 bits, part 2

runtime/lib/isolate.cc

 // 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.
 
 #include "include/dart_native_api.h"
 #include "platform/assert.h"
 #include "vm/bootstrap_natives.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart.h"
 #include "vm/dart_api_impl.h"
@@ skipping 52 matching lines @@
 }
 
 DEFINE_NATIVE_ENTRY(RawReceivePortImpl_factory, 1) {
   ASSERT(TypeArguments::CheckedHandle(arguments->NativeArgAt(0)).IsNull());
   Dart_Port port_id = PortMap::CreatePort(isolate->message_handler());
   return ReceivePort::New(port_id, false /* not control port */);
 }
 
 DEFINE_NATIVE_ENTRY(RawReceivePortImpl_get_id, 1) {
   GET_NON_NULL_NATIVE_ARGUMENT(ReceivePort, port, arguments->NativeArgAt(0));
-  return Integer::NewFromUint64(port.Id());
+  return Integer::New(port.Id());
 }
 
 DEFINE_NATIVE_ENTRY(RawReceivePortImpl_get_sendport, 1) {
   GET_NON_NULL_NATIVE_ARGUMENT(ReceivePort, port, arguments->NativeArgAt(0));
   return port.send_port();
 }
 
 DEFINE_NATIVE_ENTRY(RawReceivePortImpl_closeInternal, 1) {
   GET_NON_NULL_NATIVE_ARGUMENT(ReceivePort, port, arguments->NativeArgAt(0));
   Dart_Port id = port.Id();
   PortMap::ClosePort(id);
-  return Integer::NewFromUint64(id);
+  return Integer::New(id);
 }
 
 DEFINE_NATIVE_ENTRY(SendPortImpl_get_id, 1) {
   GET_NON_NULL_NATIVE_ARGUMENT(SendPort, port, arguments->NativeArgAt(0));
-  return Integer::NewFromUint64(port.Id());
+  return Integer::New(port.Id());
 }
 
 DEFINE_NATIVE_ENTRY(SendPortImpl_get_hashcode, 1) {
   GET_NON_NULL_NATIVE_ARGUMENT(SendPort, port, arguments->NativeArgAt(0));
   int64_t id = port.Id();
   int32_t hi = static_cast<int32_t>(id >> 32);
   int32_t lo = static_cast<int32_t>(id);
   int32_t hash = (hi ^ lo) & kSmiMax;
   return Smi::New(hash);
 }
@@ skipping 343 matching lines @@
   uint8_t* data = NULL;
   MessageWriter writer(&data, &malloc_allocator, &malloc_deallocator, false);
   writer.WriteMessage(msg);
 
   PortMap::PostMessage(new Message(port.Id(), data, writer.BytesWritten(),
                                    Message::kOOBPriority));
   return Object::null();
 }
 
 }  // namespace dart