Add Dart_PropagateError.

runtime/vm/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 "vm/isolate.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/bigint_store.h"
 #include "vm/code_index_table.h"
@@ skipping 124 matching lines @@
   // main thread.
   // TODO(5411455): Need to figure out how to set the stack limit for the
   // main thread.
   result->SetStackLimitFromCurrentTOS(reinterpret_cast<uword>(&result));
   result->set_main_port(PortMap::CreatePort());
   result->BuildName(name_prefix);
 
   result->debugger_ = new Debugger();
   result->debugger_->Initialize(result);
   if (FLAG_trace_isolates) {
-    if (strcmp(name_prefix, "vm-isolate") != 0) {
+    if (name_prefix == NULL || strcmp(name_prefix, "vm-isolate") != 0) {
       OS::Print("[+] Starting isolate:\n"
                 "\tisolate:    %s\n", result->name());
     }
   }
   return result;
 }
 
 
 void Isolate::BuildName(const char* name_prefix) {
   ASSERT(name_ == NULL);
@@ skipping 163 matching lines @@
 
   // Read object back from the snapshot.
   SnapshotReader reader(snapshot, Isolate::Current());
   Instance& instance = Instance::Handle();
   instance ^= reader.ReadObject();
   return instance.raw();
 }
 
 
 
-RawObject* Isolate::StandardRunLoop() {
-  ASSERT(long_jump_base() != NULL);
+RawError* Isolate::StandardRunLoop() {
   ASSERT(post_message_callback() == &StandardPostMessageCallback);
   ASSERT(close_port_callback() == &StandardClosePortCallback);
 
   while (live_ports() > 0) {
     ASSERT(this == Isolate::Current());
     Zone zone(this);
     HandleScope handle_scope(this);
 
     PortMessage* message = message_queue()->Dequeue(0);
     if (message != NULL) {
       const Instance& msg =
           Instance::Handle(DeserializeMessage(message->data()));
       const Object& result = Object::Handle(
           DartLibraryCalls::HandleMessage(
               message->dest_port(), message->reply_port(), msg));
       delete message;
-      if (result.IsUnhandledException()) {
-        return result.raw();
+      if (result.IsError()) {
+        Error& error = Error::Handle();
+        error ^= result.raw();
+        return error.raw();
       }
     }
   }
 
   // Indicates success.
-  return Object::null();
+  return Error::null();
 }
 
 
 void Isolate::VisitObjectPointers(ObjectPointerVisitor* visitor,
                                   bool validate_frames) {
   ASSERT(visitor != NULL);
 
   // Visit objects in the object store.
   object_store()->VisitObjectPointers(visitor);
 
@@ skipping 29 matching lines @@
 }
 
 
 void Isolate::VisitWeakPersistentHandles(HandleVisitor* visitor) {
   if (api_state() != NULL) {
     api_state()->VisitWeakHandles(visitor);
   }
 }
 
 }  // namespace dart