[promises] move most of FulfillPromise to c++

src/runtime/runtime-internal.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/runtime/runtime-utils.h"
 
 #include <memory>
 
 #include "src/arguments.h"
 #include "src/ast/prettyprinter.h"
@@ skipping 554 matching lines @@
     isolate->counters()->runtime_call_stats()->Print(stats_stream);
     isolate->counters()->runtime_call_stats()->Reset();
     if (args[0]->IsString())
       std::fclose(f);
     else
       std::fflush(f);
     return isolate->heap()->undefined_value();
   }
 }
 
-RUNTIME_FUNCTION(Runtime_EnqueuePromiseReactionJob) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 4);
-  CONVERT_ARG_HANDLE_CHECKED(Object, value, 0);
-  CONVERT_ARG_HANDLE_CHECKED(Object, tasks, 1);
-  CONVERT_ARG_HANDLE_CHECKED(Object, deferred, 2);
-  CONVERT_ARG_HANDLE_CHECKED(Object, status, 3);
+namespace {
+void EnqueuePromiseReactionJob(Isolate* isolate, Handle<Object> value,
+                               Handle<Object> tasks, Handle<Object> deferred,
+                               Handle<Object> status) {
   Handle<Object> debug_id = isolate->factory()->undefined_value();
   Handle<Object> debug_name = isolate->factory()->undefined_value();
   if (isolate->debug()->is_active()) {
+    MaybeHandle<Object> maybe_result;
     Handle<Object> argv[] = {deferred, status};
-    MaybeHandle<Object> maybe_result = Execution::TryCall(
+    maybe_result = Execution::TryCall(
         isolate, isolate->promise_debug_get_info(),
         isolate->factory()->undefined_value(), arraysize(argv), argv);
     Handle<Object> result;
     if ((maybe_result).ToHandle(&result)) {
       CHECK(result->IsJSArray());
       Handle<JSArray> array = Handle<JSArray>::cast(result);
       ElementsAccessor* accessor = array->GetElementsAccessor();
       DCHECK(accessor->HasElement(array, 0));
       DCHECK(accessor->HasElement(array, 1));
       debug_id = accessor->Get(array, 0);
       debug_name = accessor->Get(array, 1);
     }
   }
   Handle<PromiseReactionJobInfo> info =
       isolate->factory()->NewPromiseReactionJobInfo(value, tasks, deferred,
                                                     debug_id, debug_name,
                                                     isolate->native_context());
   isolate->EnqueueMicrotask(info);
+}
+}  // namespace
+
+RUNTIME_FUNCTION(Runtime_PromiseFulfill) {
+  DCHECK(args.length() == 4);
+  HandleScope scope(isolate);
+  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, promise, 0);
+  CONVERT_ARG_HANDLE_CHECKED(Smi, status, 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, value, 2);
+  CONVERT_ARG_HANDLE_CHECKED(Symbol, reaction, 3);
+  Handle<Object> tasks = JSReceiver::GetDataProperty(promise, reaction);
+  if (!tasks->IsUndefined(isolate)) {
+    Handle<Object> deferred = JSReceiver::GetDataProperty(
+        promise, isolate->factory()->promise_deferred_reaction_symbol());
+    EnqueuePromiseReactionJob(isolate, value, tasks, deferred, status);
+  }
   return isolate->heap()->undefined_value();
 }
 
+RUNTIME_FUNCTION(Runtime_EnqueuePromiseReactionJob) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 4);
+  CONVERT_ARG_HANDLE_CHECKED(Object, value, 0);
+  CONVERT_ARG_HANDLE_CHECKED(Object, tasks, 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, deferred, 2);
+  CONVERT_ARG_HANDLE_CHECKED(Object, status, 3);
+  EnqueuePromiseReactionJob(isolate, value, tasks, deferred, status);
+  return isolate->heap()->undefined_value();
+}
+
 RUNTIME_FUNCTION(Runtime_EnqueuePromiseResolveThenableJob) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 4);
   CONVERT_ARG_HANDLE_CHECKED(JSReceiver, resolution, 0);
   CONVERT_ARG_HANDLE_CHECKED(JSReceiver, then, 1);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, resolve, 2);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, reject, 3);
   Handle<Object> debug_id;
   Handle<Object> debug_name;
   if (isolate->debug()->is_active()) {
@@ skipping 49 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_Typeof) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   CONVERT_ARG_HANDLE_CHECKED(Object, object, 0);
   return *Object::TypeOf(isolate, object);
 }
 
 }  // namespace internal
 }  // namespace v8