[esnext] implement Object.getOwnPropertyDescriptors() proposal

src/bootstrapper.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/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/code-stubs.h"
 #include "src/extensions/externalize-string-extension.h"
@@ skipping 2452 matching lines @@
   Isolate* isolate = global->GetIsolate();
   Factory* factory = isolate->factory();
 
   Handle<JSFunction> object_function = isolate->object_function();
   SimpleInstallFunction(object_function, factory->entries_string(),
                         Builtins::kObjectEntries, 1, false);
   SimpleInstallFunction(object_function, factory->values_string(),
                         Builtins::kObjectValues, 1, false);
 }
 
+void Genesis::InitializeGlobal_harmony_object_own_property_descriptors() {
+  if (!FLAG_harmony_object_own_property_descriptors) return;
+
+  Handle<JSGlobalObject> global(
+      JSGlobalObject::cast(native_context()->global_object()));
+  Isolate* isolate = global->GetIsolate();
+  Factory* factory = isolate->factory();
+
+  Handle<JSFunction> object_function = isolate->object_function();
+  SimpleInstallFunction(object_function,
+                        factory->getOwnPropertyDescriptors_string(),
+                        Builtins::kObjectGetOwnPropertyDescriptors, 1, false);
+}
 
 void Genesis::InstallJSProxyMaps() {
   // Allocate the different maps for all Proxy types.
   // Next to the default proxy, we need maps indicating callable and
   // constructable proxies.
 
   Handle<Map> proxy_function_map =
       Map::Copy(isolate()->sloppy_function_without_prototype_map(), "Proxy");
   proxy_function_map->set_is_constructor(true);
   native_context()->set_proxy_function_map(*proxy_function_map);
@@ skipping 473 matching lines @@
   static const char* harmony_tolength_natives[] = {nullptr};
   static const char* harmony_completion_natives[] = {nullptr};
   static const char* harmony_do_expressions_natives[] = {nullptr};
   static const char* harmony_regexp_subclass_natives[] = {nullptr};
   static const char* harmony_regexp_lookbehind_natives[] = {nullptr};
   static const char* harmony_function_name_natives[] = {nullptr};
   static const char* harmony_function_sent_natives[] = {nullptr};
   static const char* promise_extra_natives[] = {"native promise-extra.js",
                                                 nullptr};
   static const char* harmony_object_values_entries_natives[] = {nullptr};
+  static const char* harmony_object_own_property_descriptors_natives[] = {
+      nullptr};
 
   for (int i = ExperimentalNatives::GetDebuggerCount();
        i < ExperimentalNatives::GetBuiltinsCount(); i++) {
 #define INSTALL_EXPERIMENTAL_NATIVES(id, desc)                                \
   if (FLAG_##id) {                                                            \
     for (size_t j = 0; id##_natives[j] != NULL; j++) {                        \
       Vector<const char> script_name = ExperimentalNatives::GetScriptName(i); \
       if (strncmp(script_name.start(), id##_natives[j],                       \
                   script_name.length()) == 0) {                               \
         if (!Bootstrapper::CompileExperimentalBuiltin(isolate(), i)) {        \
@@ skipping 655 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8