[es6] implement Reflect.apply() & Reflect.construct()

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index ff4026ce6ba4dfada69e9f831470bd4a215c1bc6..c37ff4d8641b92d14af87c3c1668f6aad8aef327 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1668,6 +1668,7 @@ EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_unicode)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_unicode_regexps)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_computed_property_names)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_rest_parameters)
+EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_reflect)
 
 
 void Genesis::InstallNativeFunctions_harmony_proxies() {
@@ -1700,6 +1701,7 @@ EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_sloppy)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_unicode)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_computed_property_names)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_rest_parameters)
+EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_reflect)
 
 void Genesis::InitializeGlobal_harmony_regexps() {
   Handle<JSObject> builtins(native_context()->builtins());
@@ -2090,6 +2092,36 @@ bool Genesis::InstallNatives() {
         *generator_object_prototype_map);
   }
 
+  // Install references to functions of the Reflect object
+  {
+    Handle<JSFunction> apply =
+        InstallFunction(builtins, "ReflectApply", JS_OBJECT_TYPE,
+                        JSObject::kHeaderSize, MaybeHandle<JSObject>(),
+                        Builtins::kReflectApply);
+    Handle<JSFunction> construct =
+        InstallFunction(builtins, "ReflectConstruct", JS_OBJECT_TYPE,
+                        JSObject::kHeaderSize, MaybeHandle<JSObject>(),
+                        Builtins::kReflectConstruct);
+    if (FLAG_vector_ics) {
+      // Apply embeds an IC, so we need a type vector of size 1 in the shared
+      // function info.
+      FeedbackVectorSpec spec(0, 1);
+      spec.SetKind(0, Code::CALL_IC);
+      Handle<TypeFeedbackVector> feedback_vector =
+          factory()->NewTypeFeedbackVector(spec);
+      apply->shared()->set_feedback_vector(*feedback_vector);
+
+      feedback_vector = factory()->NewTypeFeedbackVector(spec);
+      construct->shared()->set_feedback_vector(*feedback_vector);
+    }
+
+    apply->shared()->set_internal_formal_parameter_count(3);
+    apply->shared()->set_length(3);
+
+    construct->shared()->set_internal_formal_parameter_count(3);
+    construct->shared()->set_length(2);
+  }
+
   if (FLAG_disable_native_files) {
     PrintF("Warning: Running without installed natives!\n");
     return true;
@@ -2290,6 +2322,8 @@ bool Genesis::InstallExperimentalNatives() {
   static const char* harmony_unicode_regexps_natives[] = {NULL};
   static const char* harmony_computed_property_names_natives[] = {NULL};
   static const char* harmony_rest_parameters_natives[] = {NULL};
+  static const char* harmony_reflect_natives[] = {"native harmony-reflect.js",
+                                                  NULL};
 
   for (int i = ExperimentalNatives::GetDebuggerCount();
        i < ExperimentalNatives::GetBuiltinsCount(); i++) {
@@ -2887,6 +2921,19 @@ Genesis::Genesis(Isolate* isolate,
     isolate->counters()->contexts_created_from_scratch()->Increment();
   }
 
+  if (FLAG_harmony_reflect) {
+    // TODO(caitp): this should not be here, there's got to be a better way.
+    // Shouldn't InitializeExperimentalGlobal() happen before
+    // InitializeExperimentalNatives()?
+    Handle<JSGlobalObject> global(JSGlobalObject::cast(
+        native_context()->global_object()));
+    Handle<String> reflect_string =
+        factory()->NewStringFromStaticChars("Reflect");
+    Handle<Object> reflect =
+        factory()->NewJSObject(isolate->object_function(), TENURED);
+    JSObject::AddProperty(global, reflect_string, reflect, DONT_ENUM);
+  }
+
   // Install experimental natives. Do not include them into the snapshot as we
   // should be able to turn them off at runtime. Re-installing them after
   // they have already been deserialized would also fail.