[es6] implement spread calls

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 1648 matching lines @@
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_regexps)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_arrow_functions)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_numeric_literals)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_tostring)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_sloppy)
 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)
+EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_spreadcalls)
 
 
 void Genesis::InstallNativeFunctions_harmony_proxies() {
   if (FLAG_harmony_proxies) {
     INSTALL_NATIVE(JSFunction, "DerivedHasTrap", derived_has_trap);
     INSTALL_NATIVE(JSFunction, "DerivedGetTrap", derived_get_trap);
     INSTALL_NATIVE(JSFunction, "DerivedSetTrap", derived_set_trap);
     INSTALL_NATIVE(JSFunction, "ProxyEnumerate", proxy_enumerate);
   }
 }
 
 #undef INSTALL_NATIVE
 
 #define EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(id) \
   void Genesis::InitializeGlobal_##id() {}
 
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_modules)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_arrays)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_array_includes)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_classes)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_object_literals)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_arrow_functions)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_numeric_literals)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_tostring)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_proxies)
 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_spreadcalls)
 
 void Genesis::InitializeGlobal_harmony_regexps() {
   Handle<JSObject> builtins(native_context()->builtins());
 
   Handle<HeapObject> flag(FLAG_harmony_regexps ? heap()->true_value()
                                                : heap()->false_value());
   Runtime::SetObjectProperty(isolate(), builtins,
                              factory()->harmony_regexps_string(), flag,
                              STRICT).Assert();
 }
 
 
 void Genesis::InitializeGlobal_harmony_unicode_regexps() {
   Handle<JSObject> builtins(native_context()->builtins());
 
   Handle<HeapObject> flag(FLAG_harmony_unicode_regexps ? heap()->true_value()
                                                        : heap()->false_value());
   Runtime::SetObjectProperty(isolate(), builtins,
                              factory()->harmony_unicode_regexps_string(), flag,
                              STRICT).Assert();
 }
 
 
 void Genesis::InitializeGlobal_harmony_reflect() {
-  if (!FLAG_harmony_reflect) return;
   Handle<JSObject> builtins(native_context()->builtins());
   // Install references to functions of the Reflect object
-  {
+  if (FLAG_harmony_reflect || FLAG_harmony_spreadcalls) {
     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, 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_harmony_reflect) return;
   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);
 }
 
 
@@ skipping 550 matching lines @@
   static const char* harmony_numeric_literals_natives[] = {NULL};
   static const char* harmony_tostring_natives[] = {"native harmony-tostring.js",
                                                    NULL};
   static const char* harmony_sloppy_natives[] = {NULL};
   static const char* harmony_unicode_natives[] = {NULL};
   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};
+  static const char* harmony_spreadcalls_natives[] = {
+      "native harmony-spread.js", NULL};
 
   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 (!CompileExperimentalBuiltin(isolate(), i)) return false;          \
@@ skipping 622 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 } }  // namespace v8::internal