[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 1597 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_templates)
 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_spread)
+EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_spreadcalls)

[rossberg, 2015/02/24 16:22:46]

Why do we need a separate flag?

[caitp (gmail), 2015/02/25 00:00:24]

See the answer I gave to Erik --- If spread-calls and spread-elements are behind
different flags,  it seemed nice to have a third flag which would implicate both
of them (also, it would be convenient to put any self-hosted runtime support for
both in one script).

If that's not cool, I'll just get rid of it

[rossberg, 2015/02/25 14:28:18]

Well, since they currently imply each other, the separation doesn't really
exist. :)  But yeah, I don't think we need feature subset flags.

 
 
 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);
   }
 }
@@ skipping 12 matching lines @@
 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_templates)
 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_spread)
+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());
   PropertyAttributes attributes =
       static_cast<PropertyAttributes>(DONT_DELETE | READ_ONLY);
   Runtime::DefineObjectProperty(builtins, factory()->harmony_regexps_string(),
                                 flag, attributes).Assert();
@@ skipping 563 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_templates_natives[] = {
       "native harmony-templates.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_spread_natives[] = {"native harmony-spread.js",
+                                                 NULL};
+  static const char* harmony_spreadcalls_natives[] = {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 616 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 } }  // namespace v8::internal