Expose string/regexp related public symbols on harmony flag.

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/base/utils/random-number-generator.h"
 #include "src/code-stubs.h"
@@ skipping 2139 matching lines @@
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_modules)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_array_includes)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_proxies)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_sloppy)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_sloppy_function)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_sloppy_let)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_rest_parameters)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_default_parameters)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_destructuring)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_object_observe)
-EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_concat_spreadable)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_regexps)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_unicode_regexps)
-EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_tostring)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_completion)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_tolength)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_do_expressions)
 
 
 static void SimpleInstallFunction(Handle<JSObject>& base, const char* name,
                                   Builtins::Name call, int len, bool adapt) {
   Handle<JSFunction> fun =
       InstallFunction(base, name, JS_OBJECT_TYPE, JSObject::kHeaderSize,
                       MaybeHandle<JSObject>(), call);
   if (adapt) {
     fun->shared()->set_internal_formal_parameter_count(len);
   } else {
     fun->shared()->DontAdaptArguments();
   }
   fun->shared()->set_length(len);
 }
 
 
+void InstallPublicSymbol(Factory* factory, Handle<Context> native_context,
+                         const char* name, Handle<Symbol> value) {
+  Handle<JSGlobalObject> global(
+      JSGlobalObject::cast(native_context->global_object()));
+  Handle<String> symbol_string = factory->InternalizeUtf8String("Symbol");
+  Handle<JSObject> symbol = Handle<JSObject>::cast(
+      JSObject::GetProperty(global, symbol_string).ToHandleChecked());
+  Handle<String> name_string = factory->InternalizeUtf8String(name);
+  PropertyAttributes attributes =
+      static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY);
+  JSObject::AddProperty(symbol, name_string, value, attributes);
+}
+
+
+void Genesis::InitializeGlobal_harmony_tostring() {
+  if (!FLAG_harmony_tostring) return;
+  InstallPublicSymbol(factory(), native_context(), "toStringTag",
+                      factory()->to_string_tag_symbol());
+}
+
+
+void Genesis::InitializeGlobal_harmony_concat_spreadable() {
+  if (!FLAG_harmony_concat_spreadable) return;
+  InstallPublicSymbol(factory(), native_context(), "isConcatSpreadable",
+                      factory()->is_concat_spreadable_symbol());
+}
+
+
+void Genesis::InitializeGlobal_harmony_regexp_subclass() {
+  if (!FLAG_harmony_regexp_subclass) return;
+  InstallPublicSymbol(factory(), native_context(), "match",
+                      factory()->match_symbol());
+  InstallPublicSymbol(factory(), native_context(), "replace",
+                      factory()->replace_symbol());
+  InstallPublicSymbol(factory(), native_context(), "search",
+                      factory()->search_symbol());
+  InstallPublicSymbol(factory(), native_context(), "split",
+                      factory()->split_symbol());
+}
+
+
 void Genesis::InitializeGlobal_harmony_reflect() {
   if (!FLAG_harmony_reflect) return;
 
   Handle<JSGlobalObject> global(JSGlobalObject::cast(
       native_context()->global_object()));
   Handle<String> reflect_string =
       factory()->NewStringFromStaticChars("Reflect");
   Handle<JSObject> reflect =
       factory()->NewJSObject(isolate()->object_function(), TENURED);
   JSObject::AddProperty(global, reflect_string, reflect, DONT_ENUM);
@@ skipping 416 matching lines @@
 }
 
 
 bool Genesis::InstallExperimentalNatives() {
   static const char* harmony_array_includes_natives[] = {
       "native harmony-array-includes.js", nullptr};
   static const char* harmony_proxies_natives[] = {"native proxy.js", nullptr};
   static const char* harmony_modules_natives[] = {nullptr};
   static const char* harmony_regexps_natives[] = {"native harmony-regexp.js",
                                                   nullptr};
-  static const char* harmony_tostring_natives[] = {"native harmony-tostring.js",
-                                                   nullptr};
+  static const char* harmony_tostring_natives[] = {nullptr};
   static const char* harmony_sloppy_natives[] = {nullptr};
   static const char* harmony_sloppy_function_natives[] = {nullptr};
   static const char* harmony_sloppy_let_natives[] = {nullptr};
   static const char* harmony_unicode_regexps_natives[] = {nullptr};
   static const char* harmony_rest_parameters_natives[] = {nullptr};
   static const char* harmony_default_parameters_natives[] = {nullptr};
   static const char* harmony_reflect_natives[] = {"native harmony-reflect.js",
                                                   nullptr};
   static const char* harmony_destructuring_natives[] = {nullptr};
   static const char* harmony_object_observe_natives[] = {
       "native harmony-object-observe.js", nullptr};
   static const char* harmony_sharedarraybuffer_natives[] = {
       "native harmony-sharedarraybuffer.js", "native harmony-atomics.js", NULL};
-  static const char* harmony_concat_spreadable_natives[] = {
-      "native harmony-concat-spreadable.js", nullptr};
+  static const char* harmony_concat_spreadable_natives[] = {nullptr};
   static const char* harmony_simd_natives[] = {"native harmony-simd.js",
                                                nullptr};
   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};
 
   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 669 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8