[regexp] Port RegExpConstructor to C++

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/ieee754.h"
 #include "src/code-stubs.h"
@@ skipping 1623 matching lines @@
     // Set the length for the function to satisfy ECMA-262.
     to_primitive->shared()->set_length(1);
   }
 
   {  // -- R e g E x p
     // Builtin functions for RegExp.prototype.
     Handle<JSObject> prototype =
         factory->NewJSObject(isolate->object_function(), TENURED);
     Handle<JSFunction> regexp_fun =
         InstallFunction(global, "RegExp", JS_REGEXP_TYPE, JSRegExp::kSize,
-                        prototype, Builtins::kIllegal);
+                        prototype, Builtins::kRegExpConstructor);
     InstallWithIntrinsicDefaultProto(isolate, regexp_fun,
                                      Context::REGEXP_FUNCTION_INDEX);
-    regexp_fun->shared()->SetConstructStub(
-        *isolate->builtins()->JSBuiltinsConstructStub());
+
+    Handle<SharedFunctionInfo> shared(regexp_fun->shared(), isolate);
+    shared->SetConstructStub(*isolate->builtins()->RegExpConstructor());
+    shared->set_instance_class_name(isolate->heap()->RegExp_string());
+    shared->DontAdaptArguments();
+    shared->set_length(2);
+
+    // Install the "constructor" property on the {prototype}.
+    JSObject::AddProperty(prototype, factory->constructor_string(), regexp_fun,
+                          DONT_ENUM);
+
+    // RegExp.prototype setup.
+
+    SimpleInstallFunction(prototype, "exec", Builtins::kRegExpPrototypeExec, 1,
+                          true, DONT_ENUM);
 
     DCHECK(regexp_fun->has_initial_map());
     Handle<Map> initial_map(regexp_fun->initial_map());
 
     DCHECK_EQ(0, initial_map->GetInObjectProperties());
 
     Map::EnsureDescriptorSlack(initial_map, 1);
 
     // ECMA-262, section 15.10.7.5.
     PropertyAttributes writable =
         static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE);
     DataDescriptor field(factory->last_index_string(),
                          JSRegExp::kLastIndexFieldIndex, writable,
                          Representation::Tagged());
     initial_map->AppendDescriptor(&field);
 
     static const int num_fields = JSRegExp::kInObjectFieldCount;
     initial_map->SetInObjectProperties(num_fields);
     initial_map->set_unused_property_fields(0);
     initial_map->set_instance_size(initial_map->instance_size() +
                                    num_fields * kPointerSize);
-
-    // RegExp.prototype setup.
-
-    // Install the "constructor" property on the {prototype}.
-    JSObject::AddProperty(prototype, factory->constructor_string(), regexp_fun,
-                          DONT_ENUM);
-
-    SimpleInstallFunction(prototype, "exec", Builtins::kRegExpPrototypeExec, 1,
-                          true, DONT_ENUM);
   }
 
   {  // -- E r r o r
     InstallError(isolate, global, factory->Error_string(),
                  Context::ERROR_FUNCTION_INDEX);
     InstallMakeError(isolate, isolate->builtins()->MakeError(),
                      Context::MAKE_ERROR_INDEX);
   }
 
   {  // -- E v a l E r r o r
@@ skipping 2507 matching lines @@
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 }  // namespace internal
 }  // namespace v8