6 Nan::Persistent<v8::Function> Null::constructor;
7 bool Null::constructor_locked = false;
11 Null& Null::get_singleton() {
12 static Null singleton_instance;
13 return singleton_instance;
16 v8::Local<v8::Function> Null::get_constructor() {
17 Nan::EscapableHandleScope scope;
18 v8::Local<v8::Function> conslocal;
19 if (constructor.IsEmpty()) {
20 v8::Local<v8::FunctionTemplate> tpl = Nan::New<v8::FunctionTemplate>(New);
22 tpl->SetClassName(Nan::New("SassNull").ToLocalChecked());
23 tpl->InstanceTemplate()->SetInternalFieldCount(1);
25 conslocal = Nan::GetFunction(tpl).ToLocalChecked();
26 constructor.Reset(conslocal);
28 get_singleton().js_object.Reset(Nan::NewInstance(conslocal).ToLocalChecked());
29 Nan::SetInternalFieldPointer(Nan::New(get_singleton().js_object), 0, &get_singleton());
30 Nan::Set(conslocal, Nan::New("NULL").ToLocalChecked(), Nan::New(get_singleton().js_object));
32 constructor_locked = true;
34 conslocal = Nan::New(constructor);
37 return scope.Escape(conslocal);
40 Sass_Value* Null::get_sass_value() {
41 return sass_make_null();
44 v8::Local<v8::Object> Null::get_js_object() {
45 return Nan::New(this->js_object);
48 NAN_METHOD(Null::New) {
50 if (info.IsConstructCall()) {
51 if (constructor_locked) {
52 return Nan::ThrowTypeError("Cannot instantiate SassNull");
56 info.GetReturnValue().Set(get_singleton().get_js_object());