v8 expose type

gistfile1.cpp

struct Point {
  // Point(int x = 0, int y = 0) : x(x), y(y) {};
  int x, y;

  
  auto static 
  v8_get_x(v8::Local<v8::String> name, 
           const v8::PropertyCallbackInfo<v8::Value>& info) -> void {
    auto self    = info.Holder();
    auto wrapped = v8::Handle<v8::External>::Cast(self->GetInternalField(0));
    
    auto ptr   = wrapped->Value();
    auto value = static_cast<Point*>(ptr)->x;
    
    info.GetReturnValue().Set(v8::Integer::New(info.GetIsolate(), value));
  };
  
  
  auto static 
  v8_get_y(v8::Local<v8::String> name, 
           const v8::PropertyCallbackInfo<v8::Value>& info) -> void {
    auto self    = info.Holder();
    auto wrapped = v8::Handle<v8::External>::Cast(self->GetInternalField(0));
    
    auto ptr   = wrapped->Value();
    auto value = static_cast<Point*>(ptr)->y;
    
    info.GetReturnValue().Set(v8::Integer::New(info.GetIsolate(), value));
  };


  auto static 
  v8_set_x(v8::Local<v8::String> property, v8::Local<v8::Value> value,
           const v8::PropertyCallbackInfo<void>& info) -> void {
    auto self    = info.Holder();
    auto wrapped = v8::Handle<v8::External>::Cast(self->GetInternalField(0));
    
    auto ptr   = wrapped->Value();
    auto point = static_cast<Point*>(ptr);
    
    point->x = value->Int32Value();
  };

  
  auto static 
  v8_set_y(v8::Local<v8::String> property, v8::Local<v8::Value> value,
           const v8::PropertyCallbackInfo<void>& info) -> void {
    auto self    = info.Holder();
    auto wrapped = v8::Handle<v8::External>::Cast(self->GetInternalField(0));
    
    auto ptr   = wrapped->Value();
    auto point = static_cast<Point*>(ptr);
    
    point->y = value->Int32Value();
  };

  
  auto static 
  v8_register_type(v8::Isolate* isolate, 
                   v8::Local<v8::ObjectTemplate>& global) -> void {
    auto v8_ctor = v8::FunctionTemplate::New(isolate, Point::v8_ctor_fn); 
    auto ctor_tpl = v8_ctor->InstanceTemplate();
    
    ctor_tpl->SetInternalFieldCount(1);
    ctor_tpl->SetAccessor(v8::String::NewFromUtf8(isolate, "x"),
                          Point::v8_get_x, Point::v8_set_x);
    ctor_tpl->SetAccessor(v8::String::NewFromUtf8(isolate, "y"),
                          Point::v8_get_y, Point::v8_set_y);

    global->Set(v8::String::NewFromUtf8(isolate, "Point"), v8_ctor);
  }

  
  auto static 
  v8_ctor_fn(const v8::FunctionCallbackInfo<v8::Value>& info) -> void {
    v8::HandleScope scope(info.GetIsolate());

    auto point = new Point{0,0};

    //if (2 == info.Length()) {
    //  point->x = info[0]->Int32Value();
    //  point->y = info[1]->Int32Value();
    //}

    info.This()->SetInternalField(0, v8::External::New(info.GetIsolate(), point));
  };
};