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#include "myobject.h"
MyObject::MyObject() : env_(nullptr), wrapper_(nullptr) {}
MyObject::~MyObject() { napi_delete_reference(env_, wrapper_); }
void MyObject::Destructor(napi_env env,
void* nativeObject,
void* /*finalize_hint*/) {
MyObject* obj = static_cast<MyObject*>(nativeObject);
delete obj;
}
#define DECLARE_NAPI_METHOD(name, func) \
{ name, func, 0, 0, 0, napi_default, 0 }
napi_ref MyObject::constructor;
napi_status MyObject::Init(napi_env env) {
napi_status status;
napi_property_descriptor properties[] = {
DECLARE_NAPI_METHOD("plusOne", PlusOne),
};
napi_value cons;
status =
napi_define_class(env, "MyObject", New, nullptr, 1, properties, &cons);
if (status != napi_ok) return status;
status = napi_create_reference(env, cons, 1, &constructor);
if (status != napi_ok) return status;
return napi_ok;
}
void MyObject::New(napi_env env, napi_callback_info info) {
napi_status status;
napi_value args[1];
status = napi_get_cb_args(env, info, args, 1);
if (status != napi_ok) return;
napi_valuetype valuetype;
status = napi_typeof(env, args[0], &valuetype);
if (status != napi_ok) return;
MyObject* obj = new MyObject();
if (valuetype == napi_undefined) {
obj->counter_ = 0;
} else {
status = napi_get_value_double(env, args[0], &obj->counter_);
if (status != napi_ok) return;
}
napi_value jsthis;
status = napi_get_cb_this(env, info, &jsthis);
if (status != napi_ok) return;
obj->env_ = env;
status = napi_wrap(env,
jsthis,
obj,
MyObject::Destructor,
nullptr, /* finalize_hint */
&obj->wrapper_);
if (status != napi_ok) return;
status = napi_set_return_value(env, info, jsthis);
if (status != napi_ok) return;
}
napi_status MyObject::NewInstance(napi_env env,
napi_value arg,
napi_value* instance) {
napi_status status;
const int argc = 1;
napi_value argv[argc] = {arg};
napi_value cons;
status = napi_get_reference_value(env, constructor, &cons);
if (status != napi_ok) return status;
status = napi_new_instance(env, cons, argc, argv, instance);
if (status != napi_ok) return status;
return napi_ok;
}
void MyObject::PlusOne(napi_env env, napi_callback_info info) {
napi_status status;
napi_value jsthis;
status = napi_get_cb_this(env, info, &jsthis);
if (status != napi_ok) return;
MyObject* obj;
status = napi_unwrap(env, jsthis, reinterpret_cast<void**>(&obj));
if (status != napi_ok) return;
obj->counter_ += 1;
napi_value num;
status = napi_create_number(env, obj->counter_, &num);
if (status != napi_ok) return;
status = napi_set_return_value(env, info, num);
if (status != napi_ok) return;
}
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