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#include <js_native_api.h>
#include <stdio.h>
#include <stdlib.h>
#include "../common.h"
#include "../entry_point.h"
typedef struct {
size_t value;
bool print;
napi_ref js_cb_ref;
} AddonData;
static napi_value Increment(napi_env env, napi_callback_info info) {
AddonData* data;
napi_value result;
NODE_API_CALL(env, napi_get_instance_data(env, (void**)&data));
NODE_API_CALL(env, napi_create_uint32(env, ++data->value, &result));
return result;
}
static void DeleteAddonData(napi_env env, void* raw_data, void* hint) {
AddonData* data = raw_data;
if (data->print) {
printf("deleting addon data\n");
}
if (data->js_cb_ref != NULL) {
NODE_API_CALL_RETURN_VOID(env, napi_delete_reference(env, data->js_cb_ref));
}
free(data);
}
static napi_value SetPrintOnDelete(napi_env env, napi_callback_info info) {
AddonData* data;
NODE_API_CALL(env, napi_get_instance_data(env, (void**)&data));
data->print = true;
return NULL;
}
static void TestFinalizer(napi_env env, void* raw_data, void* hint) {
(void) raw_data;
(void) hint;
AddonData* data;
NODE_API_CALL_RETURN_VOID(env, napi_get_instance_data(env, (void**)&data));
napi_value js_cb, undefined;
NODE_API_CALL_RETURN_VOID(env,
napi_get_reference_value(env, data->js_cb_ref, &js_cb));
NODE_API_CALL_RETURN_VOID(env, napi_get_undefined(env, &undefined));
NODE_API_CALL_RETURN_VOID(env,
napi_call_function(env, undefined, js_cb, 0, NULL, NULL));
NODE_API_CALL_RETURN_VOID(env, napi_delete_reference(env, data->js_cb_ref));
data->js_cb_ref = NULL;
}
static napi_value ObjectWithFinalizer(napi_env env, napi_callback_info info) {
AddonData* data;
napi_value result, js_cb;
size_t argc = 1;
NODE_API_CALL(env, napi_get_instance_data(env, (void**)&data));
NODE_API_ASSERT(env, data->js_cb_ref == NULL, "reference must be NULL");
NODE_API_CALL(env, napi_get_cb_info(env, info, &argc, &js_cb, NULL, NULL));
NODE_API_CALL(env, napi_create_object(env, &result));
NODE_API_CALL(env,
napi_add_finalizer(env, result, NULL, TestFinalizer, NULL, NULL));
NODE_API_CALL(env, napi_create_reference(env, js_cb, 1, &data->js_cb_ref));
return result;
}
EXTERN_C_START
napi_value Init(napi_env env, napi_value exports) {
AddonData* data = malloc(sizeof(*data));
data->value = 41;
data->print = false;
data->js_cb_ref = NULL;
NODE_API_CALL(env, napi_set_instance_data(env, data, DeleteAddonData, NULL));
napi_property_descriptor props[] = {
DECLARE_NODE_API_PROPERTY("increment", Increment),
DECLARE_NODE_API_PROPERTY("setPrintOnDelete", SetPrintOnDelete),
DECLARE_NODE_API_PROPERTY("objectWithFinalizer", ObjectWithFinalizer),
};
NODE_API_CALL(env,
napi_define_properties(
env, exports, sizeof(props) / sizeof(*props), props));
return exports;
}
EXTERN_C_END
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