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#include "node.h"
#include "v8.h"
#include "uv.h"
#include <assert.h>
#include <vector>
#include <memory>
namespace {
void RunInCallbackScope(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::Isolate* isolate = args.GetIsolate();
assert(args.Length() == 4);
assert(args[0]->IsObject());
assert(args[1]->IsNumber());
assert(args[2]->IsNumber());
assert(args[3]->IsFunction());
node::async_context asyncContext = {
args[1].As<v8::Number>()->Value(),
args[2].As<v8::Number>()->Value()
};
node::CallbackScope scope(isolate, args[0].As<v8::Object>(), asyncContext);
v8::Local<v8::Function> fn = args[3].As<v8::Function>();
v8::MaybeLocal<v8::Value> ret =
fn->Call(isolate->GetCurrentContext(), args[0], 0, nullptr);
if (!ret.IsEmpty())
args.GetReturnValue().Set(ret.ToLocalChecked());
}
static void Callback(uv_work_t* req, int ignored) {
v8::Isolate* isolate = v8::Isolate::GetCurrent();
v8::HandleScope scope(isolate);
node::CallbackScope callback_scope(isolate, v8::Object::New(isolate),
node::async_context{0, 0});
std::unique_ptr<v8::Global<v8::Promise::Resolver>> persistent {
static_cast<v8::Global<v8::Promise::Resolver>*>(req->data) };
v8::Local<v8::Promise::Resolver> local = persistent->Get(isolate);
local->Resolve(isolate->GetCurrentContext(),
v8::Undefined(isolate)).ToChecked();
delete req;
}
static void TestResolveAsync(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::Isolate* isolate = args.GetIsolate();
v8::Global<v8::Promise::Resolver>* persistent =
new v8::Global<v8::Promise::Resolver>(
isolate,
v8::Promise::Resolver::New(
isolate->GetCurrentContext()).ToLocalChecked());
uv_work_t* req = new uv_work_t;
req->data = static_cast<void*>(persistent);
uv_queue_work(node::GetCurrentEventLoop(isolate),
req,
[](uv_work_t*) {},
Callback);
v8::Local<v8::Promise::Resolver> local = persistent->Get(isolate);
args.GetReturnValue().Set(local->GetPromise());
}
void Initialize(v8::Local<v8::Object> exports) {
NODE_SET_METHOD(exports, "runInCallbackScope", RunInCallbackScope);
NODE_SET_METHOD(exports, "testResolveAsync", TestResolveAsync);
}
} // anonymous namespace
NODE_MODULE(NODE_GYP_MODULE_NAME, Initialize)
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