diff options
Diffstat (limited to 'src/node_api.cc')
-rw-r--r-- | src/node_api.cc | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/node_api.cc b/src/node_api.cc index bec98e07ce..7a2b5bc48e 100644 --- a/src/node_api.cc +++ b/src/node_api.cc @@ -218,6 +218,14 @@ V8EscapableHandleScopeFromJsEscapableHandleScope( static_assert(sizeof(v8::Local<v8::Value>) == sizeof(napi_value), "Cannot convert between v8::Local<v8::Value> and napi_value"); +napi_deferred JsDeferredFromV8Persistent(v8::Persistent<v8::Value>* local) { + return reinterpret_cast<napi_deferred>(local); +} + +v8::Persistent<v8::Value>* V8PersistentFromJsDeferred(napi_deferred local) { + return reinterpret_cast<v8::Persistent<v8::Value>*>(local); +} + napi_value JsValueFromV8LocalValue(v8::Local<v8::Value> local) { return reinterpret_cast<napi_value>(*local); } @@ -774,6 +782,33 @@ napi_status Unwrap(napi_env env, return napi_ok; } +napi_status ConcludeDeferred(napi_env env, + napi_deferred deferred, + napi_value result, + bool is_resolved) { + NAPI_PREAMBLE(env); + CHECK_ARG(env, result); + + v8::Local<v8::Context> context = env->isolate->GetCurrentContext(); + v8::Persistent<v8::Value>* deferred_ref = + V8PersistentFromJsDeferred(deferred); + v8::Local<v8::Value> v8_deferred = + v8::Local<v8::Value>::New(env->isolate, *deferred_ref); + + auto v8_resolver = v8::Local<v8::Promise::Resolver>::Cast(v8_deferred); + + v8::Maybe<bool> success = is_resolved ? + v8_resolver->Resolve(context, v8impl::V8LocalValueFromJsValue(result)) : + v8_resolver->Reject(context, v8impl::V8LocalValueFromJsValue(result)); + + deferred_ref->Reset(); + delete deferred_ref; + + RETURN_STATUS_IF_FALSE(env, success.FromMaybe(false), napi_generic_failure); + + return GET_RETURN_STATUS(env); +} + } // end of namespace v8impl // Intercepts the Node-V8 module registration callback. Converts parameters @@ -3332,3 +3367,46 @@ napi_status napi_cancel_async_work(napi_env env, napi_async_work work) { return napi_clear_last_error(env); } + +NAPI_EXTERN napi_status napi_create_promise(napi_env env, + napi_deferred* deferred, + napi_value* promise) { + NAPI_PREAMBLE(env); + CHECK_ARG(env, deferred); + CHECK_ARG(env, promise); + + auto maybe = v8::Promise::Resolver::New(env->isolate->GetCurrentContext()); + CHECK_MAYBE_EMPTY(env, maybe, napi_generic_failure); + + auto v8_resolver = maybe.ToLocalChecked(); + auto v8_deferred = new v8::Persistent<v8::Value>(); + v8_deferred->Reset(env->isolate, v8_resolver); + + *deferred = v8impl::JsDeferredFromV8Persistent(v8_deferred); + *promise = v8impl::JsValueFromV8LocalValue(v8_resolver->GetPromise()); + return GET_RETURN_STATUS(env); +} + +NAPI_EXTERN napi_status napi_resolve_deferred(napi_env env, + napi_deferred deferred, + napi_value resolution) { + return v8impl::ConcludeDeferred(env, deferred, resolution, true); +} + +NAPI_EXTERN napi_status napi_reject_deferred(napi_env env, + napi_deferred deferred, + napi_value resolution) { + return v8impl::ConcludeDeferred(env, deferred, resolution, false); +} + +NAPI_EXTERN napi_status napi_is_promise(napi_env env, + napi_value promise, + bool* is_promise) { + CHECK_ENV(env); + CHECK_ARG(env, promise); + CHECK_ARG(env, is_promise); + + *is_promise = v8impl::V8LocalValueFromJsValue(promise)->IsPromise(); + + return napi_clear_last_error(env); +} |