| // Copyright 2016 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| #include "src/runtime/runtime-utils.h" |
| |
| #include "src/debug/debug.h" |
| #include "src/elements.h" |
| #include "src/promise-utils.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| namespace { |
| |
| void PromiseRejectEvent(Isolate* isolate, Handle<JSPromise> promise, |
| Handle<Object> rejected_promise, Handle<Object> value, |
| bool debug_event) { |
| isolate->RunPromiseHook(PromiseHookType::kResolve, promise, |
| isolate->factory()->undefined_value()); |
| |
| if (isolate->debug()->is_active() && debug_event) { |
| isolate->debug()->OnPromiseReject(rejected_promise, value); |
| } |
| |
| // Report only if we don't actually have a handler. |
| if (!promise->has_handler()) { |
| isolate->ReportPromiseReject(Handle<JSObject>::cast(promise), value, |
| v8::kPromiseRejectWithNoHandler); |
| } |
| } |
| |
| } // namespace |
| |
| RUNTIME_FUNCTION(Runtime_PromiseRejectEventFromStack) { |
| DCHECK(args.length() == 2); |
| HandleScope scope(isolate); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| CONVERT_ARG_HANDLE_CHECKED(Object, value, 1); |
| |
| Handle<Object> rejected_promise = promise; |
| if (isolate->debug()->is_active()) { |
| // If the Promise.reject call is caught, then this will return |
| // undefined, which will be interpreted by PromiseRejectEvent |
| // as being a caught exception event. |
| rejected_promise = isolate->GetPromiseOnStackOnThrow(); |
| } |
| PromiseRejectEvent(isolate, promise, rejected_promise, value, true); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseRevokeReject) { |
| DCHECK(args.length() == 1); |
| HandleScope scope(isolate); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| // At this point, no revocation has been issued before |
| CHECK(!promise->has_handler()); |
| isolate->ReportPromiseReject(promise, Handle<Object>(), |
| v8::kPromiseHandlerAddedAfterReject); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| namespace { |
| void EnqueuePromiseReactionJob(Isolate* isolate, Handle<JSPromise> promise, |
| Handle<Object> value, Handle<Object> tasks, |
| Handle<Object> deferred, Handle<Object> status) { |
| Handle<Object> debug_id = isolate->factory()->undefined_value(); |
| Handle<Object> debug_name = isolate->factory()->undefined_value(); |
| if (isolate->debug()->is_active()) { |
| MaybeHandle<Object> maybe_result; |
| Handle<Object> deferred_obj(deferred); |
| |
| if (deferred->IsFixedArray()) { |
| deferred_obj = isolate->factory()->undefined_value(); |
| } |
| |
| Handle<Object> argv[] = {deferred_obj, status}; |
| maybe_result = Execution::TryCall( |
| isolate, isolate->promise_debug_get_info(), |
| isolate->factory()->undefined_value(), arraysize(argv), argv); |
| |
| Handle<Object> result; |
| if ((maybe_result).ToHandle(&result)) { |
| CHECK(result->IsJSArray()); |
| Handle<JSArray> array = Handle<JSArray>::cast(result); |
| ElementsAccessor* accessor = array->GetElementsAccessor(); |
| DCHECK(accessor->HasElement(array, 0)); |
| DCHECK(accessor->HasElement(array, 1)); |
| debug_id = accessor->Get(array, 0); |
| debug_name = accessor->Get(array, 1); |
| } |
| } |
| Handle<PromiseReactionJobInfo> info = |
| isolate->factory()->NewPromiseReactionJobInfo( |
| promise, value, tasks, deferred, debug_id, debug_name, |
| isolate->native_context()); |
| isolate->EnqueueMicrotask(info); |
| } |
| |
| void PromiseSet(Isolate* isolate, Handle<JSPromise> promise, int status, |
| Handle<Object> result) { |
| promise->set_status(status); |
| promise->set_result(*result); |
| promise->set_deferred(isolate->heap()->undefined_value()); |
| promise->set_fulfill_reactions(isolate->heap()->undefined_value()); |
| promise->set_reject_reactions(isolate->heap()->undefined_value()); |
| } |
| |
| void PromiseFulfill(Isolate* isolate, Handle<JSPromise> promise, |
| Handle<Smi> status, Handle<Object> value) { |
| // Check if there are any callbacks. |
| if (!promise->deferred()->IsUndefined(isolate)) { |
| Handle<Object> tasks((status->value() == kPromiseFulfilled) |
| ? promise->fulfill_reactions() |
| : promise->reject_reactions(), |
| isolate); |
| Handle<Object> deferred(promise->deferred(), isolate); |
| EnqueuePromiseReactionJob(isolate, promise, value, tasks, deferred, status); |
| } |
| |
| PromiseSet(isolate, promise, status->value(), value); |
| } |
| |
| } // namespace |
| |
| RUNTIME_FUNCTION(Runtime_PromiseReject) { |
| DCHECK(args.length() == 3); |
| HandleScope scope(isolate); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| CONVERT_ARG_HANDLE_CHECKED(Object, reason, 1); |
| CONVERT_BOOLEAN_ARG_CHECKED(debug_event, 2); |
| |
| PromiseRejectEvent(isolate, promise, promise, reason, debug_event); |
| |
| Handle<Smi> status(Smi::FromInt(kPromiseRejected), isolate); |
| PromiseFulfill(isolate, promise, status, reason); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseFulfill) { |
| DCHECK(args.length() == 3); |
| HandleScope scope(isolate); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| CONVERT_ARG_HANDLE_CHECKED(Smi, status, 1); |
| CONVERT_ARG_HANDLE_CHECKED(Object, value, 2); |
| PromiseFulfill(isolate, promise, status, value); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_EnqueuePromiseReactionJob) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 5); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| CONVERT_ARG_HANDLE_CHECKED(Object, value, 1); |
| CONVERT_ARG_HANDLE_CHECKED(Object, tasks, 2); |
| CONVERT_ARG_HANDLE_CHECKED(Object, deferred, 3); |
| CONVERT_ARG_HANDLE_CHECKED(Object, status, 4); |
| EnqueuePromiseReactionJob(isolate, promise, value, tasks, deferred, status); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_EnqueuePromiseResolveThenableJob) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 3); |
| CONVERT_ARG_HANDLE_CHECKED(JSObject, promise, 0); |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, resolution, 1); |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, then, 2); |
| |
| // TODO(gsathya): Add fast path for native promises with unmodified |
| // PromiseThen (which don't need these resolving functions, but |
| // instead can just call resolve/reject directly). |
| Handle<JSFunction> resolve, reject; |
| PromiseUtils::CreateResolvingFunctions( |
| isolate, promise, isolate->factory()->false_value(), &resolve, &reject); |
| |
| Handle<Object> debug_id, debug_name; |
| if (isolate->debug()->is_active()) { |
| debug_id = |
| handle(Smi::FromInt(isolate->GetNextDebugMicrotaskId()), isolate); |
| debug_name = isolate->factory()->PromiseResolveThenableJob_string(); |
| isolate->debug()->OnAsyncTaskEvent(isolate->factory()->enqueue_string(), |
| debug_id, |
| Handle<String>::cast(debug_name)); |
| } else { |
| debug_id = isolate->factory()->undefined_value(); |
| debug_name = isolate->factory()->undefined_value(); |
| } |
| |
| Handle<PromiseResolveThenableJobInfo> info = |
| isolate->factory()->NewPromiseResolveThenableJobInfo( |
| resolution, then, resolve, reject, debug_id, debug_name, |
| isolate->native_context()); |
| isolate->EnqueueMicrotask(info); |
| |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_EnqueueMicrotask) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, microtask, 0); |
| isolate->EnqueueMicrotask(microtask); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_RunMicrotasks) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 0); |
| isolate->RunMicrotasks(); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_CreateResolvingFunctions) { |
| HandleScope scope(isolate); |
| CONVERT_ARG_HANDLE_CHECKED(JSObject, promise, 0); |
| DCHECK(args.length() == 1); |
| Handle<JSFunction> resolve, reject; |
| |
| PromiseUtils::CreateResolvingFunctions( |
| isolate, promise, isolate->factory()->true_value(), &resolve, &reject); |
| |
| Handle<FixedArray> result = isolate->factory()->NewFixedArray(2); |
| result->set(0, *resolve); |
| result->set(1, *reject); |
| |
| return *result; |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseStatus) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| |
| return Smi::FromInt(promise->status()); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseResult) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| return promise->result(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseDeferred) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| |
| Handle<Object> deferred(promise->deferred(), isolate); |
| if (deferred->IsUndefined(isolate)) { |
| return isolate->heap()->undefined_value(); |
| } |
| |
| if (deferred->IsJSObject()) { |
| return *deferred; |
| } |
| |
| DCHECK(deferred->IsFixedArray()); |
| return *isolate->factory()->NewJSArrayWithElements( |
| Handle<FixedArray>::cast(deferred)); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseRejectReactions) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| |
| Handle<Object> reject_reactions(promise->reject_reactions(), isolate); |
| if (reject_reactions->IsUndefined(isolate)) { |
| return isolate->heap()->undefined_value(); |
| } |
| |
| if (reject_reactions->IsJSObject()) { |
| return *reject_reactions; |
| } |
| |
| DCHECK(reject_reactions->IsFixedArray()); |
| return *isolate->factory()->NewJSArrayWithElements( |
| Handle<FixedArray>::cast(reject_reactions)); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseMarkAsHandled) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| |
| promise->set_has_handler(true); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseHookInit) { |
| HandleScope scope(isolate); |
| DCHECK_EQ(2, args.length()); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| CONVERT_ARG_HANDLE_CHECKED(Object, parent, 1); |
| isolate->RunPromiseHook(PromiseHookType::kInit, promise, parent); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseHookResolve) { |
| HandleScope scope(isolate); |
| DCHECK_EQ(1, args.length()); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| isolate->RunPromiseHook(PromiseHookType::kResolve, promise, |
| isolate->factory()->undefined_value()); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseHookBefore) { |
| HandleScope scope(isolate); |
| DCHECK_EQ(1, args.length()); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| isolate->RunPromiseHook(PromiseHookType::kBefore, promise, |
| isolate->factory()->undefined_value()); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| RUNTIME_FUNCTION(Runtime_PromiseHookAfter) { |
| HandleScope scope(isolate); |
| DCHECK_EQ(1, args.length()); |
| CONVERT_ARG_HANDLE_CHECKED(JSPromise, promise, 0); |
| isolate->RunPromiseHook(PromiseHookType::kAfter, promise, |
| isolate->factory()->undefined_value()); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| } // namespace internal |
| } // namespace v8 |