src/objects/js-disposable-stack.tq

// Copyright 2024 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.

extern enum DisposableStackState extends uint31 { kDisposed, kPending }
extern enum DisposeMethodCallType extends uint31 {
  kValueIsReceiver,
  kValueIsArgument
}
extern enum DisposeMethodHint extends uint31 { kSyncDispose, kAsyncDispose }
extern enum DisposableStackResourcesType extends uint31 {
  kAllSync,
  kAtLeastOneAsync
}

bitfield struct DisposableStackStatus extends uint31 {
  state: DisposableStackState: 1 bit;
  needs_await: bool: 1 bit;
  has_awaited: bool: 1 bit;
  suppressed_error_created: bool: 1 bit;
  length: int32: 27 bit;
}

extern class JSDisposableStackBase extends JSObject {
  // In the stack, [i] is the value that the initializer evaluates to, [i+1]
  // is dispose method, and [i+2] contains SmiTagged of an integer containing
  // two CallTypeBit and HintBit bitfields. `disposablestack.prototype.adopt` is
  // the only case that the value is the argument of method (CallType =
  // `kValueIsArgument`).
  stack: FixedArray;
  status: SmiTagged<DisposableStackStatus>;
  error: Object|Hole;
  error_message: Object|Hole;
}

extern class JSSyncDisposableStack extends JSDisposableStackBase {}

extern class JSAsyncDisposableStack extends JSDisposableStackBase {}