js/src/frontend/SelfHostedIter.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  * This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef frontend_SelfHostedIter_h
   8 #define frontend_SelfHostedIter_h
   9
  10 namespace js::frontend {
  11
  12 // `for-of`, `for-await-of`, and spread operations are allowed on
  13 // self-hosted JS code only when the operand is explicitly marked with
  14 // `allowContentIter()`.
  15 //
  16 // This value is effectful only when emitting self-hosted JS code.
  17 enum class SelfHostedIter {
  18   // The operand is not marked.
  19   // Also means "don't care" for non-self-hosted JS case.
  20   Deny,
  21
  22   // The operand is marked.
  23   AllowContent,
  24
  25   // The operand is marked and the `@@iterator` method is on the stack.
  26   AllowContentWith,
  27
  28   // The operand is marked and the `next` method is on the stack.
  29   AllowContentWithNext,
  30 };
  31
  32 } /* namespace js::frontend */
  33
  34 #endif /* frontend_SelfHostedIter_h */