js/public/shadow/Symbol.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 /* Shadow definition of |JS::Symbol| innards.  Do not use this directly! */
   8
   9 #ifndef js_shadow_Symbol_h
  10 #define js_shadow_Symbol_h
  11
  12 #include <stdint.h>  // uint32_t
  13
  14 namespace js {
  15 namespace gc {
  16 struct Cell;
  17 }  // namespace gc
  18 }  // namespace js
  19
  20 namespace JS {
  21
  22 namespace shadow {
  23
  24 struct Symbol {
  25   void* _1;
  26   uint32_t code_;
  27   static constexpr uint32_t WellKnownAPILimit = 0x80000000;
  28
  29   static bool isWellKnownSymbol(const js::gc::Cell* cell) {
  30     return reinterpret_cast<const Symbol*>(cell)->code_ < WellKnownAPILimit;
  31   }
  32 };
  33
  34 }  // namespace shadow
  35
  36 }  // namespace JS
  37
  38 #endif  // js_shadow_Symbol_h