dom/bindings/XrayExpandoClass.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 file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 /**
   8  * This file declares a macro for defining Xray expando classes and declares the
   9  * default Xray expando class.  The actual definition of that default class
  10  * lives elsewhere.
  11  */
  12 #ifndef mozilla_dom_XrayExpandoClass_h
  13 #define mozilla_dom_XrayExpandoClass_h
  14
  15 /*
  16  * maybeStatic_ Should be either `static` or nothing (because some Xray expando
  17  * classes are not static).
  18  *
  19  * name_ should be the name of the variable.
  20  *
  21  * extraSlots_ should be how many extra slots to give the class, in addition to
  22  * the ones Xray expandos want.
  23  */
  24 #define DEFINE_XRAY_EXPANDO_CLASS(maybeStatic_, name_, extraSlots_)           \
  25   maybeStatic_ const JSClass name_ = {                                        \
  26       "XrayExpandoObject",                                                    \
  27       JSCLASS_HAS_RESERVED_SLOTS(xpc::JSSLOT_EXPANDO_COUNT + (extraSlots_)) | \
  28           JSCLASS_FOREGROUND_FINALIZE,                                        \
  29       &xpc::XrayExpandoObjectClassOps}
  30
  31 namespace mozilla::dom {
  32
  33 extern const JSClass DefaultXrayExpandoObjectClass;
  34
  35 }  // namespace mozilla::dom
  36
  37 #endif /* mozilla_dom_XrayExpandoClass_h */