mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
47 lines
1.9 KiB
C
47 lines
1.9 KiB
C
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/**
|
|
* This file defines various reserved slot indices used by JavaScript
|
|
* reflections of DOM objects.
|
|
*/
|
|
#ifndef mozilla_dom_DOMSlots_h
|
|
#define mozilla_dom_DOMSlots_h
|
|
|
|
// We use slot 0 for holding the raw object. This is safe for both
|
|
// globals and non-globals.
|
|
#define DOM_OBJECT_SLOT 0
|
|
|
|
// We use slot 1 for holding the expando object. This is not safe for globals
|
|
// until bug 760095 is fixed, so that bug blocks converting Window to new
|
|
// bindings.
|
|
#define DOM_XRAY_EXPANDO_SLOT 1
|
|
|
|
// We use slot 2 for holding either a JS::ObjectValue which points to the cached
|
|
// SOW or JS::UndefinedValue if this class doesn't need SOWs. This is not safe
|
|
// for globals until bug 760095 is fixed, so that bug blocks converting Window
|
|
// to new bindings.
|
|
#define DOM_OBJECT_SLOT_SOW 2
|
|
|
|
// NOTE: This is baked into the Ion JIT as 0 in codegen for LGetDOMProperty and
|
|
// LSetDOMProperty. Those constants need to be changed accordingly if this value
|
|
// changes.
|
|
#define DOM_PROTO_INSTANCE_CLASS_SLOT 0
|
|
|
|
// Interface objects store a number of reserved slots equal to
|
|
// DOM_INTERFACE_SLOTS_BASE + number of named constructors.
|
|
#define DOM_INTERFACE_SLOTS_BASE (DOM_XRAY_EXPANDO_SLOT + 1)
|
|
|
|
// Interface prototype objects store a number of reserved slots equal to
|
|
// DOM_INTERFACE_PROTO_SLOTS_BASE or DOM_INTERFACE_PROTO_SLOTS_BASE + 1 if a
|
|
// slot for the unforgeable holder is needed.
|
|
#define DOM_INTERFACE_PROTO_SLOTS_BASE (DOM_XRAY_EXPANDO_SLOT + 1)
|
|
|
|
static_assert(DOM_PROTO_INSTANCE_CLASS_SLOT != DOM_XRAY_EXPANDO_SLOT,
|
|
"Interface prototype object use both of these, so they must "
|
|
"not be the same slot.");
|
|
|
|
#endif /* mozilla_dom_DOMSlots_h */
|