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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
/*
* Forward declarations to avoid including all of nsStyleStruct.h.
*/
#ifndef nsStyleStructFwd_h_
#define nsStyleStructFwd_h_
#include "nsStyleStructList.h"
namespace mozilla {
enum class StyleStructID : uint32_t {
/*
* Define the constants eStyleStruct_Font, etc.
*
* The C++ standard, section 7.2, guarantees that enums begin with 0 and
* increase by 1.
*
* Note that we rely on the inherited structs being before the rest in
* ComputedStyle.
*/
#define ENUM_ENTRY(name) name,
FOR_EACH_STYLE_STRUCT(ENUM_ENTRY, ENUM_ENTRY)
#undef ENUM_ENTRY
};
struct StyleStructConstants {
static const uint32_t kStyleStructCount =
#define COUNT_STRUCT(name) 1 +
FOR_EACH_STYLE_STRUCT(COUNT_STRUCT, COUNT_STRUCT)
#undef COUNT_STRUCT
0;
static const uint32_t kInheritedStyleStructCount =
#define COUNT_INHERITED(name) 1 +
#define COUNT_RESET(name)
FOR_EACH_STYLE_STRUCT(COUNT_INHERITED, COUNT_RESET)
#undef COUNT_INHERITED
#undef COUNT_RESET
0;
static const uint32_t kResetStyleStructCount =
#define COUNT_INHERITED(name)
#define COUNT_RESET(name) 1 +
FOR_EACH_STYLE_STRUCT(COUNT_INHERITED, COUNT_RESET)
#undef COUNT_INHERITED
#undef COUNT_RESET
0;
static_assert(kStyleStructCount <= 32, "Bitmasks must be bigger!");
static const uint32_t kAllStructsMask = (1 << kStyleStructCount) - 1;
static const uint32_t kInheritedStructsMask =
(1 << kInheritedStyleStructCount) - 1;
static const uint32_t kResetStructsMask =
kAllStructsMask & (~kInheritedStructsMask);
static uint32_t BitFor(StyleStructID aID) {
return 1 << static_cast<uint32_t>(aID);
}
};
} // namespace mozilla
#endif /* nsStyleStructFwd_h_ */
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