layout/style/nsHTMLCSSStyleSheet.h
author Nika Layzell <nika@thelayzells.com>
Tue, 25 Sep 2018 17:34:53 +0200
changeset 507828 5e6dae0c1e5a4939ccd406f14607f7fafffd45a7
parent 465329 8e5206684eea8da76d938de3c02c3e8c240e7c9b
child 508163 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1448426 - Wrap windows.h to avoid problematic define statements, r=froydnj,glandium By default, windows.h exposes a large number of problematic define statements which are UpperCamelCase, such as a define from `CreateWindow` to `CreateWindow{A,W}`. As many of these names are generic (e.g. CreateFile, CreateWindow), they can mess up Gecko code that may legitimately have its own methods with the same names. The header also defines some traditional SCREAMING_SNAKE_CASE defines which can mess up our code by conflicting with local values. This patch adds a simple code generator which generates wrappers for these defines, and uses them to wrap the windows.h wrapper using the `stl_wrappers` mechanism, allowing us to use windows.h in more places. Differential Revision: https://phabricator.services.mozilla.com/D10932

/* -*- 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/. */

/*
 * style sheet and style rule processor representing style attributes
 */

#ifndef nsHTMLCSSStyleSheet_h_
#define nsHTMLCSSStyleSheet_h_

#include "mozilla/Attributes.h"
#include "mozilla/MemoryReporting.h"

#include "nsDataHashtable.h"

class nsRuleWalker;
struct MiscContainer;

namespace mozilla {
enum class CSSPseudoElementType : uint8_t;
namespace dom {
class Element;
} // namespace dom
} // namespace mozilla

class nsHTMLCSSStyleSheet final
{
public:
  nsHTMLCSSStyleSheet();

  NS_INLINE_DECL_REFCOUNTING(nsHTMLCSSStyleSheet)

  void CacheStyleAttr(const nsAString& aSerialized, MiscContainer* aValue);
  void EvictStyleAttr(const nsAString& aSerialized, MiscContainer* aValue);
  MiscContainer* LookupStyleAttr(const nsAString& aSerialized);

private:
  ~nsHTMLCSSStyleSheet();

  nsHTMLCSSStyleSheet(const nsHTMLCSSStyleSheet& aCopy) = delete;
  nsHTMLCSSStyleSheet& operator=(const nsHTMLCSSStyleSheet& aCopy) = delete;

protected:
  nsDataHashtable<nsStringHashKey, MiscContainer*> mCachedStyleAttrs;
};

#endif /* !defined(nsHTMLCSSStyleSheet_h_) */