third_party/WebKit/Source/core/css/invalidation/StyleSheetInvalidationAnalysis.h

/*
 * Copyright (C) 2012 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef StyleSheetInvalidationAnalysis_h
#define StyleSheetInvalidationAnalysis_h

#include "platform/heap/Handle.h"
#include "wtf/HashSet.h"
#include "wtf/Vector.h"
#include "wtf/text/StringImpl.h"

namespace blink {

class StyleSheetContents;
class TreeScope;

class StyleSheetInvalidationAnalysis {
  STACK_ALLOCATED();
  WTF_MAKE_NONCOPYABLE(StyleSheetInvalidationAnalysis);

 public:
  StyleSheetInvalidationAnalysis(const TreeScope&,
                                 const HeapVector<Member<StyleSheetContents>>&);

  bool dirtiesAllStyle() const { return m_dirtiesAllStyle; }
  void invalidateStyle();

 private:
  void analyzeStyleSheet(StyleSheetContents*);

  Member<const TreeScope> m_treeScope;
  HashSet<StringImpl*> m_idScopes;
  HashSet<StringImpl*> m_classScopes;

  bool m_dirtiesAllStyle = false;
  bool m_addsKeyframes = false;
};

}  // namespace blink

#endif