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/*
* Copyright (C) 2020 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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.
*/
#pragma once
#include "CSSValueKeywords.h"
namespace WebCore {
struct CSSValueKey {
unsigned hash() const;
friend bool operator==(const CSSValueKey&, const CSSValueKey&) = default;
unsigned cssValueID;
bool useDarkAppearance;
bool useElevatedUserInterfaceLevel;
};
inline unsigned CSSValueKey::hash() const
{
return cssValueID;
}
} // namespace WebCore
namespace WTF {
struct CSSValueKeyHash {
static unsigned hash(const WebCore::CSSValueKey& key) { return key.hash(); }
static bool equal(const WebCore::CSSValueKey& a, const WebCore::CSSValueKey& b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = true;
};
template<> struct HashTraits<WebCore::CSSValueKey> : GenericHashTraits<WebCore::CSSValueKey> {
static WebCore::CSSValueKey emptyValue() { return WebCore::CSSValueKey { WebCore::CSSValueInvalid, false, false}; }
static void constructDeletedValue(WebCore::CSSValueKey& slot) { new (NotNull, &slot) WebCore::CSSValueKey { WebCore::CSSValueInvalid, true, true}; }
static bool isDeletedValue(const WebCore::CSSValueKey& slot) { return slot.cssValueID == WebCore::CSSValueInvalid && slot.useDarkAppearance && slot.useElevatedUserInterfaceLevel; }
};
template<> struct DefaultHash<WebCore::CSSValueKey> : CSSValueKeyHash { };
} // namespace WTF
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