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/*
* Copyright (C) 2015-2023 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 <wtf/Hasher.h>
#include <wtf/Vector.h>
namespace WebCore {
namespace ContentExtensions {
struct HashableActionList {
enum DeletedValueTag { DeletedValue };
explicit HashableActionList(DeletedValueTag) { state = Deleted; }
enum EmptyValueTag { EmptyValue };
explicit HashableActionList(EmptyValueTag) { state = Empty; }
template<typename AnyVectorType>
explicit HashableActionList(const AnyVectorType& otherActions)
: actions(otherActions)
, state(Valid)
{
std::sort(actions.begin(), actions.end());
SuperFastHash hasher;
hasher.addCharactersAssumingAligned(reinterpret_cast<const UChar*>(actions.data()), actions.size() * sizeof(uint64_t) / sizeof(UChar));
hash = hasher.hash();
}
bool isEmptyValue() const { return state == Empty; }
bool isDeletedValue() const { return state == Deleted; }
bool operator==(const HashableActionList& other) const
{
return state == other.state && actions == other.actions;
}
Vector<uint64_t> actions;
unsigned hash;
enum {
Valid,
Empty,
Deleted
} state;
};
struct HashableActionListHash {
static unsigned hash(const HashableActionList& actionKey)
{
return actionKey.hash;
}
static bool equal(const HashableActionList& a, const HashableActionList& b)
{
return a == b;
}
static const bool safeToCompareToEmptyOrDeleted = false;
};
struct HashableActionListHashTraits : public WTF::CustomHashTraits<HashableActionList> {
static const bool emptyValueIsZero = false;
};
} // namespace ContentExtensions
} // namespace WebCore
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