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/*
* Copyright (C) 2022 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 "ArgumentCoders.h"
#include <wtf/HashTraits.h>
#include <wtf/text/WTFString.h>
namespace WTF {
class TextStream;
}
namespace WebKit {
struct WebFoundTextRange {
struct DOMData {
uint64_t location { 0 };
uint64_t length { 0 };
bool operator==(const DOMData& other) const = default;
};
struct PDFData {
uint64_t startPage { 0 };
uint64_t startOffset { 0 };
uint64_t endPage { 0 };
uint64_t endOffset { 0 };
bool operator==(const PDFData& other) const = default;
unsigned hash() const;
};
Variant<DOMData, PDFData> data { DOMData { } };
AtomString frameIdentifier;
uint64_t order { 0 };
unsigned hash() const;
bool operator==(const WebFoundTextRange& other) const;
};
TextStream& operator<<(TextStream&, const WebKit::WebFoundTextRange::PDFData&);
} // namespace WebKit
namespace WTF {
struct WebFoundTextRangePDFDataHash {
static unsigned hash(const WebKit::WebFoundTextRange::PDFData& data) { return data.hash(); }
static bool equal(const WebKit::WebFoundTextRange::PDFData& a, const WebKit::WebFoundTextRange::PDFData& b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = true;
};
template<> struct HashTraits<WebKit::WebFoundTextRange::PDFData> : GenericHashTraits<WebKit::WebFoundTextRange::PDFData> {
static constexpr bool emptyValueIsZero = false;
static constexpr bool needsDeletedValue = true;
private:
static constexpr auto sentinelUnit { std::numeric_limits<uint64_t>::max() };
static constexpr WebKit::WebFoundTextRange::PDFData sentinel { sentinelUnit, sentinelUnit, sentinelUnit, sentinelUnit };
static constexpr auto deletedSentinelUnit { sentinelUnit - 1 };
static constexpr WebKit::WebFoundTextRange::PDFData deletedSentinel { deletedSentinelUnit, deletedSentinelUnit, deletedSentinelUnit, deletedSentinelUnit };
public:
static WebKit::WebFoundTextRange::PDFData emptyValue()
{
return sentinel;
}
static bool isEmptyValue(const WebKit::WebFoundTextRange::PDFData& data)
{
return data == sentinel;
}
static void constructDeletedValue(WebKit::WebFoundTextRange::PDFData& slot)
{
slot = deletedSentinel;
}
static bool isDeletedValue(const WebKit::WebFoundTextRange::PDFData& data)
{
return data == deletedSentinel;
}
};
struct WebFoundTextRangeHash {
static unsigned hash(const WebKit::WebFoundTextRange& range) { return range.hash(); }
static bool equal(const WebKit::WebFoundTextRange& a, const WebKit::WebFoundTextRange& b) { return a == b; }
static const bool safeToCompareToEmptyOrDeleted = true;
};
template<> struct HashTraits<WebKit::WebFoundTextRange> : GenericHashTraits<WebKit::WebFoundTextRange> {
static WebKit::WebFoundTextRange emptyValue() { return { }; }
static void constructDeletedValue(WebKit::WebFoundTextRange& slot) { new (NotNull, &slot.frameIdentifier) AtomString { HashTableDeletedValue }; }
static bool isDeletedValue(const WebKit::WebFoundTextRange& range) { return range.frameIdentifier.isHashTableDeletedValue(); }
};
template<> struct DefaultHash<WebKit::WebFoundTextRange::PDFData> : WebFoundTextRangePDFDataHash { };
template<> struct DefaultHash<WebKit::WebFoundTextRange> : WebFoundTextRangeHash { };
}
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