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/*
* Copyright (C) 2015 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.
*/
#ifndef DownloadID_h
#define DownloadID_h
#include "ArgumentCoder.h"
#include "ArgumentDecoder.h"
#include "ArgumentEncoder.h"
#include <wtf/HashTraits.h>
namespace WebKit {
class DownloadID {
public:
DownloadID()
{
}
explicit DownloadID(uint64_t downloadID)
: m_downloadID(downloadID)
{
}
bool operator==(DownloadID other) const { return m_downloadID == other.m_downloadID; }
bool operator!=(DownloadID other) const { return m_downloadID != other.m_downloadID; }
uint64_t downloadID() const { return m_downloadID; }
private:
uint64_t m_downloadID { 0 };
};
}
namespace IPC {
template<> struct ArgumentCoder<WebKit::DownloadID> {
static void encode(ArgumentEncoder& encoder, const WebKit::DownloadID& downloadID)
{
encoder << downloadID.downloadID();
}
static bool decode(ArgumentDecoder& decoder, WebKit::DownloadID& downloadID)
{
uint64_t id;
if (!decoder.decode(id))
return false;
downloadID = WebKit::DownloadID(id);
return true;
}
};
}
namespace WTF {
struct DownloadIDHash {
static unsigned hash(const WebKit::DownloadID& d) { return intHash(d.downloadID()); }
static bool equal(const WebKit::DownloadID& a, const WebKit::DownloadID& b) { return a.downloadID() == b.downloadID(); }
static const bool safeToCompareToEmptyOrDeleted = true;
};
template<> struct HashTraits<WebKit::DownloadID> : GenericHashTraits<WebKit::DownloadID> {
static WebKit::DownloadID emptyValue() { return { }; }
static void constructDeletedValue(WebKit::DownloadID& slot) { slot = WebKit::DownloadID(std::numeric_limits<uint64_t>::max()); }
static bool isDeletedValue(const WebKit::DownloadID& slot) { return slot.downloadID() == std::numeric_limits<uint64_t>::max(); }
};
template<> struct DefaultHash<WebKit::DownloadID> {
typedef DownloadIDHash Hash;
};
}
#endif /* DownloadID_h */
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