| /* |
| * 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 "Decoder.h" |
| #include "Encoder.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(Encoder& encoder, const WebKit::DownloadID& downloadID) |
| { |
| encoder << downloadID.downloadID(); |
| } |
| static bool decode(Decoder& 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 */ |