/* * Copyright (C) 2018 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/Optional.h> namespace WebCore { // Frame identifier that is unique across all WebContent processes. struct GlobalFrameIdentifier { uint64_t pageID; uint64_t frameID; template<class Encoder> void encode(Encoder&) const; template<class Decoder> static std::optional<GlobalFrameIdentifier> decode(Decoder&); }; template<class Encoder> void GlobalFrameIdentifier::encode(Encoder& encoder) const { encoder << pageID << frameID; } template<class Decoder> std::optional<GlobalFrameIdentifier> GlobalFrameIdentifier::decode(Decoder& decoder) { std::optional<uint64_t> pageID; decoder >> pageID; if (!pageID) return std::nullopt; std::optional<uint64_t> frameID; decoder >> frameID; if (!frameID) return std::nullopt; return { { WTFMove(*pageID), WTFMove(*frameID) } }; } } // namespace WebCore