/* * 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 "Encoder.h" #include <WebCore/SharedBuffer.h> #include <wtf/Variant.h> namespace IPC { class SharedBufferDataReference { public: SharedBufferDataReference() = default; SharedBufferDataReference(const WebCore::SharedBuffer& buffer) : m_data(buffer) { } SharedBufferDataReference(const uint8_t* data, size_t size) : m_data(std::make_pair(data, size)) { } void encode(Encoder& encoder) const { switchOn(m_data, [encoder = &encoder] (const Ref<const WebCore::SharedBuffer>& buffer) mutable { uint64_t bufferSize = buffer->size(); encoder->reserve(bufferSize + sizeof(uint64_t)); *encoder << bufferSize; for (const auto& element : buffer.get()) encoder->encodeFixedLengthData(reinterpret_cast<const uint8_t*>(element.segment->data()), element.segment->size(), 1); }, [encoder = &encoder] (const std::pair<const uint8_t*, size_t>& pair) mutable { uint64_t bufferSize = pair.second; encoder->reserve(bufferSize + sizeof(uint64_t)); *encoder << bufferSize; encoder->encodeFixedLengthData(pair.first, pair.second, 1); } ); } private: Variant<std::pair<const uint8_t*, size_t>, Ref<const WebCore::SharedBuffer>> m_data; }; }