/* * Copyright (C) 2016 Igalia S.L. * * 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 <JavaScriptCore/ArrayBuffer.h> #include <JavaScriptCore/ArrayBufferView.h> #include <wtf/RefPtr.h> #include <wtf/Variant.h> namespace WebCore { class BufferSource { public: using VariantType = WTF::Variant<RefPtr<JSC::ArrayBufferView>, RefPtr<JSC::ArrayBuffer>>; BufferSource() { } BufferSource(VariantType&& variant) : m_variant(WTFMove(variant)) { } const VariantType& variant() const { return m_variant; } const uint8_t* data() const { return WTF::visit([](auto& buffer) -> const uint8_t* { return buffer ? static_cast<const uint8_t*>(buffer->data()) : nullptr; }, m_variant); } size_t length() const { return WTF::visit([](auto& buffer) -> size_t { return buffer ? buffer->byteLength() : 0; }, m_variant); } private: VariantType m_variant; }; } // namespace WebCore