change the directory structurejarred/rename

1 files changed, 114 insertions, 0 deletions

diff --git a/src/bun.js/bindings/webcore/BufferSource.h b/src/bun.js/bindings/webcore/BufferSource.h
new file mode 100644
index 000000000..ee78e38d1
--- /dev/null
+++ b/src/bun.js/bindings/webcore/BufferSource.h
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2016 Igalia S.L.
+ * Copyright (C) 2021 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 "JavaScriptCore/ArrayBuffer.h"
+#include "JavaScriptCore/ArrayBufferView.h"
+#include "wtf/RefPtr.h"
+#include <variant>
+
+namespace WebCore {
+
+class BufferSource {
+public:
+    using VariantType = std::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 std::visit([](auto& buffer) -> const uint8_t* {
+            return buffer ? static_cast<const uint8_t*>(buffer->data()) : nullptr;
+        },
+            m_variant);
+    }
+
+    void* mutableData() const
+    {
+        return std::visit([](auto& buffer) -> void* {
+            return buffer->data();
+        },
+            m_variant);
+    }
+
+    size_t length() const
+    {
+        return std::visit([](auto& buffer) -> size_t {
+            return buffer ? buffer->byteLength() : 0;
+        },
+            m_variant);
+    }
+
+    template<class Encoder> void encode(Encoder&) const;
+    template<class Decoder> static std::optional<BufferSource> decode(Decoder&);
+
+private:
+    VariantType m_variant;
+};
+
+template<class Encoder>
+void BufferSource::encode(Encoder& encoder) const
+{
+    encoder << static_cast<uint64_t>(length());
+    if (!length())
+        return;
+
+    encoder.encodeFixedLengthData(data(), length() * sizeof(uint8_t), alignof(uint8_t));
+}
+
+template<class Decoder>
+std::optional<BufferSource> BufferSource::decode(Decoder& decoder)
+{
+    std::optional<uint64_t> size;
+    decoder >> size;
+    if (!size)
+        return std::nullopt;
+    if (!*size)
+        return BufferSource();
+
+    auto dataSize = CheckedSize { *size };
+    if (UNLIKELY(dataSize.hasOverflowed()))
+        return std::nullopt;
+
+    const uint8_t* data = decoder.decodeFixedLengthReference(dataSize, alignof(uint8_t));
+    if (!data)
+        return std::nullopt;
+    return BufferSource(JSC::ArrayBuffer::tryCreate(static_cast<const void*>(data), dataSize.value()));
+}
+
+inline BufferSource toBufferSource(const uint8_t* data, size_t length)
+{
+    return BufferSource(JSC::ArrayBuffer::tryCreate(data, length));
+}
+
+} // namespace WebCore