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/*
* Copyright (C) 2010 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 "APIObject.h"
#include <wtf/Function.h>
#include <wtf/StdLibExtras.h>
#include <wtf/Vector.h>
#if PLATFORM(COCOA)
#include <wtf/RetainPtr.h>
#endif
OBJC_CLASS NSData;
namespace API {
class Data : public ObjectImpl<API::Object::Type::Data> {
public:
using FreeDataFunction = WTF::Function<void()>;
static Ref<Data> createWithoutCopying(std::span<const uint8_t> bytes, FreeDataFunction&& freeDataFunction)
{
return adoptRef(*new Data(bytes, WTFMove(freeDataFunction)));
}
static Ref<Data> create(std::span<const uint8_t> bytes)
{
MallocSpan<uint8_t> copiedBytes;
if (!bytes.empty()) {
copiedBytes = MallocSpan<uint8_t>::malloc(bytes.size_bytes());
memcpySpan(copiedBytes.mutableSpan(), bytes);
}
auto data = copiedBytes.span();
return createWithoutCopying(data, [copiedBytes = WTFMove(copiedBytes)] () { });
}
static Ref<Data> create(const Vector<unsigned char>& buffer)
{
return create(buffer.span());
}
static Ref<Data> create(Vector<unsigned char>&& vector)
{
auto buffer = vector.releaseBuffer();
auto span = buffer.span();
return createWithoutCopying(span, [buffer = WTFMove(buffer)] { });
}
#if PLATFORM(COCOA)
static Ref<Data> createWithoutCopying(NSData *);
#endif
~Data()
{
m_freeDataFunction();
}
size_t size() const { return m_span.size(); }
std::span<const uint8_t> span() const { return m_span; }
private:
Data(std::span<const uint8_t> span, FreeDataFunction&& freeDataFunction)
: m_span(span)
, m_freeDataFunction(WTFMove(freeDataFunction))
{
}
std::span<const uint8_t> m_span;
FreeDataFunction m_freeDataFunction;
};
} // namespace API
SPECIALIZE_TYPE_TRAITS_API_OBJECT(Data);
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