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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/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 = void (*)(uint8_t*, const void* context);
static Ref<Data> createWithoutCopying(std::span<const uint8_t> bytes, FreeDataFunction freeDataFunction, const void* context)
{
return adoptRef(*new Data(bytes, freeDataFunction, context));
}
static Ref<Data> create(std::span<const uint8_t> bytes)
{
uint8_t* copiedBytes = nullptr;
if (bytes.size()) {
copiedBytes = static_cast<uint8_t*>(fastMalloc(bytes.size()));
memcpy(copiedBytes, bytes.data(), bytes.size());
}
return createWithoutCopying({ copiedBytes, bytes.size() }, [] (uint8_t* bytes, const void*) {
if (bytes)
fastFree(static_cast<void*>(bytes));
}, nullptr);
}
static Ref<Data> create(const Vector<unsigned char>& buffer)
{
return create(buffer.span());
}
static Ref<Data> create(Vector<unsigned char>&& buffer)
{
auto bufferSize = buffer.size();
auto bufferPointer = buffer.releaseBuffer().leakPtr();
return createWithoutCopying({ bufferPointer, bufferSize }, [] (uint8_t* bytes, const void*) {
if (bytes)
WTF::VectorMalloc::free(bytes);
}, nullptr);
}
#if PLATFORM(COCOA)
static Ref<Data> createWithoutCopying(RetainPtr<NSData>);
#endif
~Data()
{
m_freeDataFunction(const_cast<uint8_t*>(m_span.data()), m_context);
}
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, const void* context)
: m_span(span)
, m_freeDataFunction(freeDataFunction)
, m_context(context)
{
}
std::span<const uint8_t> m_span;
FreeDataFunction m_freeDataFunction { nullptr };
const void* m_context { nullptr };
};
} // namespace API
SPECIALIZE_TYPE_TRAITS_API_OBJECT(Data);
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