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/*
* Copyright (C) 2022 Igalia S.L. All rights reserved.
* Copyright (C) 2024 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. ``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
* 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
#if ENABLE(WEBASSEMBLY)
#include "ScriptBufferSourceProvider.h"
#include <JavaScriptCore/SourceProvider.h>
namespace WebCore {
class WebAssemblyScriptBufferSourceProvider final : public JSC::BaseWebAssemblySourceProvider, public AbstractScriptBufferHolder {
WTF_MAKE_TZONE_ALLOCATED(WebAssemblyScriptBufferSourceProvider);
public:
static Ref<WebAssemblyScriptBufferSourceProvider> create(const ScriptBuffer& scriptBuffer, URL&& sourceURL, Ref<JSC::ScriptFetcher>&& scriptFetcher)
{
return adoptRef(*new WebAssemblyScriptBufferSourceProvider(scriptBuffer, JSC::SourceOrigin { WTFMove(sourceURL), WTFMove(scriptFetcher) }, sourceURL.string()));
}
unsigned hash() const final
{
return m_source.impl()->hash();
}
StringView source() const final
{
return m_source;
}
size_t size() const final { return m_buffer ? m_buffer->size() : 0; }
const uint8_t* data() final
{
if (!m_buffer)
return nullptr;
ASSERT(m_buffer->isContiguous());
return downcast<SharedBuffer>(*m_buffer).span().data();
}
void lockUnderlyingBuffer() final
{
ASSERT(!m_buffer);
m_buffer = m_scriptBuffer.buffer();
if (!m_buffer)
return;
if (!m_buffer->isContiguous())
m_buffer = m_buffer->makeContiguous();
}
void unlockUnderlyingBuffer() final
{
ASSERT(m_buffer);
m_buffer = nullptr;
}
void clearDecodedData() final { }
void tryReplaceScriptBuffer(const ScriptBuffer& scriptBuffer) final
{
if (m_scriptBuffer != scriptBuffer)
return;
m_scriptBuffer = scriptBuffer;
}
private:
WebAssemblyScriptBufferSourceProvider(const ScriptBuffer& scriptBuffer, const JSC::SourceOrigin& sourceOrigin, String sourceURL)
: BaseWebAssemblySourceProvider(sourceOrigin, WTFMove(sourceURL))
, m_scriptBuffer(scriptBuffer)
, m_buffer(nullptr)
, m_source("[WebAssembly source]"_s)
{
}
ScriptBuffer m_scriptBuffer;
RefPtr<const FragmentedSharedBuffer> m_buffer;
String m_source;
};
} // namespace WebCore
#endif // ENABLE(WEBASSEMBLY)
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