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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 "CachedResourceClient.h"
#include "CachedResourceHandle.h"
#include "CachedScript.h"
#include "CachedScriptFetcher.h"
#include "SharedBuffer.h"
#include <JavaScriptCore/SourceProvider.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class WebAssemblyCachedScriptSourceProvider final : public JSC::BaseWebAssemblySourceProvider, public CachedResourceClient {
WTF_MAKE_TZONE_ALLOCATED(WebAssemblyCachedScriptSourceProvider);
public:
static Ref<WebAssemblyCachedScriptSourceProvider> create(CachedScript* cachedScript, Ref<CachedScriptFetcher>&& scriptFetcher)
{
return adoptRef(*new WebAssemblyCachedScriptSourceProvider(cachedScript, JSC::SourceOrigin { cachedScript->response().url(), WTFMove(scriptFetcher) }, cachedScript->response().url().string()));
}
virtual ~WebAssemblyCachedScriptSourceProvider()
{
m_cachedScript->removeClient(*this);
}
unsigned hash() const final { return m_cachedScript->scriptHash(); }
StringView source() const final { return m_cachedScript->script(); }
size_t size() const final { return m_buffer ? m_buffer->size() : 0; }
const uint8_t* data() final
{
if (!m_buffer)
return nullptr;
if (!m_buffer->isContiguous())
m_buffer = RefPtr { m_buffer }->makeContiguous();
return Ref { downcast<SharedBuffer>(*m_buffer) }->span().data();
}
void lockUnderlyingBuffer() final
{
ASSERT(!m_buffer);
m_buffer = m_cachedScript->resourceBuffer();
}
void unlockUnderlyingBuffer() final
{
ASSERT(m_buffer);
m_buffer = nullptr;
}
private:
WebAssemblyCachedScriptSourceProvider(CachedScript* cachedScript, const JSC::SourceOrigin& sourceOrigin, String sourceURL)
: BaseWebAssemblySourceProvider(sourceOrigin, WTFMove(sourceURL))
, m_cachedScript(cachedScript)
, m_buffer(nullptr)
{
m_cachedScript->addClient(*this);
}
CachedResourceHandle<CachedScript> m_cachedScript;
RefPtr<FragmentedSharedBuffer> m_buffer;
};
} // namespace WebCore
#endif // ENABLE(WEBASSEMBLY)
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