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/*
* Copyright (C) 2025 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 "JSFunction.h"
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC {
class JSFunctionWithFields final : public JSFunction {
friend class JIT;
friend class VM;
public:
using Base = JSFunction;
static constexpr unsigned StructureFlags = Base::StructureFlags;
static constexpr unsigned numberOfInternalFields = 2;
enum class Field : unsigned {
ExecutorResolve = 0,
ExecutorReject = 1,
ResolvingPromise = 0,
ResolvingOther = 1,
FirstResolvingPromise = 0,
ResolvingWithoutPromiseContext = 0,
ResolvingWithoutPromiseOther = 1,
};
DECLARE_INFO;
DECLARE_VISIT_CHILDREN;
static JSFunctionWithFields* create(VM&, JSGlobalObject*, NativeExecutable*, unsigned length, const String& name);
template<typename CellType, SubspaceAccess mode>
static GCClient::IsoSubspace* subspaceFor(VM& vm)
{
return vm.functionWithFieldsSpace<mode>();
}
static Structure* createStructure(VM&, JSGlobalObject*, JSValue);
JSValue getField(Field index) { return fields()[static_cast<unsigned>(index)].get(); }
void setField(VM& vm, Field index, JSValue value) { fields()[static_cast<unsigned>(index)].set(vm, this, value); }
private:
std::span<WriteBarrier<Unknown>, numberOfInternalFields> fields()
{
return std::span<WriteBarrier<Unknown>, numberOfInternalFields> { m_internalFields, numberOfInternalFields };
}
JSFunctionWithFields(VM&, NativeExecutable*, JSGlobalObject*, Structure*);
WriteBarrier<Unknown> m_internalFields[numberOfInternalFields] { };
};
} // namespace JSC
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
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