mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2024-11-23 04:09:40 +00:00
106 lines
3.8 KiB
C++
106 lines
3.8 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "JSGenerator.h"
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#include "JSInternalFieldObjectImpl.h"
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namespace JSC {
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class JSAsyncGenerator final : public JSInternalFieldObjectImpl<8> {
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public:
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using Base = JSInternalFieldObjectImpl<8>;
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// JSAsyncGenerator has one inline storage slot, which is pointing internalField(0).
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static size_t allocationSize(Checked<size_t> inlineCapacity)
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{
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ASSERT_UNUSED(inlineCapacity, inlineCapacity == 0U);
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return sizeof(JSAsyncGenerator);
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}
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template<typename CellType, SubspaceAccess mode>
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static IsoSubspace* subspaceFor(VM& vm)
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{
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return vm.asyncGeneratorSpace<mode>();
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}
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enum class AsyncGeneratorState : int32_t {
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Completed = -1,
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Executing = -2,
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SuspendedStart = -3,
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SuspendedYield = -4,
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AwaitingReturn = -5,
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};
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static_assert(static_cast<int32_t>(AsyncGeneratorState::Completed) == static_cast<int32_t>(JSGenerator::GeneratorState::Completed));
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static_assert(static_cast<int32_t>(AsyncGeneratorState::Executing) == static_cast<int32_t>(JSGenerator::GeneratorState::Executing));
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enum class AsyncGeneratorSuspendReason : int32_t {
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None = 0,
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Yield = -1,
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Await = -2
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};
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enum class Field : uint32_t {
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// FIXME: JSAsyncGenerator should support PolyProto, since generator tends to be created with poly proto mode.
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// We reserve the first internal field for PolyProto property. This offset is identical to JSFinalObject's first inline storage slot which will be used for PolyProto.
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PolyProto = 0,
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State,
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Next,
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This,
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Frame,
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SuspendReason,
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QueueFirst,
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QueueLast,
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};
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static_assert(numberOfInternalFields == 8);
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static std::array<JSValue, numberOfInternalFields> initialValues()
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{
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return { {
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jsNull(),
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jsNumber(static_cast<int32_t>(AsyncGeneratorState::SuspendedStart)),
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jsUndefined(),
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jsUndefined(),
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jsUndefined(),
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jsNumber(static_cast<int32_t>(AsyncGeneratorSuspendReason::None)),
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jsNull(),
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jsNull(),
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} };
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}
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static JSAsyncGenerator* create(VM&, Structure*);
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static Structure* createStructure(VM&, JSGlobalObject*, JSValue);
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DECLARE_EXPORT_INFO;
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static void visitChildren(JSCell*, SlotVisitor&);
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private:
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JSAsyncGenerator(VM&, Structure*);
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void finishCreation(VM&);
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};
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} // namespace JSC
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