#pragma once
#include "JSInternalFieldObjectImpl.h"
namespace JSC {
class JSPromiseConstructor;
class JSPromise : public JSInternalFieldObjectImpl<2> {
public:
using Base = JSInternalFieldObjectImpl<2>;
template<typename CellType, SubspaceAccess mode>
static IsoSubspace* subspaceFor(VM& vm)
{
return &vm.promiseSpace;
}
JS_EXPORT_PRIVATE static JSPromise* create(VM&, Structure*);
static JSPromise* createWithInitialValues(VM&, Structure*);
static Structure* createStructure(VM&, JSGlobalObject*, JSValue);
DECLARE_EXPORT_INFO;
enum class Status : unsigned {
Pending = 0, Fulfilled = 1,
Rejected = 2,
};
static constexpr uint32_t isHandledFlag = 4;
static constexpr uint32_t isFirstResolvingFunctionCalledFlag = 8;
static constexpr uint32_t stateMask = 0b11;
enum class Field : unsigned {
Flags = 0,
ReactionsOrResult = 1,
};
static_assert(numberOfInternalFields == 2);
static std::array<JSValue, numberOfInternalFields> initialValues()
{
return { {
jsNumber(static_cast<unsigned>(Status::Pending)),
jsUndefined(),
} };
}
const WriteBarrier<Unknown>& internalField(Field field) const { return Base::internalField(static_cast<uint32_t>(field)); }
WriteBarrier<Unknown>& internalField(Field field) { return Base::internalField(static_cast<uint32_t>(field)); }
JS_EXPORT_PRIVATE Status status(VM&) const;
JS_EXPORT_PRIVATE JSValue result(VM&) const;
JS_EXPORT_PRIVATE bool isHandled(VM&) const;
JS_EXPORT_PRIVATE static JSPromise* resolvedPromise(JSGlobalObject*, JSValue);
JS_EXPORT_PRIVATE void resolve(JSGlobalObject*, JSValue);
JS_EXPORT_PRIVATE void reject(JSGlobalObject*, JSValue);
JS_EXPORT_PRIVATE void rejectAsHandled(JSGlobalObject*, JSValue);
JS_EXPORT_PRIVATE void reject(JSGlobalObject*, Exception*);
JS_EXPORT_PRIVATE void rejectAsHandled(JSGlobalObject*, Exception*);
struct DeferredData {
WTF_FORBID_HEAP_ALLOCATION;
public:
JSPromise* promise { nullptr };
JSFunction* resolve { nullptr };
JSFunction* reject { nullptr };
};
static DeferredData createDeferredData(JSGlobalObject*, JSPromiseConstructor*);
static void visitChildren(JSCell*, SlotVisitor&);
protected:
JSPromise(VM&, Structure*);
void finishCreation(VM&);
uint32_t flags() const;
};
}