Source/WebCore/bindings/js/JSDOMGlobalObjectInlines.h

/*
 * Copyright (C) 2021 Apple Inc. All Rights Reserved.
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#pragma once

#include "DOMConstructors.h"
#include "JSDOMGlobalObject.h"

namespace WebCore {

template<class ConstructorClass, DOMConstructorID constructorID>
inline JSC::JSObject* getDOMConstructor(JSC::VM& vm, const JSDOMGlobalObject& globalObject)
{
    // No locking is necessary unless we need to add a new constructor to JSDOMGlobalObject::constructors().
    if (JSC::JSObject* constructor = globalObject.constructors().array()[static_cast<unsigned>(constructorID)].get())
        return constructor;
    JSC::JSObject* constructor = ConstructorClass::create(vm, ConstructorClass::createStructure(vm, const_cast<JSDOMGlobalObject&>(globalObject), ConstructorClass::prototypeForStructure(vm, globalObject)), const_cast<JSDOMGlobalObject&>(globalObject));
    ASSERT(!globalObject.constructors().array()[static_cast<unsigned>(constructorID)].get());
    JSDOMGlobalObject& mutableGlobalObject = const_cast<JSDOMGlobalObject&>(globalObject);
    mutableGlobalObject.constructors().array()[static_cast<unsigned>(constructorID)].set(vm, &globalObject, constructor);
    return constructor;
}

} // namespace WebCore