js 的全局对象和一个js中的符号识别&如何暴露任意的domwindow

void JSGlobalObject::reset(JSValue prototype)

这个函数给出了js的一些全局函数，符号是如何识别和对应创建c++对象的。

给一些片段

 // Set global values.

    GlobalPropertyInfo staticGlobals[] = {

        GlobalPropertyInfo(Identifier(exec, "Math"), new (exec) MathObject(exec, MathObject::createStructure(d()->objectPrototype)), DontEnum | DontDelete),

        GlobalPropertyInfo(Identifier(exec, "NaN"), jsNaN(exec), DontEnum | DontDelete | ReadOnly),

        GlobalPropertyInfo(Identifier(exec, "Infinity"), jsNumber(exec, Inf), DontEnum | DontDelete | ReadOnly),

        GlobalPropertyInfo(Identifier(exec, "undefined"), jsUndefined(), DontEnum | DontDelete | ReadOnly),

        GlobalPropertyInfo(Identifier(exec, "JSON"), new (exec) JSONObject(JSONObject::createStructure(d()->objectPrototype)), DontEnum | DontDelete)

    };

    addStaticGlobals(staticGlobals, sizeof(staticGlobals) / sizeof(GlobalPropertyInfo));