public static SymbolPrototype CreatePrototypeObject(Engine engine, SymbolConstructor symbolConstructor)
{
var obj = new SymbolPrototype(engine)
{
_prototype = engine.Object.PrototypeObject,
_symbolConstructor = symbolConstructor
};
return(obj);
}
internal SymbolPrototype(
Engine engine,
Realm realm,
SymbolConstructor symbolConstructor,
ObjectPrototype objectPrototype)
: base(engine, realm)
{
_prototype = objectPrototype;
_constructor = symbolConstructor;
}
public static SymbolPrototype CreatePrototypeObject(Engine engine, SymbolConstructor symbolConstructor)
{
var obj = new SymbolPrototype(engine);
obj.Prototype = engine.Object.PrototypeObject;
obj.Extensible = true;
obj.SetOwnProperty("length", new PropertyDescriptor(0, PropertyFlag.AllForbidden));
obj.FastAddProperty("constructor", symbolConstructor, true, false, true);
return(obj);
}
public static SymbolConstructor CreateSymbolConstructor(Engine engine)
{
var obj = new SymbolConstructor(engine)
{
_prototype = engine.Function.PrototypeObject
};
// The value of the [[Prototype]] internal property of the Symbol constructor is the Function prototype object
obj.PrototypeObject = SymbolPrototype.CreatePrototypeObject(engine, obj);
obj._length = new PropertyDescriptor(JsNumber.PositiveZero, PropertyFlag.Configurable);
// The initial value of String.prototype is the String prototype object
obj._prototypeDescriptor = new PropertyDescriptor(obj.PrototypeObject, PropertyFlag.AllForbidden);
return(obj);
}
public static SymbolConstructor CreateSymbolConstructor(Engine engine)
{
var obj = new SymbolConstructor(engine);
obj.Extensible = true;
// The value of the [[Prototype]] internal property of the Symbol constructor is the Function prototype object
obj.Prototype = engine.Function.PrototypeObject;
obj.PrototypeObject = SymbolPrototype.CreatePrototypeObject(engine, obj);
obj.SetOwnProperty("length", new PropertyDescriptor(0, PropertyFlag.AllForbidden));
// The initial value of String.prototype is the String prototype object
obj.SetOwnProperty("prototype", new PropertyDescriptor(obj.PrototypeObject, PropertyFlag.AllForbidden));
obj.SetOwnProperty("species", new PropertyDescriptor(GlobalSymbolRegistry.Species, PropertyFlag.AllForbidden));
return(obj);
}
