public static EcmaValue GetOwnPropertyDescriptor(EcmaValue target, EcmaValue property)
{
EcmaPropertyDescriptor descriptor = target.ToObject().GetOwnProperty(EcmaPropertyKey.FromValue(property));
if (descriptor == null)
{
return(default);
public override bool DefineOwnProperty(EcmaPropertyKey propertyKey, EcmaPropertyDescriptor descriptor)
{
if (propertyKey.IsCanonicalNumericIndex)
{
if (IsValidIndex(propertyKey, out int index))
{
if (descriptor.IsAccessorDescriptor)
{
return(false);
}
if ((descriptor.HasConfigurable && descriptor.Configurable) ||
(descriptor.HasEnumerable && !descriptor.Enumerable) ||
(descriptor.HasWritable && !descriptor.Writable))
{
return(false);
}
if (descriptor.HasValue)
{
SetValueInBuffer(index, descriptor.Value);
}
return(true);
}
return(false);
}
return(base.DefineOwnProperty(propertyKey, descriptor));
}
public static EcmaValue DefineProperty(EcmaValue target, EcmaValue property, EcmaValue attributes)
{
Guard.ArgumentIsObject(target);
RuntimeObject obj = target.ToObject();
obj.DefinePropertyOrThrow(EcmaPropertyKey.FromValue(property), EcmaPropertyDescriptor.FromValue(attributes));
return(target);
}
public static EcmaValue DefineProperties(EcmaValue target, EcmaValue properties)
{
Guard.ArgumentIsObject(target);
RuntimeObject dst = target.ToObject();
foreach (EcmaPropertyEntry e in properties.ToObject().GetEnumerableOwnProperties(true))
{
dst.DefinePropertyOrThrow(e.Key, EcmaPropertyDescriptor.FromValue(e.Value));
}
return(target);
}
public override bool DefineOwnProperty(EcmaPropertyKey propertyKey, EcmaPropertyDescriptor descriptor)
{
if (IsBoundedVariable(propertyKey))
{
int index = (int)propertyKey.ToArrayIndex();
EnsureTainted();
if (taintedLevel[index] != TaintLevel.BindingTainted)
{
if (descriptor.HasValue)
{
arguments[index] = descriptor.Value;
}
taintedLevel[index] = !descriptor.IsAccessorDescriptor && (!descriptor.HasWritable || descriptor.Writable) ? TaintLevel.AttributeTainted : TaintLevel.BindingTainted;
}
}
return(base.DefineOwnProperty(propertyKey, descriptor));
}
public override EcmaPropertyDescriptor GetOwnProperty(EcmaPropertyKey propertyKey)
{
EcmaPropertyDescriptor current = base.GetOwnProperty(propertyKey);
if (EcmaValueUtility.TryIndexByPropertyKey(arguments, propertyKey, out EcmaValue value))
{
if (taintedLevel == null)
{
return(new EcmaPropertyDescriptor(value, EcmaPropertyAttributes.DefaultDataProperty));
}
if (taintedLevel[propertyKey.ToArrayIndex()] == TaintLevel.AttributeTainted)
{
current.Value = value;
}
}
return(current);
}
