public override bool Delete(EcmaPropertyKey propertyKey)
{
if (IsBoundedVariable(propertyKey))
{
EnsureTainted();
taintedLevel[propertyKey.ToArrayIndex()] = TaintLevel.BindingTainted;
}
return(base.Delete(propertyKey));
}
public static bool TryIndexByPropertyKey(IList list, EcmaPropertyKey propertyKey, out EcmaValue value)
{
if (propertyKey.IsArrayIndex && list != null)
{
long index = propertyKey.ToArrayIndex();
if (index < list.Count)
{
value = new EcmaValue(list[(int)index]);
return(true);
}
}
value = default;
return(false);
}
public static bool TryIndexByPropertyKey(string str, EcmaPropertyKey propertyKey, out EcmaValue value)
{
if (propertyKey.IsArrayIndex && str != null)
{
long index = propertyKey.ToArrayIndex();
if (index < str.Length)
{
value = new EcmaValue(new String(str[(int)index], 1));
return(true);
}
}
value = default;
return(false);
}
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);
}
private bool IsBoundedVariable(EcmaPropertyKey propertyKey)
{
return(propertyKey.IsArrayIndex && propertyKey.ToArrayIndex() < arguments.Length);
}
