/// <summary>
/// Promotes the class from the old type to the new type and returns the new
/// ExpandoData object.
/// </summary>
private ExpandoData PromoteClassCore(ExpandoClass oldClass, ExpandoClass newClass)
{
Debug.Assert(oldClass != newClass);
ContractUtils.AssertLockHeld(LockObject);
if (_data.Class == oldClass)
{
_data = _data.UpdateClass(newClass);
}
return(_data);
}
/// <summary>
/// Returns true if the member at the specified index has been deleted,
/// otherwise false. Call this function holding the lock.
/// </summary>
internal bool IsDeletedMember(int index)
{
ContractUtils.AssertLockHeld(LockObject);
Debug.Assert(index >= 0 && index <= _data.Length);
if (index == _data.Length)
{
// The member is a newly added by SetMemberBinder and not in data yet
return(false);
}
return(_data[index] == ExpandoObject.Uninitialized);
}
private bool ExpandoContainsKey(string key)
{
ContractUtils.AssertLockHeld(LockObject);
return(_data.Class.GetValueIndexCaseSensitive(key) >= 0);
}