private async Task <IUntypedReadableProperty> GetNextPropertyAsync(CancellationToken cancellationToken)
{
if (!_predefinedPropertiesFinished)
{
if (_predefinedPropertiesEnumerator.MoveNext())
{
return(_predefinedPropertiesEnumerator.Current);
}
_predefinedPropertiesFinished = true;
if (_propertyStore == null || (_maxCost.HasValue && _propertyStore.Cost > _maxCost))
{
return(null);
}
var deadProperties = await _propertyStore.LoadAsync(_entry, cancellationToken).ConfigureAwait(false);
_deadPropertiesEnumerator = deadProperties.GetEnumerator();
}
if (_propertyStore == null || (_maxCost.HasValue && _propertyStore.Cost > _maxCost))
{
return(null);
}
Debug.Assert(_deadPropertiesEnumerator != null, "_deadPropertiesEnumerator != null");
if (_deadPropertiesEnumerator == null)
{
throw new InvalidOperationException("Internal error: The dead properties enumerator was not initialized");
}
if (!_deadPropertiesEnumerator.MoveNext())
{
return(null);
}
return(_deadPropertiesEnumerator.Current);
}
