# Copyright (c) 2017 Ultimaker B.V.
# Cura is released under the terms of the LGPLv3 or higher.


class InvalidOperationError(Exception):
    """Raised when trying to perform an operation like add on a stack that does not allow that."""

    pass


class InvalidContainerError(Exception):
    """Raised when trying to replace a container with a container that does not have the expected type."""

    pass


class TooManyExtrudersError(Exception):
    """Raised when trying to add an extruder to a Global stack that already has the maximum number of extruders."""

    pass


class NoGlobalStackError(Exception):
    """Raised when an extruder has no next stack set."""

    pass