Sweepers require level during instantiation #577
Merged
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As @danielru has correctly noted 10 years ago in #46, the sweepers can be instantiated, but not used without a level.
Since I now have some capacity for tending the garden, I thought I'd change that.
I also think it makes it easier get started with developing a new sweeper since its now more obvious that sweeper and level interact.
Note that it is possible to pass
None
as the level in the SDC sweepers. The sweepers have setters for the level that make sure you pass a proper level, but they are not used during instantiation. In some tests, sweepers are instantiated to check the attached collocation problem, so we should keep this.Closes #46