add trio.as_safe_channel to async900 safe decorators #374
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fixes #370
I thought this was gonna be a one-line fix, but ended up getting really messy. There's definitely a cleaner way of implementing this, but it should work... 🙃
The reason it gets messy is because
has_decorator
->_get_identifier
only matches against the last part of an attribute, but I wanttrio.as_safe_decorator
in the error message, so the message and the implementation gets a mismatch. The main alternative approach would be to have separate lists of decorators for the error message and the logic.