Toby Harradine f83f378528 [Core] Make Requires.verify() wait until rules are loaded (#2857)
* Make Requires.verify() wait until rules are loaded

Also ensures `Requires` objects are reset when unloaded, particularly in case a `Command` object manages to stay in memory between cog unload and load, and its permissions rules change between those events.

Also, this PR re-ordered some of the event loop policy stuff, because it was required that the event loop policy be set before creating any `Requires` objects. This may or may not have an effect on other `get_event_loop()` calls elsewhere (either in our code, a dependency's, or asyncio's). Either way, these effects would be a *correction*, and any bugs that arise from it are likely to have been occurring silently beforehand.

Signed-off-by: Toby Harradine <tobyharradine@gmail.com>

* Remove calls to `remove_listener()` in permissions

Signed-off-by: Toby Harradine <tobyharradine@gmail.com>

* Fix adding rules for permissions cog/commands itself

Also addresses feedback

Signed-off-by: Toby Harradine <tobyharradine@gmail.com>

* Clean up indentation when setting uvloop policy

Signed-off-by: Toby Harradine <tobyharradine@gmail.com>

* Use `set(walk_commands())` to traverse `Group` subcommands

Signed-off-by: Toby Harradine <tobyharradine@gmail.com>
2019-07-13 20:47:40 -04:00
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