Cleanup handle_code_action #7018
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Avoid mutation of snapshot's config -- that's spooky action at a distance. Instead, copy it over to a local variable. This points out a minor architecture problem, which we won't fix right away. Various `ide`-level config structs, like `AssistConfig`, are geared towards one-shot use when calling a specific methods. On the other hand, the large `Config` struct in `rust-analyzer` is a long-term config store. The fact that `Config` stores `AssistConfig` is accidental -- a better design would probably be to just store `ConfigData` inside `Config` and create various `Config`s on the fly out of it.
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* Push control flow outwards, as per https://github.com/rust-analyzer/rust-analyzer/blob/master/docs/dev/style.md#preconditions * Don't re-do the work, pass-in the arguments
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bors r+ |
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bors r+
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