Struct rustc_pattern_analysis::usefulness::UsefulnessCtxt

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struct UsefulnessCtxt<'a, Cx: PatCx> {
    tycx: &'a Cx,
    useful_subpatterns: FxHashSet<PatId>,
    complexity_limit: Option<usize>,
    complexity_level: usize,
}
Expand description

Context that provides information for usefulness checking.

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§tycx: &'a Cx

The context for type information.

§useful_subpatterns: FxHashSet<PatId>

Collect the patterns found useful during usefulness checking. This is used to lint unreachable (sub)patterns.

§complexity_limit: Option<usize>§complexity_level: usize

Implementations§

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impl<'a, Cx: PatCx> UsefulnessCtxt<'a, Cx>

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fn increase_complexity_level( &mut self, complexity_add: usize ) -> Result<(), Cx::Error>

Auto Trait Implementations§

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impl<'a, Cx> DynSend for UsefulnessCtxt<'a, Cx>
where Cx: DynSync,

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impl<'a, Cx> DynSync for UsefulnessCtxt<'a, Cx>
where Cx: DynSync,

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impl<'a, Cx> Freeze for UsefulnessCtxt<'a, Cx>

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impl<'a, Cx> RefUnwindSafe for UsefulnessCtxt<'a, Cx>
where Cx: RefUnwindSafe,

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impl<'a, Cx> Send for UsefulnessCtxt<'a, Cx>
where Cx: Sync,

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impl<'a, Cx> Sync for UsefulnessCtxt<'a, Cx>
where Cx: Sync,

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impl<'a, Cx> Unpin for UsefulnessCtxt<'a, Cx>

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impl<'a, Cx> UnwindSafe for UsefulnessCtxt<'a, Cx>
where Cx: RefUnwindSafe,

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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where T: 'static + ?Sized,

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where T: ?Sized,

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Size: 64 bytes