pub enum ClosureOutlivesSubject<'tcx> {
    Ty(Ty<'tcx>),
    Region(RegionVid),
}
Expand description

The subject of a ClosureOutlivesRequirement – that is, the thing that must outlive some region.

Variants§

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Ty(Ty<'tcx>)

Subject is a type, typically a type parameter, but could also be a projection. Indicates a requirement like T: 'a being passed to the caller, where the type here is T.

The type here is guaranteed not to contain any free regions at present.

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Region(RegionVid)

Subject is a free region from the closure. Indicates a requirement like 'a: 'b being passed to the caller; the region here is 'a.

Trait Implementations§

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous).
This method tries to recover the query key from the given DepNode, something which is needed when forcing DepNodes during red-green evaluation. The query system will only call this method if fingerprint_style() is not FingerprintStyle::Opaque. It is always valid to return None here, in which case incremental compilation will treat the query as having changed instead of forcing it.

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes

Size for each variant:

  • Ty: 12 bytes
  • Region: 4 bytes