pub(crate) enum RegionNameHighlight {
    MatchedHirTy(Span),
    MatchedAdtAndSegment(Span),
    CannotMatchHirTy(SpanString),
    Occluded(SpanString),
}
Expand description

Describes what to highlight to explain to the user that we’re giving an anonymous region a synthesized name, and how to highlight it.

Variants

MatchedHirTy(Span)

The anonymous region corresponds to a reference that was found by traversing the type in the HIR.

MatchedAdtAndSegment(Span)

The anonymous region corresponds to a '_ in the generics list of a struct/enum/union.

CannotMatchHirTy(SpanString)

The anonymous region corresponds to a region where the type annotation is completely missing from the code, e.g. in a closure arguments |x| { ... }, where x is a reference.

Occluded(SpanString)

The anonymous region corresponds to a region where the type annotation is completely missing from the code, and even if we print out the full name of the type, the region name won’t be included. This currently occurs for opaque types like impl Future.

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

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: 40 bytes

Size for each variant:

  • MatchedHirTy: 8 bytes
  • MatchedAdtAndSegment: 8 bytes
  • CannotMatchHirTy: 36 bytes
  • Occluded: 36 bytes