Enum rustc_borrowck::diagnostics::region_name::RegionNameSource

source · [−]
pub(crate) enum RegionNameSource {
    NamedEarlyBoundRegion(Span),
    NamedFreeRegion(Span),
    Static,
    SynthesizedFreeEnvRegion(Span, &'static str),
    AnonRegionFromArgument(RegionNameHighlight),
    AnonRegionFromUpvar(Span, Symbol),
    AnonRegionFromOutput(RegionNameHighlight, &'static str),
    AnonRegionFromYieldTy(Span, String),
    AnonRegionFromAsyncFn(Span),
    AnonRegionFromImplSignature(Span, &'static str),
}
Expand description

Denotes the source of a region that is named by a RegionName. For example, a free region that was named by the user would get NamedFreeRegion and 'static lifetime would get Static. This helps to print the right kinds of diagnostics.

Variants

NamedEarlyBoundRegion(Span)

A bound (not free) region that was substituted at the def site (not an HRTB).

NamedFreeRegion(Span)

A free region that the user has a name ('a) for.

Static

The 'static region.

SynthesizedFreeEnvRegion(Span, &'static str)

The free region corresponding to the environment of a closure.

AnonRegionFromArgument(RegionNameHighlight)

The region corresponding to an argument.

AnonRegionFromUpvar(Span, Symbol)

The region corresponding to a closure upvar.

AnonRegionFromOutput(RegionNameHighlight, &'static str)

The region corresponding to the return type of a closure.

AnonRegionFromYieldTy(Span, String)

The region from a type yielded by a generator.

AnonRegionFromAsyncFn(Span)

An anonymous region from an async fn.

AnonRegionFromImplSignature(Span, &'static str)

An anonymous region from an impl self type or trait

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: 56 bytes

Size for each variant:

  • NamedEarlyBoundRegion: 12 bytes
  • NamedFreeRegion: 12 bytes
  • Static: 0 bytes
  • SynthesizedFreeEnvRegion: 32 bytes
  • AnonRegionFromArgument: 48 bytes
  • AnonRegionFromUpvar: 16 bytes
  • AnonRegionFromOutput: 56 bytes
  • AnonRegionFromYieldTy: 40 bytes
  • AnonRegionFromAsyncFn: 12 bytes
  • AnonRegionFromImplSignature: 32 bytes