Enum rustc_infer::infer::RegionVariableOrigin

pub enum RegionVariableOrigin {
    MiscVariable(Span),
    PatternRegion(Span),
    AddrOfRegion(Span),
    Autoref(Span),
    Coercion(Span),
    EarlyBoundRegion(Span, Symbol),
    LateBoundRegion(Span, BoundRegionKind, LateBoundRegionConversionTime),
    UpvarRegion(UpvarId, Span),
    Nll(NllRegionVariableOrigin),
}

Reasons to create a region inference variable

See error_reporting module for more details

Variants

MiscVariable(Span)

Region variables created for ill-categorized reasons, mostly indicates places in need of refactoring

PatternRegion(Span)

Regions created by a &P or [...] pattern

AddrOfRegion(Span)

Regions created by & operator

Autoref(Span)

Regions created as part of an autoref of a method receiver

Coercion(Span)

Regions created as part of an automatic coercion

EarlyBoundRegion(Span, Symbol)

Region variables created as the values for early-bound regions

LateBoundRegion(Span, BoundRegionKind, LateBoundRegionConversionTime)

Region variables created for bound regions in a function or method that is called

UpvarRegion(UpvarId, Span)

Nll(NllRegionVariableOrigin)

This origin is used for the inference variables that we create during NLL region processing.

Implementations

impl RegionVariableOrigin

pub fn span(&self) -> Span

Trait Implementations

impl Clone for RegionVariableOrigin

fn clone(&self) -> RegionVariableOrigin

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RegionVariableOrigin

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for RegionVariableOrigin

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:

• MiscVariable: 8 bytes
• PatternRegion: 8 bytes
• AddrOfRegion: 8 bytes
• Autoref: 8 bytes
• Coercion: 8 bytes
• EarlyBoundRegion: 12 bytes
• LateBoundRegion: 36 bytes
• UpvarRegion: 20 bytes
• Nll: 24 bytes