Enum rustc_trait_selection::infer::RegionVariableOrigin

source · 
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),
}
Expand description

Reasons to create a region inference variable

See error_reporting module for more details

Variants§

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MiscVariable(Span)

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

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PatternRegion(Span)

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

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AddrOfRegion(Span)

Regions created by & operator

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Autoref(Span)

Regions created as part of an autoref of a method receiver

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Coercion(Span)

Regions created as part of an automatic coercion

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EarlyBoundRegion(Span, Symbol)

Region variables created as the values for early-bound regions

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LateBoundRegion(Span, BoundRegionKind, LateBoundRegionConversionTime)

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

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UpvarRegion(UpvarId, Span)

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Nll(NllRegionVariableOrigin)

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

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:

  • 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