Enum rustc_borrowck::region_infer::values::RegionElement

pub(crate) enum RegionElement {
    Location(Location),
    RootUniversalRegion(RegionVid),
    PlaceholderRegion(PlaceholderRegion),
}

An individual element in a region value – the value of a particular region variable consists of a set of these elements.

Variants

Location(Location)

A point in the control-flow graph.

RootUniversalRegion(RegionVid)

A universally quantified region from the root universe (e.g., a lifetime parameter).

PlaceholderRegion(PlaceholderRegion)

A placeholder (e.g., instantiated from a for<'a> fn(&'a u32) type).

Trait Implementations

impl Clone for RegionElement

fn clone(&self) -> RegionElement

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RegionElement

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

Formats the value using the given formatter.

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: 24 bytes

Size for each variant:

• Location: 20 bytes
• RootUniversalRegion: 4 bytes
• PlaceholderRegion: 20 bytes