Struct rustc_trait_selection::infer::region_constraints::MemberConstraint

pub struct MemberConstraint<'tcx> {
    pub key: OpaqueTypeKey<'tcx>,
    pub definition_span: Span,
    pub hidden_ty: Ty<'tcx>,
    pub member_region: Region<'tcx>,
    pub choice_regions: Rc<Vec<Region<'tcx>, Global>, Global>,
}

Requires that region must be equal to one of the regions in choice_regions. We often denote this using the syntax:

R0 member of [O1..On]

Fields

key: OpaqueTypeKey<'tcx>

The DefId and args of the opaque type causing this constraint. Used for error reporting.

definition_span: Span

The span where the hidden type was instantiated.

hidden_ty: Ty<'tcx>

The hidden type in which member_region appears: used for error reporting.

member_region: Region<'tcx>

The region R0.

choice_regions: Rc<Vec<Region<'tcx>, Global>, Global>

The options O1..On.

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: 48 bytes