Struct rustc_traits::chalk::lowering::PlaceholdersCollector

pub(crate) struct PlaceholdersCollector {
    universe_index: UniverseIndex,
    pub(crate) next_ty_placeholder: usize,
    pub(crate) next_anon_region_placeholder: u32,
}

Used to collect Placeholders.

Fields

universe_index: UniverseIndex

next_ty_placeholder: usize

next_anon_region_placeholder: u32

Implementations

impl PlaceholdersCollector

pub(crate) fn new() -> Self

Trait Implementations

impl<'tcx> TypeVisitor<'tcx> for PlaceholdersCollector

fn tcx_for_anon_const_substs(&self) -> Option<TyCtxt<'tcx>>

Supplies the tcx for an unevaluated anonymous constant in case its default substs are not yet supplied.

fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<Self::BreakTy>

fn visit_region(&mut self, r: Region<'tcx>) -> ControlFlow<Self::BreakTy>

type BreakTy = !

fn visit_binder<T>(
    &mut self,
    t: &Binder<'tcx, T>
) -> ControlFlow<Self::BreakTy, ()> where
    T: TypeFoldable<'tcx>, 

fn visit_const(
    &mut self,
    c: &'tcx Const<'tcx>
) -> ControlFlow<Self::BreakTy, ()>

fn visit_unevaluated_const(
    &mut self,
    uv: Unevaluated<'tcx, Option<Promoted>>
) -> ControlFlow<Self::BreakTy, ()>

fn visit_predicate(
    &mut self,
    p: Predicate<'tcx>
) -> ControlFlow<Self::BreakTy, ()>

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: 16 bytes