Struct rustc_traits::chalk::lowering::ParamsSubstitutor[−][src]

pub(crate) struct ParamsSubstitutor<'tcx> {
    tcx: TyCtxt<'tcx>,
    binder_index: DebruijnIndex,
    list: Vec<ParamTy>,
    next_ty_placeholder: usize,
    pub(crate) params: FxHashMap<usize, ParamTy>,
    pub(crate) named_regions: BTreeMap<DefId, u32>,
}
Expand description

Used to substitute Params with placeholders. We do this since Chalk have a notion of Params.

Fields

tcx: TyCtxt<'tcx>binder_index: DebruijnIndexlist: Vec<ParamTy>next_ty_placeholder: usizeparams: FxHashMap<usize, ParamTy>named_regions: BTreeMap<DefId, u32>

Implementations

impl<'tcx> ParamsSubstitutor<'tcx>[src]

pub(crate) fn new(tcx: TyCtxt<'tcx>, next_ty_placeholder: usize) -> Self[src]

Trait Implementations

impl<'tcx> TypeFolder<'tcx> for ParamsSubstitutor<'tcx>[src]

fn tcx<'b>(&'b self) -> TyCtxt<'tcx>[src]

fn fold_binder<T: TypeFoldable<'tcx>>(
    &mut self,
    t: Binder<'tcx, T>
) -> Binder<'tcx, T>[src]

fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx>[src]

fn fold_region(&mut self, r: Region<'tcx>) -> Region<'tcx>[src]

fn fold_const(&mut self, c: &'tcx Const<'tcx>) -> &'tcx Const<'tcx>[src]

fn fold_mir_const(&mut self, c: ConstantKind<'tcx>) -> ConstantKind<'tcx>[src]

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for ParamsSubstitutor<'tcx>

impl<'tcx> !Send for ParamsSubstitutor<'tcx>

impl<'tcx> !Sync for ParamsSubstitutor<'tcx>

impl<'tcx> Unpin for ParamsSubstitutor<'tcx>

impl<'tcx> !UnwindSafe for ParamsSubstitutor<'tcx>

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

Performs the conversion.