Struct FnPtrShape 

pub struct FnPtrShape(PolyFnSig<'static>);

Represents the “shape” of a function pointer, i.e. the most general signature we can obtain from it without breaking the higher-kinded variables. E.g. for<'a> fn(&'a u32) -> Adt<'a, u32> is considered to be an instantiation of the shape for<'a> fn(&'a A) -> Adt<'a, B> with A=B=u32.

It’s a PolyFnSig with erased 'tcx, to avoid threading that lifetime through hax::DefId. The hax infrastructure never escapes the compiler session, so this should be fine.

Tuple Fields

0: PolyFnSig<'static>

Implementations

impl FnPtrShape

fn erase<'tcx>(sig: PolyFnSig<'tcx>) -> Self

fn sig<'tcx>(self, _s: &impl BaseState<'tcx>) -> PolyFnSig<'tcx>

fn ty<'tcx>(self, s: &impl BaseState<'tcx>) -> Ty<'tcx>

impl FnPtrShape

fn extract_shape<'tcx>( tcx: TyCtxt<'tcx>, sig: PolyFnSig<'tcx>, ) -> (Self, GenericArgsRef<'tcx>)

Replace each maximal type, region or constant that does not mention a locally-bound variable with a distinct generic parameter. We retain only the structure needed to keep higher-order variables correctly bound.

Trait Implementations

impl Clone for FnPtrShape

fn clone(&self) -> FnPtrShape

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FnPtrShape

impl Debug for FnPtrShape

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

Formats the value using the given formatter.

impl Eq for FnPtrShape

impl Hash for FnPtrShape

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for FnPtrShape

fn eq(&self, other: &FnPtrShape) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl RefUnwindSafe for FnPtrShape

impl StructuralPartialEq for FnPtrShape

impl UnwindSafe for FnPtrShape