Struct ra_ap_hir_ty::Substs

pub struct Substs(_);

A list of substitutions for generic parameters.

Implementations

impl Substs

pub fn empty() -> Substs

pub fn single(ty: Ty) -> Substs

pub fn prefix(&self, n: usize) -> Substs

pub fn suffix(&self, n: usize) -> Substs

pub fn as_single(&self) -> &Ty

pub fn type_params(db: &dyn HirDatabase, def: impl Into<GenericDefId>) -> Substs

Return Substs that replace each parameter by itself (i.e. Ty::Param).

pub fn build_for_def(
    db: &dyn HirDatabase,
    def: impl Into<GenericDefId>
) -> SubstsBuilder

pub fn build_for_type_ctor(
    db: &dyn HirDatabase,
    type_ctor: TypeCtor
) -> SubstsBuilder

Trait Implementations

impl Clone for Substs

fn clone(&self) -> Substs

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Substs

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

Formats the value using the given formatter.

impl Deref for Substs

type Target = [Ty]

The resulting type after dereferencing.

fn deref(&self) -> &[Ty]

Dereferences the value.

impl Eq for Substs

impl Hash for Substs

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, 

Feeds a slice of this type into the given [Hasher].

impl PartialEq<Substs> for Substs

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl StructuralEq for Substs

impl StructuralPartialEq for Substs

impl TypeWalk for Substs

fn walk(&self, f: &mut impl FnMut(&Ty))

fn walk_mut_binders(
    &mut self,
    f: &mut impl FnMut(&mut Ty, DebruijnIndex),
    binders: DebruijnIndex
)

Walk the type, counting entered binders.

fn walk_mut(&mut self, f: &mut impl FnMut(&mut Ty))

fn fold_binders(
    self,
    f: &mut impl FnMut(Ty, DebruijnIndex) -> Ty,
    binders: DebruijnIndex
) -> Self where
    Self: Sized, 

fn fold(self, f: &mut impl FnMut(Ty) -> Ty) -> Self where
    Self: Sized, 

fn subst_bound_vars(self, substs: &Substs) -> Self where
    Self: Sized, 

Substitutes Ty::Bound vars with the given substitution.

fn subst_bound_vars_at_depth(
    self,
    substs: &Substs,
    depth: DebruijnIndex
) -> Self where
    Self: Sized, 

Substitutes Ty::Bound vars with the given substitution.

fn shift_bound_vars(self, n: DebruijnIndex) -> Self where
    Self: Sized, 

Shifts up debruijn indices of Ty::Bound vars by n.