Enum ra_ap_hir_ty::GenericPredicate

pub enum GenericPredicate {
    Implemented(TraitRef),
    Projection(ProjectionPredicate),
    Error,
}

Like generics::WherePredicate, but with resolved types: A condition on the parameters of a generic item.

Variants

Implemented(TraitRef)

The given trait needs to be implemented for its type parameters.

Projection(ProjectionPredicate)

An associated type bindings like in Iterator<Item = T>.

Error

We couldn't resolve the trait reference. (If some type parameters can't be resolved, they will just be Unknown).

Implementations

impl GenericPredicate

pub fn is_error(&self) -> bool

pub fn is_implemented(&self) -> bool

pub fn trait_ref(&self, db: &dyn HirDatabase) -> Option<TraitRef>

Trait Implementations

impl Clone for GenericPredicate

fn clone(&self) -> GenericPredicate

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GenericPredicate

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

Formats the value using the given formatter.

impl Eq for GenericPredicate

impl Hash for GenericPredicate

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<'_> HirDisplay for &'_ GenericPredicate

fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError>

fn display<'a>(&'a self, db: &'a dyn HirDatabase) -> HirDisplayWrapper<'a, Self> where
    Self: Sized, 

Returns a Displayable type that is human-readable. Use this for showing types to the user (e.g. diagnostics)

fn display_truncated<'a>(
    &'a self,
    db: &'a dyn HirDatabase,
    max_size: Option<usize>
) -> HirDisplayWrapper<'a, Self> where
    Self: Sized, 

Returns a Displayable type that is human-readable and tries to be succinct. Use this for showing types to the user where space is constrained (e.g. doc popups)

fn display_source_code<'a>(
    &'a self,
    db: &'a dyn HirDatabase,
    module_id: ModuleId
) -> Result<String, DisplaySourceCodeError>

Returns a String representation of self that can be inserted into the given module. Use this when generating code (e.g. assists)

impl HirDisplay for GenericPredicate

fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError>

fn display<'a>(&'a self, db: &'a dyn HirDatabase) -> HirDisplayWrapper<'a, Self> where
    Self: Sized, 

Returns a Displayable type that is human-readable. Use this for showing types to the user (e.g. diagnostics)

fn display_truncated<'a>(
    &'a self,
    db: &'a dyn HirDatabase,
    max_size: Option<usize>
) -> HirDisplayWrapper<'a, Self> where
    Self: Sized, 

Returns a Displayable type that is human-readable and tries to be succinct. Use this for showing types to the user where space is constrained (e.g. doc popups)

fn display_source_code<'a>(
    &'a self,
    db: &'a dyn HirDatabase,
    module_id: ModuleId
) -> Result<String, DisplaySourceCodeError>

Returns a String representation of self that can be inserted into the given module. Use this when generating code (e.g. assists)

impl PartialEq<GenericPredicate> for GenericPredicate

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

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

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

This method tests for !=.

impl StructuralEq for GenericPredicate

impl StructuralPartialEq for GenericPredicate

impl TypeWalk for GenericPredicate

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.