Type Alias TraitRef

pub type TraitRef = TraitRef<Interner>;

Aliased Type

struct TraitRef {
    pub trait_id: TraitId<Interner>,
    pub substitution: Substitution<Interner>,
}

Fields

trait_id: TraitId<Interner>

The trait id.

substitution: Substitution<Interner>

The substitution, containing both the Self type and the parameters.

Implementations

impl<I> TraitRef<I>

where I: Interner,

pub fn type_parameters(&self, interner: I) -> impl Iterator<Item = Ty<I>>

Gets all type parameters in this trait ref, including Self.

pub fn self_type_parameter(&self, interner: I) -> Ty<I>

Gets the type parameters of the Self type in this trait ref.

pub fn from_env(self) -> FromEnv<I>

Construct a FromEnv using this trait ref.

pub fn well_formed(self) -> WellFormed<I>

Construct a WellFormed using this trait ref.

impl<I> TraitRef<I>

where I: Interner,

pub fn with_as(&self) -> impl Debug

Returns a “Debuggable” type that prints like P0 as Trait<P1..>.

pub fn with_colon(&self) -> impl Debug

Returns a “Debuggable” type that prints like P0: Trait<P1..>.

Trait Implementations

impl HirDisplay for TraitRef

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

fn into_displayable<'a>( &'a self, db: &'a dyn HirDatabase, max_size: Option<usize>, limited_size: Option<usize>, omit_verbose_types: bool, display_target: DisplayTarget, display_kind: DisplayKind, closure_style: ClosureStyle, show_container_bounds: bool, ) -> HirDisplayWrapper<'a, Self>

where Self: Sized,

Returns a Displayable type that is human-readable.

fn display<'a>( &'a self, db: &'a dyn HirDatabase, display_target: DisplayTarget, ) -> 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>, display_target: DisplayTarget, ) -> 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_limited<'a>( &'a self, db: &'a dyn HirDatabase, limited_size: Option<usize>, display_target: DisplayTarget, ) -> HirDisplayWrapper<'a, Self>

where Self: Sized,

Returns a Displayable type that is human-readable and tries to limit the number of items inside. Use this for showing definitions which may contain too many items, like trait, struct, enum

fn display_source_code<'a>( &'a self, db: &'a dyn HirDatabase, module_id: ModuleId, allow_opaque: bool, ) -> 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)

fn display_test<'a>( &'a self, db: &'a dyn HirDatabase, display_target: DisplayTarget, ) -> HirDisplayWrapper<'a, Self>

where Self: Sized,

Returns a String representation of self for test purposes

fn display_with_container_bounds<'a>( &'a self, db: &'a dyn HirDatabase, show_container_bounds: bool, display_target: DisplayTarget, ) -> HirDisplayWrapper<'a, Self>

where Self: Sized,

Returns a String representation of self that shows the constraint from the container for functions

impl TraitRefExt for TraitRef

fn hir_trait_id(&self) -> TraitId

impl<I> CastTo<TraitRef<I>> for TraitRef<I>

where I: Interner,

fn cast_to( self, _interner: <TraitRef<I> as HasInterner>::Interner, ) -> TraitRef<I>

Cast a value to type T.

impl<I> CastTo<WhereClause<I>> for TraitRef<I>

where I: Interner,

fn cast_to(self, _interner: I) -> WhereClause<I>

Cast a value to type T.

impl<I> Clone for TraitRef<I>

where I: Clone + Interner,

fn clone(&self) -> TraitRef<I>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<I> Debug for TraitRef<I>

where I: Interner,

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

Formats the value using the given formatter.

impl<I> HasInterner for TraitRef<I>

where I: Interner,

type Interner = I

The interner associated with the type.

impl<I> Hash for TraitRef<I>

where I: Hash + Interner,

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

where __H: Hasher,

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<I> PartialEq for TraitRef<I>

where I: PartialEq + Interner,

fn eq(&self, other: &TraitRef<I>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<I> TypeFoldable<I> for TraitRef<I>

where I: Interner,

fn try_fold_with<E>( self, folder: &mut dyn FallibleTypeFolder<I, Error = E>, outer_binder: DebruijnIndex, ) -> Result<TraitRef<I>, E>

Apply the given folder folder to self; binders is the number of binders that are in scope when beginning the folder. Typically binders starts as 0, but is adjusted when we encounter Binders<T> in the IR or other similar constructs.

fn fold_with( self, folder: &mut dyn TypeFolder<I, Error = Infallible>, outer_binder: DebruijnIndex, ) -> Self

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

impl<I> TypeVisitable<I> for TraitRef<I>

where I: Interner,

fn visit_with<B>( &self, visitor: &mut dyn TypeVisitor<I, BreakTy = B>, outer_binder: DebruijnIndex, ) -> ControlFlow<B>

Apply the given visitor visitor to self; binders is the number of binders that are in scope when beginning the visitor. Typically binders starts as 0, but is adjusted when we encounter Binders<T> in the IR or other similar constructs.

impl<I> Zip<I> for TraitRef<I>

where I: Interner,

fn zip_with<Z>( zipper: &mut Z, variance: Variance, a: &TraitRef<I>, b: &TraitRef<I>, ) -> Result<(), NoSolution>

where Z: Zipper<I>,

Uses the zipper to walk through two values, ensuring that they match.

impl<I> Copy for TraitRef<I>

where I: Interner, <I as Interner>::InternedSubstitution: Copy,

impl<I> Eq for TraitRef<I>

where I: Eq + Interner,

impl<I> StructuralPartialEq for TraitRef<I>

where I: Interner,