Struct chalk_ir::TraitRef

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

Expand description

A trait reference describes the relationship between a type and a trait. This can be used in two forms:

P0: Trait<P1..Pn> (e.g. i32: Copy), which mentions that the type implements the trait.
<P0 as Trait<P1..Pn>> (e.g. i32 as Copy), which casts the type to that specific trait.

Fields

trait_id: TraitId

The trait id.

substitution: Substitution

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

Implementations

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impl<I: Interner> TraitRef

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pub fn with_as(&self) -> impl Debug + '_

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

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pub fn with_colon(&self) -> impl Debug + '_

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

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impl<I: Interner> TraitRef

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

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

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

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

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pub fn from_env(self) -> FromEnv

Construct a FromEnv using this trait ref.

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pub fn well_formed(self) -> WellFormed

Construct a WellFormed using this trait ref.

Trait Implementations

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impl<I: Interner> CastTo<TraitRef> for TraitRef

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

Cast a value to type T.

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

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

Cast a value to type T.

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impl<I: Clone + Interner> Clone for TraitRef

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fn clone(&self) -> TraitRef

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl<I: Interner> Debug for TraitRef

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

Formats the value using the given formatter. Read more

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impl<I: Interner> Fold for TraitRef

The type of value that will be produced once folding is done. Typically this is Self, unless Self contains borrowed values, in which case owned values are produced (for example, one can fold over a &T value where T: Fold, in which case you get back a T, not a &T). Read more

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fn fold_with<E>(
 self,
 folder: &mut dyn Folder<I, Error = E>,
 outer_binder: DebruijnIndex
) -> Result<Self::Result, 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. Read more

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impl<I: Interner> HasInterner for TraitRef

type Interner = I

The interner associated with the type.

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impl<I: Hash + Interner> Hash for TraitRef

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

Feeds this value into the given Hasher. Read more

1.3.0 · source

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

Feeds a slice of this type into the given Hasher. Read more

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impl<I: PartialEq + Interner> PartialEq<TraitRef> for TraitRef

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

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

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

This method tests for !=.

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impl<I: Interner> Visit for TraitRef

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

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. Read more

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impl<I: Interner> Zip for TraitRef

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fn zip_with<Z: Zipper>(
 zipper: &mut Z,
 variance: Variance,
 a: &Self,
 b: &Self
) -> Fallible<()>

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

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impl<I: Interner> StructuralPartialEq for TraitRef

Auto Trait Implementations

impl RefUnwindSafe for TraitRef where
::DefId: RefUnwindSafe,
::InternedSubstitution: RefUnwindSafe,

impl Send for TraitRef where
::DefId: Send,
::InternedSubstitution: Send,

impl Sync for TraitRef where
::DefId: Sync,
::InternedSubstitution: Sync,

impl Unpin for TraitRef where
::DefId: Unpin,
::InternedSubstitution: Unpin,

impl UnwindSafe for TraitRef where
::DefId: UnwindSafe,
::InternedSubstitution: UnwindSafe,

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> Cast for T

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fn cast(self, interner: U::Interner) -> U where
Self: CastTo,
U: HasInterner,

Cast a value to type U using CastTo.

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impl<T, I> CastTo<DomainGoal> for T where
T: CastTo<WhereClause>,
I: Interner,

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fn cast_to(self, interner: I) -> DomainGoal

Cast a value to type T.

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impl<T, I> CastTo<Goal> for T where
I: Interner,
T: CastTo<DomainGoal>,

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fn cast_to(self, interner: I) -> Goal

Cast a value to type T.

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impl<T, I> CastTo<ProgramClause> for T where
T: CastTo<DomainGoal>,
I: Interner,

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fn cast_to(self, interner: I) -> ProgramClause

Cast a value to type T.

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impl<T, I> CouldMatch<T> for T where
T: Zip + HasInterner<Interner = I> + ?Sized,
I: Interner,

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fn could_match(
 &self,
 interner: I,
 db: &dyn UnificationDatabase,
 other: &T
) -> bool

Checks whether self and other could possibly match.

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, I> Shift for T where
T: Fold,
I: Interner,

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fn shifted_in(self, interner: I) -> <T as Fold>::Result

Shifts this term in one level of binders.

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fn shifted_in_from(
 self,
 interner: I,
 source_binder: DebruijnIndex
) -> <T as Fold>::Result

Shifts a term valid at outer_binder so that it is valid at the innermost binder. See DebruijnIndex::shifted_in_from for a detailed explanation. Read more

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fn shifted_out_to(
 self,
 interner: I,
 target_binder: DebruijnIndex
) -> Result<<T as Fold>::Result, NoSolution>

Shifts a term valid at the innermost binder so that it is valid at outer_binder. See DebruijnIndex::shifted_out_to for a detailed explanation. Read more

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fn shifted_out(self, interner: I) -> Result<<T as Fold>::Result, NoSolution>

Shifts this term out one level of binders.

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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impl<T, I> VisitExt for T where
I: Interner,
T: Visit,

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fn has_free_vars(&self, interner: I) -> bool

Check whether there are free (non-bound) variables.

Struct chalk_ir::TraitRef

Fields

Implementations

impl<I: Interner> TraitRef<I>

pub fn with_as(&self) -> impl Debug + '_

pub fn with_colon(&self) -> impl Debug + '_

impl<I: Interner> TraitRef<I>

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

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

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

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

Trait Implementations

impl<I: Interner> CastTo<TraitRef<I>> for TraitRef<I>

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

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

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

impl<I: Clone + Interner> Clone for TraitRef<I>

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

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

impl<I: Interner> Debug for TraitRef<I>

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

impl<I: Interner> Fold<I> for TraitRef<I>

type Result = TraitRef<I>

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

impl<I: Interner> HasInterner for TraitRef<I>

type Interner = I

impl<I: Hash + Interner> Hash for TraitRef<I>

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

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

impl<I: PartialEq + Interner> PartialEq<TraitRef<I>> for TraitRef<I>

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

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

impl<I: Interner> Visit<I> for TraitRef<I>

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

impl<I: Interner> Zip<I> for TraitRef<I>

fn zip_with<Z: Zipper<I>>( zipper: &mut Z, variance: Variance, a: &Self, b: &Self) -> Fallible<()>

impl<I: Interner> Copy for TraitRef<I> where I::InternedSubstitution: Copy,

impl<I: Eq + Interner> Eq for TraitRef<I>

impl<I: Interner> StructuralEq for TraitRef<I>

impl<I: Interner> StructuralPartialEq for TraitRef<I>

Auto Trait Implementations

impl<I> RefUnwindSafe for TraitRef<I> where <I as Interner>::DefId: RefUnwindSafe, <I as Interner>::InternedSubstitution: RefUnwindSafe,

impl<I> Send for TraitRef<I> where <I as Interner>::DefId: Send, <I as Interner>::InternedSubstitution: Send,

impl<I> Sync for TraitRef<I> where <I as Interner>::DefId: Sync, <I as Interner>::InternedSubstitution: Sync,

impl<I> Unpin for TraitRef<I> where <I as Interner>::DefId: Unpin, <I as Interner>::InternedSubstitution: Unpin,

impl<I> UnwindSafe for TraitRef<I> where <I as Interner>::DefId: UnwindSafe, <I as Interner>::InternedSubstitution: UnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> Cast for T

fn cast<U>(self, interner: U::Interner) -> U where Self: CastTo<U>, U: HasInterner,

impl<T, I> CastTo<DomainGoal<I>> for T where T: CastTo<WhereClause<I>>, I: Interner,

fn cast_to(self, interner: I) -> DomainGoal<I>

impl<T, I> CastTo<Goal<I>> for T where I: Interner, T: CastTo<DomainGoal<I>>,

fn cast_to(self, interner: I) -> Goal<I>

impl<T, I> CastTo<ProgramClause<I>> for T where T: CastTo<DomainGoal<I>>, I: Interner,

fn cast_to(self, interner: I) -> ProgramClause<I>

impl<T, I> CouldMatch<T> for T where T: Zip<I> + HasInterner<Interner = I> + ?Sized, I: Interner,

fn could_match( &self, interner: I, db: &dyn UnificationDatabase<I>, other: &T) -> bool

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T, I> Shift<I> for T where T: Fold<I>, I: Interner,

fn shifted_in(self, interner: I) -> <T as Fold<I>>::Result

fn shifted_in_from( self, interner: I, source_binder: DebruijnIndex) -> <T as Fold<I>>::Result

fn shifted_out_to( self, interner: I, target_binder: DebruijnIndex) -> Result<<T as Fold<I>>::Result, NoSolution>

fn shifted_out(self, interner: I) -> Result<<T as Fold<I>>::Result, NoSolution>

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

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

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

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

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

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

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

fn zip_with<Z: Zipper<I>>(
zipper: &mut Z,
variance: Variance,
a: &Self,
b: &Self
) -> Fallible<()>

impl<I: Interner> Copy for TraitRef<I> where
I::InternedSubstitution: Copy,

impl<I> RefUnwindSafe for TraitRef<I> where
<I as Interner>::DefId: RefUnwindSafe,
<I as Interner>::InternedSubstitution: RefUnwindSafe,

impl<I> Send for TraitRef<I> where
<I as Interner>::DefId: Send,
<I as Interner>::InternedSubstitution: Send,

impl<I> Sync for TraitRef<I> where
<I as Interner>::DefId: Sync,
<I as Interner>::InternedSubstitution: Sync,

impl<I> Unpin for TraitRef<I> where
<I as Interner>::DefId: Unpin,
<I as Interner>::InternedSubstitution: Unpin,

impl<I> UnwindSafe for TraitRef<I> where
<I as Interner>::DefId: UnwindSafe,
<I as Interner>::InternedSubstitution: UnwindSafe,

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

fn cast<U>(self, interner: U::Interner) -> U where
Self: CastTo<U>,
U: HasInterner,

impl<T, I> CastTo<DomainGoal<I>> for T where
T: CastTo<WhereClause<I>>,
I: Interner,

impl<T, I> CastTo<Goal<I>> for T where
I: Interner,
T: CastTo<DomainGoal<I>>,

impl<T, I> CastTo<ProgramClause<I>> for T where
T: CastTo<DomainGoal<I>>,
I: Interner,

impl<T, I> CouldMatch<T> for T where
T: Zip<I> + HasInterner<Interner = I> + ?Sized,
I: Interner,

fn could_match(
&self,
interner: I,
db: &dyn UnificationDatabase<I>,
other: &T
) -> bool

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, I> Shift<I> for T where
T: Fold<I>,
I: Interner,

fn shifted_in_from(
self,
interner: I,
source_binder: DebruijnIndex
) -> <T as Fold<I>>::Result

fn shifted_out_to(
self,
interner: I,
target_binder: DebruijnIndex
) -> Result<<T as Fold<I>>::Result, NoSolution>

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<T, I> VisitExt<I> for T where
I: Interner,
T: Visit<I>,