Enum chalk_ir::WhereClause [−][src]
pub enum WhereClause<I: Interner> {
Implemented(TraitRef<I>),
AliasEq(AliasEq<I>),
LifetimeOutlives(LifetimeOutlives<I>),
TypeOutlives(TypeOutlives<I>),
}Expand description
Where clauses that can be written by a Rust programmer.
Variants
Implemented(TraitRef<I>)Type implements a trait.
Tuple Fields of Implemented
0: TraitRef<I>AliasEq(AliasEq<I>)Type is equal to an alias.
Tuple Fields of AliasEq
0: AliasEq<I>LifetimeOutlives(LifetimeOutlives<I>)One lifetime outlives another.
Tuple Fields of LifetimeOutlives
0: LifetimeOutlives<I>TypeOutlives(TypeOutlives<I>)Type outlives a lifetime.
Tuple Fields of TypeOutlives
0: TypeOutlives<I>Implementations
Turn a where clause into the WF version of it i.e.:
Implemented(T: Trait)maps toWellFormed(T: Trait)ProjectionEq(<T as Trait>::Item = Foo)maps toWellFormed(<T as Trait>::Item = Foo)- any other clause maps to itself
Same as into_well_formed_goal but with the FromEnv predicate instead of WellFormed.
Trait Implementations
Cast a value to type T.
Cast a value to type T.
Cast a value to type T.
Cast a value to type T.
Cast a value to type T.
type Result = WhereClause<I>
type Result = WhereClause<I>
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
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
type Interner = I
type Interner = I
The interner associated with the type.
This method tests for self and other values to be equal, and is used
by ==. Read more
This method tests for !=.
fn super_visit_with<'i, B>(
&self,
visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
fn super_visit_with<'i, B>(
&self,
visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
Recursively visits the type contents.
fn visit_with<'i, B>(
&self,
visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
fn visit_with<'i, B>(
&self,
visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
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
impl<I: Interner> Copy for WhereClause<I> where
I::InternedSubstitution: Copy,
I::InternedLifetime: Copy,
I::InternedType: Copy,
Auto Trait Implementations
impl<I> RefUnwindSafe for WhereClause<I> where
<I as Interner>::DefId: RefUnwindSafe,
<I as Interner>::InternedLifetime: RefUnwindSafe,
<I as Interner>::InternedSubstitution: RefUnwindSafe,
<I as Interner>::InternedType: RefUnwindSafe,
impl<I> Send for WhereClause<I> where
<I as Interner>::DefId: Send,
<I as Interner>::InternedLifetime: Send,
<I as Interner>::InternedSubstitution: Send,
<I as Interner>::InternedType: Send,
impl<I> Sync for WhereClause<I> where
<I as Interner>::DefId: Sync,
<I as Interner>::InternedLifetime: Sync,
<I as Interner>::InternedSubstitution: Sync,
<I as Interner>::InternedType: Sync,
impl<I> Unpin for WhereClause<I> where
<I as Interner>::DefId: Unpin,
<I as Interner>::InternedLifetime: Unpin,
<I as Interner>::InternedSubstitution: Unpin,
<I as Interner>::InternedType: Unpin,
impl<I> UnwindSafe for WhereClause<I> where
<I as Interner>::DefId: UnwindSafe,
<I as Interner>::InternedLifetime: UnwindSafe,
<I as Interner>::InternedSubstitution: UnwindSafe,
<I as Interner>::InternedType: UnwindSafe,
Blanket Implementations
Mutably borrows from an owned value. Read more
Cast a value to type U using CastTo.
Cast a value to type T.
Cast a value to type T.
impl<T, I> CouldMatch<T> for T where
T: Zip<I> + HasInterner<Interner = I> + ?Sized,
I: Interner,
impl<T, I> CouldMatch<T> for T where
T: Zip<I> + HasInterner<Interner = I> + ?Sized,
I: Interner,
Checks whether self and other could possibly match.
Shifts this term in one level of binders.
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
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
Shifts this term out one level of binders.