Enum chalk_ir::WellFormed [−][src]
Expand description
Checks whether a type or trait ref is well-formed.
Variants
Trait(TraitRef<I>)
A predicate which is true when some trait ref is well-formed. For example, given the following trait definitions:
trait Clone { ... }
trait Copy where Self: Clone { ... }
then we have the following rule:
WellFormed(?Self: Copy) :- ?Self: Copy, WellFormed(?Self: Clone)
Ty(Ty<I>)
A predicate which is true when some type is well-formed. For example, given the following type definition:
struct Set<K> where K: Hash {
...
}
then we have the following rule: WellFormedTy(Set<K>) :- Implemented(K: Hash)
.
Trait Implementations
Cast a value to type T
.
type Result = WellFormed<I>
type Result = WellFormed<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 visit_with<'i, B>(
&self,
visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
[src]
fn visit_with<'i, B>(
&self,
visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
[src]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 WellFormed<I> where
I::InternedType: Copy,
I::InternedSubstitution: Copy,
[src]Auto Trait Implementations
impl<I> RefUnwindSafe for WellFormed<I> where
<I as Interner>::DefId: RefUnwindSafe,
<I as Interner>::InternedSubstitution: RefUnwindSafe,
<I as Interner>::InternedType: RefUnwindSafe,
impl<I> Send for WellFormed<I> where
<I as Interner>::DefId: Send,
<I as Interner>::InternedSubstitution: Send,
<I as Interner>::InternedType: Send,
impl<I> Sync for WellFormed<I> where
<I as Interner>::DefId: Sync,
<I as Interner>::InternedSubstitution: Sync,
<I as Interner>::InternedType: Sync,
impl<I> Unpin for WellFormed<I> where
<I as Interner>::DefId: Unpin,
<I as Interner>::InternedSubstitution: Unpin,
<I as Interner>::InternedType: Unpin,
impl<I> UnwindSafe for WellFormed<I> where
<I as Interner>::DefId: 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
.
impl<T, I> CouldMatch<T> for T where
T: Zip<I> + HasInterner<Interner = I> + ?Sized,
I: Interner,
[src]
impl<T, I> CouldMatch<T> for T where
T: Zip<I> + HasInterner<Interner = I> + ?Sized,
I: Interner,
[src]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.