Enum chalk_engine::Literal
source · pub enum Literal<I: Interner> {
Positive(InEnvironment<Goal<I>>),
Negative(InEnvironment<Goal<I>>),
}
Expand description
Either A
or ~A
, where A
is a Env |- Goal
.
Variants§
Positive(InEnvironment<Goal<I>>)
Negative(InEnvironment<Goal<I>>)
Trait Implementations§
source§impl<I: Interner> PartialEq<Literal<I>> for Literal<I>
impl<I: Interner> PartialEq<Literal<I>> for Literal<I>
source§impl<I: Interner> TypeFoldable<I> for Literal<I>
impl<I: Interner> TypeFoldable<I> for Literal<I>
source§fn try_fold_with<E>(
self,
folder: &mut dyn FallibleTypeFolder<I, Error = E>,
outer_binder: DebruijnIndex
) -> Result<Self, E>
fn try_fold_with<E>(
self,
folder: &mut dyn FallibleTypeFolder<I, Error = E>,
outer_binder: DebruijnIndex
) -> Result<Self, 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 moresource§fn fold_with(
self,
folder: &mut dyn TypeFolder<I, Error = Infallible>,
outer_binder: DebruijnIndex
) -> Self
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
. Read moresource§impl<I: Interner> TypeVisitable<I> for Literal<I>
impl<I: Interner> TypeVisitable<I> for Literal<I>
source§fn visit_with<B>(
&self,
visitor: &mut dyn TypeVisitor<I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B>
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. Read moreimpl<I: Interner> Eq for Literal<I>
Auto Trait Implementations§
impl<I> RefUnwindSafe for Literal<I>where
<I as Interner>::InternedGoal: RefUnwindSafe,
<I as Interner>::InternedProgramClauses: RefUnwindSafe,
impl<I> Send for Literal<I>where
<I as Interner>::InternedGoal: Send,
<I as Interner>::InternedProgramClauses: Send,
impl<I> Sync for Literal<I>where
<I as Interner>::InternedGoal: Sync,
<I as Interner>::InternedProgramClauses: Sync,
impl<I> Unpin for Literal<I>where
<I as Interner>::InternedGoal: Unpin,
<I as Interner>::InternedProgramClauses: Unpin,
impl<I> UnwindSafe for Literal<I>where
<I as Interner>::InternedGoal: UnwindSafe,
<I as Interner>::InternedProgramClauses: UnwindSafe,
Blanket Implementations§
source§impl<T> Cast for T
impl<T> Cast for T
source§fn cast<U>(self, interner: <U as HasInterner>::Interner) -> Uwhere
Self: CastTo<U>,
U: HasInterner,
fn cast<U>(self, interner: <U as HasInterner>::Interner) -> Uwhere
Self: CastTo<U>,
U: HasInterner,
Cast a value to type
U
using CastTo
.source§impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T, I> Shift<I> for Twhere
T: TypeFoldable<I>,
I: Interner,
impl<T, I> Shift<I> for Twhere
T: TypeFoldable<I>,
I: Interner,
source§fn shifted_in(self, interner: I) -> T
fn shifted_in(self, interner: I) -> T
Shifts this term in one level of binders.
source§fn shifted_in_from(self, interner: I, source_binder: DebruijnIndex) -> T
fn shifted_in_from(self, interner: I, source_binder: DebruijnIndex) -> T
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 moresource§fn shifted_out_to(
self,
interner: I,
target_binder: DebruijnIndex
) -> Result<T, NoSolution>
fn shifted_out_to(
self,
interner: I,
target_binder: DebruijnIndex
) -> Result<T, 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 moresource§fn shifted_out(self, interner: I) -> Result<T, NoSolution>
fn shifted_out(self, interner: I) -> Result<T, NoSolution>
Shifts this term out one level of binders.
source§impl<T, I> VisitExt<I> for Twhere
I: Interner,
T: TypeVisitable<I>,
impl<T, I> VisitExt<I> for Twhere
I: Interner,
T: TypeVisitable<I>,
source§fn has_free_vars(&self, interner: I) -> bool
fn has_free_vars(&self, interner: I) -> bool
Check whether there are free (non-bound) variables.