Struct chalk_ir::Goal [−][src]
pub struct Goal<I: Interner> { /* fields omitted */ }
Expand description
A general goal; this is the full range of questions you can pose to Chalk.
Implementations
Gets the interned goal.
pub fn quantify(
self,
interner: &I,
kind: QuantifierKind,
binders: VariableKinds<I>
) -> Goal<I>
[src]
pub fn quantify(
self,
interner: &I,
kind: QuantifierKind,
binders: VariableKinds<I>
) -> Goal<I>
[src]Create a goal using a forall
or exists
quantifier.
Takes a goal G
and turns it into compatible { G }
.
Create an implication goal that holds if the predicates are true.
True if this goal is “trivially true” – i.e., no work is required to prove it.
Creates a single goal that only holds if a list of goals holds.
Trait Implementations
Folding a goal invokes the fold_goal
callback (which will, by
default, invoke super-fold).
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.
impl<I: PartialOrd + Interner> PartialOrd<Goal<I>> for Goal<I> where
I::InternedGoal: PartialOrd,
[src]
impl<I: PartialOrd + Interner> PartialOrd<Goal<I>> for Goal<I> where
I::InternedGoal: PartialOrd,
[src]This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
Superfold folds recursively.
fn super_fold_with<'i>(
self,
folder: &mut dyn Folder<'i, I>,
outer_binder: DebruijnIndex
) -> Fallible<Self::Result> where
I: 'i,
[src]
fn super_fold_with<'i>(
self,
folder: &mut dyn Folder<'i, I>,
outer_binder: DebruijnIndex
) -> Fallible<Self::Result> where
I: 'i,
[src]Recursively folds the value.
fn super_visit_with<'i, B>(
&self,
visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
[src]
fn super_visit_with<'i, B>(
&self,
visitor: &mut dyn Visitor<'i, I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B> where
I: 'i,
[src]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,
[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
Auto Trait Implementations
impl<I> RefUnwindSafe for Goal<I> where
<I as Interner>::InternedGoal: RefUnwindSafe,
impl<I> Send for Goal<I> where
<I as Interner>::InternedGoal: Send,
impl<I> Sync for Goal<I> where
<I as Interner>::InternedGoal: Sync,
impl<I> Unpin for Goal<I> where
<I as Interner>::InternedGoal: Unpin,
impl<I> UnwindSafe for Goal<I> where
<I as Interner>::InternedGoal: UnwindSafe,
Blanket Implementations
Mutably borrows from an owned value. Read more
Cast a value to type U
using CastTo
.
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.