pub struct Lifetime<I: Interner> { /* private fields */ }
Expand description
A Rust lifetime.
Implementations
sourceimpl<I: Interner> Lifetime<I>
impl<I: Interner> Lifetime<I>
sourcepub fn new(interner: I, data: impl CastTo<LifetimeData<I>>) -> Self
pub fn new(interner: I, data: impl CastTo<LifetimeData<I>>) -> Self
Create a lifetime from lifetime data (or something that can be cast to lifetime data).
sourcepub fn interned(&self) -> &I::InternedLifetime
pub fn interned(&self) -> &I::InternedLifetime
Gets the interned value.
sourcepub fn data(&self, interner: I) -> &LifetimeData<I>
pub fn data(&self, interner: I) -> &LifetimeData<I>
Gets the lifetime data.
sourcepub fn bound_var(&self, interner: I) -> Option<BoundVar>
pub fn bound_var(&self, interner: I) -> Option<BoundVar>
If this is a Lifetime::BoundVar(d)
, returns Some(d)
else None
.
sourcepub fn inference_var(&self, interner: I) -> Option<InferenceVar>
pub fn inference_var(&self, interner: I) -> Option<InferenceVar>
If this is a Lifetime::InferenceVar(d)
, returns Some(d)
else None
.
sourcepub fn needs_shift(&self, interner: I) -> bool
pub fn needs_shift(&self, interner: I) -> bool
True if this lifetime is a “bound” lifetime, and hence needs to be shifted across binders. Meant for debug assertions.
Trait Implementations
sourceimpl<I: Interner> CastTo<GenericArg<I>> for Lifetime<I>
impl<I: Interner> CastTo<GenericArg<I>> for Lifetime<I>
sourcefn cast_to(self, interner: I) -> GenericArg<I>
fn cast_to(self, interner: I) -> GenericArg<I>
Cast a value to type T
.
sourceimpl<I: Interner> Fold<I> for Lifetime<I>
impl<I: Interner> Fold<I> for Lifetime<I>
“Folding” a lifetime invokes the fold_lifetime
method on the folder; this
usually (in turn) invokes super_fold_lifetime
to fold the individual
parts.
type Result = Lifetime<I>
type Result = Lifetime<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
sourcefn fold_with<E>(
self,
folder: &mut dyn Folder<I, Error = E>,
outer_binder: DebruijnIndex
) -> Result<Self::Result, E>
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
sourceimpl<I: Interner> HasInterner for Lifetime<I>
impl<I: Interner> HasInterner for Lifetime<I>
type Interner = I
type Interner = I
The interner associated with the type.
sourceimpl<I: Ord + Interner> Ord for Lifetime<I> where
I::InternedLifetime: Ord,
impl<I: Ord + Interner> Ord for Lifetime<I> where
I::InternedLifetime: Ord,
sourceimpl<I: PartialEq + Interner> PartialEq<Lifetime<I>> for Lifetime<I> where
I::InternedLifetime: PartialEq,
impl<I: PartialEq + Interner> PartialEq<Lifetime<I>> for Lifetime<I> where
I::InternedLifetime: PartialEq,
sourceimpl<I: PartialOrd + Interner> PartialOrd<Lifetime<I>> for Lifetime<I> where
I::InternedLifetime: PartialOrd,
impl<I: PartialOrd + Interner> PartialOrd<Lifetime<I>> for Lifetime<I> where
I::InternedLifetime: PartialOrd,
sourcefn partial_cmp(&self, other: &Lifetime<I>) -> Option<Ordering>
fn partial_cmp(&self, other: &Lifetime<I>) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
sourceimpl<I> SuperFold<I> for Lifetime<I> where
I: Interner,
impl<I> SuperFold<I> for Lifetime<I> where
I: Interner,
sourcefn super_fold_with<E>(
self,
folder: &mut dyn Folder<I, Error = E>,
outer_binder: DebruijnIndex
) -> Result<Lifetime<I>, E>
fn super_fold_with<E>(
self,
folder: &mut dyn Folder<I, Error = E>,
outer_binder: DebruijnIndex
) -> Result<Lifetime<I>, E>
Recursively folds the value.
sourceimpl<I: Interner> SuperVisit<I> for Lifetime<I>
impl<I: Interner> SuperVisit<I> for Lifetime<I>
sourcefn super_visit_with<B>(
&self,
visitor: &mut dyn Visitor<I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B>
fn super_visit_with<B>(
&self,
visitor: &mut dyn Visitor<I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B>
Recursively visits the type contents.
sourceimpl<I: Interner> Visit<I> for Lifetime<I>
impl<I: Interner> Visit<I> for Lifetime<I>
sourcefn visit_with<B>(
&self,
visitor: &mut dyn Visitor<I, BreakTy = B>,
outer_binder: DebruijnIndex
) -> ControlFlow<B>
fn visit_with<B>(
&self,
visitor: &mut dyn Visitor<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 more
impl<I: Copy + Interner> Copy for Lifetime<I> where
I::InternedLifetime: Copy,
impl<I: Eq + Interner> Eq for Lifetime<I> where
I::InternedLifetime: Eq,
impl<I: Interner> StructuralEq for Lifetime<I>
impl<I: Interner> StructuralPartialEq for Lifetime<I>
Auto Trait Implementations
impl<I> RefUnwindSafe for Lifetime<I> where
<I as Interner>::InternedLifetime: RefUnwindSafe,
impl<I> Send for Lifetime<I> where
<I as Interner>::InternedLifetime: Send,
impl<I> Sync for Lifetime<I> where
<I as Interner>::InternedLifetime: Sync,
impl<I> Unpin for Lifetime<I> where
<I as Interner>::InternedLifetime: Unpin,
impl<I> UnwindSafe for Lifetime<I> where
<I as Interner>::InternedLifetime: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> Cast for T
impl<T> Cast for T
sourcefn cast<U>(self, interner: U::Interner) -> U where
Self: CastTo<U>,
U: HasInterner,
fn cast<U>(self, interner: U::Interner) -> U where
Self: CastTo<U>,
U: HasInterner,
Cast a value to type U
using CastTo
.
sourceimpl<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,
sourcefn could_match(
&self,
interner: I,
db: &dyn UnificationDatabase<I>,
other: &T
) -> bool
fn could_match(
&self,
interner: I,
db: &dyn UnificationDatabase<I>,
other: &T
) -> bool
Checks whether self
and other
could possibly match.
sourceimpl<T, I> Shift<I> for T where
T: Fold<I>,
I: Interner,
impl<T, I> Shift<I> for T where
T: Fold<I>,
I: Interner,
sourcefn shifted_in(self, interner: I) -> <T as Fold<I>>::Result
fn shifted_in(self, interner: I) -> <T as Fold<I>>::Result
Shifts this term in one level of binders.
sourcefn shifted_in_from(
self,
interner: I,
source_binder: DebruijnIndex
) -> <T as Fold<I>>::Result
fn shifted_in_from(
self,
interner: I,
source_binder: DebruijnIndex
) -> <T as Fold<I>>::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
sourcefn shifted_out_to(
self,
interner: I,
target_binder: DebruijnIndex
) -> Result<<T as Fold<I>>::Result, NoSolution>
fn shifted_out_to(
self,
interner: I,
target_binder: DebruijnIndex
) -> Result<<T as Fold<I>>::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
sourcefn shifted_out(self, interner: I) -> Result<<T as Fold<I>>::Result, NoSolution>
fn shifted_out(self, interner: I) -> Result<<T as Fold<I>>::Result, NoSolution>
Shifts this term out one level of binders.
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more