Struct chalk_ir::Substitution [−][src]
pub struct Substitution<I: Interner> { /* fields omitted */ }
Expand description
List of interned elements.
Implementations
Show debug output for the substitution.
Displays the substitution in the form < P0, .. Pn >
, or (if
the substitution is empty) as an empty string.
A substitution is an identity substitution if it looks like this
?0 := ?0
?1 := ?1
?2 := ?2
...
Basically, each value is mapped to a type or lifetime with its same index.
Apply the substitution to a value.
Gets an iterator of all type parameters.
Get the interned elements.
Returns a slice containing the elements.
Index into the sequence.
Get an iterator over the elements of the sequence.
pub fn from_fallible<E>(
interner: &I,
elements: impl IntoIterator<Item = Result<impl CastTo<GenericArg<I>>, E>>
) -> Result<Self, E>
pub fn from_fallible<E>(
interner: &I,
elements: impl IntoIterator<Item = Result<impl CastTo<GenericArg<I>>, E>>
) -> Result<Self, E>
Tries to create a sequence using an iterator of element-like things.
pub fn from_iter(
interner: &I,
elements: impl IntoIterator<Item = impl CastTo<GenericArg<I>>>
) -> Self
pub fn from_iter(
interner: &I,
elements: impl IntoIterator<Item = impl CastTo<GenericArg<I>>>
) -> Self
Create a sequence from elements
Create a sequence from a single element.
Trait Implementations
type Result = Substitution<I>
type Result = Substitution<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.
impl<I: PartialEq + Interner> PartialEq<Substitution<I>> for Substitution<I> where
I::InternedSubstitution: PartialEq,
impl<I: PartialEq + Interner> PartialEq<Substitution<I>> for Substitution<I> where
I::InternedSubstitution: PartialEq,
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
impl<I: PartialOrd + Interner> PartialOrd<Substitution<I>> for Substitution<I> where
I::InternedSubstitution: PartialOrd,
impl<I: PartialOrd + Interner> PartialOrd<Substitution<I>> for Substitution<I> where
I::InternedSubstitution: PartialOrd,
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
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
Auto Trait Implementations
impl<I> RefUnwindSafe for Substitution<I> where
<I as Interner>::InternedSubstitution: RefUnwindSafe,
impl<I> Send for Substitution<I> where
<I as Interner>::InternedSubstitution: Send,
impl<I> Sync for Substitution<I> where
<I as Interner>::InternedSubstitution: Sync,
impl<I> Unpin for Substitution<I> where
<I as Interner>::InternedSubstitution: Unpin,
impl<I> UnwindSafe for Substitution<I> where
<I as Interner>::InternedSubstitution: UnwindSafe,
Blanket Implementations
Mutably borrows from an owned value. Read more
Cast a value to type U
using CastTo
.
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.