[−][src]Enum rustc::hir::intravisit::NestedVisitorMap
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Specifies what nested things a visitor wants to visit. The most
common choice is OnlyBodies
, which will cause the visitor to
visit fn bodies for fns that it encounters, but skip over nested
item-like things.
See the comments on ItemLikeVisitor
for more details on the overall
visit strategy.
Variants
None
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Do not visit any nested things. When you add a new "non-nested" thing, you will want to audit such uses to see if they remain valid.
Use this if you are only walking some particular kind of tree (i.e., a type, or fn signature) and you don't want to thread a HIR map around.
OnlyBodies(&'this Map<'tcx>)
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Do not visit nested item-like things, but visit nested things that are inside of an item-like.
This is the most common choice. A very common pattern is
to use visit_all_item_likes()
as an outer loop,
and to have the visitor that visits the contents of each item
using this setting.
All(&'this Map<'tcx>)
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Visit all nested things, including item-likes.
This is an unusual choice. It is used when you want to
process everything within their lexical context. Typically you
kick off the visit by doing walk_krate()
.
Methods
impl<'this, 'tcx> NestedVisitorMap<'this, 'tcx>
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impl<'this, 'tcx> NestedVisitorMap<'this, 'tcx>
pub fn intra(self) -> Option<&'this Map<'tcx>>
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pub fn intra(self) -> Option<&'this Map<'tcx>>
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Returns the map to use for an "intra item-like" thing (if any). e.g., function body.
pub fn inter(self) -> Option<&'this Map<'tcx>>
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pub fn inter(self) -> Option<&'this Map<'tcx>>
🔬 This is a nightly-only experimental API. (rustc_private
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Returns the map to use for an "item-like" thing (if any). e.g., item, impl-item.
Auto Trait Implementations
impl<'this, 'tcx> !Send for NestedVisitorMap<'this, 'tcx>
impl<'this, 'tcx> !Send for NestedVisitorMap<'this, 'tcx>
impl<'this, 'tcx> !Sync for NestedVisitorMap<'this, 'tcx>
impl<'this, 'tcx> !Sync for NestedVisitorMap<'this, 'tcx>
Blanket Implementations
impl<T> MaybeResult for T
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impl<T> MaybeResult for T
fn from_ok(T) -> T
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fn from_ok(T) -> T
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fn map_same<F>(Self, F) -> T where
F: FnOnce(T) -> T,
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fn map_same<F>(Self, F) -> T where
F: FnOnce(T) -> T,
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impl<'a, T> Captures for T where
T: ?Sized,
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impl<'a, T> Captures for T where
T: ?Sized,
impl<T> From for T
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impl<T> From for T
impl<T, U> Into for T where
U: From<T>,
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impl<T, U> Into for T where
U: From<T>,
impl<T, U> TryFrom for T where
T: From<U>,
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impl<T, U> TryFrom for T where
T: From<U>,
type Error = !
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
try_from
)Performs the conversion.
impl<T> Borrow for T where
T: ?Sized,
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impl<T> Borrow for T where
T: ?Sized,
ⓘImportant traits for &'a mut Rfn borrow(&self) -> &T
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fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
impl<T, U> TryInto for T where
U: TryFrom<T>,
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impl<T, U> TryInto for T where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
try_from
)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
try_from
)Performs the conversion.
impl<T> BorrowMut for T where
T: ?Sized,
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impl<T> BorrowMut for T where
T: ?Sized,
ⓘImportant traits for &'a mut Rfn borrow_mut(&mut self) -> &mut T
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fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Any for T where
T: 'static + ?Sized,
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impl<T> Any for T where
T: 'static + ?Sized,
fn get_type_id(&self) -> TypeId
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fn get_type_id(&self) -> TypeId
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
Gets the TypeId
of self
. Read more
impl<E> SpecializationError for E
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impl<E> SpecializationError for E
fn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized,
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fn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized,
🔬 This is a nightly-only experimental API. (rustc_private
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instead?
Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S
is the encoder/decoder state type, T
is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more
impl<T> Erased for T
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impl<T> Erased for T
impl<T> Send for T where
T: ?Sized,
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impl<T> Send for T where
T: ?Sized,
impl<T> Sync for T where
T: ?Sized,
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impl<T> Sync for T where
T: ?Sized,
impl<T> Erased for T
impl<T> Erased for T