Enum rustc_hir::QPath

source ·

pub enum QPath<'hir> {
    Resolved(Option<&'hir Ty<'hir>>, &'hir Path<'hir>),
    TypeRelative(&'hir Ty<'hir>, &'hir PathSegment<'hir>),
    LangItem(LangItem, Span, Option<HirId>),
}

Expand description

Represents an optionally Self-qualified value/type path or associated extension.

To resolve the path to a DefId, call qpath_res.

Variants§

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Resolved(Option<&'hir Ty<'hir>>, &'hir Path<'hir>)

Path to a definition, optionally “fully-qualified” with a Self type, if the path points to an associated item in a trait.

E.g., an unqualified path like Clone::clone has None for Self, while <Vec<T> as Clone>::clone has Some(Vec<T>) for Self, even though they both have the same two-segment Clone::clone Path.

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TypeRelative(&'hir Ty<'hir>, &'hir PathSegment<'hir>)

Type-related paths (e.g., <T>::default or <T>::Output). Will be resolved by type-checking to an associated item.

UFCS source paths can desugar into this, with Vec::new turning into <Vec>::new, and T::X::Y::method into <<<T>::X>::Y>::method, the X and Y nodes each being a TyKind::Path(QPath::TypeRelative(..)).

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LangItem(LangItem, Span, Option<HirId>)

Reference to a #[lang = "foo"] item. HirId of the inner expr.

Enum rustc_hir::QPath

Variants§

Resolved(Option<&'hir Ty<'hir>>, &'hir Path<'hir>)

TypeRelative(&'hir Ty<'hir>, &'hir PathSegment<'hir>)

LangItem(LangItem, Span, Option<HirId>)

Implementations§

impl<'hir> QPath<'hir>

pub fn span(&self) -> Span

pub fn qself_span(&self) -> Span

pub fn last_segment_span(&self) -> Span

Trait Implementations§

impl<'hir> Clone for QPath<'hir>

fn clone(&self) -> QPath<'hir>

fn clone_from(&mut self, source: &Self)

impl<'hir> Debug for QPath<'hir>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl<'hir, __CTX> HashStable<__CTX> for QPath<'hir>where __CTX: HashStableContext,

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

impl<'hir> Copy for QPath<'hir>

Auto Trait Implementations§

impl<'hir> RefUnwindSafe for QPath<'hir>

impl<'hir> !Send for QPath<'hir>

impl<'hir> !Sync for QPath<'hir>

impl<'hir> Unpin for QPath<'hir>

impl<'hir> UnwindSafe for QPath<'hir>

Blanket Implementations§

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere T: Copy,

fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Layout§

impl<'hir, CTX> HashStable<CTX> for QPath<'hir>where __CTX: HashStableContext,

fn hash_stable(&self, hcx: &mut CTX, __hasher: &mut StableHasher)