Enum rustc_hir::hir::QPath[−][src]

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

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

To resolve the path to a DefId, call qpath_res.

Variants

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

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.

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

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(..)).

LangItem(LangItem, Span)
Expand description

Reference to a #[lang = "foo"] item.

Implementations

impl<'hir> QPath<'hir>[src]

pub fn span(&self) -> Span[src]

Returns the span of this QPath.

pub fn qself_span(&self) -> Span[src]

Returns the span of the qself of this QPath. For example, () in <() as Trait>::method.

pub fn last_segment_span(&self) -> Span[src]

Returns the span of the last segment of this QPath. For example, method in <() as Trait>::method.

Trait Implementations

impl<'hir> Debug for QPath<'hir>[src]

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

Formats the value using the given formatter. Read more

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

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

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 T where
    T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

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

The type returned in the event of a conversion error.

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

Performs the conversion.