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(LangItemSpan),
}
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>)

Tuple Fields

0: Option<&'hir Ty<'hir>>
1: &'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.

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

Tuple Fields

0: &'hir Ty<'hir>
1: &'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(..)).

LangItem(LangItemSpan)

Tuple Fields

1: Span

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

Implementations

Returns the span of this QPath.

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

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

Trait Implementations

Formats the value using the given formatter. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 24 bytes

Size for each variant: