Struct rustc_hir::hir::PathSegment

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pub struct PathSegment<'hir> {
    pub ident: Ident,
    pub hir_id: HirId,
    pub res: Res,
    pub args: Option<&'hir GenericArgs<'hir>>,
    pub infer_args: bool,
}
Expand description

A segment of a path: an identifier, an optional lifetime, and a set of types.

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§ident: Ident

The identifier portion of this path segment.

§hir_id: HirId§res: Res§args: Option<&'hir GenericArgs<'hir>>

Type/lifetime parameters attached to this path. They come in two flavors: Path<A,B,C> and Path(A,B) -> C. Note that this is more than just simple syntactic sugar; the use of parens affects the region binding rules, so we preserve the distinction.

§infer_args: bool

Whether to infer remaining type parameters, if any. This only applies to expression and pattern paths, and out of those only the segments with no type parameters to begin with, e.g., Vec::new is <Vec<..>>::new::<..>.

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impl<'hir> PathSegment<'hir>

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pub fn new(ident: Ident, hir_id: HirId, res: Res) -> PathSegment<'hir>

Converts an identifier to the corresponding segment.

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pub fn invalid() -> Self

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pub fn args(&self) -> &GenericArgs<'hir>

Trait Implementations§

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impl<'tcx> ArenaAllocatable<'tcx, IsNotCopy> for PathSegment<'tcx>

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut Self

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fn allocate_from_iter<'a>(
    arena: &'a Arena<'tcx>,
    iter: impl IntoIterator<Item = Self>
) -> &'a mut [Self]

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impl<'hir> Debug for PathSegment<'hir>

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

Formats the value using the given formatter. Read more
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impl<'hir, __CTX> HashStable<__CTX> for PathSegment<'hir>where
    __CTX: HashStableContext,

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

Auto Trait Implementations§

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impl<'hir> RefUnwindSafe for PathSegment<'hir>

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

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

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impl<'hir> Unpin for PathSegment<'hir>

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impl<'hir> UnwindSafe for PathSegment<'hir>

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
    T: ?Sized,

const: unstable · source§

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
    U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::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: 48 bytes