Enum rustc_ast::ast::UseTreeKind

source ·

pub enum UseTreeKind {
    Simple(Option<Ident>, NodeId, NodeId),
    Nested(Vec<(UseTree, NodeId)>),
    Glob,
}

Expand description

Part of use item to the right of its prefix.

Variants

`Simple(Option<Ident>, NodeId, NodeId)`

use prefix or use prefix as rename

The extra NodeIds are for HIR lowering, when additional statements are created for each namespace.

`Nested(Vec<(UseTree, NodeId)>)`

use prefix::{...}

`Glob`

use prefix::*

Trait Implementations

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impl Clone for UseTreeKind

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fn clone(&self) -> UseTreeKind

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

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impl Debug for UseTreeKind

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

Formats the value using the given formatter. Read more

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fn encode(&self, encoder: &mut E)

Auto Trait Implementations

impl !RefUnwindSafe for UseTreeKind

impl !UnwindSafe for UseTreeKind

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 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> ToOwned for Twhere
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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

Uses borrowed data to replace owned data, usually by cloning. Read more

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

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>::Error>

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::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: 32 bytes

Size for each variant:

Simple: 20 bytes
Nested: 28 bytes
Glob: 0 bytes

Enum rustc_ast::ast::UseTreeKind

Variants

Simple(Option<Ident>, NodeId, NodeId)

Nested(Vec<(UseTree, NodeId)>)

Glob

Trait Implementations

impl Clone for UseTreeKind

fn clone(&self) -> UseTreeKind

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

impl Debug for UseTreeKind

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

impl<__D: Decoder> Decodable<__D> for UseTreeKind

fn decode(__decoder: &mut __D) -> Self

impl<__E: Encoder> Encodable<__E> for UseTreeKind

fn encode(&self, __encoder: &mut __E)

Auto Trait Implementations

impl !RefUnwindSafe for UseTreeKind

impl !Send for UseTreeKind

impl !Sync for UseTreeKind

impl Unpin for UseTreeKind

impl !UnwindSafe for UseTreeKind

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

`Simple(Option<Ident>, NodeId, NodeId)`

`Nested(Vec<(UseTree, NodeId)>)`

`Glob`

impl<D: Decoder> Decodable<D> for UseTreeKind

fn decode(decoder: &mut D) -> Self

impl<E: Encoder> Encodable<E> for UseTreeKind

fn encode(&self, encoder: &mut E)

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

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

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

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

impl<T> ToOwned for Twhere
T: Clone,

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

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