Struct rustc::ty::UpvarId

pub struct UpvarId {
    pub var_id: HirId,
    pub closure_expr_id: LocalDefId,
}

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Upvars do not get their own node-id. Instead, we use the pair of the original var id (that is, the root variable that is referenced by the upvar) and the id of the closure expression.

Fields

var_id: HirId

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

closure_expr_id: LocalDefId

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

Trait Implementations

impl<'tcx> HashStable<StableHashingContext<'tcx>> for UpvarId

fn hash_stable<W: StableHasherResult>(
    &self,
    __ctx: &mut StableHashingContext<'tcx>,
    __hasher: &mut StableHasher<W>
)

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

impl Clone for UpvarId

fn clone(&self) -> UpvarId

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for UpvarId

impl PartialEq for UpvarId

fn eq(&self, __arg_0: &UpvarId) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &UpvarId) -> bool

This method tests for !=.

impl Eq for UpvarId

impl Hash for UpvarId

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl Encodable for UpvarId

fn encode<__S: Encoder>(&self, __arg_0: &mut __S) -> Result<(), __S::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

impl Decodable for UpvarId

fn decode<__D: Decoder>(__arg_0: &mut __D) -> Result<UpvarId, __D::Error>

🔬 This is a nightly-only experimental API. (rustc_private)

this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?

impl Debug for UpvarId

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

Formats the value using the given formatter.