Struct rustc::hir::HirId[][src]

pub struct HirId {
    pub owner: DefIndex,
    pub local_id: ItemLocalId,
}
🔬 This is a nightly-only experimental API. (rustc_private)

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A HirId uniquely identifies a node in the HIR of the current crate. It is composed of the owner, which is the DefIndex of the directly enclosing hir::Item, hir::TraitItem, or hir::ImplItem (i.e. the closest "item-like"), and the local_id which is unique within the given owner.

This two-level structure makes for more stable values: One can move an item around within the source code, or add or remove stuff before it, without the local_id part of the HirId changing, which is a very useful property in incremental compilation where we have to persist things through changes to the code base.

Fields

🔬 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?

🔬 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?

Methods

impl HirId
[src]

🔬 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?

🔬 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<'a, 'gcx: 'tcx + 'a, 'tcx: 'a> DepNodeParams<'a, 'gcx, 'tcx> for HirId
[src]

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

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CAN_RECONSTRUCT_QUERY_KEY: bool = false

🔬 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?

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don't need to if the corresponding DepNode is anonymous). Read more

🔬 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 Copy for HirId
[src]

impl Clone for HirId
[src]

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl PartialEq for HirId
[src]

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

This method tests for !=.

impl Eq for HirId
[src]

impl Hash for HirId
[src]

Feeds this value into the given [Hasher]. Read more

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

impl Debug for HirId
[src]

Formats the value using the given formatter. Read more

impl UseSpecializedEncodable for HirId
[src]

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

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Defaults to returning an error (see SpecializationError).

impl UseSpecializedDecodable for HirId
[src]

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

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Defaults to returning an error (see SpecializationError).

impl<'a> HashStable<StableHashingContext<'a>> for HirId
[src]

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

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impl<'a> ToStableHashKey<StableHashingContext<'a>> for HirId
[src]

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

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🔬 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<'a, 'tcx, 'x> SpecializedDecoder<HirId> for CacheDecoder<'a, 'tcx, 'x>
[src]

🔬 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?

Decode a value in a manner specific to this decoder state.

impl<'enc, 'a, 'tcx, E> SpecializedEncoder<HirId> for CacheEncoder<'enc, 'a, 'tcx, E> where
    E: 'enc + TyEncoder
[src]

🔬 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?

Encode the value in a manner specific to this encoder state.

impl<'a, V> Index<HirId> for LocalTableInContext<'a, V>
[src]

The returned type after indexing.

Important traits for &'a mut W

Performs the indexing (container[index]) operation.

Auto Trait Implementations

impl Send for HirId

impl Sync for HirId