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

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)

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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?

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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🔬 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)

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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
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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
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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]

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Defaults to returning an error (see SpecializationError).

impl UseSpecializedDecodable for HirId
[src]

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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)

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

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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)

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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 R

Performs the indexing (container[index]) operation.

Auto Trait Implementations

impl Send for HirId

impl Sync for HirId

Blanket Implementations

impl<T> MaybeResult for T
[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, T> Captures for T where
    T: ?Sized
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

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

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

recently added

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

impl<T> From for T
[src]

Performs the conversion.

impl<T, U> Into for T where
    U: From<T>, 
[src]

Performs the conversion.

impl<T, U> TryFrom for T where
    T: From<U>, 
[src]

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> Borrow for T where
    T: ?Sized
[src]

Important traits for &'a mut R

Immutably borrows from an owned value. Read more

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> BorrowMut for T where
    T: ?Sized
[src]

Important traits for &'a mut R

Mutably borrows from an owned value. Read more

impl<T> Any for T where
    T: 'static + ?Sized
[src]

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

this method will likely be replaced by an associated static

Gets the TypeId of self. Read more

impl<T> Encodable for T where
    T: UseSpecializedEncodable + ?Sized
[src]

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

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impl<T> Decodable for T where
    T: UseSpecializedDecodable
[src]

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

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impl<E> SpecializationError for E
[src]

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

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Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S is the encoder/decoder state type, T is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more

impl<T> Erased for T
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impl<T> Send for T where
    T: ?Sized
[src]

impl<T> Sync for T where
    T: ?Sized
[src]

impl<T> Erased for T