Struct rustc_hir::hir_id::HirId

pub struct HirId {
    pub owner: LocalDefId,
    pub local_id: ItemLocalId,
}

Uniquely identifies a node in the HIR of the current crate. It is composed of the owner, which is the LocalDefId 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

owner: LocalDefId

local_id: ItemLocalId

Implementations

impl HirId

pub fn expect_owner(self) -> LocalDefId

pub fn as_owner(self) -> Option<LocalDefId>

pub fn make_owner(owner: LocalDefId) -> Self

Trait Implementations

impl Clone for HirId

fn clone(&self) -> HirId

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for HirId

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

Formats the value using the given formatter.

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

fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

impl Display for HirId

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

Formats the value using the given formatter.

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

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

impl Hash for HirId

fn hash<__H: Hasher>(&self, state: &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<HirCtx: HashStableContext> HashStable<HirCtx> for HirId

fn hash_stable(&self, hcx: &mut HirCtx, hasher: &mut StableHasher)

impl<T> Index<HirId> for HirIdVec<T>

type Output = T

The returned type after indexing.

fn index(&self, id: HirId) -> &T

Performs the indexing (container[index]) operation.

impl<T> IndexMut<HirId> for HirIdVec<T>

fn index_mut(&mut self, id: HirId) -> &mut T

Performs the mutable indexing (container[index]) operation.

impl Ord for HirId

fn cmp(&self, other: &HirId) -> Ordering

This method returns an Ordering between self and other.

#[must_use]

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<HirId> for HirId

fn eq(&self, other: &HirId) -> bool

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

fn ne(&self, other: &HirId) -> bool

This method tests for !=.

impl PartialOrd<HirId> for HirId

fn partial_cmp(&self, other: &HirId) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<HirCtx: HashStableContext> ToStableHashKey<HirCtx> for HirId

type KeyType = (DefPathHash, ItemLocalId)

fn to_stable_hash_key(&self, hcx: &HirCtx) -> (DefPathHash, ItemLocalId)

impl Copy for HirId

impl Eq for HirId

impl StructuralEq for HirId

impl StructuralPartialEq for HirId