Struct rustc_hir::hir_id::ItemLocalId

pub struct ItemLocalId {
    private: u32,
}

An ItemLocalId uniquely identifies something within a given "item-like"; that is, within a hir::Item, hir::TraitItem, or hir::ImplItem. There is no guarantee that the numerical value of a given ItemLocalId corresponds to the node's position within the owning item in any way, but there is a guarantee that the LocalItemIds within an owner occupy a dense range of integers starting at zero, so a mapping that maps all or most nodes within an "item-like" to something else can be implemented by a Vec instead of a tree or hash map.

Fields

private: u32

Implementations

impl ItemLocalId

pub const MAX_AS_U32: u32

pub const MAX: Self

pub const fn from_usize(value: usize) -> Self

pub const fn from_u32(value: u32) -> Self

pub const unsafe fn from_u32_unchecked(value: u32) -> Self

pub const fn index(self) -> usize

Extracts the value of this index as an integer.

pub const fn as_u32(self) -> u32

Extracts the value of this index as a u32.

pub const fn as_usize(self) -> usize

Extracts the value of this index as a usize.

Trait Implementations

impl Add<usize> for ItemLocalId

type Output = Self

The resulting type after applying the + operator.

fn add(self, other: usize) -> Self

Performs the + operation.

impl Clone for ItemLocalId

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for ItemLocalId

impl Debug for ItemLocalId

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

Formats the value using the given formatter.

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

fn decode(d: &mut D) -> Result<Self, D::Error>

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

fn encode(&self, e: &mut E) -> Result<(), E::Error>

impl Eq for ItemLocalId

impl From<ItemLocalId> for u32

fn from(v: ItemLocalId) -> u32

Performs the conversion.

impl From<ItemLocalId> for usize

fn from(v: ItemLocalId) -> usize

Performs the conversion.

impl From<u32> for ItemLocalId

fn from(value: u32) -> Self

Performs the conversion.

impl From<usize> for ItemLocalId

fn from(value: usize) -> Self

Performs the conversion.

impl Hash for ItemLocalId

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<CTX> HashStable<CTX> for ItemLocalId

fn hash_stable(&self, _: &mut CTX, hasher: &mut StableHasher)

impl Idx for ItemLocalId

fn new(value: usize) -> Self

fn index(self) -> usize

fn increment_by(&mut self, amount: usize)

fn plus(self, amount: usize) -> Self

impl Ord for ItemLocalId

fn cmp(&self, other: &ItemLocalId) -> 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

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

Restrict a value to a certain interval.

impl PartialEq<ItemLocalId> for ItemLocalId

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

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

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

This method tests for !=.

impl PartialOrd<ItemLocalId> for ItemLocalId

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

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

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

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

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

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

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

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

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

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

impl Step for ItemLocalId

fn steps_between(start: &Self, end: &Self) -> Option<usize>

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

recently redesigned

Returns the number of successor steps required to get from start to end.

fn forward_checked(start: Self, u: usize) -> Option<Self>

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

recently added

Returns the value that would be obtained by taking the successor of self count times.

fn backward_checked(start: Self, u: usize) -> Option<Self>

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

recently added

Returns the value that would be obtained by taking the successor of self count times.

fn forward(start: Self, count: usize) -> Self

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

recently added

Returns the value that would be obtained by taking the successor of self count times.

unsafe fn forward_unchecked(start: Self, count: usize) -> Self

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

niche optimization path

Returns the value that would be obtained by taking the successor of self count times.

fn backward(start: Self, count: usize) -> Self

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

recently added

Returns the value that would be obtained by taking the predecessor of self count times.

unsafe fn backward_unchecked(start: Self, count: usize) -> Self

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

niche optimization path

Returns the value that would be obtained by taking the predecessor of self count times.

impl StructuralEq for ItemLocalId

impl StructuralPartialEq for ItemLocalId