Struct rustc_hir::hir_id::ItemLocalId
source · [−]pub struct ItemLocalId {
private: u32,
}
Expand description
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 LocalItemId
s 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
sourceimpl ItemLocalId
impl ItemLocalId
sourcepub const MAX_AS_U32: u32 = 4_294_967_040u32
pub const MAX_AS_U32: u32 = 4_294_967_040u32
Maximum value the index can take, as a u32
.
sourcepub const fn from_usize(value: usize) -> Self
pub const fn from_usize(value: usize) -> Self
sourcepub const unsafe fn from_u32_unchecked(value: u32) -> Self
pub const unsafe fn from_u32_unchecked(value: u32) -> Self
Creates a new index from a given u32
.
Safety
The provided value must be less than or equal to the maximum value for the newtype. Providing a value outside this range is undefined due to layout restrictions.
Prefer using from_u32
.
sourceimpl ItemLocalId
impl ItemLocalId
sourcepub const INVALID: ItemLocalId = ItemLocalId::MAX
pub const INVALID: ItemLocalId = ItemLocalId::MAX
Signal local id which should never be used.
Trait Implementations
sourceimpl Add<usize> for ItemLocalId
impl Add<usize> for ItemLocalId
sourceimpl Clone for ItemLocalId
impl Clone for ItemLocalId
sourcefn clone(&self) -> ItemLocalId
fn clone(&self) -> ItemLocalId
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for ItemLocalId
impl Debug for ItemLocalId
sourceimpl<E: Encoder> Encodable<E> for ItemLocalId
impl<E: Encoder> Encodable<E> for ItemLocalId
sourceimpl From<ItemLocalId> for u32
impl From<ItemLocalId> for u32
sourcefn from(v: ItemLocalId) -> u32
fn from(v: ItemLocalId) -> u32
Converts to this type from the input type.
sourceimpl From<ItemLocalId> for usize
impl From<ItemLocalId> for usize
sourcefn from(v: ItemLocalId) -> usize
fn from(v: ItemLocalId) -> usize
Converts to this type from the input type.
sourceimpl From<u32> for ItemLocalId
impl From<u32> for ItemLocalId
sourceimpl From<usize> for ItemLocalId
impl From<usize> for ItemLocalId
sourceimpl Hash for ItemLocalId
impl Hash for ItemLocalId
sourceimpl<__CTX> HashStable<__CTX> for ItemLocalId where
__CTX: HashStableContext,
impl<__CTX> HashStable<__CTX> for ItemLocalId where
__CTX: HashStableContext,
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
sourceimpl Idx for ItemLocalId
impl Idx for ItemLocalId
sourceimpl Ord for ItemLocalId
impl Ord for ItemLocalId
sourceimpl PartialEq<ItemLocalId> for ItemLocalId
impl PartialEq<ItemLocalId> for ItemLocalId
sourcefn eq(&self, other: &ItemLocalId) -> bool
fn eq(&self, other: &ItemLocalId) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &ItemLocalId) -> bool
fn ne(&self, other: &ItemLocalId) -> bool
This method tests for !=
.
sourceimpl PartialOrd<ItemLocalId> for ItemLocalId
impl PartialOrd<ItemLocalId> for ItemLocalId
sourcefn partial_cmp(&self, other: &ItemLocalId) -> Option<Ordering>
fn partial_cmp(&self, other: &ItemLocalId) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
sourceimpl Step for ItemLocalId
impl Step for ItemLocalId
sourcefn steps_between(start: &Self, end: &Self) -> Option<usize>
fn steps_between(start: &Self, end: &Self) -> Option<usize>
step_trait
)Returns the number of successor steps required to get from start
to end
. Read more
sourcefn forward_checked(start: Self, u: usize) -> Option<Self>
fn forward_checked(start: Self, u: usize) -> Option<Self>
step_trait
)Returns the value that would be obtained by taking the successor
of self
count
times. Read more
sourcefn backward_checked(start: Self, u: usize) -> Option<Self>
fn backward_checked(start: Self, u: usize) -> Option<Self>
step_trait
)Returns the value that would be obtained by taking the predecessor
of self
count
times. Read more
sourcefn forward(start: Self, count: usize) -> Self
fn forward(start: Self, count: usize) -> Self
step_trait
)Returns the value that would be obtained by taking the successor
of self
count
times. Read more
sourceunsafe fn forward_unchecked(start: Self, count: usize) -> Self
unsafe fn forward_unchecked(start: Self, count: usize) -> Self
step_trait
)Returns the value that would be obtained by taking the successor
of self
count
times. Read more
sourcefn backward(start: Self, count: usize) -> Self
fn backward(start: Self, count: usize) -> Self
step_trait
)Returns the value that would be obtained by taking the predecessor
of self
count
times. Read more
sourceunsafe fn backward_unchecked(start: Self, count: usize) -> Self
unsafe fn backward_unchecked(start: Self, count: usize) -> Self
step_trait
)Returns the value that would be obtained by taking the predecessor
of self
count
times. Read more
sourceimpl<HirCtx: HashStableContext> ToStableHashKey<HirCtx> for ItemLocalId
impl<HirCtx: HashStableContext> ToStableHashKey<HirCtx> for ItemLocalId
type KeyType = ItemLocalId
fn to_stable_hash_key(&self, _: &HirCtx) -> ItemLocalId
impl Copy for ItemLocalId
impl Eq for ItemLocalId
impl StructuralEq for ItemLocalId
impl StructuralPartialEq for ItemLocalId
impl TrustedStep for ItemLocalId
Auto Trait Implementations
impl RefUnwindSafe for ItemLocalId
impl Send for ItemLocalId
impl Sync for ItemLocalId
impl Unpin for ItemLocalId
impl UnwindSafe for ItemLocalId
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more
Layout
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.
Size: 4 bytes