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CrateItem

rustc_public

Struct CrateItem 

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pub struct CrateItem(pub DefId);
Expand description

A definition in the local crate (function, static, const, or constructor).

Obtain instances via all_local_items() or Crate::fn_defs(). Use CrateItem::body() to access the MIR, or convert to an Instance for monomorphized analysis.

Tuple Fields§

§0: DefId

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impl CrateItem

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pub fn expect_body(&self) -> Body

Return the MIR body of this item, panicking if unavailable.

Prefer body() for a non-panicking alternative.

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pub fn body(&self) -> Option<Body>

Return the MIR body of this item, or None if unavailable.

A body may be unavailable for foreign items or compiler built-ins.

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pub fn has_body(&self) -> bool

Check whether this item has a MIR body available.

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pub fn span(&self) -> Span

Return the source span of this item’s definition.

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pub fn kind(&self) -> ItemKind

Return what kind of item this is (function, static, const, or constructor).

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pub fn requires_monomorphization(&self) -> bool

Check whether this item is generic and requires monomorphization.

Returns true if this item, or any enclosing definition (e.g., the impl block it belongs to), has type or const generic parameters.

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pub fn ty(&self) -> Ty

Return the type of this item.

For functions, this returns the function type (e.g., fn(u32) -> bool).

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pub fn is_foreign_item(&self) -> bool

Check whether this item was declared inside an extern block.

Foreign items (e.g., extern "C" { fn foo(); }) are locally defined declarations of externally-linked symbols.

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pub fn emit_mir<W: Write>(&self, w: &mut W) -> Result<()>

Write the MIR textual representation of this item’s body to w.

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impl Clone for CrateItem

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fn clone(&self) -> CrateItem

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Copy for CrateItem

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impl CrateDef for CrateItem

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fn def_id(&self) -> DefId

Retrieve the unique identifier for the current definition.
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fn name(&self) -> Symbol

Return the fully qualified name of the current definition. Read more
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fn trimmed_name(&self) -> Symbol

Return a trimmed name of this definition. Read more
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fn krate(&self) -> Crate

Return information about the crate where this definition is declared. Read more
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fn span(&self) -> Span

Return the span of this definition.
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fn tool_attrs(&self, attr: &[Symbol]) -> Vec<Attribute>

Return registered tool attributes with the given attribute name. Read more
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fn all_tool_attrs(&self) -> Vec<Attribute>

Return all tool attributes of this definition.
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impl CrateDefType for CrateItem

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fn ty(&self) -> Ty

Returns the type of this crate item.
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fn ty_with_args(&self, args: &GenericArgs) -> Ty

Retrieve the type of this definition by instantiating and normalizing it with args. Read more
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impl CrateItem<BridgeTys> for CrateItem

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fn new(def: DefId) -> Self

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impl Debug for CrateItem

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

Formats the value using the given formatter. Read more
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impl Eq for CrateItem

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impl From<StaticDef> for CrateItem

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fn from(value: StaticDef) -> Self

Converts to this type from the input type.
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impl Hash for CrateItem

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for CrateItem

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

Equality operator ==. Read more
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fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl Serialize for CrateItem

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl StructuralPartialEq for CrateItem

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impl TryFrom<CrateItem> for Instance

Try to convert a crate item into an instance. The item cannot be generic in order to be converted into an instance.

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(item: CrateItem) -> Result<Self, Self::Error>

Performs the conversion.
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impl TryFrom<CrateItem> for StaticDef

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(value: CrateItem) -> Result<Self, Self::Error>

Performs the conversion.
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impl TryFrom<Instance> for CrateItem

Try to convert an instance into a crate item. Only user defined instances can be converted.

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type Error = Error

The type returned in the event of a conversion error.
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fn try_from(value: Instance) -> Result<Self, Self::Error>

Performs the conversion.

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Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> AnyEq for T
where T: Any + PartialEq,

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fn equals(&self, other: &(dyn Any + 'static)) -> bool

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fn as_any(&self) -> &(dyn Any + 'static)

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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T

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fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<K> IntoQueryKey<K> for K

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fn into_query_key(self) -> K

Argument conversion from Self to K. This should always be a very cheap conversion, e.g. LocalDefId::to_def_id.
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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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fn upcast(self, interner: I) -> U

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impl<I, T> UpcastFrom<I, T> for T

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fn upcast_from(from: T, _tcx: I) -> T

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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. 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: 8 bytes