Struct rustc_hir::hir::Item

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pub struct Item<'hir> {
    pub ident: Ident,
    pub owner_id: OwnerId,
    pub kind: ItemKind<'hir>,
    pub span: Span,
    pub vis_span: Span,
}
Expand description

An item

The name might be a dummy name in case of anonymous items

Fields§

§ident: Ident§owner_id: OwnerId§kind: ItemKind<'hir>§span: Span§vis_span: Span

Implementations§

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impl<'hir> Item<'hir>

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pub fn hir_id(&self) -> HirId

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pub fn item_id(&self) -> ItemId

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pub fn expect_extern_crate(&self) -> Option<Symbol>

Expect an ItemKind::ExternCrate or panic.

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pub fn expect_use(&self) -> (&'hir UsePath<'hir>, UseKind)

Expect an ItemKind::Use or panic.

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pub fn expect_static(&self) -> (&'hir Ty<'hir>, Mutability, BodyId)

Expect an ItemKind::Static or panic.

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pub fn expect_const(&self) -> (&'hir Ty<'hir>, BodyId)

Expect an ItemKind::Const or panic.

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pub fn expect_fn(&self) -> (&FnSig<'hir>, &'hir Generics<'hir>, BodyId)

Expect an ItemKind::Fn or panic.

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pub fn expect_macro(&self) -> (&MacroDef, MacroKind)

Expect an ItemKind::Macro or panic.

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pub fn expect_mod(&self) -> &'hir Mod<'hir>

Expect an ItemKind::Mod or panic.

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pub fn expect_foreign_mod(&self) -> (Abi, &'hir [ForeignItemRef])

Expect an ItemKind::ForeignMod or panic.

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pub fn expect_global_asm(&self) -> &'hir InlineAsm<'hir>

Expect an ItemKind::GlobalAsm or panic.

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pub fn expect_ty_alias(&self) -> (&'hir Ty<'hir>, &'hir Generics<'hir>)

Expect an ItemKind::TyAlias or panic.

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pub fn expect_opaque_ty(&self) -> &OpaqueTy<'hir>

An opaque impl Trait type alias, e.g., type Foo = impl Bar;. Expect an ItemKind::OpaqueTy or panic.

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pub fn expect_enum(&self) -> (&EnumDef<'hir>, &'hir Generics<'hir>)

Expect an ItemKind::Enum or panic.

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pub fn expect_struct(&self) -> (&VariantData<'hir>, &'hir Generics<'hir>)

Expect an ItemKind::Struct or panic.

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pub fn expect_union(&self) -> (&VariantData<'hir>, &'hir Generics<'hir>)

A union definition, e.g., union Foo<A, B> {x: A, y: B}. Expect an ItemKind::Union or panic.

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pub fn expect_trait(
    self
) -> (IsAuto, Unsafety, &'hir Generics<'hir>, GenericBounds<'hir>, &'hir [TraitItemRef])

Expect an ItemKind::Trait or panic.

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pub fn expect_trait_alias(&self) -> (&'hir Generics<'hir>, GenericBounds<'hir>)

Expect an ItemKind::TraitAlias or panic.

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pub fn expect_impl(&self) -> &'hir Impl<'hir>

Expect an ItemKind::Impl or panic.

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fn expect_failed(&self, expected: &'static str) -> !

Trait Implementations§

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impl<'tcx> ArenaAllocatable<'tcx, IsNotCopy> for Item<'tcx>

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fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut Self

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fn allocate_from_iter<'a>(
    arena: &'a Arena<'tcx>,
    iter: impl IntoIterator<Item = Self>
) -> &'a mut [Self]

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impl<'hir> Debug for Item<'hir>

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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<'hir, __CTX> HashStable<__CTX> for Item<'hir>where
    __CTX: HashStableContext,

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fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

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impl<'hir> Into<OwnerNode<'hir>> for &'hir Item<'hir>

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fn into(self) -> OwnerNode<'hir>

Converts this type into the (usually inferred) input type.

Auto Trait Implementations§

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impl<'hir> !RefUnwindSafe for Item<'hir>

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impl<'hir> !Send for Item<'hir>

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impl<'hir> !Sync for Item<'hir>

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impl<'hir> Unpin for Item<'hir>

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impl<'hir> !UnwindSafe for Item<'hir>

Blanket Implementations§

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impl<T> Any for Twhere
    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> Borrow<T> for Twhere
    T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

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

const: unstable · source§

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
    U: From<T>,

const: unstable · source§

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, U> TryFrom<U> for Twhere
    U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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 Twhere
    U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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: 80 bytes