pub enum DefKind {
Show 32 variants
Mod,
Struct,
Union,
Enum,
Variant,
Trait,
TyAlias,
ForeignTy,
TraitAlias,
AssocTy,
TyParam,
Fn,
Const,
ConstParam,
Static(Mutability),
Ctor(CtorOf, CtorKind),
AssocFn,
AssocConst,
Macro(MacroKind),
ExternCrate,
Use,
ForeignMod,
AnonConst,
InlineConst,
OpaqueTy,
ImplTraitPlaceholder,
Field,
LifetimeParam,
GlobalAsm,
Impl,
Closure,
Generator,
}
Expand description
What kind of definition something is; e.g., mod
vs struct
.
Variants§
Mod
Struct
Refers to the struct itself, DefKind::Ctor
refers to its constructor if it exists.
Union
Enum
Variant
Refers to the variant itself, DefKind::Ctor
refers to its constructor if it exists.
Trait
TyAlias
Type alias: type Foo = Bar;
ForeignTy
Type from an extern
block.
TraitAlias
Trait alias: trait IntIterator = Iterator<Item = i32>;
AssocTy
Associated type: trait MyTrait { type Assoc; }
TyParam
Type parameter: the T
in struct Vec<T> { ... }
Fn
Const
ConstParam
Constant generic parameter: struct Foo<const N: usize> { ... }
Static(Mutability)
Ctor(CtorOf, CtorKind)
Refers to the struct or enum variant’s constructor.
The reason Ctor
exists in addition to DefKind::Struct
and
DefKind::Variant
is because structs and enum variants exist
in the type namespace, whereas struct and enum variant constructors
exist in the value namespace.
You may wonder why enum variants exist in the type namespace as opposed to the value namespace. Check out RFC 2593 for intuition on why that is.
AssocFn
Associated function: impl MyStruct { fn associated() {} }
or trait Foo { fn associated() {} }
AssocConst
Associated constant: trait MyTrait { const ASSOC: usize; }
Macro(MacroKind)
ExternCrate
Use
ForeignMod
An extern
block.
AnonConst
Anonymous constant, e.g. the 1 + 2
in [u8; 1 + 2]
InlineConst
An inline constant, e.g. const { 1 + 2 }
OpaqueTy
Opaque type, aka impl Trait
.
ImplTraitPlaceholder
A return-position impl Trait
in a trait definition
Field
LifetimeParam
Lifetime parameter: the 'a
in struct Foo<'a> { ... }
GlobalAsm
A use of global_asm!
.
Impl
Closure
Generator
Implementations§
Trait Implementations§
source§impl<__CTX> HashStable<__CTX> for DefKindwhere
__CTX: HashStableContext,
impl<__CTX> HashStable<__CTX> for DefKindwhere
__CTX: HashStableContext,
fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)
impl Copy for DefKind
impl Eq for DefKind
impl StructuralEq for DefKind
impl StructuralPartialEq for DefKind
Auto Trait Implementations§
impl RefUnwindSafe for DefKind
impl Send for DefKind
impl Sync for DefKind
impl Unpin for DefKind
impl UnwindSafe for DefKind
Blanket Implementations§
source§impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T
fn allocate_from_iter<'a>(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T] ⓘ
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: 2 bytes
Size for each variant:
Mod
: 0 bytesStruct
: 0 bytesUnion
: 0 bytesEnum
: 0 bytesVariant
: 0 bytesTrait
: 0 bytesTyAlias
: 0 bytesForeignTy
: 0 bytesTraitAlias
: 0 bytesAssocTy
: 0 bytesTyParam
: 0 bytesFn
: 0 bytesConst
: 0 bytesConstParam
: 0 bytesStatic
: 1 byteCtor
: 2 bytesAssocFn
: 0 bytesAssocConst
: 0 bytesMacro
: 1 byteExternCrate
: 0 bytesUse
: 0 bytesForeignMod
: 0 bytesAnonConst
: 0 bytesInlineConst
: 0 bytesOpaqueTy
: 0 bytesImplTraitPlaceholder
: 0 bytesField
: 0 bytesLifetimeParam
: 0 bytesGlobalAsm
: 0 bytesImpl
: 0 bytesClosure
: 0 bytesGenerator
: 0 bytes