Enum rustc_hir::lang_items::LangItem

source ·

pub enum LangItem {
Show 114 variants    Sized,
    Unsize,
    StructuralPeq,
    StructuralTeq,
    Copy,
    Clone,
    Sync,
    DiscriminantKind,
    Discriminant,
    PointeeTrait,
    Metadata,
    DynMetadata,
    Freeze,
    Drop,
    Destruct,
    CoerceUnsized,
    DispatchFromDyn,
    TransmuteOpts,
    TransmuteTrait,
    Add,
    Sub,
    Mul,
    Div,
    Rem,
    Neg,
    Not,
    BitXor,
    BitAnd,
    BitOr,
    Shl,
    Shr,
    AddAssign,
    SubAssign,
    MulAssign,
    DivAssign,
    RemAssign,
    BitXorAssign,
    BitAndAssign,
    BitOrAssign,
    ShlAssign,
    ShrAssign,
    Index,
    IndexMut,
    UnsafeCell,
    VaList,
    Deref,
    DerefMut,
    DerefTarget,
    Receiver,
    Fn,
    FnMut,
    FnOnce,
    FnOnceOutput,
    Future,
    GeneratorState,
    Generator,
    Unpin,
    Pin,
    PartialEq,
    PartialOrd,
    Panic,
    PanicFmt,
    PanicDisplay,
    ConstPanicFmt,
    PanicBoundsCheck,
    PanicInfo,
    PanicLocation,
    PanicImpl,
    PanicNoUnwind,
    BeginPanic,
    ExchangeMalloc,
    BoxFree,
    DropInPlace,
    Oom,
    AllocLayout,
    Start,
    EhPersonality,
    EhCatchTypeinfo,
    OwnedBox,
    PhantomData,
    ManuallyDrop,
    MaybeUninit,
    AlignOffset,
    Termination,
    Try,
    Tuple,
    SliceLen,
    TryTraitFromResidual,
    TryTraitFromOutput,
    TryTraitBranch,
    TryTraitFromYeet,
    PollReady,
    PollPending,
    FromGenerator,
    GetContext,
    FuturePoll,
    FromFrom,
    OptionSome,
    OptionNone,
    ResultOk,
    ResultErr,
    ControlFlowContinue,
    ControlFlowBreak,
    IntoFutureIntoFuture,
    IntoIterIntoIter,
    IteratorNext,
    PinNewUnchecked,
    RangeFrom,
    RangeFull,
    RangeInclusiveStruct,
    RangeInclusiveNew,
    Range,
    RangeToInclusive,
    RangeTo,
}

Expand description

A representation of all the valid language items in Rust.

Variants

`Sized`

The sized lang item.

`Unsize`

The unsize lang item.

`StructuralPeq`

The structural_peq lang item.

Trait injected by #[derive(PartialEq)], (i.e. “Partial EQ”).

`StructuralTeq`

The structural_teq lang item.

Trait injected by #[derive(Eq)], (i.e. “Total EQ”; no, I will not apologize).

`Copy`

The copy lang item.

`Clone`

The clone lang item.

`Sync`

The sync lang item.

`DiscriminantKind`

The discriminant_kind lang item.

`Discriminant`

The discriminant_type lang item.

The associated item of the [DiscriminantKind] trait.

`PointeeTrait`

The pointee_trait lang item.

`Metadata`

The metadata_type lang item.

`DynMetadata`

The dyn_metadata lang item.

`Freeze`

The freeze lang item.

`Drop`

The drop lang item.

`Destruct`

The destruct lang item.

`CoerceUnsized`

The coerce_unsized lang item.

`DispatchFromDyn`

The dispatch_from_dyn lang item.

`TransmuteOpts`

The transmute_opts lang item.

`TransmuteTrait`

The transmute_trait lang item.

`Add`

The add lang item.

`Sub`

The sub lang item.

`Mul`

The mul lang item.

`Div`

The div lang item.

`Rem`

The rem lang item.

`Neg`

The neg lang item.

`Not`

The not lang item.

`BitXor`

The bitxor lang item.

`BitAnd`

The bitand lang item.

`BitOr`

The bitor lang item.

`Shl`

The shl lang item.

`Shr`

The shr lang item.

`AddAssign`

The add_assign lang item.

`SubAssign`

The sub_assign lang item.

`MulAssign`

The mul_assign lang item.

`DivAssign`

The div_assign lang item.

`RemAssign`

The rem_assign lang item.

`BitXorAssign`

The bitxor_assign lang item.

`BitAndAssign`

The bitand_assign lang item.

`BitOrAssign`

The bitor_assign lang item.

`ShlAssign`

The shl_assign lang item.

`ShrAssign`

The shr_assign lang item.

`Index`

The index lang item.

`IndexMut`

The index_mut lang item.

`UnsafeCell`

The unsafe_cell lang item.

`VaList`

The va_list lang item.

`Deref`

The deref lang item.

`DerefMut`

The deref_mut lang item.

`DerefTarget`

The deref_target lang item.

`Receiver`

The receiver lang item.

`Fn`

The Fn lang item.

`FnMut`

The fn_mut lang item.

`FnOnce`

The fn_once lang item.

`FnOnceOutput`

The fn_once_output lang item.

`Future`

The future_trait lang item.

`GeneratorState`

The generator_state lang item.

`Generator`

The generator lang item.

`Unpin`

The unpin lang item.

`Pin`

The pin lang item.

`PartialEq`

The eq lang item.

`PartialOrd`

The partial_ord lang item.

`Panic`

The panic lang item.

`PanicFmt`

The panic_fmt lang item.

`PanicDisplay`

The panic_display lang item.

`ConstPanicFmt`

The const_panic_fmt lang item.

`PanicBoundsCheck`

The panic_bounds_check lang item.

`PanicInfo`

The panic_info lang item.

`PanicLocation`

The panic_location lang item.

`PanicImpl`

The panic_impl lang item.

`PanicNoUnwind`

The panic_no_unwind lang item.

`BeginPanic`

The begin_panic lang item.

libstd panic entry point. Necessary for const eval to be able to catch it

`ExchangeMalloc`

The exchange_malloc lang item.

`BoxFree`

The box_free lang item.

`DropInPlace`

The drop_in_place lang item.

`Oom`

The oom lang item.

`AllocLayout`

The alloc_layout lang item.

`Start`

The start lang item.

`EhPersonality`

The eh_personality lang item.

`EhCatchTypeinfo`

The eh_catch_typeinfo lang item.

`OwnedBox`

The owned_box lang item.

`PhantomData`

The phantom_data lang item.

`ManuallyDrop`

The manually_drop lang item.

`MaybeUninit`

The maybe_uninit lang item.

`AlignOffset`

The align_offset lang item.

Align offset for stride != 1; must not panic.

`Termination`

The termination lang item.

`Try`

The Try lang item.

`Tuple`

The tuple_trait lang item.

`SliceLen`

The slice_len_fn lang item.

`TryTraitFromResidual`

The from_residual lang item.

`TryTraitFromOutput`

The from_output lang item.

`TryTraitBranch`

The branch lang item.

`TryTraitFromYeet`

The from_yeet lang item.

`PollReady`

The Ready lang item.

`PollPending`

The Pending lang item.

`FromGenerator`

The from_generator lang item.

`GetContext`

The get_context lang item.

`FuturePoll`

The poll lang item.

`FromFrom`

The from lang item.

`OptionSome`

The Some lang item.

`OptionNone`

The None lang item.

`ResultOk`

The Ok lang item.

`ResultErr`

The Err lang item.

`ControlFlowContinue`

The Continue lang item.

`ControlFlowBreak`

The Break lang item.

`IntoFutureIntoFuture`

The into_future lang item.

`IntoIterIntoIter`

The into_iter lang item.

`IteratorNext`

The next lang item.

`PinNewUnchecked`

The new_unchecked lang item.

`RangeFrom`

The RangeFrom lang item.

`RangeFull`

The RangeFull lang item.

`RangeInclusiveStruct`

The RangeInclusive lang item.

`RangeInclusiveNew`

The range_inclusive_new lang item.

`Range`

The Range lang item.

`RangeToInclusive`

The RangeToInclusive lang item.

`RangeTo`

The RangeTo lang item.

Implementations

source

impl LangItem

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pub fn name(self) -> Symbol

Returns the name symbol in #[lang = "$name"]. For example, LangItem::PartialEq.name() would result in sym::eq since it is #[lang = "eq"].

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pub fn group(self) -> Option<LangItemGroup>

The group that this lang item belongs to, or None if it doesn’t belong to a group.

Formats the value using the given formatter. Read more

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

Feeds this value into the given Hasher. Read more

1.3.0 · source

fn hash_slice<H>(data: &[Self], state: &mut H)where
H: Hasher,

Feeds a slice of this type into the given Hasher. Read more

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impl<CTX> HashStable<CTX> for LangItem

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

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impl PartialEq<LangItem> for LangItem

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

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

1.0.0 · source

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

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impl StructuralEq for LangItem

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impl StructuralPartialEq for LangItem

Auto Trait Implementations

impl RefUnwindSafe for LangItem

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<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,

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

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fn allocate_from_iter(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘNotable traits for &[u8]`impl Read for &[u8]impl Write for &mut [u8]`

source

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

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

source

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

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>::Error>

Performs the conversion.

source

impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::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: 1 byte

Size for each variant:

Sized: 0 bytes
Unsize: 0 bytes
StructuralPeq: 0 bytes
StructuralTeq: 0 bytes
Copy: 0 bytes
Clone: 0 bytes
Sync: 0 bytes
DiscriminantKind: 0 bytes
Discriminant: 0 bytes
PointeeTrait: 0 bytes
Metadata: 0 bytes
DynMetadata: 0 bytes
Freeze: 0 bytes
Drop: 0 bytes
Destruct: 0 bytes
CoerceUnsized: 0 bytes
DispatchFromDyn: 0 bytes
TransmuteOpts: 0 bytes
TransmuteTrait: 0 bytes
Add: 0 bytes
Sub: 0 bytes
Mul: 0 bytes
Div: 0 bytes
Rem: 0 bytes
Neg: 0 bytes
Not: 0 bytes
BitXor: 0 bytes
BitAnd: 0 bytes
BitOr: 0 bytes
Shl: 0 bytes
Shr: 0 bytes
AddAssign: 0 bytes
SubAssign: 0 bytes
MulAssign: 0 bytes
DivAssign: 0 bytes
RemAssign: 0 bytes
BitXorAssign: 0 bytes
BitAndAssign: 0 bytes
BitOrAssign: 0 bytes
ShlAssign: 0 bytes
ShrAssign: 0 bytes
Index: 0 bytes
IndexMut: 0 bytes
UnsafeCell: 0 bytes
VaList: 0 bytes
Deref: 0 bytes
DerefMut: 0 bytes
DerefTarget: 0 bytes
Receiver: 0 bytes
Fn: 0 bytes
FnMut: 0 bytes
FnOnce: 0 bytes
FnOnceOutput: 0 bytes
Future: 0 bytes
GeneratorState: 0 bytes
Generator: 0 bytes
Unpin: 0 bytes
Pin: 0 bytes
PartialEq: 0 bytes
PartialOrd: 0 bytes
Panic: 0 bytes
PanicFmt: 0 bytes
PanicDisplay: 0 bytes
ConstPanicFmt: 0 bytes
PanicBoundsCheck: 0 bytes
PanicInfo: 0 bytes
PanicLocation: 0 bytes
PanicImpl: 0 bytes
PanicNoUnwind: 0 bytes
BeginPanic: 0 bytes
ExchangeMalloc: 0 bytes
BoxFree: 0 bytes
DropInPlace: 0 bytes
Oom: 0 bytes
AllocLayout: 0 bytes
Start: 0 bytes
EhPersonality: 0 bytes
EhCatchTypeinfo: 0 bytes
OwnedBox: 0 bytes
PhantomData: 0 bytes
ManuallyDrop: 0 bytes
MaybeUninit: 0 bytes
AlignOffset: 0 bytes
Termination: 0 bytes
Try: 0 bytes
Tuple: 0 bytes
SliceLen: 0 bytes
TryTraitFromResidual: 0 bytes
TryTraitFromOutput: 0 bytes
TryTraitBranch: 0 bytes
TryTraitFromYeet: 0 bytes
PollReady: 0 bytes
PollPending: 0 bytes
FromGenerator: 0 bytes
GetContext: 0 bytes
FuturePoll: 0 bytes
FromFrom: 0 bytes
OptionSome: 0 bytes
OptionNone: 0 bytes
ResultOk: 0 bytes
ResultErr: 0 bytes
ControlFlowContinue: 0 bytes
ControlFlowBreak: 0 bytes
IntoFutureIntoFuture: 0 bytes
IntoIterIntoIter: 0 bytes
IteratorNext: 0 bytes
PinNewUnchecked: 0 bytes
RangeFrom: 0 bytes
RangeFull: 0 bytes
RangeInclusiveStruct: 0 bytes
RangeInclusiveNew: 0 bytes
Range: 0 bytes
RangeToInclusive: 0 bytes
RangeTo: 0 bytes