Type Alias TypeError

pub type TypeError<'tcx> = TypeError<TyCtxt<'tcx>>;

Aliased Type

enum TypeError<'tcx> {
    Mismatch,
    ConstnessMismatch(ExpectedFound<BoundConstness>),
    PolarityMismatch(ExpectedFound<PredicatePolarity>),
    SafetyMismatch(ExpectedFound<Safety>),
    AbiMismatch(ExpectedFound<Abi>),
    Mutability,
    ArgumentMutability(usize),
    TupleSize(ExpectedFound<usize>),
    FixedArraySize(ExpectedFound<u64>),
    ArgCount,
    RegionsDoesNotOutlive(Region<'tcx>, Region<'tcx>),
    RegionsInsufficientlyPolymorphic(BoundRegion, Region<'tcx>),
    RegionsPlaceholderMismatch,
    Sorts(ExpectedFound<Ty<'tcx>>),
    ArgumentSorts(ExpectedFound<Ty<'tcx>>, usize),
    Traits(ExpectedFound<DefId>),
    VariadicMismatch(ExpectedFound<bool>),
    CyclicTy(Ty<'tcx>),
    CyclicConst(Const<'tcx>),
    ProjectionMismatched(ExpectedFound<DefId>),
    ExistentialMismatch(ExpectedFound<&'tcx RawList<(), Binder<TyCtxt<'tcx>, ExistentialPredicate<TyCtxt<'tcx>>>>>),
    ConstMismatch(ExpectedFound<Const<'tcx>>),
    IntrinsicCast,
    TargetFeatureCast(DefId),
}

Variants

Mismatch

ConstnessMismatch(ExpectedFound<BoundConstness>)

PolarityMismatch(ExpectedFound<PredicatePolarity>)

SafetyMismatch(ExpectedFound<Safety>)

AbiMismatch(ExpectedFound<Abi>)

Mutability

ArgumentMutability(usize)

TupleSize(ExpectedFound<usize>)

FixedArraySize(ExpectedFound<u64>)

ArgCount

RegionsDoesNotOutlive(Region<'tcx>, Region<'tcx>)

RegionsInsufficientlyPolymorphic(BoundRegion, Region<'tcx>)

RegionsPlaceholderMismatch

Sorts(ExpectedFound<Ty<'tcx>>)

ArgumentSorts(ExpectedFound<Ty<'tcx>>, usize)

Traits(ExpectedFound<DefId>)

VariadicMismatch(ExpectedFound<bool>)

CyclicTy(Ty<'tcx>)

Instantiating a type variable with the given type would have created a cycle (because it appears somewhere within that type).

CyclicConst(Const<'tcx>)

ProjectionMismatched(ExpectedFound<DefId>)

ExistentialMismatch(ExpectedFound<&'tcx RawList<(), Binder<TyCtxt<'tcx>, ExistentialPredicate<TyCtxt<'tcx>>>>>)

ConstMismatch(ExpectedFound<Const<'tcx>>)

IntrinsicCast

TargetFeatureCast(DefId)

Safe #[target_feature] functions are not assignable to safe function pointers.

Trait Implementations

impl<'tcx> TypeErrorToStringExt<'tcx> for TypeError<'tcx>

fn to_string(self, tcx: TyCtxt<'tcx>) -> Cow<'static, str>

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: 32 bytes

Size for each variant:

• Mismatch: 0 bytes
• ConstnessMismatch: 2 bytes
• PolarityMismatch: 2 bytes
• SafetyMismatch: 2 bytes
• AbiMismatch: 4 bytes
• Mutability: 0 bytes
• ArgumentMutability: 15 bytes
• TupleSize: 23 bytes
• FixedArraySize: 23 bytes
• ArgCount: 0 bytes
• RegionsDoesNotOutlive: 23 bytes
• RegionsInsufficientlyPolymorphic: 31 bytes
• RegionsPlaceholderMismatch: 0 bytes
• Sorts: 23 bytes
• ArgumentSorts: 31 bytes
• Traits: 19 bytes
• VariadicMismatch: 2 bytes
• CyclicTy: 15 bytes
• CyclicConst: 15 bytes
• ProjectionMismatched: 19 bytes
• ExistentialMismatch: 23 bytes
• ConstMismatch: 23 bytes
• IntrinsicCast: 0 bytes
• TargetFeatureCast: 11 bytes