Enum rustc_typeck::check::cast::CastError

source · [−]
pub enum CastError {

Show 15 variants    ErrorGuaranteed,
    CastToBool,
    CastToChar,
    DifferingKinds,
    SizedUnsizedCast,
    IllegalCast,
    NeedDeref,
    NeedViaPtr,
    NeedViaThinPtr,
    NeedViaInt,
    NonScalar,
    UnknownExprPtrKind,
    UnknownCastPtrKind,
    IntToFatCast(Option<&'static str>),
    ForeignNonExhaustiveAdt,

}

Variants

ErrorGuaranteed

CastToBool

CastToChar

DifferingKinds

SizedUnsizedCast

Cast of thin to fat raw ptr (e.g., *const () as *const [u8]).

IllegalCast

NeedDeref

NeedViaPtr

NeedViaThinPtr

NeedViaInt

NonScalar

UnknownExprPtrKind

UnknownCastPtrKind

IntToFatCast(Option<&'static str>)

Cast of int to (possibly) fat raw pointer.

Argument is the specific name of the metadata in plain words, such as “a vtable” or “a length”. If this argument is None, then the metadata is unknown, for example, when we’re typechecking a type parameter with a ?Sized bound.

ForeignNonExhaustiveAdt

Trait Implementations

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Converts to this type from the input type.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion 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: 24 bytes

Size for each variant:

  • ErrorGuaranteed: 0 bytes
  • CastToBool: 0 bytes
  • CastToChar: 0 bytes
  • DifferingKinds: 0 bytes
  • SizedUnsizedCast: 0 bytes
  • IllegalCast: 0 bytes
  • NeedDeref: 0 bytes
  • NeedViaPtr: 0 bytes
  • NeedViaThinPtr: 0 bytes
  • NeedViaInt: 0 bytes
  • NonScalar: 0 bytes
  • UnknownExprPtrKind: 0 bytes
  • UnknownCastPtrKind: 0 bytes
  • IntToFatCast: 16 bytes
  • ForeignNonExhaustiveAdt: 0 bytes