Enum rustc_typeck::check::method::probe::AutorefOrPtrAdjustment[][src]

pub enum AutorefOrPtrAdjustment<'tcx> {
    Autoref {
        mutbl: Mutability,
        unsize: Option<Ty<'tcx>>,
    },
    ToConstPtr,
}
Expand description

When adjusting a receiver we often want to do one of

  • Add a & (or &mut), converting the receiver from T to &T (or &mut T)
  • If the receiver has type *mut T, convert it to *const T

This type tells us which one to do.

Note that in principle we could do both at the same time. For example, when the receiver has type T, we could autoref it to &T, then convert to *const T. Or, when it has type *mut T, we could convert it to *const T, then autoref to &*const T. However, currently we do (at most) one of these. Either the receiver has type T and we convert it to &T (or with mut), or it has type *mut T and we convert it to *const T.

Variants

Autoref

Receiver has type T, add & or &mut (it T is mut), and maybe also “unsize” it. Unsizing is used to convert a [T; N] to [T], which only makes sense when autorefing.

Fields of Autoref

mutbl: Mutabilityunsize: Option<Ty<'tcx>>

Indicates that the source expression should be “unsized” to a target type. This should probably eventually go away in favor of just coercing method receivers.

ToConstPtr

Receiver has type *mut T, convert to *const T

Implementations

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

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

This method tests for !=.

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

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

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: 16 bytes

Size for each variant: