Enum rustc_hir_typeck::method::probe::AutorefOrPtrAdjustment

pub enum AutorefOrPtrAdjustment {
    Autoref {
        mutbl: Mutability,
        unsize: bool,
    },
    ToConstPtr,
}

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

Fields

mutbl: Mutability

unsize: bool

Indicates that the source expression should be “unsized” to a target type. This is special-cased for just arrays unsizing to slices.

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.

ToConstPtr

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

Implementations

impl AutorefOrPtrAdjustment

fn get_unsize(&self) -> bool

Trait Implementations

impl Clone for AutorefOrPtrAdjustment

fn clone(&self) -> AutorefOrPtrAdjustment

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AutorefOrPtrAdjustment

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq<AutorefOrPtrAdjustment> for AutorefOrPtrAdjustment

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

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

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.

impl Copy for AutorefOrPtrAdjustment

impl StructuralPartialEq for AutorefOrPtrAdjustment

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:

• Autoref: 2 bytes
• ToConstPtr: 0 bytes