Enum EnumRepr 

#[repr(C)]
pub enum EnumRepr {
    RustNPO = 0,
    U8 = 1,
    U16 = 2,
    U32 = 3,
    U64 = 4,
    USize = 5,
    I8 = 6,
    I16 = 7,
    I32 = 8,
    I64 = 9,
    ISize = 10,
}

All possible representations for Rust enums — ie. the type/size of the discriminant

Variants

RustNPO = 0

Special-case representation discriminated by zeros under non-nullable pointer

See: https://rust-lang.github.io/unsafe-code-guidelines/layout/enums.html#discriminant-elision-on-option-like-enums

U8 = 1

u8 representation (#[repr(u8)])

U16 = 2

u16 representation (#[repr(u16)])

U32 = 3

u32 representation (#[repr(u32)])

U64 = 4

u64 representation (#[repr(u64)])

USize = 5

usize representation (#[repr(usize)])

I8 = 6

i8 representation (#[repr(i8)])

I16 = 7

i16 representation (#[repr(i16)])

I32 = 8

i32 representation (#[repr(i32)])

I64 = 9

i64 representation (#[repr(i64)])

ISize = 10

isize representation (#[repr(isize)])

Implementations

impl EnumRepr

pub const fn from_discriminant_size<T>() -> Self

Returns the enum representation for the given discriminant type

NOTE: only supports unsigned discriminants

Panics

Panics if the size of the discriminant size is not 1, 2, 4, or 8 bytes.

Trait Implementations

impl Clone for EnumRepr

fn clone(&self) -> EnumRepr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EnumRepr

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

Formats the value using the given formatter.

impl Hash for EnumRepr

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for EnumRepr

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for EnumRepr

impl Eq for EnumRepr

impl StructuralPartialEq for EnumRepr