Enum Alignment 

#[non_exhaustive]
pub enum Alignment {
    BYTE,
    U16,
    U32,
    U64,
}

The alignment of a D-Bus type, as a runtime value.

D-Bus values are padded to the alignment of their type, which for the static writers in this crate is derived from a ty::Marker. Code which works with types that are only known at runtime needs to pass it explicitly instead.

Examples

use tokio_dbus::{ty, Alignment};

assert_eq!(Alignment::of::<u8>(), Alignment::BYTE);
assert_eq!(Alignment::of::<ty::Str>(), Alignment::U32);
assert_eq!(Alignment::of::<(u8, u8)>(), Alignment::U64);

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

BYTE

Alignment of one byte, used by y, g and v.

U16

Alignment of two bytes, used by n and q.

U32

Alignment of four bytes, used by b, i, u, h, s, o and by the length prefix of an array.

U64

Alignment of eight bytes, used by x, t, d, structs and dict entries.

Implementations

impl Alignment

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

where T: Aligned,

The alignment of the type described by the ty::Marker T.

Examples

use tokio_dbus::{ty, Alignment};

assert_eq!(Alignment::of::<u64>(), Alignment::U64);
assert_eq!(Alignment::of::<ty::Variant>(), Alignment::BYTE);

pub const fn in_bytes(self) -> usize

The alignment as a number of bytes, which is always a power of two.

Examples

use tokio_dbus::Alignment;

assert_eq!(Alignment::BYTE.in_bytes(), 1);
assert_eq!(Alignment::U64.in_bytes(), 8);

Trait Implementations

impl Clone for Alignment

fn clone(&self) -> Alignment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Alignment

impl Debug for Alignment

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

Formats the value using the given formatter.

impl Eq for Alignment

impl Hash for Alignment

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 Ord for Alignment

fn cmp(&self, other: &Alignment) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Alignment

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Alignment

fn partial_cmp(&self, other: &Alignment) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Alignment