Struct XabiOption 

#[repr(C)]
pub struct XabiOption {
    pub size: usize,
    pub abi_version: u32,
    pub is_some: u8,
    pub payload: XabiOwnedBytes,
}

Optional xabi payload.

is_some distinguishes None from Some(T) even when T encodes to an empty payload, such as an empty string or empty byte vector.

Fields

size: usize

Size of this structure in bytes.

abi_version: u32

ABI version for this structure.

is_some: u8

1 when payload contains an encoded value, 0 for None.

payload: XabiOwnedBytes

Owned encoded payload for the contained value.

Implementations

impl XabiOption

pub const ABI_VERSION: u32 = ABI_VERSION

ABI version expected by this structure.

pub const MIN_SIZE: usize

Minimum required size for the current option representation.

pub const FULL_SIZE: usize

Full size of this option representation.

pub fn none() -> Self

Create a None wire value.

pub fn some(payload: XabiOwnedBytes) -> Self

Create a Some wire value from an encoded payload.

pub fn validate(&self) -> Result<()>

Validate the option layout and discriminant.

Trait Implementations

impl Clone for XabiOption

fn clone(&self) -> XabiOption

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for XabiOption