Struct CrankMarker 

pub struct CrankMarker {
    pub handler_name: &'static str,
    pub seed_hints: &'static [(&'static str, &'static [&'static [u8]])],
}

Compile-time descriptor for a crank handler.

seed_hints is a slice of (account_field_name, seed_bytes_list) tuples. Each entry says: “the account field named X on this crank’s context can be derived from these seeds under the program’s id”. The crank runner calls find_program_address with the seeds and fills the account slot automatically.

Fields

handler_name: &'static str

The handler function name, same as stringify!(fn_name).

seed_hints: &'static [(&'static str, &'static [&'static [u8]])]

Per-account seed hints. Each tuple is (field_name, &[seed_0, seed_1, ...]).

Implementations

impl CrankMarker

pub const fn seed_count(&self) -> usize

Number of declared seed hints.

pub fn seeds_for(&self, field: &str) -> Option<&'static [&'static [u8]]>

Lookup a single field’s seed list by name. Returns None when the field has no declared hint (the runner then falls back to --account supplied at the CLI).

Trait Implementations

impl Clone for CrankMarker

fn clone(&self) -> CrankMarker

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CrankMarker

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

Formats the value using the given formatter.

impl Copy for CrankMarker