Struct ForeignManifest 

pub struct ForeignManifest {
    pub program_id: Address,
    pub expected_disc: u8,
    pub expected_wire_fp: u64,
    pub supported_epochs: RangeInclusive<u32>,
}

Opaque witness to a foreign program’s layout ABI.

Callers construct this once per foreign program they want to read from, typically as a const from build-time-embedded metadata or from the foreign program’s Hopper manifest account.

Fields

program_id: Address

Owner program that authored the layout. The account’s owner must match this address exactly.

expected_disc: u8

Discriminator byte the foreign layout expects.

expected_wire_fp: u64

Canonical wire-fingerprint hash from the foreign program’s schema manifest. Matches AccountLayout::WIRE_FINGERPRINT on the reader side.

supported_epochs: RangeInclusive<u32>

Inclusive range of schema_epoch values the reader supports. Accounts outside this range fail verification. the caller can then fall back to a migration path or a different manifest.

Implementations

impl ForeignManifest

pub const fn single_epoch( program_id: Address, expected_disc: u8, expected_wire_fp: u64, epoch: u32, ) -> Self

Build a single-epoch manifest covering expected_wire_fp for program_id at exactly the given schema epoch.

Trait Implementations

impl Clone for ForeignManifest

fn clone(&self) -> ForeignManifest

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ForeignManifest

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

Formats the value using the given formatter.

impl PartialEq for ForeignManifest

fn eq(&self, other: &ForeignManifest) -> 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 Eq for ForeignManifest

impl StructuralPartialEq for ForeignManifest