Struct LayoutFingerprint 

pub struct LayoutFingerprint {
    pub wire_hash: [u8; 8],
    pub semantic_hash: [u8; 8],
}

Extended layout fingerprint combining wire-level and semantic identity.

The wire hash matches the 8-byte layout_id stored in the account header and captures the raw byte layout (field sizes, offsets, types).

The semantic hash additionally folds in field intents, enabling detection of semantic changes that don’t alter the wire format (e.g. reinterpreting a u64 from Balance to Timestamp).

Fields

wire_hash: [u8; 8]

Wire-layout hash (matches the header layout_id).

semantic_hash: [u8; 8]

Semantic hash incorporating field intents, names, and roles.

Implementations

impl LayoutFingerprint

pub const fn from_manifest(manifest: &LayoutManifest) -> Self

Compute a fingerprint from a layout manifest.

wire_hash is taken directly from manifest.layout_id. semantic_hash is a deterministic FNV-1a-64 over field names, types, sizes, offsets, and intents.

pub const fn is_identical(&self, other: &Self) -> bool

Whether both wire and semantic fingerprints match.

pub const fn wire_matches_but_semantics_differ(&self, other: &Self) -> bool

Whether wire layout matches but semantics differ.

This detects reinterpretation: same bytes on the wire, different meaning.

Trait Implementations

impl Clone for LayoutFingerprint

fn clone(&self) -> LayoutFingerprint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LayoutFingerprint

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

Formats the value using the given formatter.

impl Display for LayoutFingerprint

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

Formats the value using the given formatter.

impl PartialEq for LayoutFingerprint

fn eq(&self, other: &LayoutFingerprint) -> 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 LayoutFingerprint

impl Eq for LayoutFingerprint

impl StructuralPartialEq for LayoutFingerprint