Struct IndexCache 

pub struct IndexCache { /* private fields */ }

Per-line cache of the newest index this machine has accepted — what clause 2 compares a presented index against.

Local, unsigned state, exactly like HighWaterMarks: it is written only after an index has verified against the realm’s root, and it is read back unverified. The failure it can produce is REFUSING an install, never accepting a bad one — an attacker who can already write here can delete the core instead.

Implementations

impl IndexCache

pub fn at_root(root: &Path) -> Self

pub fn load(&self, line: &str) -> Result<Option<LineIndex>, IndexError>

The index cached for a line, if one has ever been accepted.

pub fn update( &self, line: &str, envelope: &[u8], parsed: &LineIndex, ) -> Result<(), IndexError>

Record a VERIFIED envelope, refusing a counter regression — the same rule check applies, held here too so a caller that skipped the check cannot quietly lower the cached mark.

Trait Implementations

impl Debug for IndexCache

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

Formats the value using the given formatter.