Struct AgentEntry 

pub struct AgentEntry {
    pub version: i64,
    pub floor: i64,
    pub shapes: Vec<AgentShape>,
    pub renamed_from: Vec<String>,
}

One agent class’s recorded state history (track §3.1).

version is the class’s current shape version: every accepted change bumps it, additive or not, so the S1 __v marker always names exactly one entry in shapes. floor is the oldest version any deployed instance may still hold; only a migration sweep (S4) raises it, and shapes keeps one snapshot per version from floor to version.

Fields

version: i64

floor: i64

shapes: Vec<AgentShape>

renamed_from: Vec<String>

State-migrations S3 (#2248, #2253 review): the old names this class was renamed from (agent New replaces Old), once a build moved their entries here. While the declaration stays in source, it tells an already-applied rename from a mistyped one. Additive and omitted when empty, so the lock format is unchanged for every class never renamed.

Implementations

impl AgentEntry

pub fn oldest_readable(&self) -> i64

The oldest stored version a build at this entry’s version can read forward without a migration step: the smallest m >= floor such that every snapshot after m, up to version, was an additive change (state-migrations S1, #2211 Decision B). A record at m or later loads by zero-merge (ADR 0124 D4); one below it has no path.

pub fn oldest_readable_to(&self, target: i64) -> i64

Self::oldest_readable measured against target instead of the current version: the oldest version whose path to target is entirely additive. A migrate from target step covers every version from there up to target (state-migrations S2, #2224 Decision C).

pub fn current(&self) -> Option<&AgentShape>

The snapshot at the entry’s current version.

pub fn shape(&self, version: i64) -> Option<&AgentShape>

The snapshot recorded at version, if the entry still holds it.

Trait Implementations

impl Clone for AgentEntry

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AgentEntry

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AgentEntry

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for AgentEntry

impl PartialEq for AgentEntry

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for AgentEntry

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AgentEntry