Enum ReasonCode 

#[repr(u8)]
pub enum ReasonCode {
    Admissible = 0,
    BoundaryApproach = 1,
    SustainedOutwardDrift = 2,
    AbruptSlewViolation = 3,
    RecurrentBoundaryGrazing = 4,
    EnvelopeViolation = 5,
    DriftWithRecovery = 6,
    SingleCrossing = 7,
}

Reason codes attached to a grammar transition. Carried into the Episode so an operator audit can see why the grammar flagged a cell, not just that it did.

Variants

Admissible = 0

Sentinel: no reason because the cell is admissible.

BoundaryApproach = 1

Boundary entered because residual or drift is elevated.

SustainedOutwardDrift = 2

Drift sustained above the violation threshold for several windows.

AbruptSlewViolation = 3

Single-window slew shock.

RecurrentBoundaryGrazing = 4

Multiple boundary cells with no clear violation — graze.

EnvelopeViolation = 5

Envelope-magnitude violation (norm itself crossed the high band).

DriftWithRecovery = 6

Drift descending after a peak — recovery edge.

SingleCrossing = 7

One-shot boundary crossing that did not re-enter on the next cell.

Implementations

impl ReasonCode

pub const fn severity(self) -> u8

Severity rank used for deterministic tie-break when several reasons coexist. Higher = more severe.

Trait Implementations

impl Clone for ReasonCode

fn clone(&self) -> ReasonCode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReasonCode

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

Formats the value using the given formatter.

impl Default for ReasonCode

fn default() -> ReasonCode

Returns the “default value” for a type.

impl PartialEq for ReasonCode

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

impl Eq for ReasonCode

impl StructuralPartialEq for ReasonCode