Enum RouteReason 

pub enum RouteReason {
    CheapRegular,
    DynamicReference,
    EvaluationAnnotations,
    OpenObject,
    UserPattern,
    ShuffleCost,
    ProductCost,
    RepetitionCost,
    AutomatonMemory,
    StructuredOnlySemantics,
}

Stable primary reason for a node’s selected route.

Variants

CheapRegular

The bounded regular estimate is below all construction limits.

DynamicReference

Static or dynamic reference scope requires structured execution.

EvaluationAnnotations

Evaluation annotations must be preserved across applicators.

OpenObject

Open-object matching needs decoded-key structured semantics.

UserPattern

A user pattern runs over decoded Unicode scalar values.

ShuffleCost

The conservative shuffle estimate exceeds a regular construction budget.

ProductCost

The conservative product estimate exceeds a regular construction budget.

RepetitionCost

A repetition estimate exceeds a regular construction budget.

AutomatonMemory

Estimated retained or peak automaton memory exceeds its budget.

StructuredOnlySemantics

The keyword’s semantics are implemented only by the structured engine.

Trait Implementations

impl Clone for RouteReason

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RouteReason

impl Debug for RouteReason

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

Formats the value using the given formatter.

impl Eq for RouteReason

impl Hash for RouteReason

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for RouteReason

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RouteReason