Enum RuleEvalMode 

pub enum RuleEvalMode {
    Seminaive,
    Naive,
    UnsafeSeminaive,
}

How a rule is evaluated. The three modes are mutually exclusive, so they share one field on GenericRule.

Variants

Seminaive

Default: seminaive (delta) evaluation with restrictive Pure/Write primitive contexts (no database reads in the RHS).

Naive

:naive: match the whole database every iteration, with permissive Read/Full contexts so the RHS may read the database.

UnsafeSeminaive

:unsafe-seminaive: like :naive’s Read/Full contexts (the RHS may read the database) but keeps delta evaluation. Unsafe: an RHS read observes the database mid-iteration and isn’t re-evaluated if it changes.

Implementations

impl RuleEvalMode

pub fn is_naive(self) -> bool

:naive — disables seminaive evaluation (unlike :unsafe-seminaive).

Trait Implementations

impl Clone for RuleEvalMode

fn clone(&self) -> RuleEvalMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RuleEvalMode

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

Formats the value using the given formatter.

impl Default for RuleEvalMode

fn default() -> RuleEvalMode

Returns the “default value” for a type.

impl Hash for RuleEvalMode

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 RuleEvalMode

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

impl Eq for RuleEvalMode

impl StructuralPartialEq for RuleEvalMode