Struct Rule

pub struct Rule<'a> {
    pub name: &'a str,
    pub application: fn(_: &Expression, _: &Model) -> Result<Reduction, ApplicationError>,
    pub rule_sets: &'a [(&'a str, u16)],
}

A rule with a name, application function, and rule sets.

Fields

• name The name of the rule.
• application The function to apply the rule.
• rule_sets A list of rule set names and priorities that this rule is a part of. This is used to populate rulesets at runtime.

Fields

name: &'a str

application: fn(_: &Expression, _: &Model) -> Result<Reduction, ApplicationError>

rule_sets: &'a [(&'a str, u16)]

Implementations

impl<'a> Rule<'a>

pub const fn new( name: &'a str, application: fn(_: &Expression, _: &Model) -> Result<Reduction, ApplicationError>, rule_sets: &'a [(&'static str, u16)], ) -> Rule<'a>

pub fn apply( &self, expr: &Expression, mdl: &Model, ) -> Result<Reduction, ApplicationError>

Trait Implementations

impl<'a> Clone for Rule<'a>

fn clone(&self) -> Rule<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Rule<'a>

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

Formats the value using the given formatter.

impl Display for Rule<'_>

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

Formats the value using the given formatter.

impl Hash for Rule<'_>

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

where H: Hasher,

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 Rule<'_>

fn eq(&self, other: &Rule<'_>) -> 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 Eq for Rule<'_>