Struct programinduction::pcfg::Rule

pub struct Rule {
    pub name: &'static str,
    pub production: Type,
    pub logprob: f64,
}

A PCFG rule specifies a production that can happen for a particular nonterminal.

A rule associates a production name with a production type. Rules that are not arrows are terminals for the supplied nonterminal type. Rules that are arrows expand nonterminals that correspond to the arrow's return type.

Log-probabilities are normalized when initializing a Grammar.

Fields

name: &'static str

production: Type

logprob: f64

Methods

impl Rule

pub fn new(name: &'static str, production: Type, logprob: f64) -> Self

Trait Implementations

impl Debug for Rule

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

Formats the value using the given formatter.

impl Clone for Rule

fn clone(&self) -> Rule

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Ord for Rule

fn cmp(&self, other: &Rule) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl PartialOrd for Rule

fn partial_cmp(&self, other: &Rule) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl PartialEq for Rule

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Eq for Rule