pub fn build(&self) -> Result<Vec<Rule>, BuildRuleErrors> {
        // Order rules deterministically -- first order by name, then add custom rules.
        let mut unbuilt_named_rules: Vec<(&RuleName, &UnbuiltRule)> = self.rules.iter().collect();
        unbuilt_named_rules.sort_by(|&(a, _), &(b, _)| a.cmp(b));
        let all_rules: Vec<_> = unbuilt_named_rules
            .into_iter()
            .map(|(rn, rule)| (Some(rn), rule))
            .chain(self.custom_rules.iter().map(|r| (None, r)))
            .collect();

        let num_rules = all_rules.iter().clone().fold(0, |sum, (_, ur)| match ur {
            // Building a string rule actually generates two versions:
            // 1. The "raw" form of the string rule
            // 2. A version of the (1) boostrapped with a set of rules, possibly including (1)
            //    itself.
            UnbuiltRule::S(_) => sum + 2,
            UnbuiltRule::M(v) => sum + 2 * v.len(),
            _ => sum + 1,
        });

        let mut built_rules = Vec::with_capacity(num_rules);
        let mut errors: Vec<Box<dyn Error>> = Vec::new();
        let bootstrapping_rules = Self::get_bootstrapping_rules();
        let bootstrap_blacklist = Self::get_boostrap_blacklist();
        let mut mk_str_rule =
            |built_rules: &mut Vec<Rule>, rule_name: Option<&RuleName>, rule: &'static str| {
                let pm = PatternMap::from_str(rule);
                if let Err(err) = pm.validate() {
                    errors.push(err.into());
                    return;
                }

                if !bootstrap_blacklist.contains(&rule_name.copied()) {
                    let bootstrapped_pm = pm.bootstrap(&bootstrapping_rules);
                    built_rules.push(Rule::PatternMap(bootstrapped_pm));
                }
                built_rules.push(Rule::PatternMap(pm));
            };

        for (rule_name, unbuilt_rule) in all_rules.into_iter() {
            match unbuilt_rule {
                UnbuiltRule::S(rule) => mk_str_rule(&mut built_rules, rule_name, rule),
                UnbuiltRule::M(rules) => {
                    for rule in rules.iter() {
                        mk_str_rule(&mut built_rules, rule_name, rule);
                    }
                }
                UnbuiltRule::F(f) => built_rules.push(Rule::from_fn(*f)),
            }
        }

        if !errors.is_empty() {
            return Err(BuildRuleErrors { errors });
        }

        Ok(built_rules)
    }
/// Creates a list of `Rules`s from the unbuilt rule set.
Creates a list of `Rules`s from the unbuilt rule set.
Creates a list of ` Rules ` s from the unbuilt rule set .
pub fn build(&self) -> Result<Vec<Rule>, BuildRuleErrors> {
        // Order rules deterministically -- first order by name, then add custom rules.
        let mut unbuilt_named_rules: Vec<(&RuleName, &UnbuiltRule)> = self.rules.iter().collect();
        unbuilt_named_rules.sort_by(|&(a, _), &(b, _)| a.cmp(b));
        let all_rules: Vec<_> = unbuilt_named_rules
            .into_iter()
            .map(|(rn, rule)| (Some(rn), rule))
            .chain(self.custom_rules.iter().map(|r| (None, r)))
            .collect();
        let num_rules = all_rules.iter().clone().fold(0, |sum, (_, ur)| match ur {
            // Building a string rule actually generates two versions:
            // 1. The "raw" form of the string rule
            // 2. A version of the (1) boostrapped with a set of rules, possibly including (1)
            //    itself.
            UnbuiltRule::S(_) => sum + 2,
            UnbuiltRule::M(v) => sum + 2 * v.len(),
            _ => sum + 1,
        });
        let mut built_rules = Vec::with_capacity(num_rules);
        let mut errors: Vec<Box<dyn Error>> = Vec::new();
        let bootstrapping_rules = Self::get_bootstrapping_rules();
        let bootstrap_blacklist = Self::get_boostrap_blacklist();
        let mut mk_str_rule =
            |built_rules: &mut Vec<Rule>, rule_name: Option<&RuleName>, rule: &'static str| {
                let pm = PatternMap::from_str(rule);
                if let Err(err) = pm.validate() {
                    errors.push(err.into());
                    return;
                }
                if !bootstrap_blacklist.contains(&rule_name.copied()) {
                    let bootstrapped_pm = pm.bootstrap(&bootstrapping_rules);
                    built_rules.push(Rule::PatternMap(bootstrapped_pm));
                }
                built_rules.push(Rule::PatternMap(pm));
            };
        for (rule_name, unbuilt_rule) in all_rules.into_iter() {
            match unbuilt_rule {
                UnbuiltRule::S(rule) => mk_str_rule(&mut built_rules, rule_name, rule),
                UnbuiltRule::M(rules) => {
                    for rule in rules.iter() {
                        mk_str_rule(&mut built_rules, rule_name, rule);
                    }
                }
                UnbuiltRule::F(f) => built_rules.push(Rule::from_fn(*f)),
            }
        }
        if !errors.is_empty() {
            return Err(BuildRuleErrors { errors });
        }
        Ok(built_rules)
    }
pub fn build ( & self ) -> Result < Vec < Rule > , BuildRuleErrors > { // Order rules deterministically -- first order by name, then add custom rules. let mut unbuilt_named_rules : Vec < ( & RuleName , & UnbuiltRule ) > = self . rules . iter ( ) . collect ( ) ; unbuilt_named_rules . sort_by ( | & ( a , _ ) , & ( b , _ ) | a . cmp ( b ) ) ; let all_rules : Vec < _ > = unbuilt_named_rules . into_iter ( ) . map ( | ( rn , rule ) | ( Some ( rn ) , rule ) ) . chain ( self . custom_rules . iter ( ) . map ( | r | ( None , r ) ) ) . collect ( ) ; let num_rules = all_rules . iter ( ) . clone ( ) . fold ( 0 , | sum , ( _ , ur ) | match ur { // Building a string rule actually generates two versions: // 1. The "raw" form of the string rule // 2. A version of the (1) boostrapped with a set of rules, possibly including (1) //    itself. UnbuiltRule :: S ( _ ) => sum + 2 , UnbuiltRule :: M ( v ) => sum + 2 * v . len ( ) , _ => sum + 1 , } ) ; let mut built_rules = Vec :: with_capacity ( num_rules ) ; let mut errors : Vec < Box < dyn Error > > = Vec :: new ( ) ; let bootstrapping_rules = Self :: get_bootstrapping_rules ( ) ; let bootstrap_blacklist = Self :: get_boostrap_blacklist ( ) ; let mut mk_str_rule = | built_rules : & mut Vec < Rule > , rule_name : Option < & RuleName > , rule : & ' static str | { let pm = PatternMap :: from_str ( rule ) ; if let Err ( err ) = pm . validate ( ) { errors . push ( err . into ( ) ) ; return ; } if ! bootstrap_blacklist . contains ( & rule_name . copied ( ) ) { let bootstrapped_pm = pm . bootstrap ( & bootstrapping_rules ) ; built_rules . push ( Rule :: PatternMap ( bootstrapped_pm ) ) ; } built_rules . push ( Rule :: PatternMap ( pm ) ) ; } ; for ( rule_name , unbuilt_rule ) in all_rules . into_iter ( ) { match unbuilt_rule { UnbuiltRule :: S ( rule ) => mk_str_rule ( & mut built_rules , rule_name , rule ) , UnbuiltRule :: M ( rules ) => { for rule in rules . iter ( ) { mk_str_rule ( & mut built_rules , rule_name , rule ) ; } } UnbuiltRule :: F ( f ) => built_rules . push ( Rule :: from_fn ( * f ) ) , } } if ! errors . is_empty ( ) { return Err ( BuildRuleErrors { errors } ) ; } Ok ( built_rules ) }
Creates a list of `Rules`s from the unbuilt rule set.
Creates a list of ` Rules ` s from the unbuilt rule set .
&self
&self