Trait cfg::history::EliminateNulling

pub trait EliminateNulling {
    fn eliminate_nulling<R>(&self, rule: &R, which: BinarizedRhsSubset) -> Self
    where
        R: GrammarRule;
}

Trait for history types that allow the rule to have nulling symbols eliminated from the RHS.

Required methods

fn eliminate_nulling<R>(&self, rule: &R, which: BinarizedRhsSubset) -> Self where
    R: GrammarRule, 

Returns a history. May record the elimination.

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Implementors

impl EliminateNulling for History

fn eliminate_nulling<R>(&self, rule: &R, subset: BinarizedRhsSubset) -> Self where
    R: GrammarRule, 

impl EliminateNulling for NullHistory

fn eliminate_nulling<R>(&self, _rule: &R, _which: BinarizedRhsSubset) -> Self

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