Trait cfg::history::AssignPrecedence

pub trait AssignPrecedence {
    fn assign_precedence<R>(&self, rule: &R, looseness: u32) -> Self
    where
        R: GrammarRule;
}

Trait for history types that allow the rule to have its precedence assigned.

Required methods

fn assign_precedence<R>(&self, rule: &R, looseness: u32) -> Self where
    R: GrammarRule, 

Returns a history. May record the precedence.

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Implementors

impl AssignPrecedence for NullHistory

fn assign_precedence<R>(&self, _rule: &R, _looseness: u32) -> Self

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