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.

Implementors

• impl AssignPrecedence for NullHistory