Struct PromotionRule 

pub struct PromotionRule {
    pub from_domain: Symbol,
    pub to_domain: Symbol,
    pub cost: u16,
    pub convert: fn(&mut Cx, NumberLiteral) -> Result<NumberLiteral>,
}

A literal-level conversion edge from one number domain to another.

Fields

from_domain: Symbol

Domain the rule converts from.

to_domain: Symbol

Domain the rule converts to.

cost: u16

Relative cost, used to rank competing promotion paths.

convert: fn(&mut Cx, NumberLiteral) -> Result<NumberLiteral>

Converts a literal in from_domain to one in to_domain.

Trait Implementations

impl Clone for PromotionRule

fn clone(&self) -> PromotionRule

Returns a duplicate of the value.

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

Performs copy-assignment from source.