use std::rc::Rc; #[derive(Debug, PartialEq, Clone)] pub struct BinOp { pub sigil: Rc } #[derive(Debug, PartialEq, Clone)] pub struct PrefixOp { pub sigil: Rc } impl BinOp { pub fn from_sigil(sigil: Rc) -> BinOp { BinOp { sigil } } pub fn min_precedence() -> i32 { i32::min_value() } pub fn get_precedence(op: &str) -> i32 { match op { "+" | "-" => 10, "*" | "/" | "%" => 20, _ => 30, } } } impl PrefixOp { pub fn from_sigil(sigil: Rc) -> PrefixOp { PrefixOp { sigil } } pub fn is_prefix(op: &str) -> bool { match op { "+" | "-" | "!" | "~" => true, _ => false, } } }