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#[derive(Debug)]
pub struct Operation {
pub m1: String,
pub m2: String,
pub op: char
}
#[derive(Debug)]
pub enum MonkeyType {
Num(i64),
Op(Operation)
}
#[derive(Debug)]
pub struct Monkey {
pub name: String,
pub kind: MonkeyType
}
pub fn read_monkeys_from_stdin() -> Vec<Monkey> {
let mut v = vec![];
let mut line = String::new();
while std::io::stdin().read_line(&mut line).unwrap() > 0 {
let name = String::from(&line[0..4]);
let monkey = match line.chars().nth(6).unwrap() {
'0'..='9' => {
let n = line[6..line.len()-1].parse::<i64>().unwrap();
Monkey { name, kind: MonkeyType::Num(n) }
},
_ => {
let m1 = String::from(&line[6..10]);
let m2 = String::from(&line[13..17]);
let op = Operation { m1, m2, op: line.chars().nth(11).unwrap() };
Monkey { name, kind: MonkeyType::Op(op) }
}
};
v.push(monkey);
line.clear();
}
v
}
pub fn apply_op(n1: i64, n2: i64, op: &Operation) -> i64 {
match op.op {
'+' => n1 + n2,
'-' => n1 - n2,
'*' => n1 * n2,
'/' => n1 / n2,
_ => panic!("invalid operator")
}
}
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