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use std::ops::Add;
use super::super::types::Type;
use super::super::types::Type::*;
use super::super::types::Number;
impl Add for Type {
type Output = Result<Type, String>;
fn add(self, other: Type) -> Result<Type, String> {
match (self, other) {
(Bool(_), _) | (_, Bool(_)) |
(Str(_), _) | (_, Str(_)) |
(Operator(_), _) | (_, Operator(_)) => {
Err("Cannot add these types".to_string())
},
(Number(Number::Int(i)), Number(Number::Float(f))) |
(Number(Number::Float(f)), Number(Number::Int(i))) => {
Ok(Number(Number::Float(f + i as f32)))
},
(Number(Number::Int(a)), Number(Number::Int(b))) => {
Ok(Number(Number::Int(a + b)))
},
(Number(Number::Float(a)), Number(Number::Float(b))) => {
Ok(Number(Number::Float(a + b)))
},
(Symbol(_), Number(_)) |
(Number(_), Symbol(_)) |
(Symbol(_), Symbol(_)) => Err("Not yet implemented".to_string())
}
}
}
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