clc_core/
errors.rs

1use std::borrow::Cow;
2use std::fmt;
3use std::fmt::Formatter;
4
5#[derive(Debug, PartialEq)]
6pub enum Error {
7    InvalidInput(String),
8    Eval(EvalError),
9}
10
11impl fmt::Display for Error {
12    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
13        use Error::*;
14        match self {
15            InvalidInput(msg) => write!(f, "invalid input: {}", msg),
16            Eval(err) => write!(f, "{}", err),
17        }
18    }
19}
20
21impl std::error::Error for Error {}
22
23#[derive(Debug)]
24pub(crate) struct InvalidOperatorError<'a> {
25    raw: Cow<'a, str>,
26}
27
28impl<'a> InvalidOperatorError<'a> {
29    pub(crate) fn new(op: impl Into<Cow<'a, str>>) -> Self {
30        InvalidOperatorError { raw: op.into() }
31    }
32}
33
34impl<'a> fmt::Display for InvalidOperatorError<'a> {
35    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
36        write!(
37            f,
38            "invalid operator '{}' currently ['+', '-', '*', '/'] supported",
39            self.raw
40        )
41    }
42}
43
44impl<'a> std::error::Error for InvalidOperatorError<'a> {}
45
46#[derive(Debug, PartialEq)]
47pub enum EvalError {
48    ZeroDivision,
49}
50
51impl fmt::Display for EvalError {
52    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
53        use EvalError::*;
54        match self {
55            ZeroDivision => write!(f, "divided by zero"),
56        }
57    }
58}
59
60impl std::error::Error for EvalError {}
clc_core/errors.rs

clc_core/
errors.rs
