reedline/validator/
default.rs

1use crate::{ValidationResult, Validator};
2
3/// A default validator which checks for mismatched quotes and brackets
4pub struct DefaultValidator;
5
6impl Validator for DefaultValidator {
7    fn validate(&self, line: &str) -> ValidationResult {
8        if line.split('"').count() % 2 == 0 || incomplete_brackets(line) {
9            ValidationResult::Incomplete
10        } else {
11            ValidationResult::Complete
12        }
13    }
14}
15
16fn incomplete_brackets(line: &str) -> bool {
17    let mut balance: Vec<char> = Vec::new();
18
19    for c in line.chars() {
20        if c == '{' {
21            balance.push('}');
22        } else if c == '[' {
23            balance.push(']');
24        } else if c == '(' {
25            balance.push(')');
26        } else if ['}', ']', ')'].contains(&c) {
27            if let Some(last) = balance.last() {
28                if last == &c {
29                    balance.pop();
30                }
31            }
32        }
33    }
34
35    !balance.is_empty()
36}
37
38#[cfg(test)]
39mod test {
40    use super::*;
41    use rstest::rstest;
42
43    #[rstest]
44    #[case("(([[]]))", false)]
45    #[case("(([[]]", true)]
46    #[case("{[}]", true)]
47    #[case("{[]}{()}", false)]
48    fn test_incomplete_brackets(#[case] input: &str, #[case] expected: bool) {
49        let result = incomplete_brackets(input);
50
51        assert_eq!(result, expected);
52    }
53}
reedline/validator/default.rs

reedline/validator/
default.rs
