zino_core/validation/validator/
uppercase.rs

1use super::Validator;
2use crate::{bail, error::Error};
3
4/// A validator for uppercase characters.
5#[derive(Debug, Clone, Copy, PartialEq, Eq)]
6pub struct UppercaseValidator;
7
8impl Validator<str> for UppercaseValidator {
9    type Error = Error;
10
11    #[inline]
12    fn validate(&self, data: &str) -> Result<(), Self::Error> {
13        for (index, ch) in data.char_indices() {
14            if !ch.is_uppercase() {
15                bail!("char `{}` at the index `{}` is not uppercase", ch, index);
16            }
17        }
18        Ok(())
19    }
20}