Trait validus::vstr::StrExt

source ·

pub trait StrExt<'a> {
    // Required methods
    fn validate<Rule: ValidateString>(
        self
    ) -> Result<&'a VStr<Rule>, Rule::Error>;
    fn assume_valid<Rule: ValidateString>(self) -> &'a VStr<Rule>;
    fn validate_or_panic<Rule: ValidateString>(self) -> &'a VStr<Rule>
       where Rule::Error: Debug;
}

Expand description

Call .validate() on any str-slice to validate it.

Example

use validus::vstr::{vstr, ValidateString, StrExt};

struct MyRule;

impl ValidateString for MyRule {
    type Error = &'static str;

    fn validate_str(s: &str) -> Result<(), Self::Error> {
        if s.len() > 5 {
            Ok(())
        } else {
            Err("string is too short")
        }
    }
}

// `StrExt` allows you to call `.validate` on any `str`-slice.
let vv: &vstr<MyRule> = "hello world".validate::<MyRule>().unwrap();
assert_eq!(vv, "hello world");