fn istitle()

in starlark/src/stdlib/string.rs [571:593]

• 22 lines of code
• 9 McCabe index (conditional complexity)

    fn istitle(this: &str) -> anyhow::Result<bool> {
        let mut last_space = true;
        let mut result = false;

        for c in this.chars() {
            if !c.is_alphabetic() {
                last_space = true;
            } else {
                if last_space {
                    if c.is_lowercase() {
                        return Ok(false);
                    }
                } else if c.is_uppercase() {
                    return Ok(false);
                }
                if c.is_alphabetic() {
                    result = true;
                }
                last_space = false;
            }
        }
        Ok(result)
    }