Method istitle

crates/vm/src/bytes_inner.rs:366–396

(&self)

    }

    pub fn istitle(&self) -> bool {
        if self.elements.is_empty() {
            return false;
        }

        let mut iter = self.elements.iter().peekable();
        let mut prev_cased = false;

        while let Some(c) = iter.next() {
            let current = char::from(*c);
            let next = if let Some(k) = iter.peek() {
                char::from(**k)
            } else if current.is_uppercase() {
                return !prev_cased;
            } else {
                return prev_cased;
            };

            let is_cased = current.to_uppercase().next().unwrap() != current
                || current.to_lowercase().next().unwrap() != current;
            if (is_cased && next.is_uppercase() && !prev_cased)
                || (!is_cased && next.is_lowercase())
            {
                return false;
            }

            prev_cased = is_cased;
        }

        true
    }

    pub fn lower(&self) -> Vec<u8> {
        self.elements.to_ascii_lowercase()