fn try_update()

in aws-lc-rs/src/digest.rs [105:127]

• 18 lines of code
• 4 McCabe index (conditional complexity)

    fn try_update(&mut self, data: &[u8]) -> Result<(), Unspecified> {
        unsafe {
            // Check if the message has reached the algorithm's maximum allowed input, or overflowed
            // the msg_len counter.
            let (msg_len, overflowed) = self.msg_len.overflowing_add(data.len() as u64);
            if overflowed || msg_len > self.algorithm.max_input_len {
                return Err(Unspecified);
            }

            self.msg_len = msg_len;
            self.max_input_reached = self.msg_len == self.algorithm.max_input_len;

            // Doesn't require boundary_check! guard
            if 1 != EVP_DigestUpdate(
                self.digest_ctx.as_mut_ptr(),
                data.as_ptr().cast(),
                data.len(),
            ) {
                return Err(Unspecified);
            }
            Ok(())
        }
    }