Method values

crates/stdlib/src/mmap.rs:363–381

(self, len: usize)

    impl FlushOptions {
        fn values(self, len: usize) -> Option<(usize, usize)> {
            let offset = match self.offset {
                Some(o) if o < 0 => return None,
                Some(o) => o as usize,
                None => 0,
            };

            let size = match self.size {
                Some(s) if s < 0 => return None,
                Some(s) => s as usize,
                None => len,
            };

            if len.checked_sub(offset)? < size {
                return None;
            }

            Some((offset, size))
        }
    }

    #[derive(FromArgs, Clone)]