Method write_all

crates/tinywasm/src/store/memory/mod.rs:55–71

Writes all bytes in `src` starting at `addr`, or returns `None` if any byte could not be written.

(&mut self, addr: usize, src: &[u8])

    /// Writes all bytes in `src` starting at `addr`, or returns `None` if any byte could not be written.
    fn write_all(&mut self, addr: usize, src: &[u8]) -> Option<()> {
        let end = addr.checked_add(src.len())?;
        if end > self.len() {
            return None;
        }

        let mut offset = 0;
        while offset < src.len() {
            let written = self.write(addr + offset, &src[offset..]);
            if written == 0 {
                return None;
            }
            offset += written;
        }

        Some(())
    }

    /// Fills the range `[addr, addr + len)` with `val`.
    fn fill(&mut self, addr: usize, len: usize, val: u8) -> Option<()> {