pub struct MyStream;

impl<'sval> sval::Stream<'sval> for MyStream {
    fn null(&mut self) -> sval::Result {
        print!("null");
        Ok(())
    }

    fn bool(&mut self, v: bool) -> sval::Result {
        print!("{}", v);
        Ok(())
    }

    fn i64(&mut self, v: i64) -> sval::Result {
        print!("{}", v);
        Ok(())
    }

    fn f64(&mut self, v: f64) -> sval::Result {
        print!("{}", v);
        Ok(())
    }

    fn text_begin(&mut self, _: Option<usize>) -> sval::Result {
        print!("\"");
        Ok(())
    }

    fn text_fragment_computed(&mut self, fragment: &str) -> sval::Result {
        print!("{}", fragment.escape_debug());

        Ok(())
    }

    fn text_end(&mut self) -> sval::Result {
        print!("\"");
        Ok(())
    }

    fn seq_begin(&mut self, _: Option<usize>) -> sval::Result {
        print!("[ ");
        Ok(())
    }

    fn seq_value_begin(&mut self) -> sval::Result {
        Ok(())
    }

    fn seq_value_end(&mut self) -> sval::Result {
        print!(", ");
        Ok(())
    }

    fn seq_end(&mut self) -> sval::Result {
        print!("]");
        Ok(())
    }
}