pub struct Graphics;

struct Frame<'g> {
    graphics: &'g mut Graphics,
}

struct Paint<'g, 'f> {
    frame: &'f mut Frame<'g>,
}

impl Graphics {
    fn frame(&mut self) -> Frame<'_> {
        Frame {
            graphics: self,
        }
    }
}


impl<'g> Frame<'g> {
    fn paint(&mut self) -> Paint<'g, '_> {
        Paint {
            frame: self,
        }
    }

    fn draw(&mut self) {}
}

impl<'g, 'f> Paint<'g, 'f> {
    fn glyph(&mut self) {

    }
}

fn main() {
    let mut graphics = Graphics;
    let mut frame = graphics.frame();
    frame.paint().glyph();
    frame.draw();
}