Introspection

intropective.rs

pub trait Introspectable {
    fn size (&self) -> uint;
    fn raw_data (&self) -> ~[u8];
    fn debug_info (&self) -> ~str;
}

impl <T> Introspectable for T {
    fn size (&self) -> uint { sys::size_of:: <T> () }

    fn raw_data (&self) -> ~[u8] {
        unsafe {
            let raw : *u8 = cast::transmute (self);
            let len = self.size ();
            do vec::build_sized (len) |push| {
                for uint::range (0, len) |ii| {
                    push (*(ptr::offset (raw, ii)))
                }
            }
        }
    }

    fn debug_info (&self) -> ~str {
        ~"<" /* + self.type_name () + " " */
            + ptr::to_uint (self).to_str () + " "
            + self.raw_data ().to_str () + ">"
    }
}

fn main () {
    let x = 50;
    println (x.debug_info ())
}