//@ force-host //@ no-prefer-dynamic #![crate_type = "proc-macro"] extern crate proc_macro; use proc_macro::TokenStream; #[proc_macro_derive(AddImpl)] pub fn derive(input: TokenStream) -> TokenStream { "use std::cmp::Ordering; impl Ord for PriorityQueue { fn cmp(&self, other: &Self) -> Ordering { self.0.cmp(&self.height) } } " .parse() .unwrap() }