sig.push_str(&decl.inputs.iter().map(arg_to_string).collect::<Vec<_>>().join(", "));
sig.push(')');
match decl.output {
- ast::FunctionRetTy::None(_) => sig.push_str(" -> !"),
ast::FunctionRetTy::Default(_) => {}
ast::FunctionRetTy::Ty(ref t) => sig.push_str(&format!(" -> {}", ty_to_string(t))),
}