}
fn make_signature(decl: &ast::FnDecl, generics: &ast::Generics) -> String {
- let mut sig = String::new();
+ let mut sig = "fn ".to_owned();
if !generics.lifetimes.is_empty() || !generics.ty_params.is_empty() {
sig.push('<');
sig.push_str(&generics.lifetimes.iter()
sig.push_str(&decl.inputs.iter().map(arg_to_string).collect::<Vec<_>>().join(", "));
sig.push(')');
match decl.output {
- ast::FunctionRetTy::Default(_) => {}
+ ast::FunctionRetTy::Default(_) => sig.push_str(" -> ()"),
ast::FunctionRetTy::Ty(ref t) => sig.push_str(&format!(" -> {}", ty_to_string(t))),
}