}
}
+/// Write out the impl block for a defined trait struct which has a supertrait
+fn do_write_impl_trait<W: std::io::Write>(w: &mut W, trait_path: &str, trait_name: &syn::Ident, for_obj: &str) {
+ match trait_path {
+ "util::events::MessageSendEventsProvider" => {
+ writeln!(w, "impl lightning::{} for {} {{", trait_path, for_obj).unwrap();
+ writeln!(w, "\tfn get_and_clear_pending_msg_events(&self) -> Vec<lightning::util::events::MessageSendEvent> {{").unwrap();
+ writeln!(w, "\t\t<crate::{} as lightning::{}>::get_and_clear_pending_msg_events(&self.{})", trait_path, trait_path, trait_name).unwrap();
+ writeln!(w, "\t}}\n}}").unwrap();
+ },
+ _ => panic!(),
+ }
+}
+
// *******************************
// *** Per-Type Printing Logic ***
// *******************************
if supertrait.paren_token.is_some() || supertrait.lifetimes.is_some() {
unimplemented!();
}
- if let Some(ident) = supertrait.path.get_ident() {
- match (&format!("{}", ident) as &str, &ident) {
+ // First try to resolve path to find in-crate traits, but if that doesn't work
+ // assume its a prelude trait (eg Clone, etc) and just use the single ident.
+ if let Some(path) = $types.maybe_resolve_path(&supertrait.path, None) {
+ match (&path as &str, &supertrait.path.segments.iter().last().unwrap().ident) {
$( $pat => $e, )*
}
- } else {
- let path = $types.resolve_path(&supertrait.path, None);
- match (&path as &str, &supertrait.path.segments.iter().last().unwrap().ident) {
+ } else if let Some(ident) = supertrait.path.get_ident() {
+ match (&format!("{}", ident) as &str, &ident) {
$( $pat => $e, )*
}
+ } else {
+ panic!("Supertrait unresolvable and not single-ident");
}
},
syn::TypeParamBound::Lifetime(_) => unimplemented!(),
writeln!(w, "\t}}\n}}").unwrap();
},
(s, i) => {
- if s != "util::events::MessageSendEventsProvider" { unimplemented!(); }
- // XXX: We straight-up cheat here - instead of bothering to get the trait object we
- // just print what we need since this is only used in one place.
- writeln!(w, "impl lightning::{} for {} {{", s, trait_name).unwrap();
- writeln!(w, "\tfn get_and_clear_pending_msg_events(&self) -> Vec<lightning::util::events::MessageSendEvent> {{").unwrap();
- writeln!(w, "\t\t<crate::{} as lightning::{}>::get_and_clear_pending_msg_events(&self.{})", s, s, i).unwrap();
- writeln!(w, "\t}}\n}}").unwrap();
+ do_write_impl_trait(w, s, i, &trait_name);
}
) );
writeln!(w, "\t\tclone: Some({}_clone_void),", ident).unwrap();
},
(s, t) => {
- if s.starts_with("util::") {
- let supertrait_obj = types.crate_types.traits.get(s).unwrap();
+ if let Some(supertrait_obj) = types.crate_types.traits.get(s) {
writeln!(w, "\t\t{}: crate::{} {{", t, s).unwrap();
writeln!(w, "\t\t\tthis_arg: unsafe {{ (*this_arg).inner as *mut c_void }},").unwrap();
writeln!(w, "\t\t\tfree: None,").unwrap();
}
walk_supertraits!(trait_obj, types, (
(s, t) => {
- if s.starts_with("util::") {
+ if let Some(supertrait_obj) = types.crate_types.traits.get(s).cloned() {
writeln!(w, "use {}::{} as native{}Trait;", types.orig_crate, s, t).unwrap();
- let supertrait_obj = *types.crate_types.traits.get(s).unwrap();
for item in supertrait_obj.items.iter() {
match item {
syn::TraitItem::Method(m) => {