XXX: support a thing

[ldk-c-bindings] / c-bindings-gen / src / types.rs

diff --git a/c-bindings-gen/src/types.rs b/c-bindings-gen/src/types.rs
index 498bdf5c079bef414ed5a81ad32296feac5f57fe..0552633d69503a381f7c8c47a107fd63e0b49cec 100644 (file)
--- a/c-bindings-gen/src/types.rs
+++ b/c-bindings-gen/src/types.rs
@@ -137,7 +137,7 @@ pub fn export_status(attrs: &[syn::Attribute]) -> ExportStatus {
 }
 
 pub fn assert_simple_bound(bound: &syn::TraitBound) {
-       if bound.paren_token.is_some() || bound.lifetimes.is_some() { unimplemented!(); }
+       if bound.paren_token.is_some() { unimplemented!(); }
        if let syn::TraitBoundModifier::Maybe(_) = bound.modifier { unimplemented!(); }
 }
 
@@ -294,23 +294,28 @@ impl<'a, 'p: 'a> GenericTypes<'a, 'p> {
                                &syn::TraitItem::Type(ref t) => {
                                        if t.default.is_some() || t.generics.lt_token.is_some() { unimplemented!(); }
                                        let mut bounds_iter = t.bounds.iter();
-                                       match bounds_iter.next().unwrap() {
-                                               syn::TypeParamBound::Trait(tr) => {
-                                                       assert_simple_bound(&tr);
-                                                       if let Some(path) = types.maybe_resolve_path(&tr.path, None) {
-                                                               if types.skip_path(&path) { continue; }
-                                                               // In general we handle Deref<Target=X> as if it were just X (and
-                                                               // implement Deref<Target=Self> for relevant types). We don't
-                                                               // bother to implement it for associated types, however, so we just
-                                                               // ignore such bounds.
-                                                               if path != "std::ops::Deref" && path != "core::ops::Deref" {
-                                                                       self.typed_generics.insert(&t.ident, path);
+                                       loop {
+                                               match bounds_iter.next().unwrap() {
+                                                       syn::TypeParamBound::Trait(tr) => {
+                                                               assert_simple_bound(&tr);
+                                                               if let Some(path) = types.maybe_resolve_path(&tr.path, None) {
+                                                                       if types.skip_path(&path) { continue; }
+                                                                       // In general we handle Deref<Target=X> as if it were just X (and
+                                                                       // implement Deref<Target=Self> for relevant types). We don't
+                                                                       // bother to implement it for associated types, however, so we just
+                                                                       // ignore such bounds.
+                                                                       if path != "std::ops::Deref" && path != "core::ops::Deref" {
+                                                                               self.typed_generics.insert(&t.ident, path);
+                                                                       }
+                                                               } else { unimplemented!(); }
+                                                               for bound in bounds_iter {
+                                                                       if let syn::TypeParamBound::Trait(_) = bound { unimplemented!(); }
                                                                }
-                                                       } else { unimplemented!(); }
-                                               },
-                                               _ => unimplemented!(),
+                                                               break;
+                                                       },
+                                                       syn::TypeParamBound::Lifetime(_) => {},
+                                               }
                                        }
-                                       if bounds_iter.next().is_some() { unimplemented!(); }
                                },
                                _ => {},
                        }