Codegen: properly handle RustTy::ExtenderReceiver

Signed-off-by: Jan Haller <[email protected]>

Author: Bromeon

godot-codegen/src/generator/default_parameters.rs

@@ -191,10 +191,8 @@ fn make_extender_receiver(sig: &dyn Function) -> ExtenderReceiver {
             ExtenderReceiver {
                 object_fn_param: Some(FnParam {
                     name: ident("surround_object"),
-                    // Not exactly EngineClass, but close enough
-                    type_: RustTy::EngineClass {
+                    type_: RustTy::ExtenderReceiver {
                         tokens: quote! { &'a #builder_mut re_export::#class },
-                        inner_class: ident("unknown"),
                     },
                     default_value: None,
                 }),

godot-codegen/src/models/domain.rs

@@ -622,6 +622,9 @@ pub enum RustTy {
         #[allow(dead_code)] // only read in minimal config
         inner_class: Ident,
     },
+
+    /// Receiver type of default parameters extender constructor.
+    ExtenderReceiver { tokens: TokenStream },
 }
 
 impl RustTy {
@@ -650,6 +653,7 @@ impl ToTokens for RustTy {
             RustTy::EngineEnum { tokens: path, .. } => path.to_tokens(tokens),
             RustTy::EngineBitfield { tokens: path, .. } => path.to_tokens(tokens),
             RustTy::EngineClass { tokens: path, .. } => path.to_tokens(tokens),
+            RustTy::ExtenderReceiver { tokens: path } => path.to_tokens(tokens),
         }
     }
 }

godot-codegen/src/special_cases/codegen_special_cases.rs

@@ -53,6 +53,7 @@ fn is_type_excluded(ty: &str, ctx: &mut Context) -> bool {
                 Some(class) => is_class_excluded(class.as_str()),
             },
             RustTy::EngineClass { inner_class, .. } => is_class_excluded(&inner_class.to_string()),
+            RustTy::ExtenderReceiver { .. } => false,
         }
     }
     is_rust_type_excluded(&conv::to_rust_type(ty, None, ctx))