From: Matt Corallo <git@bluematt.me>
Date: Thu, 29 Feb 2024 14:56:22 +0000 (+0000)
Subject: Handle `-> ()` as an fn return value
X-Git-Tag: v0.0.123.0^2~10
X-Git-Url: http://git.bitcoin.ninja/?a=commitdiff_plain;h=b4335d28d94291e1d91a3f2c86887d2b75dd1681;p=ldk-c-bindings

Handle `-> ()` as an fn return value
---

diff --git a/c-bindings-gen/src/blocks.rs b/c-bindings-gen/src/blocks.rs
index 7ee216a..eb3d56e 100644
--- a/c-bindings-gen/src/blocks.rs
+++ b/c-bindings-gen/src/blocks.rs
@@ -593,14 +593,19 @@ pub fn write_method_params<W: std::io::Write>(w: &mut W, sig: &syn::Signature, t
 	write!(w, ")").unwrap();
 	match &sig.output {
 		syn::ReturnType::Type(_, rtype) => {
-			write!(w, " -> ").unwrap();
-			if let Some(mut remaining_path) = first_seg_self(&*rtype) {
-				if remaining_path.next().is_none() {
-					write!(w, "{}", this_param).unwrap();
-					return;
+			let mut ret_ty = Vec::new();
+			types.write_c_type(&mut ret_ty, &*rtype, generics, true);
+
+			if !ret_ty.is_empty() {
+				write!(w, " -> ").unwrap();
+				if let Some(mut remaining_path) = first_seg_self(&*rtype) {
+					if remaining_path.next().is_none() {
+						write!(w, "{}", this_param).unwrap();
+						return;
+					}
 				}
+				w.write_all(&ret_ty).unwrap();
 			}
-			types.write_c_type(w, &*rtype, generics, true);
 		},
 		_ => {},
 	}