From 53e91fd10d98313d2175470416f635d080e67e65 Mon Sep 17 00:00:00 2001
From: Matt Corallo <git@bluematt.me>
Date: Sun, 1 Oct 2023 23:05:26 +0000
Subject: [PATCH] Include argument info docs on all-pub struct constructors

Fixes https://github.com/lightningdevkit/ldk-garbagecollected/issues/129
---
 c-bindings-gen/src/main.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/c-bindings-gen/src/main.rs b/c-bindings-gen/src/main.rs
index 956420b..7c06687 100644
--- a/c-bindings-gen/src/main.rs
+++ b/c-bindings-gen/src/main.rs
@@ -812,6 +812,19 @@ fn writeln_struct<'a, 'b, W: std::io::Write>(w: &mut W, s: &'a syn::ItemStruct,
 	if all_fields_settable {
 		// Build a constructor!
 		writeln!(w, "/// Constructs a new {} given each field", struct_name).unwrap();
+		match &s.fields {
+			syn::Fields::Named(fields) => {
+				writeln_arg_docs(w, &[], "", types, Some(&gen_types),
+					fields.named.iter().map(|field| (format!("{}_arg", field.ident.as_ref().unwrap()), &field.ty)),
+					None);
+			},
+			syn::Fields::Unnamed(fields) => {
+				writeln_arg_docs(w, &[], "", types, Some(&gen_types),
+					fields.unnamed.iter().enumerate().map(|(idx, field)| (format!("{}_arg", ('a' as u8 + idx as u8)), &field.ty)),
+					None);
+			},
+			syn::Fields::Unit => {},
+		}
 		write!(w, "#[must_use]\n#[no_mangle]\npub extern \"C\" fn {}_new(", struct_name).unwrap();
 
 		match &s.fields {
-- 
2.30.2