From 435c7e342f731086f87eac546f4f6a2e06035f9a Mon Sep 17 00:00:00 2001
From: Kegan Dougal <7190048+kegsay@users.noreply.github.com>
Date: Thu, 14 Mar 2024 16:48:01 +0000
Subject: [PATCH] Also use type casts for callbacks

Signed-off-by: Kegan Dougal <7190048+kegsay@users.noreply.github.com>
---
 bindgen/templates/CallbackInterfaceTemplate.go | 2 +-
 fixtures/errors/src/errors.udl                 | 4 ++++
 fixtures/errors/src/lib.rs                     | 4 ++++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/bindgen/templates/CallbackInterfaceTemplate.go b/bindgen/templates/CallbackInterfaceTemplate.go
index 6bc4a79..4e388ff 100644
--- a/bindgen/templates/CallbackInterfaceTemplate.go
+++ b/bindgen/templates/CallbackInterfaceTemplate.go
@@ -69,7 +69,7 @@ func ({{ foreign_callback }}) {{ method_name }} (callback {{ type_name }}, args
 	{%- endmatch -%}
 	callback.{{ meth.name()|fn_name }}(
 		{%- for arg in meth.arguments() -%}
-		{{ arg|read_fn }}(reader)
+		{{ arg|read_fn }}(reader){{arg|error_type_cast}}
 		{%- if !loop.last %}, {% endif -%}
 		{%- endfor -%}
 		);
diff --git a/fixtures/errors/src/errors.udl b/fixtures/errors/src/errors.udl
index 6c1d839..0230101 100644
--- a/fixtures/errors/src/errors.udl
+++ b/fixtures/errors/src/errors.udl
@@ -51,6 +51,10 @@ dictionary Vec2 {
     double y;
 };
 
+callback interface Callback {
+    void do_something(BoobyTrapError error);
+};
+
 namespace errors {
 
   [Throws=BoobyTrapError]
diff --git a/fixtures/errors/src/lib.rs b/fixtures/errors/src/lib.rs
index 91ccf79..9172868 100644
--- a/fixtures/errors/src/lib.rs
+++ b/fixtures/errors/src/lib.rs
@@ -57,6 +57,10 @@ pub struct Vec2 {
     y: f64,
 }
 
+pub trait Callback {
+    fn do_something(&self, error: BoobyTrapError);
+}
+
 impl Vec2 {
     pub fn new(x: f64, y: f64) -> Vec2 {
         Vec2 { x, y }