Fix type of Closure::arg_types

Author: aibaars

rust/.generated.list

@@ -334,7 +334,7 @@ pub struct Closure {
     pub id: TrapId,
     pub location: Option<trap::Label>,
     pub args: Vec<trap::Label>,
-    pub arg_types: Vec<trap::Label>,
+    pub arg_types: Vec<Option<trap::Label>>,
     pub ret_type: Option<trap::Label>,
     pub body: trap::Label,
     pub is_move: bool,
@@ -354,7 +354,9 @@ impl TrapEntry for Closure {
             out.add_tuple("closure_args", vec![trap::Arg::Label(id), i.into(), v.into()]);
         }
         for (i, &v) in self.arg_types.iter().enumerate() {
-            out.add_tuple("closure_arg_types", vec![trap::Arg::Label(id), i.into(), v.into()]);
+            if let Some(vv) = v {
+                out.add_tuple("closure_arg_types", vec![trap::Arg::Label(id), i.into(), v.into()]);
+            }
         }
         if let Some(v) = self.ret_type {
             out.add_tuple("closure_ret_types", vec![trap::Arg::Label(id), v.into()]);

rust/extractor/src/generated/top.rs

@@ -402,7 +402,7 @@ class Index(Expr):
 
 class Closure(Expr):
     args: list[Pat]
-    arg_types: list[TypeRef]
+    arg_types: list[optional[TypeRef]]
     ret_type: optional[TypeRef]
     body: Expr
     # TODO