Fix make::unnamed_param result a untyped_param

crates/syntax/src/ast/make.rs

@@ -1016,7 +1016,19 @@ pub fn item_static(
 }
 
 pub fn unnamed_param(ty: ast::Type) -> ast::Param {
-    ast_from_text(&format!("fn f({ty}) {{ }}"))
+    quote! {
+        Param {
+            #ty
+        }
+    }
+}
+
+pub fn untyped_param(pat: ast::Pat) -> ast::Param {
+    quote! {
+        Param {
+            #pat
+        }
+    }
 }
 
 pub fn param(pat: ast::Pat, ty: ast::Type) -> ast::Param {
@@ -1456,3 +1468,86 @@ pub mod tokens {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use expect_test::expect;
+
+    use super::*;
+
+    #[track_caller]
+    fn check(node: impl AstNode, expect: expect_test::Expect) {
+        let node_debug = format!("{:#?}", node.syntax());
+        expect.assert_eq(&node_debug);
+    }
+
+    #[test]
+    fn test_unnamed_param() {
+        check(
+            unnamed_param(ty("Vec")),
+            expect![[r#"
+                [email protected]
+                  [email protected]
+                    [email protected]
+                      [email protected]
+                        [email protected]
+                          [email protected] "Vec"
+            "#]],
+        );
+
+        check(
+            unnamed_param(ty("Vec<T>")),
+            expect![[r#"
+                [email protected]
+                  [email protected]
+                    [email protected]
+                      [email protected]
+                        [email protected]
+                          [email protected] "Vec"
+                        [email protected]
+                          [email protected] "<"
+                          [email protected]
+                            [email protected]
+                              [email protected]
+                                [email protected]
+                                  [email protected]
+                                    [email protected] "T"
+                          [email protected] ">"
+            "#]],
+        );
+    }
+
+    #[test]
+    fn test_untyped_param() {
+        check(
+            untyped_param(path_pat(ext::ident_path("name"))),
+            expect![[r#"
+                [email protected]
+                  [email protected]
+                    [email protected]
+                      [email protected] "name"
+            "#]],
+        );
+
+        check(
+            untyped_param(
+                range_pat(
+                    Some(path_pat(ext::ident_path("start"))),
+                    Some(path_pat(ext::ident_path("end"))),
+                )
+                .into(),
+            ),
+            expect![[r#"
+                [email protected]
+                  [email protected]
+                    [email protected]
+                      [email protected]
+                        [email protected] "start"
+                    [email protected] ".."
+                    [email protected]
+                      [email protected]
+                        [email protected] "end"
+            "#]],
+        );
+    }
+}