refactor: add better messages

2026-02-04 05:52:03 +00:00 · 2025-08-12 00:04:09 +03:00
parent c4cf6aa25b
commit e20000513a
8 changed files with 83 additions and 2 deletions
--- a/filecaster-derive/src/from_file.rs
+++ b/filecaster-derive/src/from_file.rs
@@ -60,12 +60,14 @@ fn extract_named_fields(input: &DeriveInput) -> Result<&FieldsNamed> {
            Fields::Named(fields) => Ok(fields),
            _ => Err(Error::new_spanned(
                &input.ident,
-                "FromFile can only be derived for structs with named fields",
+                r#"FromFile only works on structs with *named* fields.
+Tuple structs and unit structs are not supported."#,
            )),
        },
        _ => Err(Error::new_spanned(
            &input.ident,
-            "FromFile can only be derived for structs",
+            r#"FromFile only works on structs.
+Enums are not supported."#,
        )),
    }
 }