Validate optional_fields compatibility with other attributes

Aleph-Alpha · Nov 11, 2024 · f72238f · f72238f
1 parent 033d096
commit f72238f
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/macros/src/attr/struct.rs b/macros/src/attr/struct.rs
@@ -108,6 +108,10 @@ impl Attr for StructAttr {
             if self.tag.is_some() {
                 syn_err!("`tag` is not compatible with `type`");
             }
+
+            if let Optional::Optional { .. } = self.optional_fields {
+                syn_err!("`optional_fields` is not compatible with `type`");
+            }
         }
 
         if self.type_as.is_some() {
@@ -118,6 +122,10 @@ impl Attr for StructAttr {
             if self.rename_all.is_some() {
                 syn_err!("`rename_all` is not compatible with `as`");
             }
+
+            if let Optional::Optional { .. } = self.optional_fields {
+                syn_err!("`optional_fields` is not compatible with `as`");
+            }
         }
 
         if !matches!(item, Fields::Named(_)) {
@@ -128,6 +136,10 @@ impl Attr for StructAttr {
             if self.rename_all.is_some() {
                 syn_err!("`rename_all` cannot be used with unit or tuple structs");
             }
+
+            if let Optional::Optional { .. } = self.optional_fields {
+                syn_err!("`optional_fields` cannot be used with unit or tuple structs");
+            }
         }
 
         Ok(())