Merge pull request #15 from yassun4dev/fix_raw_field_name

Support raw type field name

Author: ya7010

serde_valid/tests/specific_test.rs

@@ -0,0 +1,21 @@
+use serde_valid::Validate;
+
+#[test]
+fn test_raw_type_field() {
+    #[derive(Validate)]
+    // `"r#type"` is not a valid identifier.
+    // It's proc_macro2 specification.
+    // To avoid this, indicate `type`.
+    #[rule(sample_rule(type))]
+    struct MyStruct {
+        #[validate(maximum = 10)]
+        pub r#type: i32,
+    }
+
+    fn sample_rule(_type: &i32) -> Result<(), serde_valid::validation::Error> {
+        Ok(())
+    }
+
+    let my_struct = MyStruct { r#type: 1 };
+    assert!(my_struct.validate().is_ok());
+}

serde_valid_derive/src/rule/named_struct_rule.rs

@@ -104,11 +104,14 @@ fn extract_rule_from_meta_list(
         .filter_map(|nested_meta| {
             let arg = match nested_meta {
                 syn::NestedMeta::Meta(syn::Meta::Path(path)) => {
-                    arg_idents.insert(syn::Ident::new(
-                        &path.to_token_stream().to_string(),
-                        path.span(),
-                    ));
-                    Some(quote!(#path))
+                    let ident = path.to_token_stream().to_string();
+                    if ident == "type" {
+                        arg_idents.insert(syn::Ident::new_raw("type", path.span()));
+                        Some(quote!(r#type))
+                    } else {
+                        arg_idents.insert(syn::Ident::new(&ident, path.span()));
+                        Some(quote!(#path))
+                    }
                 }
                 _ => None,
             };