{"record":{"id":"84ffc4d22507ca3b","repo":"bevyengine/bevy","slug":"cannot-use-parenthesized-type-as-remote-type","errorCode":null,"errorMessage":"cannot use parenthesized type as remote type","messagePattern":"cannot use parenthesized type as remote type","errorType":"validation","errorClass":"syn::Error","httpStatus":null,"severity":"error","filePath":"crates/bevy_reflect/derive/src/remote.rs","lineNumber":471,"sourceCode":"    pub fn type_path(&self) -> &'a TypePath {\n        self.path\n    }\n\n    /// Attempts to convert the [type path](TypePath) of this remote type into an [expression path](ExprPath).\n    ///\n    /// For example, this would convert `foo::Bar<T>` into `foo::Bar::<T>` to be used as part of an expression.\n    ///\n    /// This will return an error for types that are parenthesized, such as in `Fn() -> Foo`.\n    pub fn as_expr_path(&self) -> Result<ExprPath, syn::Error> {\n        let mut expr_path = self.path.clone();\n        if let Some(segment) = expr_path.path.segments.last_mut() {\n            match &mut segment.arguments {\n                PathArguments::None => {}\n                PathArguments::AngleBracketed(arg) => {\n                    arg.colon2_token = Some(PathSep::default());\n                }\n                PathArguments::Parenthesized(arg) => {\n                    return Err(syn::Error::new(\n                        arg.span(),\n                        \"cannot use parenthesized type as remote type\",\n                    ))\n                }\n            }\n        }\n\n        Ok(ExprPath {\n            path: expr_path.path,\n            qself: expr_path.qself,\n            attrs: Vec::new(),\n        })\n    }\n}\n\n/// Metadata from the arguments defined in the `reflect_remote` attribute.\n///\n/// The syntax for the arguments is: `#[reflect_remote(REMOTE_TYPE_PATH)]`.","sourceCodeStart":453,"sourceCodeEnd":489,"githubUrl":"https://github.com/bevyengine/bevy/blob/396ca727080776bd313bb892423b7d94e03b81b4/crates/bevy_reflect/derive/src/remote.rs#L453-L489","documentation":"Compile-time syn error from RemoteType::as_expr_path: the remote type's path is parenthesized (e.g. Fn() -> Foo), so it cannot be converted into an expression path usable by the generated remote-reflect code.","triggerScenarios":"Thrown at crates/bevy_reflect/derive/src/remote.rs:471 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Use a non-parenthesized type path for the remote type","Wrap the parenthesized type in a newtype and reflect that instead"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"396ca727080776bd313bb892423b7d94e03b81b4","analyzedAt":"2026-08-20T16:12:39.808Z","contentChangedAt":"2026-08-20T16:12:39.808Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}