{"record":{"id":"bdc01bce00f7c706","repo":"bevyengine/bevy","slug":"expected-an-identifier-but-reached-end-of-path-st","errorCode":null,"errorMessage":"expected an identifier, but reached end of path string","messagePattern":"expected an identifier, but reached end of path string","errorType":"exception","errorClass":"ParseError","httpStatus":null,"severity":"error","filePath":"crates/bevy_reflect/src/path/parse.rs","lineNumber":18,"sourceCode":"use core::{\n    fmt::{self, Write},\n    num::ParseIntError,\n    str::from_utf8_unchecked,\n};\nuse thiserror::Error;\n\nuse super::{Access, ReflectPathError};\n\n/// An error that occurs when parsing reflect path strings.\n#[derive(Debug, PartialEq, Eq, Error)]\n#[error(transparent)]\npub struct ParseError<'a>(Error<'a>);\n\n/// A parse error for a path string.\n#[derive(Debug, PartialEq, Eq, Error)]\nenum Error<'a> {\n    #[error(\"expected an identifier, but reached end of path string\")]\n    NoIdent,\n\n    #[error(\"expected an identifier, got '{0}' instead\")]\n    ExpectedIdent(Token<'a>),\n\n    #[error(\"failed to parse index as integer\")]\n    InvalidIndex(#[from] ParseIntError),\n\n    #[error(\"a '[' wasn't closed, reached end of path string before finding a ']'\")]\n    Unclosed,\n\n    #[error(\"a '[' wasn't closed properly, got '{0}' instead\")]\n    BadClose(Token<'a>),\n\n    #[error(\"a ']' was found before an opening '['\")]\n    CloseBeforeOpen,\n}\n","sourceCodeStart":1,"sourceCodeEnd":36,"githubUrl":"https://github.com/bevyengine/bevy/blob/396ca727080776bd313bb892423b7d94e03b81b4/crates/bevy_reflect/src/path/parse.rs#L1-L36","documentation":"This is the nested ParseError variant NoIdent: while tokenizing a reflect path string, the parser expected an identifier (a field or variant name after '.' or at the start of a segment) but hit the end of the string. ReflectPathError::ParseError surfaces it with the offset where the path ran out.","triggerScenarios":"A path that ends where an identifier is required: trailing dots like \"foo.\" or \"foo[0].\", or a path handed in as just a separator; also strings that after skipping whitespace contain no final segment.","commonSituations":"Programmatically built paths that append '.' without the next segment; user-typed filters/queries submitted before finishing; trailing-dot typos in config-driven field addressing.","solutions":["Remove the trailing separator or complete the final identifier segment.","When concatenating path segments in code, only append '.' when another segment follows.","Trim and reject empty/separator-only paths before calling the path API.","On error, use the reported offset (end of string) to locate the missing segment."],"exampleFix":"// before\nlet v = entity.path::<f32>(\"transform.translation.\"); // NoIdent at end\n\n// after\nlet v = entity.path::<f32>(\"transform.translation\");","handlingStrategy":"try-catch","validationCode":"fn complete_segments(p: &str) -> bool {\n    !p.ends_with('.') && !p.is_empty() && !p.split('.').any(str::is_empty)\n}","typeGuard":null,"tryCatchPattern":"match entity.reflect_path(path_str) {\n    Ok(el) => { /* ... */ }\n    Err(ReflectPathError::ParseError { offset, path, error }) if error.to_string().contains(\"end of path\") => {\n        warn!(\"'{path}' ends where a name was expected (offset {offset})\");\n    }\n    Err(other) => warn!(\"path failed: {other}\"),\n}","preventionTips":["When concatenating segments, append '.' only if another segment follows.","Trim input and reject empty or separator-only paths at the boundary."],"tags":["rust","bevy","bevy-reflect","reflect-path","parse-error","no-ident"],"backgroundTag":"invalid-path-syntax","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"}