syntax_data: {"ast_node_type":"variable","tokens":[{"end":65,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:     if let Some(reported) = cx.typeck_results.tainted_by_errors {
context_before:     let mut cx = ThirBuildCx::new(tcx, owner_def);
context_after:         return Err(reported);