syntax_data: {"ast_node_type":"function","tokens":[{"end":78,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet: fn has_structural_eq_impl<'tcx>(tcx: TyCtxt<'tcx>, adt_ty: Ty<'tcx>) -> bool {
context_before: /// implements the trait.
context_after:     let infcx = &tcx.infer_ctxt().build(TypingMode::non_body_analysis());