syntax_data: {"ast_node_type":"other","tokens":[{"end":31,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                 if !bit_state {
context_before:                 debug!("rustc_peek({:?} = &{:?}) bit_state: {}", call.arg, place, bit_state);
context_after:                     tcx.dcx().emit_err(PeekBitNotSet { span: call.span });