syntax_data: {"ast_node_type":"other","tokens":[{"end":25,"kind":"keyword","start":0,"text":"*slot"}]}
source_snippet:         *slot = match v {
context_before:     pub(crate) fn parse_mir_include_spans(slot: &mut MirIncludeSpans, v: Option<&str>) -> bool {
context_after:             Some("on" | "yes" | "y" | "true") | None => MirIncludeSpans::On,