syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"thir::PatKind::Constant"}]}
source_snippet:             thir::PatKind::Constant { value } => value.has_non_region_param(),
context_before:         match pat.kind {
context_after:             thir::PatKind::Range(ref range) => {