syntax_data: {"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"hir::ExprKind::Match(discr,"}]}
source_snippet:             hir::ExprKind::Match(discr, arms, match_source) => ExprKind::Match {
context_before:             },
context_after:                 scrutinee: self.mirror_expr(discr),