syntax_data: {"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"hir::ExprKind::Assign(lhs,"}]}
source_snippet:             hir::ExprKind::Assign(lhs, rhs, _) => {
context_after:                 ExprKind::Assign { lhs: self.mirror_expr(lhs), rhs: self.mirror_expr(rhs) }