syntax_data: {"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"ty::ConstKind::Expr(ty::Expr"}]}
source_snippet:                     ty::ConstKind::Expr(ty::Expr { kind: ty::ExprKind::UnOp(c_op), .. }) => {
context_before:                     _ if op == UnOp::PtrMetadata => true,
context_after:                         c_op != op