syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"|"}]}
source_snippet:             | ExprKind::ConstBlock { .. } => Ok({
context_before:             | ExprKind::NonHirLiteral { .. }
context_after:                 let value = as_constant_inner(expr, |_| None, self.tcx);