syntax_data: {"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"ty::Const::new_expr(tcx,"}]}
source_snippet:             ty::Const::new_expr(tcx, Expr::new_binop(tcx, op, lhs_ty, rhs_ty, lhs, rhs))
context_before:             let rhs = recurse_build(tcx, body, rhs, root_span)?;
context_after:         }