pub use ParseError;
pub use ;
pub use Span;
/// Grow the stack on demand to prevent overflow in deeply nested ASTs.
///
/// This is called by generated `FromNode` implementations at every recursive
/// call site. When the remaining stack space drops below the red-zone (32 KiB),
/// a new 1 MiB stack segment is allocated transparently. The overhead on the
/// happy path (enough stack left) is a single pointer comparison.