pub const MAX_PAREN_DEPTH: u16 = 200;Expand description
Maximum allowed depth of parenthesis / operator recursion.
Each parse level requires two stack frames (parse_expr_climbing +
parse_atom). In debug builds these frames are large enough that
1024 levels can overflow the default 8 MB thread stack. 200 keeps
the recursive depth ≈ 400 frames, which is safe on every target.