pub const MAX_DEPTH: u32 = 32 /* 32u32 */;Expand description
How deep an expression nests: at most this many functions inside one
another, whatever built it — the grammar, data, prefix code, C’s
builders or a Rust tree handed to intern. Every walk of a tree
(evaluating, hashing, comparing, spelling, dropping) recurses, so a
tree the table keeps is one those walks can finish.