optional (or choice) LIMIT and OFFSET

[cyberhuman]

CREATE TABLE test ( id INTEGER PRIMARY KEY );
SELECT * FROM test
LIMIT @limit { Some { @limit } | None { 18446744073709551615 } }
OFFSET @offset { Some { @offset } | None { 0 } };
EOF
==> SELECT * FROM test
LIMIT @limit { Some { @limit } | None { 18446744073709551615 } }
OFFSET @offset { Some { @offset } | None { 0 } }
Position 2:14 Tokens: { Some { @limit } | None { 184467
Error: Sqlgg.Sql_parser.MenhirBasics.Error
Errors encountered, no code generated