namespace? expression.range;

// range
[1];
[[1]];
[2, 1 + 1];
[1:1];
[2:2, 1 + 1: 1 + 1];
[1:2:3, [1,2,3]];
[::-1];
[:-2:];
[2::];
[1 + 1];
[1 + 1] + 1;
[1,2,3];
[[1,2,3]];
[1:2:3,[1,2,3]];