@Override
public IterPath copy(final QueryContext qc, final VarScope scp, final IntObjMap<Var> vs) {
final Expr rt = root == null ? null : root.copy(qc, scp, vs);
return copyType(new IterPath(info, rt, Arr.copyAll(qc, scp, vs, steps)));
}
@Override
public Expr compile(final QueryContext ctx, final VarScope scp) throws QueryException {
for (final Let c : copies) c.expr = c.expr.compile(ctx, scp);
super.compile(ctx, scp);
return this;
}