@Override
Expr opt(final QueryContext ctx, final VarScope scp) throws QueryException {
if (sig == Function._UNIT_TEST_URIS || sig == Function._UNIT_TEST && expr.length == 0) {
for (final StaticFunc fn : ctx.funcs.funcs()) {
if (fn.compiled()) continue;
final Ann ann = fn.ann;
for (int i = ann.size(); --i >= 0; ) {
if (Token.eq(ann.names[i].uri(), QueryText.UNITURI)) {
fn.compile(ctx);
break;
}
}
}
}
return super.opt(ctx, scp);
}