public function __construct(ValuedQuery $selection, $delta, $opts)
{
if (isset($opts) && !\is_array($opts)) {
throw new RqlDriverError("Options must be an array.");
}
if (!(is_object($delta) && is_subclass_of($delta, "\\r\\Query"))) {
// If we can make it an object, we will wrap that object into a function.
// Otherwise, we will try to make it a function.
try {
$json = tryEncodeAsJson($delta);
if ($json !== false) {
$delta = new Json($json);
} else {
$delta = nativeToDatum($delta);
}
} catch (RqlDriverError $e) {
$delta = nativeToFunction($delta);
}
}
$delta = wrapImplicitVar($delta);
$this->setPositionalArg(0, $selection);
$this->setPositionalArg(1, $delta);
if (isset($opts)) {
foreach ($opts as $opt => $val) {
$this->setOptionalArg($opt, nativeToDatum($val));
}
}
}
function nativeToDatumOrFunction($f)
{
if (!(is_object($f) && is_subclass_of($f, "\\r\\Query"))) {
try {
$f = nativeToDatum($f);
if (!is_subclass_of($f, "\\r\\Datum")) {
// $f is not a simple datum. Wrap it into a function:
$f = new RFunction(array(new RVar('_')), $f);
}
} catch (RqlDriverError $e) {
$f = nativeToFunction($f);
}
}
return wrapImplicitVar($f);
}
