/**
* Escapes a phrase with () or "" depending on type
*
* @param Phrase[] $phrases
* @param null|string $type (any|all|null) any = (my phrase), all = "my phrase", null = do nothing
*
* @return array
*/
private function escapePhrasesForExpression(array $phrases, $type = null)
{
$return = [];
switch ($type) {
case 'any':
$s = '(%s)';
break;
case 'all':
$s = '"%s"';
break;
default:
$s = '%s';
}
foreach ($phrases as $phrase) {
if (!$phrase instanceof Phrase) {
$phrase = new Phrase($phrase);
}
if ($phrase->isEmpty()) {
continue;
}
if ($phrase->isWordGroup() && !$phrase->isPhrase()) {
$return[] = sprintf($s, $phrase);
} else {
$return[] = (string) $phrase;
}
}
return $return;
}