/**
* extractFirstCall to a Placeholder method from a Document.
*
* @param \nochso\WriteMe\Document $document
* @param int $priority
* @param int $offset
*
* @return Call|null
*/
public static function extractFirstCall(Document $document, $priority = \nochso\WriteMe\Interfaces\Placeholder::PRIORITY_FIRST, $offset = 0)
{
$call = null;
$content = $document->getContent();
if ($offset > 0) {
$content = mb_substr($content, $offset);
}
if (preg_match(self::REGEX, $content, $matches, PREG_OFFSET_CAPTURE) === 1) {
$call = new self();
$call->document = $document;
$call->priority = $priority;
$call->identifier = $matches[3][0];
$call->rawCall = $matches[0][0];
// Position of the match including additional offset from before
$call->rawCallFirstPosition = $matches[0][1] + $offset;
if (isset($matches[5]) && $matches[5][0] !== '') {
$call->method = $matches[5][0];
}
if (isset($matches[7])) {
$call->extractParameters($matches[7][0]);
}
}
return $call;
}