/**
* @param Lexer $lexer
* @return bool
*/
public function supports(Lexer $lexer)
{
if ($lexer->current() !== '(') {
return false;
}
if ($lexer->key() > 0) {
$whiteSpaceOrOpeningParenthesis = new MatchingIterator($lexer, '/\\s|\\(/', MatchingIterator::DIRECTION_DOWN);
for ($i = 0, $j = 2; $i < $j; $i++) {
if ($whiteSpaceOrOpeningParenthesis->valid() === false) {
return false;
}
if ($whiteSpaceOrOpeningParenthesis->key() < $lexer->key() - $i) {
return false;
}
$whiteSpaceOrOpeningParenthesis->next();
}
}
$key = $lexer->key() + 1;
$commaFound = false;
while ($nextToken = $lexer->peek($key)) {
if ($nextToken === '(') {
return false;
}
if ($nextToken === ',') {
$commaFound = true;
}
if ($nextToken === ')') {
return $commaFound;
}
$key++;
}
return false;
}
/**
* @param Lexer $lexer
* @param DOMNode $currentElement
* @return string[]
*/
private function createFunctionTokens(Lexer $lexer, DOMNode $currentElement)
{
$token = $lexer->current();
$documentElement = $currentElement->ownerDocument->documentElement;
$namespaces = FetchNamespacesFromNode::fetch($documentElement);
$functionName = $this->convertTokenToFunctionName($token, $namespaces);
if ($this->functions->has($functionName)) {
$function = $this->functions->get($functionName);
if ($function instanceof ReplaceFunctionInterface) {
return $function->replace($lexer, $currentElement);
}
}
return [$token];
}
/**
* @param Lexer $lexer
* @return bool
*/
public function supports(Lexer $lexer)
{
return $lexer->current() === 'to' && preg_match('/\\s/', $lexer->peek($lexer->key() - 1)) === 1;
}