protected function Twig_Parser::filterBodyNodes in Translation template extractor 7.3

Same name and namespace in other branches

1. 6.3 vendor/Twig/Parser.php \Twig_Parser::filterBodyNodes()

1 call to Twig_Parser::filterBodyNodes()

Twig_Parser::parse in vendor/Twig/Parser.php

Converts a token stream to a node tree.

File

vendor/Twig/Parser.php, line 362

Class

Twig_Parser

Default parser implementation.

Code

protected function filterBodyNodes(Twig_NodeInterface $node) {

  // check that the body does not contain non-empty output nodes
  if ($node instanceof Twig_Node_Text && !ctype_space($node
    ->getAttribute('data')) || !$node instanceof Twig_Node_Text && !$node instanceof Twig_Node_BlockReference && $node instanceof Twig_NodeOutputInterface) {
    if (false !== strpos((string) $node, chr(0xef) . chr(0xbb) . chr(0xbf))) {
      throw new Twig_Error_Syntax('A template that extends another one cannot have a body but a byte order mark (BOM) has been detected; it must be removed.', $node
        ->getLine(), $this
        ->getFilename());
    }
    throw new Twig_Error_Syntax('A template that extends another one cannot have a body.', $node
      ->getLine(), $this
      ->getFilename());
  }

  // bypass "set" nodes as they "capture" the output
  if ($node instanceof Twig_Node_Set) {
    return $node;
  }
  if ($node instanceof Twig_NodeOutputInterface) {
    return;
  }
  foreach ($node as $k => $n) {
    if (null !== $n && null === $this
      ->filterBodyNodes($n)) {
      $node
        ->removeNode($k);
    }
  }
  return $node;
}