protected function checkLoopUsageBody(Twig_TokenStream $stream, Twig_NodeInterface $node) {
if ($node instanceof Twig_Node_Expression_GetAttr && $node
->getNode('node') instanceof Twig_Node_Expression_Name && 'loop' == $node
->getNode('node')
->getAttribute('name')) {
$attribute = $node
->getNode('attribute');
if ($attribute instanceof Twig_Node_Expression_Constant && in_array($attribute
->getAttribute('value'), array(
'length',
'revindex0',
'revindex',
'last',
))) {
throw new Twig_Error_Syntax(sprintf('The "loop.%s" variable is not defined when looping with a condition', $attribute
->getAttribute('value')), $node
->getLine(), $stream
->getFilename());
}
}
// should check for parent.loop.XXX usage
if ($node instanceof Twig_Node_For) {
return;
}
foreach ($node as $n) {
if (!$n) {
continue;
}
$this
->checkLoopUsageBody($stream, $n);
}
}