public function addChild($level, NodeAbstract $node)
{
$this->updateStack($level);
if (!$this->parent instanceof NestInterface) {
$parent = $this->parent;
if ($parent instanceof Statement) {
$parent = $parent->getContent();
}
$msg = sprintf('Illegal nesting: nesting within %s is illegal', $parent->getNodeName());
throw new TreeBuilderException($msg);
}
if ($this->parent->hasContent() && !$this->parent->allowsNestingAndContent()) {
if ($this->parent instanceof Tag) {
$msg = sprintf('Illegal nesting: content can\'t be both given on the same line as %%%s and nested within it', $this->parent->getTagName());
} else {
$msg = sprintf('Illegal nesting: nesting within a tag that already has content is illegal');
}
throw new TreeBuilderException($msg);
}
if ($this->parent instanceof Tag && $this->parent->getFlags() & Tag::FLAG_SELF_CLOSE) {
$msg = 'Illegal nesting: nesting within a self-closing tag is illegal';
throw new TreeBuilderException($msg);
}
$this->parent->addChild($node);
$this->prev = $node;
}
