/**
* Gets a block node from the specified tag command by searching for the
* tag class, instructing the tag to process the supplied data, and
* returning the resulting {@link \hydrogen\view\engines\hydrogen\Node}.
*
* Note that "BlockNode" can refer to two different things. This function
* produces a node from any generic block tag; it does not retrieve an
* instance of {@link \hydrogen\view\engines\hydrogen\nodes\BlockNode}
* unless such a result would be appropriate given the tag command.
*
* @param string $origin The template name in which the block tag was
* found.
* @param string $cmd The tag command for which to produce a node.
*/
protected function getBlockNode($origin, $cmd, $args)
{
$class = HydrogenEngine::getTagClass($cmd, $origin);
if ($class::mustBeFirst() && $this->originHasNodes($origin)) {
throw new TemplateSyntaxException("Tag must be first in template: {$cmd}");
}
return $class::getNode($cmd, $args, $this, $origin);
}
