protected function loadResourcesFromTheme($cacheKey, &$theme)
{
if (!$theme instanceof \Twig_Template) {
/* @var \Twig_Template $theme */
$theme = $this->environment->loadTemplate($theme);
}
if (null === $this->template) {
// Store the first \Twig_Template instance that we find so that
// we can call displayBlock() later on. It doesn't matter *which*
// template we use for that, since we pass the used blocks manually
// anyway.
$this->template = $theme;
}
// Use a separate variable for the inheritance traversal, because
// theme is a reference and we don't want to change it.
$currentTheme = $theme;
$context = $this->environment->mergeGlobals(array());
// The do loop takes care of template inheritance.
// Add blocks from all templates in the inheritance tree, but avoid
// overriding blocks already set.
do {
foreach ($currentTheme->getBlocks() as $block => $blockData) {
if (!isset($this->resources[$cacheKey][$block])) {
// The resource given back is the key to the bucket that
// contains this block.
$this->resources[$cacheKey][$block] = $blockData;
}
}
} while (false !== ($currentTheme = $currentTheme->getParent($context)));
}
