/**
* Resolves asset dependencies.
*
* @param AssetInterface $asset
* @param AssetInterface[] $resolved
* @param AssetInterface[] $unresolved
* @return AssetInterface[]
* @throws \RuntimeException
*/
protected function resolveDependencies($asset, &$resolved = [], &$unresolved = [])
{
$name = $asset->getName();
$unresolved[$name] = $asset;
foreach ($asset->getDependencies() as $dependency) {
if ($dependency[0] === '~' && !isset($resolved[$dependency = ltrim($dependency, '~')])) {
continue;
}
if (!isset($resolved[$dependency])) {
if (isset($unresolved[$dependency])) {
throw new \RuntimeException(sprintf('Circular asset dependency "%s > %s" detected.', $name, $dependency));
}
if ($d = $this->registered->get($dependency)) {
$this->resolveDependencies($d, $resolved, $unresolved);
}
}
}
$resolved[$name] = $asset;
unset($unresolved[$name]);
if (isset($this->lazy[$name])) {
foreach ($this->lazy[$name] as $dependency) {
if ($d = $this->registered->get($dependency)) {
$this->resolveDependencies($d, $resolved, $unresolved);
}
}
}
return $resolved;
}
