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<?php
declare(strict_types=1);
namespace PHPUnit\Architecture\Elements\Layer;
use ArrayIterator;
use Closure;
use IteratorAggregate;
use PHPUnit\Architecture\Elements\ObjectDescription;
use Traversable;
/**
* @implements IteratorAggregate<int, ObjectDescription>
*/
final class Layer implements IteratorAggregate
{
use LayerLeave;
use LayerExclude;
use LayerSplit;
protected ?string $name = null;
/**
* @var ObjectDescription[]
*/
protected array $objects = [];
/**
* @param ObjectDescription[] $objects
*/
public function __construct(
array $objects
) {
$this->objects = $objects;
}
#[\ReturnTypeWillChange]
public function getIterator(): Traversable
{
return new ArrayIterator($this->objects);
}
public function getName(): string
{
if ($this->name === null) {
$objectsName = array_map(static function (ObjectDescription $objectDescription): string {
return $objectDescription->name;
}, $this->objects);
sort($objectsName);
$this->name = implode(',', $objectsName);
}
return $this->name;
}
/**
* Compare layers
*/
public function equals(Layer $layer): bool
{
return $this->getName() === $layer->getName();
}
/**
* @param Closure $closure static function(ObjectDescription $objectDescription): bool
*/
public function leave(Closure $closure): self
{
return new Layer(array_filter($this->objects, $closure));
}
/**
* @param Closure $closure static function(ObjectDescription $objectDescription): bool
*/
public function exclude(Closure $closure): self
{
return new Layer(array_filter($this->objects, static function ($item) use ($closure): bool {
return !$closure($item);
}));
}
/**
* @param Closure $closure static function(ObjectDescription $objectDescription): ?string
* @return static[]
*/
public function split(Closure $closure): array
{
$objects = [];
foreach ($this->objects as $object) {
/** @var null|string $key */
$key = $closure($object);
if ($key === null) {
continue;
}
if (!isset($objects[$key])) {
$objects[$key] = [];
}
$objects[$key][] = $object;
}
return array_map(static function (array $objects): Layer {
return new Layer($objects);
}, $objects);
}
/**
* @return array<string, mixed>
*/
public function essence(string $path): array
{
return $this->essenceRecursion(
'',
explode('.', $path),
$this->objects
);
}
/**
* @param string[] $parts
* @param array<string, mixed> $list
*
* @return array<string, mixed>
*/
private function essenceRecursion(string $path, array $parts, $list): array
{
$part = array_shift($parts);
if ($part === null) {
return $list;
}
$result = [];
if ($part === '*') {
foreach ($list as $key => $item) {
/** @var array<string, mixed> $item */
$result = array_merge($result, $this->essenceRecursion("$path.$key", $parts, $item));
}
return $result;
}
foreach ($list as $key => $item) {
$result["$path.$key"] = $item->$part;
}
return $this->essenceRecursion($path, $parts, $result);
}
}
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