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<?php |
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declare(strict_types=1); |
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namespace Furious\Container; |
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use Closure; |
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use Furious\Container\Exception\DefinitionNotFoundException; |
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use Psr\Container\ContainerInterface; |
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use ReflectionClass; |
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use ReflectionException; |
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use ReflectionParameter; |
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use function array_key_exists; |
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use function class_exists; |
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final class Container implements ContainerInterface |
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{ |
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private array $values = []; |
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private array $definitions; |
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/** |
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* Container constructor. |
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* @param array $definitions |
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*/ |
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public function __construct(array $definitions = []) |
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{ |
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$this->definitions = $definitions; |
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} |
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public function get($id) |
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{ |
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if ($this->hasValue($id)) { |
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return $this->values[$id]; |
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} |
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if (!$this->hasDefinition($id)) { |
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if ($this->classExists($id)) { |
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return $this->values[$id] = $this->autowire($id); |
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} |
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throw new DefinitionNotFoundException($id); |
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} |
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$def = $this->definitions[$id]; |
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if ($def instanceof Closure) { |
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return $this->values[$id] = $def($this); |
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} |
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return $this->values[$id] = $def; |
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} |
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public function set($id, $value): void |
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{ |
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$this->put($id, $value); |
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} |
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public function put($id, $value): void |
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{ |
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if ($this->hasValue($id)) { |
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$this->remove($id); |
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} |
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$this->definitions[$id] = $value; |
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} |
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public function has($id): bool |
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{ |
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return array_key_exists($id, $this->definitions) or $this->classExists($id); |
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} |
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private function remove($id): void |
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{ |
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unset($this->values[$id]); |
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} |
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private function hasDefinition($id): bool |
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{ |
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return array_key_exists($id, $this->definitions); |
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} |
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private function hasValue($id): bool |
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{ |
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return array_key_exists($id, $this->values); |
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} |
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private function classExists($name): bool |
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{ |
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return class_exists((string) $name); |
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} |
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/** |
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* @param $id |
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* @return object |
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* @throws ReflectionException |
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*/ |
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private function autowire($id): object |
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{ |
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$reflection = new ReflectionClass($id); |
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$arguments = []; |
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if (null !== ($constructor = $reflection->getConstructor())) { |
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foreach ($constructor->getParameters() as $param) { |
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$arguments[] = $this->getArgumentByParameter($param); |
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} |
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} |
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return $reflection->newInstanceArgs($arguments); |
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} |
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/** |
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* @param ReflectionParameter $param |
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* @return array|mixed |
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* @throws ReflectionException |
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*/ |
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private function getArgumentByParameter(ReflectionParameter $param) |
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{ |
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if ($paramClass = $param->getClass()) { |
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return $this->get($paramClass->getName()); |
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} elseif ($param->isArray()) { |
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return []; |
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} else { |
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if (!$param->isDefaultValueAvailable()) { |
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throw new DefinitionNotFoundException($param->getName()); |
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} |
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return $param->getDefaultValue(); |
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} |
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} |
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} |