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<?php |
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namespace PHPWatch\SimpleContainer; |
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use ArrayAccess; |
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use PHPWatch\SimpleContainer\Exception\BadMethodCallException; |
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use PHPWatch\SimpleContainer\Exception\NotFoundException; |
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use Psr\Container\ContainerInterface; |
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use function array_key_exists; |
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use function is_callable; |
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use function sprintf; |
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class Container implements ArrayAccess, ContainerInterface { |
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private array $definitions; |
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private array $generated = []; |
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private array $protected = []; |
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private array $factories = []; |
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public function __construct(array $definitions = []) { |
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$this->definitions = $definitions; |
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} |
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private function getService(string $id) { |
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if (!$this->has($id)) { |
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throw new NotFoundException(sprintf('Container key "%s" is not defined', $id)); |
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} |
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if (array_key_exists($id, $this->generated)) { |
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return $this->generated[$id]; |
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} |
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if (!is_callable($this->definitions[$id]) || isset($this->protected[$id])) { |
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return $this->definitions[$id]; |
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} |
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if (isset($this->factories[$id])) { |
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return $this->definitions[$id]($this); |
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} |
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return $this->generated[$id] = $this->definitions[$id]($this); |
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} |
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public function set(string $id, $value): void { |
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if (array_key_exists($id, $this->definitions)) { |
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unset($this->generated[$id], $this->factories[$id], $this->protected[$id]); |
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} |
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$this->definitions[$id] = $value; |
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} |
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public function setProtected(string $id, ?callable $value = null): void { |
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if ($value === null) { |
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$value = $this->getDefaultDefinition($id, sprintf('Attempt to set container ID "%s" as protected, but it is not already set nor provided in the function call.', $id)); |
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} |
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$this->set($id, $value); |
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$this->protected[$id] = true; |
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} |
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public function setFactory(string $id, ?callable $value = null): void { |
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if ($value === null) { |
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$value = $this->getDefaultDefinition($id, sprintf('Attempt to set container ID "%s" as factory, but it is not already set nor provided in the function call', $id)); |
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} |
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$this->set($id, $value); |
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$this->factories[$id] = true; |
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} |
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private function getDefaultDefinition(string $id, string $exception_message): callable { |
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if (!$this->has($id)) { |
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throw new BadMethodCallException($exception_message); |
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} |
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if (!is_callable($this->definitions[$id])) { |
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throw new BadMethodCallException(sprintf('Definition for "%s" expected to be a callable, "%s" found', $id, \gettype($this->definitions[$id]))); |
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} |
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return $this->definitions[$id]; |
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} |
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public function offsetSet($id, $value): void { |
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$this->set($id, $value); |
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} |
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public function offsetUnset($id): void { |
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unset($this->definitions[$id], $this->generated[$id], $this->factories[$id], $this->protected[$id]); |
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} |
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public function offsetExists($id): bool { |
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return array_key_exists($id, $this->definitions); |
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} |
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public function offsetGet($id) { |
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return $this->getService($id); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function get($id) { |
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return $this->getService($id); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function has($id): bool { |
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return array_key_exists($id, $this->definitions); |
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} |
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} |
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PHPWatch /
simple-container
