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<?php |
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namespace alkemann\h2l\util; |
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use Closure; |
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final class Container |
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{ |
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/** @var array<string, Closure> */ |
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private $_constructors = []; |
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/** @var array<string, bool> */ |
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private $_is_singleton = []; |
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/** @var array<string, object> */ |
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private $_singletons = []; |
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/** |
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* Set constructor callable for class creation |
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* |
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* @param string $name |
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* @param callable $constructor |
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*/ |
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public function __set(string $name, callable $constructor): void |
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{ |
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$this->_set_constructor($name, $constructor, false); |
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} |
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/** |
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* Set constructor callable for singleton creation |
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* |
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* @param string $name |
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* @param callable $constructor |
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*/ |
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public function singleton(string $name, callable $constructor): void |
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{ |
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$this->_set_constructor($name, $constructor, true); |
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} |
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/** |
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* @param string $name |
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* @param callable $constructor |
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* @param bool $is_singleton |
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*/ |
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private function _set_constructor(string $name, callable $constructor, bool $is_singleton): void |
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{ |
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if ($constructor instanceof Closure) { |
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$closure = $constructor; |
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} else { |
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$closure = Closure::fromCallable($constructor); |
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} |
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$this->_constructors[$name] = $closure; |
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$this->_is_singleton[$name] = $is_singleton; |
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} |
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/** |
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* Check if there is a constructor for `$name` |
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* |
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* @param string $name |
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* @return bool |
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*/ |
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public function __isset(string $name): bool |
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{ |
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return (isset($this->_constructors[$name]) && $this->_constructors[$name] instanceof Closure); |
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} |
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/** |
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* Magic method for creating new objects or grabbing singleton |
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* |
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* @param string $name |
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* @return object |
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*/ |
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public function __get(string $name): object |
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{ |
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return $this->_call_or_return($name); |
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} |
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/** |
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* Magic method for creating new objects or grabbing singleton, allows for args |
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* |
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* @param string $name |
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* @param array<int, mixed> $args |
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* @return object |
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*/ |
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public function __call(string $name, array $args): object |
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{ |
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return $this->_call_or_return($name, $args); |
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} |
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/** |
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* @param string $name |
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* @param null|array<int, mixed> $args |
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*/ |
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private function _call_or_return(string $name, ?array $args = null): object |
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{ |
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if (isset($this->_constructors[$name]) == false) { |
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throw new \Exception("No constructor set for {$name}!"); |
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} |
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if ($this->_is_singleton[$name] && isset($this->_singletons[$name])) { |
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return $this->_singletons[$name]; |
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} |
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if ($args) { |
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array_unshift($args, $this); |
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$object = call_user_func_array($this->_constructors[$name], $args); |
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} else { |
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$object = $this->_constructors[$name]($this); |
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} |
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if ($this->_is_singleton[$name]) { |
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$this->_singletons[$name] = $object; |
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} |
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return $object; |
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} |
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} |
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alkemann /
h2l
When comparing two booleans, it is generally considered safer to use the strict comparison operator.