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<?php |
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|
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namespace FluentForm\Framework\Foundation; |
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|
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use Closure; |
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use Exception; |
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use ArrayAccess; |
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use ReflectionClass; |
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use ReflectionParameter; |
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use FluentForm\Framework\Exception\UnResolveableEntityException; |
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|
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class Container implements ArrayAccess |
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{ |
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/** |
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* $container The service container |
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* @var array |
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*/ |
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protected static $container = array( |
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'facades' => array(), |
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'aliases' => array(), |
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'resolved' => array(), |
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'bindings' => array(), |
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'singletons' => array(), |
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); |
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|
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/** |
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* Bind an instance into service container |
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* @param string $key identifier |
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* @param mixed $concrete |
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* @param string $facade [optional facade] |
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* @param string $alias [optional alias] |
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* @return void |
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*/ |
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public function bind($key, $concrete = null, $facade = null, $alias = null, $shared = false) |
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{ |
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$concrete = is_null($concrete) ? $key : $concrete; |
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|
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if (!$shared) { |
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static::$container['bindings'][$key] = $concrete; |
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} else { |
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static::$container['singletons'][$key] = $concrete; |
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if ($this->resolved($key)) { |
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$this->clearResolved($key); |
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} |
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} |
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|
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if ($facade) { |
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$this->facade($key, $facade); |
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} |
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|
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if ($alias) { |
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$this->alias($key, $alias); |
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} |
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} |
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|
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/** |
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* Bind a singleton instance into service container |
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* @param string $key identifier |
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* @param mixed $concrete |
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* @param string $facade [optional facade] |
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* @param string $alias [optional alias] |
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* @return void |
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*/ |
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public function bindSingleton($key, $concrete = null, $facade = null, $alias = null) |
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{ |
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$this->bind($key, $concrete, $facade, $alias, true); |
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} |
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|
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/** |
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* Bind a singleton instance into service container |
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* @param string $key identifier |
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* @param mixed $concrete |
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* @param string $facade [optional facade] |
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* @param string $alias [optional alias] |
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* @return void |
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*/ |
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public function bindInstance($key, $concrete, $facade = null, $alias = null) |
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{ |
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$this->bind($key, function() use ($concrete) { |
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return $concrete; |
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}, $facade, $alias, true); |
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} |
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|
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/** |
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* Register a facade for a registered instance |
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* @param string $key |
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* @param string $facade |
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* @return string |
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*/ |
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public function facade($key, $facade) |
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{ |
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static::$container['facades'][$facade] = $key; |
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} |
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|
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/** |
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* Register an alias for a registered instance |
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* @param string $key |
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* @param string $alias |
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* @return string |
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*/ |
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public function alias($key, $aliases) |
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{ |
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foreach ((array) $aliases as $alias) { |
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static::$container['aliases'][$alias] = $key; |
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} |
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} |
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|
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/** |
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* Resolve an instance from container |
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* @param string $key |
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* @return mixed |
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* @throws \FluentForm\Framework\Exception\UnResolveableEntityException |
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*/ |
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public function make($key = null, array $params = []) |
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{ |
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if (is_null($key)) { |
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return AppFacade::getApplication(); |
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} |
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|
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$key = $this->getAlias($key); |
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|
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if (isset(static::$container['resolved'][$key])) { |
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return static::$container['resolved'][$key]; |
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} |
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|
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if (isset(static::$container['singletons'][$key])) { |
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return static::$container['resolved'][$key] = $this->resolve( |
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static::$container['singletons'][$key], $params |
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); |
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} |
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|
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if (isset(static::$container['bindings'][$key])) { |
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return $this->resolve(static::$container['bindings'][$key], $params); |
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} |
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|
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if ($this->classExists($key)) { |
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return $this->resolve($key, $params); |
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} |
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|
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throw new UnResolveableEntityException('The service ['.$key.'] doesn\'t exist.'); |
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} |
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|
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/** |
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* Resolve an item from the container |
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* @param mixed $value |
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* @return mixed |
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*/ |
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protected function resolve($value, $params = []) |
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{ |
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if ($value instanceof Closure) { |
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return $value($this, $params); |
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} |
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|
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return $this->build($value, $params); |
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} |
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|
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/** |
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* Build a concrete class with all dependencies |
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* @param string $value FQN class name |
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* @return mixed resolved instance |
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*/ |
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protected function build($value, $params = []) |
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{ |
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if (is_object($value)) return $value; |
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|
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$reflector = new ReflectionClass($value); |
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|
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if (!$reflector->isInstantiable()) { |
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throw new UnResolveableEntityException( |
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"The [$value] is not instantiable." |
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); |
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} |
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|
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if (!($constructor = $reflector->getConstructor())) { |
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return new $value; |
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} |
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|
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$dependencies = $params ? $params : $this->resolveDependencies( |
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$constructor->getParameters() |
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); |
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|
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return $reflector->newInstanceArgs($dependencies); |
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} |
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|
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/** |
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* Resolve all dependencies of a single class |
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* @param array $dependencies Constructor Parameters |
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* @return array An array of all the resolved dependencies of one class |
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*/ |
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protected function resolveDependencies(array $dependencies) |
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{ |
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$results = []; |
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|
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foreach ($dependencies as $dependency) { |
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$results[] = $this->resolveClass($dependency); |
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} |
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|
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return $results; |
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} |
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|
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/** |
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* Resolves a single class instance |
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* @param ReflectionParameter $parameter |
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* @return mixed |
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* @throws Exception |
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*/ |
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protected function resolveClass(ReflectionParameter $parameter) |
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{ |
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$types = ['bool', 'int', 'float', 'string', 'array', 'resource']; |
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|
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try { |
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if ($class = $this->getParameterType($parameter)) { |
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|
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if($class instanceof \ReflectionType) { |
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$class = (string) $class; |
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return $this->make($class); |
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} |
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|
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$class = $class->getName(); |
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if ($class && in_array($class, $types)) { |
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$class = null; |
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} |
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} |
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|
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if ($class) { |
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return $this->make($class); |
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} |
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|
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throw new Exception("The [".$parameter->name."] is not instantiable."); |
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} catch (Exception $exception) { |
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if ($parameter->isOptional()) { |
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return $parameter->getDefaultValue(); |
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} elseif (!$class) { |
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$name = $parameter->getName(); |
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$cls = $parameter->getDeclaringClass(); |
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throw new UnResolveableEntityException( |
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"The [".$cls->name."] is not instantiable, $".$name." is required." |
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); |
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} |
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|
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throw $exception; |
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} |
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} |
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|
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/** |
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* Get the parameter type for the given parameter. |
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* |
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* @return object ReflectionClass|ReflectionNamedType |
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*/ |
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protected function getParameterType($parameter) |
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{ |
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if (method_exists($parameter, 'getType')) { |
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return $parameter->getType(); |
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} |
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|
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return $parameter->getClass(); |
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} |
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|
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/** |
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* Get the alias for a key if available. |
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* @param string $key |
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* @return string |
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*/ |
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public function getAlias($key) |
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{ |
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if (isset(static::$container['aliases'][$key])) { |
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return static::$container['aliases'][$key]; |
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} |
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|
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return $key; |
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} |
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|
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/** |
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* Check if a given class/interface exists |
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* @param string $key |
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* @return bool |
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*/ |
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protected function classExists($key) |
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{ |
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return is_string($key) && (class_exists($key) || interface_exists($key)); |
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} |
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|
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/** |
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* Check if an item exists at a given offset |
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* @param string $offset |
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* @return bool |
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*/ |
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public function bound($offset) |
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{ |
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return isset(static::$container['resolved'][$offset]) || |
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isset(static::$container['singletons'][$offset]) || |
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isset(static::$container['bindings'][$offset]); |
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} |
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|
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/** |
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* Check if an item exists at a given offset |
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* @param string $offset |
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* @return bool |
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*/ |
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public function has($offset) |
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{ |
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return $this->bound($offset); |
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} |
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|
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/** |
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* Check if an item exists at a given offset |
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* @param string $offset |
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* @return bool |
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*/ |
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public function offsetExists($offset) |
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{ |
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return $this->bound($offset); |
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} |
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|
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/** |
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* Get the value from given offset |
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* @param string $offset |
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* @param mixed $value |
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* @return void |
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*/ |
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public function offsetGet($offset) |
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{ |
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return $this->make($offset); |
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} |
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|
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/** |
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* Set the value at a given offset |
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* @param string $offset |
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* @param mixed $value |
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* @return void |
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*/ |
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public function offsetSet($offset, $value) |
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{ |
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$this->bindInstance($offset, $value); |
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} |
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|
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/** |
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* Unset the value at a given offset |
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* @param string $offset |
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* @return void |
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*/ |
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public function offsetUnset($offset) |
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{ |
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unset( |
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static::$container['bindings'][$offset], |
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static::$container['resolved'][$offset], |
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static::$container['singletons'][$offset] |
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); |
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|
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if(array_key_exists($offset, $aliases = array_flip(static::$container['aliases']))) { |
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unset(static::$container['aliases'][$aliases[$offset]]); |
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} |
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|
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if(array_key_exists($offset, $facades = array_flip(static::$container['facades']))) { |
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unset(static::$container['facades'][$facades[$offset]]); |
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} |
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} |
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|
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/** |
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* Determine whether a shared entity is resolved. |
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* @param string $key |
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* @return bool |
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*/ |
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public function resolved($key) |
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{ |
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return array_key_exists($key, static::$container['resolved']); |
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} |
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|
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/** |
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* Get one or all resolved instance(s) |
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* @param string $key |
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* @return mixed |
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*/ |
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public function getResolved($key = null) |
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{ |
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return static::$container['resolved']; |
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} |
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|
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/** |
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* Clear one or all resolved instance(s) |
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* @param string $key |
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* @return void |
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*/ |
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public function clearResolved($key = null) |
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{ |
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if (!$key) { |
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static::$container['resolved'] = []; |
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} else { |
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unset(static::$container['resolved'][$key]); |
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} |
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} |
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|
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/** |
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* Get one or all binding(s) |
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* @param string $key |
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* @return void |
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*/ |
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public function getBindings($key = null) |
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{ |
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return static::$container['bindings']; |
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} |
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|
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/** |
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* Clear one or all binding(s) |
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* @param string $key |
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* @return void |
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*/ |
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public function clearBindings($key = null) |
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{ |
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if (!$key) { |
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static::$container['bindings'] = []; |
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} else { |
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unset(static::$container['bindings'][$key]); |
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} |
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} |
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|
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/** |
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* Get one or all singletons(s) |
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* @param string $key |
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* @return void |
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*/ |
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public function getSingletons($key = null) |
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{ |
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return static::$container['singletons']; |
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} |
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|
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/** |
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* Clear one or all singletons(s) |
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* @param string $key |
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* @return void |
| 431 |
*/ |
| 432 |
public function clearSingletons($key = null) |
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{ |
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if (!$key) { |
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static::$container['singletons'] = []; |
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} else { |
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unset(static::$container['singletons'][$key]); |
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} |
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} |
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} |
