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<?php |
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/** |
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* Created by rozbo at 2017/3/17 上午10:37 |
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* 容器类 |
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*/ |
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namespace puck; |
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use ArrayAccess; |
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class Container implements ArrayAccess |
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{ |
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// 容器对象实例 |
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protected static $instance; |
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// 容器中的对象实例 |
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protected $instances=[]; |
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// 容器中绑定的对象标识 |
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protected $bind=[]; |
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/** |
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* 获取当前容器的实例（单例） |
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* @access public |
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* @return \puck\Container |
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*/ |
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public static function getInstance() |
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{ |
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if (is_null(static::$instance)) { |
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static::$instance=new static; |
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} |
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return static::$instance; |
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} |
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/** |
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* 设置共享容器实例 |
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* @param ArrayAccess $container |
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* @return static |
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*/ |
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public static function setInstance(ArrayAccess $container) |
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{ |
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return static::$instance=$container; |
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} |
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/** |
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* 绑定一个类到容器 |
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* @access public |
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* @param string $abstract 类标识、接口 |
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* @param string|\Closure $concrete 要绑定的类或者闭包 |
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* @return void |
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*/ |
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public function bind($abstract, $concrete=null) |
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{ |
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if (is_array($abstract)) { |
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$this->bind=array_merge($this->bind, $abstract); |
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} else { |
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$this->bind[$abstract]=$concrete; |
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} |
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} |
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/** |
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* 绑定一个类实例当容器 |
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* @access public |
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* @param string $abstract 类名或者标识 |
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* @param object $instance 类的实例 |
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* @return void |
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*/ |
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public function instance($abstract, $instance) |
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{ |
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$this->instances[$abstract]=$instance; |
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} |
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/** |
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* 判断容器中是否存在类及标识 |
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* @access public |
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* @param string $abstract 类名或者标识 |
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* @return bool |
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*/ |
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public function bound($abstract) |
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{ |
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return isset($this->bind[$abstract]) || isset($this->instances[$abstract]); |
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} |
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/** |
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* 创建类的实例 |
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* @access public |
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* @param array $vars 变量 |
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* @return object |
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*/ |
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public function make($abstract, $vars=[]) |
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{ |
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if (isset($this->instances[$abstract])) { |
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$object=$this->instances[$abstract]; |
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} elseif (isset($this->bind[$abstract])) { |
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$concrete=$this->bind[$abstract]; |
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if ($concrete instanceof \Closure) { |
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$object=call_user_func_array($concrete, $vars); |
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} else { |
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$object=$this->make($concrete, $vars); |
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} |
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} else { |
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$object=$this->invokeClass($abstract, $vars); |
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$this->instances[$abstract]=$object; |
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} |
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return $object; |
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} |
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/** |
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* 执行函数或者闭包方法 支持参数调用 |
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* @access public |
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* @param \Closure $function 函数或者闭包 |
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* @param array $vars 变量 |
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* @return mixed |
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*/ |
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public function invokeFunction($function, $vars=[]) |
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{ |
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$reflect=new \ReflectionFunction($function); |
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$args=$this->bindParams($reflect, $vars); |
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return $reflect->invokeArgs($args); |
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} |
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/** |
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* 调用反射执行类的方法 支持参数绑定 |
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* @access public |
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* @param string|array $method 方法 |
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* @param array $vars 变量 |
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* @return mixed |
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*/ |
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public function invokeMethod($method, $vars=[]) |
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{ |
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if (is_array($method)) { |
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$class=is_object($method[0]) ? $method[0] : $this->invokeClass($method[0]); |
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$reflect=new \ReflectionMethod($class, $method[1]); |
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} else { |
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// 静态方法 |
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$reflect=new \ReflectionMethod($method); |
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} |
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$args=$this->bindParams($reflect, $vars); |
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return $reflect->invokeArgs(isset($class) ? $class : null, $args); |
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} |
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/** |
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* 调用反射执行callable 支持参数绑定 |
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* @access public |
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* @param mixed $callable |
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* @param array $vars 变量 |
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* @return mixed |
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*/ |
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public function invoke($callable, $vars=[]) |
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{ |
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if ($callable instanceof \Closure) { |
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$result=$this->invokeFunction($callable, $vars); |
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} else { |
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$result=$this->invokeMethod($callable, $vars); |
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} |
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return $result; |
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} |
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/** |
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* 调用反射执行类的实例化 支持依赖注入 |
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* @access public |
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* @param string $class 类名 |
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* @param array $vars 变量 |
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* @return mixed |
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*/ |
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public function invokeClass($class, $vars=[]) |
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{ |
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$reflect=new \ReflectionClass($class); |
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$constructor=$reflect->getConstructor(); |
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if ($constructor) { |
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$args=$this->bindParams($constructor, $vars); |
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} else { |
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$args=[]; |
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} |
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return $reflect->newInstanceArgs($args); |
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} |
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/** |
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* 绑定参数 |
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* @access protected |
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* @param \ReflectionMethod|\ReflectionFunction $reflect 反射类 |
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* @param array $vars 变量 |
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* @return array |
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*/ |
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protected function bindParams($reflect, $vars=[]) |
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{ |
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$args=[]; |
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if ($reflect->getNumberOfParameters() > 0) { |
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// 判断数组类型 数字数组时按顺序绑定参数 |
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reset($vars); |
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$type=key($vars) === 0 ? 1 : 0; |
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$params=$reflect->getParameters(); |
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foreach ($params as $param) { |
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$name=$param->getName(); |
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$class=$param->getClass(); |
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if ($class) { |
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$className=$class->getName(); |
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$args[]=$this->make($className); |
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} elseif (1 == $type && !empty($vars)) { |
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$args[]=array_shift($vars); |
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} elseif (0 == $type && isset($vars[$name])) { |
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$args[]=$vars[$name]; |
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} elseif ($param->isDefaultValueAvailable()) { |
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$args[]=$param->getDefaultValue(); |
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} else { |
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throw new \InvalidArgumentException('method param miss:'.$name); |
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} |
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} |
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} |
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return $args; |
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} |
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public function offsetExists($key) |
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{ |
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return $this->bound($key); |
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} |
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public function offsetGet($key) |
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{ |
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return $this->make($key); |
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} |
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public function offsetSet($key, $value) |
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{ |
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$this->bind($key, $value); |
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} |
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public function offsetUnset($key) |
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{ |
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$this->__unset($key); |
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} |
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public function __set($name, $value) |
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{ |
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$this->bind($name, $value); |
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} |
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public function __get($name) |
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{ |
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return $this->make($name); |
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} |
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public function __isset($name) |
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{ |
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return $this->bound($name); |
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} |
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public function __unset($name) |
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{ |
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unset($this->bind[$name], $this->instances[$name]); |
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} |
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} |
Rozbo /
puck
