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<?php |
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declare(strict_types=1); |
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namespace Ray\Di; |
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use Ray\Aop\Compiler; |
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use Ray\Aop\CompilerInterface; |
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use Ray\Aop\Pointcut; |
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use Ray\Di\Exception\Unbound; |
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use Ray\Di\Exception\Untargeted; |
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final class Container |
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{ |
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/** |
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* @var Dependency[] |
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*/ |
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private $container = []; |
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/** |
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* @var Pointcut[] |
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*/ |
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private $pointcuts = []; |
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public function __sleep() |
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{ |
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return ['container', 'pointcuts']; |
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} |
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/** |
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* Add binding to container |
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*/ |
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public function add(Bind $bind) |
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{ |
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$dependency = $bind->getBound(); |
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$dependency->register($this->container, $bind); |
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} |
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/** |
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* Add Pointcut to container |
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*/ |
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public function addPointcut(Pointcut $pointcut) |
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{ |
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$this->pointcuts[] = $pointcut; |
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} |
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/** |
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* Return instance by interface + name(interface namespace) |
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*/ |
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public function getInstance(string $interface, string $name) |
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{ |
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return $this->getDependency($interface . '-' . $name); |
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} |
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/** |
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* Return dependency injected instance |
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* |
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* @throws Unbound |
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*/ |
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public function getInstanceWithArgs(string $interface, string $name, array $params) |
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{ |
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$index = $interface . '-' . $name; |
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if (! isset($this->container[$index])) { |
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throw $this->unbound($index); |
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} |
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$dependency = $this->container[$index]; |
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return $dependency->injectWithArgs($this, $params); |
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} |
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/** |
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* Return dependency injected instance |
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* |
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* @throws Unbound |
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*/ |
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public function getDependency(string $index) |
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{ |
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if (! isset($this->container[$index])) { |
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throw $this->unbound($index); |
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} |
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$dependency = $this->container[$index]; |
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return $dependency->inject($this); |
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} |
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/** |
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* Rename existing dependency interface + name |
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*/ |
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public function move(string $sourceInterface, string $sourceName, string $targetInterface, string $targetName) |
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{ |
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$sourceIndex = $sourceInterface . '-' . $sourceName; |
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if (! isset($this->container[$sourceIndex])) { |
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throw $this->unbound($sourceIndex); |
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} |
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$targetIndex = $targetInterface . '-' . $targetName; |
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$this->container[$targetIndex] = $this->container[$sourceIndex]; |
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unset($this->container[$sourceIndex]); |
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} |
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/** |
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* Return Unbound exception |
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* |
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* @param string $index {interface}-{bind name} |
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* |
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* @return Unbound|Untargeted |
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*/ |
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public function unbound(string $index) |
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{ |
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list($class, $name) = explode('-', $index); |
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if (class_exists($class) && ! (new \ReflectionClass($class))->isAbstract()) { |
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return new Untargeted($class); |
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} |
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return new Unbound("{$class}-{$name}"); |
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} |
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/** |
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* Return container |
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* |
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* @return Dependency[] |
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*/ |
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public function getContainer() : array |
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{ |
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return $this->container; |
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} |
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/** |
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* Return pointcuts |
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* |
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* @return Pointcut[] |
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*/ |
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public function getPointcuts() : array |
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{ |
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return $this->pointcuts; |
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} |
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/** |
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* Merge container |
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*/ |
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public function merge(self $container) |
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{ |
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$this->container += $container->getContainer(); |
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$this->pointcuts = array_merge($this->pointcuts, $container->getPointcuts()); |
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} |
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/** |
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* Weave aspects to all dependency in container |
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*/ |
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public function weaveAspects(CompilerInterface $compiler) |
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{ |
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foreach ($this->container as $dependency) { |
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if (! $dependency instanceof Dependency) { |
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continue; |
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} |
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$dependency->weaveAspects($compiler, $this->pointcuts); |
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} |
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} |
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/** |
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* Weave aspect to single dependency |
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*/ |
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public function weaveAspect(Compiler $compiler, Dependency $dependency) : self |
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{ |
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$dependency->weaveAspects($compiler, $this->pointcuts); |
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return $this; |
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} |
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} |
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ray-di /
Ray.Di
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: