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<?php |
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/** |
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* slince dependency injection component |
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* @author Tao <[email protected]> |
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*/ |
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namespace Slince\Di; |
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use Slince\Di\Exception\DependencyInjectionException; |
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class ClassDefinitionResolver |
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{ |
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/** |
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* @var Container |
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*/ |
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protected $container; |
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/** |
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* @param Container $container |
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*/ |
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public function __construct($container) |
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{ |
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$this->container = $container; |
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} |
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/** |
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* @param ClassDefinition $definition |
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* @param array $arguments |
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* @return mixed |
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*/ |
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public function resolve(ClassDefinition $definition, $arguments = []) |
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{ |
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$arguments = array_replace($definition->getArguments(), $arguments); |
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try { |
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$reflection = new \ReflectionClass($definition->getClass()); |
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} catch (\ReflectionException $e) { |
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throw new DependencyInjectionException(sprintf('Class "%s" is invalid', $definition->getClass())); |
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} |
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if (!$reflection->isInstantiable()) { |
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throw new DependencyInjectionException(sprintf("Can not instantiate [%s]", $definition->getClass())); |
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} |
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$constructor = $reflection->getConstructor(); |
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if (is_null($constructor)) { |
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$instance = $reflection->newInstanceWithoutConstructor(); |
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} else { |
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$constructorArguments = $this->container->resolveFunctionArguments($constructor, $arguments, |
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$this->container->getContextBindings($definition->getClass(), $constructor->getName()) |
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); |
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$instance = $reflection->newInstanceArgs($constructorArguments); |
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} |
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$this->invokeMethods($definition, $instance, $reflection); |
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$this->invokeProperties($definition, $instance); |
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return $instance; |
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} |
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protected function invokeMethods(ClassDefinition $definition, $instance, \ReflectionClass $reflection) |
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{ |
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foreach ($definition->getMethodCalls() as $method => $methodArguments) { |
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try { |
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$reflectionMethod = $reflection->getMethod($method); |
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} catch (\ReflectionException $e) { |
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throw new DependencyInjectionException(sprintf( |
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"Class '%s' has no method '%s'", |
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$definition->getClass(), |
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$method |
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)); |
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} |
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$contextBindings = $this->container->getContextBindings($reflection->name, $method); |
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$reflectionMethod->invokeArgs($instance, $this->container->resolveFunctionArguments($reflectionMethod, |
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$methodArguments, $contextBindings |
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)); |
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} |
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} |
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protected function invokeProperties(ClassDefinition $definition, $instance) |
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{ |
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foreach ($definition->getProperties() as $propertyName => $propertyValue) { |
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if (property_exists($instance, $propertyName)) { |
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$instance->$propertyName = $propertyValue; |
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} else { |
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throw new DependencyInjectionException(sprintf( |
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"Class '%s' has no property '%s'", |
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$definition->getClass(), |
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$propertyName |
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)); |
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} |
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} |
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} |
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} |
slince /
di
