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<?php |
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namespace ntentan\panie; |
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/** |
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* Description of Container |
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* |
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* @author ekow |
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*/ |
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class InjectionContainer |
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{ |
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private static $bindings; |
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private static $singletons = []; |
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/** |
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* |
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* @param string|\ReflectionClass $class |
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* @return \ReflectionClass |
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*/ |
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public static function getResolvedClassName($class) |
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{ |
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$bound = null; |
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if(self::getBindings()->has($class)) { |
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$bound = self::$bindings->get($class); |
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} |
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else if(is_string($class) && class_exists($class)) { |
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$bound = $class; |
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} |
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return $bound; |
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} |
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private static function getBindings() |
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{ |
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if(!self::$bindings) self::$bindings = new Bindings (); |
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return self::$bindings; |
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} |
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public static function bind($lose) |
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{ |
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return self::getBindings()->setActiveKey($lose); |
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} |
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public static function singleton($type, $constructorArguments = []) |
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{ |
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if(!isset(self::$singletons[$type])) { |
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self::$singletons[$type] = self::resolve($type, $constructorArguments); |
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} |
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return self::$singletons[$type]; |
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} |
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public static function resolve($type, $constructorArguments = []) |
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{ |
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$resolvedClass = self::getResolvedClassName($type); |
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if($resolvedClass=== null) { |
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throw new exceptions\ResolutionException("Could not resolve dependency $type"); |
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} |
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$reflection = new \ReflectionClass($resolvedClass); |
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if($reflection->isAbstract()) { |
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throw new exceptions\ResolutionException( |
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"Abstract class {$reflection->getName()} cannot be instantiated. " |
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. "Please provide a binding to an implementation." |
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); |
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} |
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$constructor = $reflection->getConstructor(); |
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$instanceParameters = []; |
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if($constructor != null) { |
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$parameters = $constructor->getParameters(); |
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foreach($parameters as $parameter) { |
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$class = $parameter->getClass(); |
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if(isset($constructorArguments[$parameter->getName()])) { |
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$instanceParameters[] = $constructorArguments[$parameter->getName()]; |
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} else { |
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$instanceParameters[] = $class ? self::resolve($class->getName()) : null; |
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} |
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} |
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} |
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return $reflection->newInstanceArgs($instanceParameters); |
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} |
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public static function reset() |
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{ |
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self::resetBindings(); |
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self::resetSingletons(); |
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} |
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public static function resetBindings() |
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{ |
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self::$bindings = null; |
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} |
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public static function resetSingletons() |
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{ |
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self::$singletons = []; |
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} |
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} |
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ntentan /
panie
