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<?php |
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namespace Illuminate\Container; |
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use Closure; |
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use Illuminate\Contracts\Container\BindingResolutionException; |
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use InvalidArgumentException; |
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use ReflectionFunction; |
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use ReflectionMethod; |
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class BoundMethod |
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{ |
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/** |
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* Call the given Closure / class@method and inject its dependencies. |
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* |
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* @param \Illuminate\Container\Container $container |
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* @param callable|string $callback |
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* @param array $parameters |
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* @param string|null $defaultMethod |
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* @return mixed |
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* |
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* @throws \ReflectionException |
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* @throws \InvalidArgumentException |
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*/ |
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public static function call($container, $callback, array $parameters = [], $defaultMethod = null) |
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{ |
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if (is_string($callback) && ! $defaultMethod && method_exists($callback, '__invoke')) { |
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$defaultMethod = '__invoke'; |
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} |
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if (static::isCallableWithAtSign($callback) || $defaultMethod) { |
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return static::callClass($container, $callback, $parameters, $defaultMethod); |
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} |
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return static::callBoundMethod($container, $callback, function () use ($container, $callback, $parameters) { |
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return $callback(...array_values(static::getMethodDependencies($container, $callback, $parameters))); |
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}); |
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} |
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/** |
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* Call a string reference to a class using Class@method syntax. |
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* |
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* @param \Illuminate\Container\Container $container |
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* @param string $target |
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* @param array $parameters |
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* @param string|null $defaultMethod |
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* @return mixed |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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protected static function callClass($container, $target, array $parameters = [], $defaultMethod = null) |
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{ |
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$segments = explode('@', $target); |
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// We will assume an @ sign is used to delimit the class name from the method |
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// name. We will split on this @ sign and then build a callable array that |
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// we can pass right back into the "call" method for dependency binding. |
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$method = count($segments) === 2 |
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? $segments[1] : $defaultMethod; |
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if (is_null($method)) { |
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throw new InvalidArgumentException('Method not provided.'); |
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} |
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return static::call( |
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$container, [$container->make($segments[0]), $method], $parameters |
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); |
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} |
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/** |
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* Call a method that has been bound to the container. |
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* |
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* @param \Illuminate\Container\Container $container |
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* @param callable $callback |
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* @param mixed $default |
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* @return mixed |
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* |
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* @throws \ReflectionException |
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*/ |
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protected static function callBoundMethod($container, $callback, $default) |
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{ |
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if (! is_array($callback)) { |
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return Util::unwrapIfClosure($default); |
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} |
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// Here we need to turn the array callable into a Class@method string we can use to |
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// examine the container and see if there are any method bindings for this given |
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// method. If there are, we can call this method binding callback immediately. |
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$method = static::normalizeMethod($callback); |
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if ($container->hasMethodBinding($method)) { |
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$reflectDefault = new ReflectionFunction($default); |
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return $container->callMethodBinding( |
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$method, |
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$callback[0], |
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$reflectDefault->getStaticVariables()['parameters'] |
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); |
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} |
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return Util::unwrapIfClosure($default); |
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} |
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/** |
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* Normalize the given callback into a Class@method string. |
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* |
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* @param callable $callback |
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* @return string |
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*/ |
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protected static function normalizeMethod($callback) |
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{ |
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$class = is_string($callback[0]) ? $callback[0] : get_class($callback[0]); |
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return "{$class}@{$callback[1]}"; |
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} |
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/** |
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* Get all dependencies for a given method. |
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* |
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* @param \Illuminate\Container\Container $container |
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* @param callable|string $callback |
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* @param array $parameters |
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* @return array |
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* |
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* @throws \ReflectionException |
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*/ |
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protected static function getMethodDependencies($container, $callback, array $parameters = []) |
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{ |
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$dependencies = []; |
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foreach (static::getCallReflector($callback)->getParameters() as $parameter) { |
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static::addDependencyForCallParameter($container, $parameter, $parameters, $dependencies); |
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} |
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return array_merge($dependencies, array_values($parameters)); |
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} |
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/** |
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* Get the proper reflection instance for the given callback. |
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* |
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* @param callable|string $callback |
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* @return \ReflectionFunctionAbstract |
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* |
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* @throws \ReflectionException |
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*/ |
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protected static function getCallReflector($callback) |
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{ |
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if (is_string($callback) && strpos($callback, '::') !== false) { |
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$callback = explode('::', $callback); |
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} elseif (is_object($callback) && ! $callback instanceof Closure) { |
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$callback = [$callback, '__invoke']; |
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} |
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return is_array($callback) |
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? new ReflectionMethod($callback[0], $callback[1]) |
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: new ReflectionFunction($callback); |
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} |
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/** |
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* Get the dependency for the given call parameter. |
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* |
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* @param \Illuminate\Container\Container $container |
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* @param \ReflectionParameter $parameter |
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* @param array $parameters |
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* @param array $dependencies |
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* @return void |
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* |
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* @throws \Illuminate\Contracts\Container\BindingResolutionException |
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*/ |
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protected static function addDependencyForCallParameter($container, $parameter, |
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array &$parameters, &$dependencies) |
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{ |
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if (array_key_exists($paramName = $parameter->getName(), $parameters)) { |
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$dependencies[] = $parameters[$paramName]; |
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unset($parameters[$paramName]); |
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} elseif (! is_null($className = Util::getParameterClassName($parameter))) { |
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if (array_key_exists($className, $parameters)) { |
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$dependencies[] = $parameters[$className]; |
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unset($parameters[$className]); |
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} else { |
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$dependencies[] = $container->make($className); |
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} |
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} elseif ($parameter->isDefaultValueAvailable()) { |
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$dependencies[] = $parameter->getDefaultValue(); |
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} elseif (! $parameter->isOptional() && ! array_key_exists($paramName, $parameters)) { |
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$message = "Unable to resolve dependency [{$parameter}] in class {$parameter->getDeclaringClass()->getName()}"; |
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throw new BindingResolutionException($message); |
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} |
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} |
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/** |
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* Determine if the given string is in Class@method syntax. |
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* |
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* @param mixed $callback |
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* @return bool |
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*/ |
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protected static function isCallableWithAtSign($callback) |
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{ |
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return is_string($callback) && strpos($callback, '@') !== false; |
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} |
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} |
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michael-rubel /
laravel-enhanced-container
