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<?php
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namespace Aidphp\Di;
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use Psr\Container\ContainerInterface;
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use Psr\Container\ContainerExceptionInterface;
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use ReflectionClass;
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use ReflectionMethod;
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use ReflectionException;
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class Container implements ContainerInterface
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{
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protected $definitions = [];
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protected $factories = [];
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protected $instances = [];
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public function define(string $id, string $class = null, array $params = [], bool $shared = true): self
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{
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unset($this->instances[$id], $this->factories[$id]);
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$this->definitions[$id] = [$class ?? $id, $params, $shared];
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return $this;
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}
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public function delegate(string $id, callable $factory, bool $shared = true): self
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{
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unset($this->instances[$id], $this->factories[$id]);
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$this->factories[$id] = [$factory, $shared];
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return $this;
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}
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public function get($id)
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{
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if (isset($this->instances[$id]))
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{
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return $this->instances[$id];
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}
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if (! isset($this->factories[$id]))
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{
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$this->factories[$id] = isset($this->definitions[$id])
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? [$this->createFactory($this->definitions[$id][0], $this->definitions[$id][1]), $this->definitions[$id][2]]
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: [$this->createFactory($id), false];
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}
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$instance = $this->factories[$id][0]($this);
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if ($this->factories[$id][1])
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{
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$this->instances[$id] = $instance;
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}
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return $instance;
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}
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public function has($id): bool
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{
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return isset($this->instances[$id])
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|| isset($this->factories[$id])
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|| isset($this->definitions[$id])
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|| class_exists($id);
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}
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protected function createFactory(string $class, array $params = []): callable
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{
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try
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{
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$refClass = new ReflectionClass($class);
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}
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catch (ReflectionException $e)
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{
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throw new NotFoundException($class);
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}
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if (! $refClass->isInstantiable())
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{
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throw new ContainerException('The class "' . $refClass->name . '" can not be instantiate');
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}
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if (null !== ($refMethod = $refClass->getConstructor()))
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{
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$resolver = $this->getArgsResolver($refMethod, $params);
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$factory = function ($dic) use ($class, $resolver) {return new $class(...$resolver($dic));};
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}
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else
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{
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$factory = function ($dic) use ($class) {return new $class;};
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}
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return $factory;
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}
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protected function getArgsResolver(ReflectionMethod $method, array $params = []): callable
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{
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$paramsInfo = [];
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foreach ($method->getParameters() as $param)
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{
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$paramsInfo[] = [
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($class = $param->getClass()) ? $class->name : null,
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$param
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];
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}
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return function ($dic) use ($paramsInfo, $params) {
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$values = [];
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foreach ($paramsInfo as [$class, $param])
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{
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if ($class)
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{
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try
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{
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$values[] = $dic->get($class);
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}
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catch (ContainerExceptionInterface $e)
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{
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if (! $param->allowsNull())
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{
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throw new ParameterNotFoundException($param, $e);
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}
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$values[] = null;
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}
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}
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elseif ($params)
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{
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$values[] = array_shift($params);
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}
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elseif ($param->isOptional())
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{
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$values[] = $param->isDefaultValueAvailable() ? $param->getDefaultValue() : null;
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}
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else
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{
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1 |
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throw new ParameterNotFoundException($param);
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}
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}
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return $values;
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};
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}
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} |
aidphp /
di
AID PC
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.