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ObjectFactory.php
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ObjectFactory.php
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<?php
/**
* Copyright (C) GrizzIT, Inc. All rights reserved.
* See LICENSE for license details.
*/
namespace Ulrack\ObjectFactory\Factory;
use Throwable;
use Ulrack\ObjectFactory\Common\ClassAnalyserInterface;
use Ulrack\ObjectFactory\Common\ObjectFactoryInterface;
use Ulrack\ObjectFactory\Exception\CanNotCreateObjectException;
use Ulrack\ObjectFactory\Exception\InvalidParameterTypeException;
class ObjectFactory implements ObjectFactoryInterface
{
/**
* Contains the class analyser.
*
* @var ClassAnalyserInterface
*/
private $classAnalyser;
/**
* Constructor.
*
* @param ClassAnalyserInterface $classAnalyser
*/
public function __construct(ClassAnalyserInterface $classAnalyser)
{
$this->classAnalyser = $classAnalyser;
}
/**
* Creates an instance of an object.
*
* @param string $class
* @param array $parameters
*
* @return object
*
* @throws CanNotCreateObjectException When the object can not be created.
*/
public function create(string $class, array $parameters): object
{
try {
$config = $this->classAnalyser->analyse($class);
} catch (Throwable $exception) {
throw new CanNotCreateObjectException(
$class,
[],
$parameters,
$exception
);
}
$invokeParameters = [];
foreach ($config as $parameterName => $parameterConfig) {
if (!isset($parameters[$parameterName])) {
if (!$parameterConfig['allowsNull']
&& !$parameterConfig['isOptional']) {
throw new CanNotCreateObjectException(
$class,
$parameterConfig,
$parameters
);
}
$invokeParameters[] = $parameterConfig['default'];
continue;
}
if ($parameterConfig['isVariadic']) {
$variadicParameters = [];
foreach ($parameters[$parameterName] as $variadicParameter) {
try {
$invokeParameters[] = $this->parameterByType(
$parameterConfig,
$variadicParameter
);
} catch (Throwable $exception) {
throw new CanNotCreateObjectException(
$class,
$parameterConfig,
$parameters,
$exception
);
}
}
continue;
}
try {
$invokeParameters[] = $this->parameterByType($parameterConfig, $parameters[$parameterName]);
} catch (Throwable $exception) {
throw new CanNotCreateObjectException(
$class,
$parameterConfig,
$parameters,
$exception
);
}
}
return new $class(...$invokeParameters);
}
/**
* Validates and creates objects by it's type.
*
* @param array $parameterConfig
* @param mixed $parameter
*
* @return mixed
*
* @throws InvalidParameterTypeException When the type can not be resolved.
*/
private function parameterByType(array $parameterConfig, $parameter)
{
if ($parameterConfig['builtin']) {
if (gettype(
$parameter
) === $parameterConfig['type']
|| $parameterConfig['type'] === 'mixed') {
return $parameter;
}
throw new InvalidParameterTypeException($parameterConfig, $parameter);
}
if (!is_a(
$parameter,
$parameterConfig['type']
)) {
if (is_array($parameter)) {
try {
return $this->create(
$parameter['class'],
$parameter['parameters'] ?? []
);
} catch (Throwable $exception) {
throw new InvalidParameterTypeException(
$parameterConfig,
$parameter,
$exception
);
}
}
throw new InvalidParameterTypeException($parameterConfig, $parameter);
}
return $parameter;
}
}