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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of the rybakit/arguments-resolver package. |
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* |
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* (c) Eugene Leonovich <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace ArgumentsResolver; |
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abstract class ArgumentsResolver |
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{ |
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/** |
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* @var \ReflectionFunctionAbstract |
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*/ |
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protected $reflection; |
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public function __construct($function) |
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{ |
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$this->reflection = $function instanceof \ReflectionFunctionAbstract |
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? $function |
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: ReflectionFactory::create($function); |
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} |
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/** |
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* Resolves function arguments. |
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* |
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* @param array $parameters |
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* |
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* @throws UnresolvableArgumentException |
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* @throws \ReflectionException |
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* |
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* @return array |
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*/ |
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public function resolve(array $parameters) : array |
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{ |
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if (!$number = $this->reflection->getNumberOfParameters()) { |
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return []; |
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} |
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$arguments = \array_fill(0, $number, null); |
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foreach ($this->getParameters() as $pos => $parameter) { |
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$result = $this->match($parameter, $parameters); |
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if ($result) { |
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$arguments[$pos] = $result[1]; |
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unset($parameters[$result[0]]); |
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continue; |
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} |
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if ($parameter->isDefaultValueAvailable()) { |
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$arguments[$pos] = $parameter->getDefaultValue(); |
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continue; |
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} |
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throw UnresolvableArgumentException::fromParameter($parameter); |
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} |
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return $arguments; |
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} |
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/** |
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* Returns an array of reflection parameters. |
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* |
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* @return \ReflectionParameter[] |
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*/ |
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protected function getParameters() : array |
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{ |
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return $this->reflection->getParameters(); |
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} |
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/** |
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* Returns the [key, value] pair if the parameter is matched or null otherwise. |
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* |
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* @param \ReflectionParameter $parameter |
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* @param array $parameters |
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* |
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* @return array|null |
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*/ |
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abstract protected function match(\ReflectionParameter $parameter, array $parameters) : ?array; |
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} |
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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.