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<?php |
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/** |
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* @copyright Daniel Król <[email protected]> |
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* @license MIT |
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* @package Mleko\Alchemist |
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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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declare(strict_types=1); |
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namespace Mleko\Alchemist; |
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class Type |
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{ |
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private const PATTERN = "#^(?P<generic>(?P<baseType>(?:(?:[a-zA-Z_]+)(?:(?:\\\\[a-zA-Z0-9_]+)*)))(?:<(?P<genericList>(?:\\s*(?&generic)(?:\\s*,\\s*(?&generic))*))\\s*>)?)$#"; |
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private const OPEN_PATTERN = "#^(?P<generic>(?P<baseType>(?:(?:[a-zA-Z_]+)(?:(?:\\\\[a-zA-Z0-9_]+)*)))(?:<(?P<genericList>(?:\\s*(?&generic)(?:\\s*,\\s*(?&generic))*))\\s*>)?)#"; |
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/** @var string */ |
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private $name; |
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/** @var Type[] */ |
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private $subTypes; |
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/** |
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* Type constructor. |
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* @param string $name |
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* @param Type[] $subTypes |
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*/ |
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public function __construct(string $name, array $subTypes = []) { |
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foreach ($subTypes as $type) { |
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// kinda hacky way to trigger \TypeError, without IDE screaming about unhandled Exception |
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$this->typeCheck($type); |
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} |
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$this->name = $name; |
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$this->subTypes = $subTypes; |
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} |
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public static function fromString(string $type): Type { |
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if (1 !== \preg_match(self::PATTERN, $type, $matches)) { |
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throw new \InvalidArgumentException("Malformed type provided: " . $type); |
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} |
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$generics = []; |
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if(isset($matches['genericList'])) { |
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$generics = self::parseGenericList(trim($matches['genericList'])); |
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} |
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return new Type($matches['baseType'], $generics); |
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} |
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public static function fromValue($value): Type { |
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return new Type(is_object($value) ? get_class($value) : gettype($value)); |
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} |
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private static function parseGenericList($genericList) { |
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$generics = []; |
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while($genericList) { |
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if (1 !== \preg_match(self::OPEN_PATTERN, $genericList, $matches)) { |
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throw new \InvalidArgumentException("Malformed subType provided: " . $genericList); |
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} |
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$generics[] = self::fromString($matches["generic"]); |
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$genericList = ltrim(substr($genericList, strlen($matches["generic"]))); |
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if ($genericList) { |
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if (\substr($genericList, 0, 1) !== ",") { |
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throw new \InvalidArgumentException("Malformed subType provided: " . $genericList); |
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} |
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$genericList = ltrim(\substr($genericList, 1)); |
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} |
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} |
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return $generics; |
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} |
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public function getName(): string { |
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return $this->name; |
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} |
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/** |
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* @return Type[] |
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*/ |
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public function getSubTypes(): array { |
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return $this->subTypes; |
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} |
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public function __toString() { |
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return $this->getName() . ($this->getSubTypes() ? "<" . \implode(", ", \array_map("strval", $this->getSubTypes())) . ">" : ""); |
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} |
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private function typeCheck(Type $type) { |
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// noop |
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} |
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} |
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mleko /
alchemist
This check looks for parameters that have been defined for a function or method, but which are not used in the method body.