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<?php |
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namespace Kontrolio\Rules; |
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use UnexpectedValueException; |
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final class ArrayNormalizer |
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{ |
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private $parser; |
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public function __construct(Parser $parser) |
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{ |
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$this->parser = $parser; |
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} |
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/** |
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* Normalizes "raw" array of rules. |
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* |
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* This method turns the following array structure |
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* |
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* [ |
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* 'foo' => 'equal_to:foo|not_equal_to:bar', |
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* 'bar' => new EqualTo('foo'), |
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* 'qux' => static function ($value) { |
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* return $value === 'qux'; |
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* } |
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* ] |
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* |
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* to this one |
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* |
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* [ |
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* 'foo' => [ |
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* new EqualTo('foo'), |
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* new NotEqualTo('bar') |
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* ], |
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* 'bar' => [ |
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* new EqualTo('foo'), |
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* ], |
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* 'qux' => [ |
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* static function ($value) { |
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* return $value === 'qux'; |
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* } |
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* ] |
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* ] |
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* |
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* @param array $raw |
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* |
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* @return RuleInterface[][]|callable[][] |
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* @throws UnexpectedValueException |
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*/ |
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public function normalize(array $raw) |
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{ |
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$attributes = array_keys($raw); |
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$rules = array_map(function ($attribute) use ($raw) { |
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return $this->resolveRules($raw[$attribute]); |
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}, $attributes); |
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return array_combine($attributes, $rules); |
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} |
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/** |
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* Resolves rules from different formats. |
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* |
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* @param RuleInterface[]|callable[]|RuleInterface|callable|string $rules |
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* |
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* @return RuleInterface[] |
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* @throws UnexpectedValueException |
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*/ |
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private function resolveRules($rules) |
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{ |
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if (is_array($rules)) { |
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foreach ($rules as $rule) { |
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static::ensureType($rule); |
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} |
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return $rules; |
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} |
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if (is_string($rules)) { |
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return $this->parser->parse($rules); |
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} |
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static::ensureType($rules); |
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return [$rules]; |
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} |
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/** |
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* Checks rule for the proper type. |
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* |
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* @param mixed $rule |
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* @throws UnexpectedValueException |
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*/ |
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private static function ensureType($rule) |
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{ |
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if (!$rule instanceof RuleInterface && !is_callable($rule)) { |
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throw new UnexpectedValueException( |
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sprintf('Rule must implement `%s` or be callable.', RuleInterface::class) |
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); |
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} |
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} |
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} |
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franzose /
kontrolio
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