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<?php |
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/** |
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* Sourcing by protobuf |
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* User: moyo |
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* Date: 2018/6/4 |
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* Time: 10:48 AM |
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*/ |
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namespace Carno\Validator\Sourcing; |
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use Carno\Validator\Chips\SVChecker; |
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use Carno\Validator\Contracts\Sourcing; |
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use Carno\Validator\Exception\IllegalNestedRuleExprException; |
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use Carno\Validator\Exception\UnknownNestedTypeException; |
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use Carno\Validator\Valid\Executor; |
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use Google\Protobuf\Internal\Message; |
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use Google\Protobuf\Internal\RepeatedField; |
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use Throwable; |
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class Protobuf implements Sourcing |
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{ |
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use SVChecker; |
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private const WK_SCALAR = 2; |
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private const WK_ITERATE = 4; |
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/** |
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* @param Executor $executor |
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* @param Message $input |
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* @throws Throwable |
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*/ |
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public function validating(Executor $executor, $input) |
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{ |
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foreach ($executor->rules() as $field => $rule) { |
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list($type, $data) = $this->walking($field, $input); |
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if ($type === self::WK_SCALAR) { |
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$this->checking($rule, $data); |
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} elseif ($type === self::WK_ITERATE) { |
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if (empty($data)) { |
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$this->checking($rule, null); |
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} else { |
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foreach ($data as $getter) { |
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$this->checking($rule, $getter()); |
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} |
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} |
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} |
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} |
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} |
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/** |
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* @param string $field |
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* @param Message $input |
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* @return array |
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*/ |
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private function walking(string $field, Message $input) : array |
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{ |
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if (count($parts = explode('.', $field)) > 1) { |
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// has nested field |
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$part = array_shift($parts); |
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$nested = $this->pbGet($input, $part); |
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if ($nested instanceof Message) { |
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return $this->walking(implode('.', $parts), $nested); |
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} elseif ($nested instanceof RepeatedField) { |
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if (array_shift($parts) !== '*') { |
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throw new IllegalNestedRuleExprException; |
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} |
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$iterates = []; |
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foreach ($nested as $data) { |
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$iterates[] = function () use ($parts, $data) { |
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return $data instanceof Message |
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? $this->walking(implode('.', $parts), $data)[1] |
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: $data |
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; |
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}; |
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} |
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return [self::WK_ITERATE, $iterates]; |
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} elseif (is_null($nested)) { |
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// maybe nested is message and have no data present |
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return [self::WK_SCALAR, null]; |
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} else { |
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throw new UnknownNestedTypeException; |
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} |
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} else { |
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// direct val getting |
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return [self::WK_SCALAR, $this->pbGet($input, $field)]; |
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} |
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} |
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/** |
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* @param Message $payload |
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* @param string $field |
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* @return mixed |
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*/ |
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private function pbGet(Message $payload, string $field) |
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{ |
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return call_user_func([$payload, sprintf('get%s', ucfirst($field))]); |
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} |
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} |
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