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Filename : TraceableValidator.php
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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Validator\Validator;

use Symfony\Component\Validator\Context\ExecutionContextInterface;
use Symfony\Contracts\Service\ResetInterface;

/**
 * Collects some data about validator calls.
 *
 * @author Maxime Steinhausser <maxime.steinhausser@gmail.com>
 */
class TraceableValidator implements ValidatorInterface, ResetInterface
{
    private $validator;
    private $collectedData = [];

    public function __construct(ValidatorInterface $validator)
    {
        $this->validator = $validator;
    }

    /**
     * @return array
     */
    public function getCollectedData()
    {
        return $this->collectedData;
    }

    public function reset()
    {
        $this->collectedData = [];
    }

    /**
     * {@inheritdoc}
     */
    public function getMetadataFor($value)
    {
        return $this->validator->getMetadataFor($value);
    }

    /**
     * {@inheritdoc}
     */
    public function hasMetadataFor($value)
    {
        return $this->validator->hasMetadataFor($value);
    }

    /**
     * {@inheritdoc}
     */
    public function validate($value, $constraints = null, $groups = null)
    {
        $violations = $this->validator->validate($value, $constraints, $groups);

        $trace = debug_backtrace(\DEBUG_BACKTRACE_IGNORE_ARGS, 7);

        $file = $trace[0]['file'];
        $line = $trace[0]['line'];

        for ($i = 1; $i < 7; ++$i) {
            if (isset($trace[$i]['class'], $trace[$i]['function'])
                && 'validate' === $trace[$i]['function']
                && is_a($trace[$i]['class'], ValidatorInterface::class, true)
            ) {
                $file = $trace[$i]['file'];
                $line = $trace[$i]['line'];

                while (++$i < 7) {
                    if (isset($trace[$i]['function'], $trace[$i]['file']) && empty($trace[$i]['class']) && !str_starts_with($trace[$i]['function'], 'call_user_func')) {
                        $file = $trace[$i]['file'];
                        $line = $trace[$i]['line'];

                        break;
                    }
                }
                break;
            }
        }

        $name = str_replace('\\', '/', $file);
        $name = substr($name, strrpos($name, '/') + 1);

        $this->collectedData[] = [
            'caller' => compact('name', 'file', 'line'),
            'context' => compact('value', 'constraints', 'groups'),
            'violations' => iterator_to_array($violations),
        ];

        return $violations;
    }

    /**
     * {@inheritdoc}
     */
    public function validateProperty(object $object, string $propertyName, $groups = null)
    {
        return $this->validator->validateProperty($object, $propertyName, $groups);
    }

    /**
     * {@inheritdoc}
     */
    public function validatePropertyValue($objectOrClass, string $propertyName, $value, $groups = null)
    {
        return $this->validator->validatePropertyValue($objectOrClass, $propertyName, $value, $groups);
    }

    /**
     * {@inheritdoc}
     */
    public function startContext()
    {
        return $this->validator->startContext();
    }

    /**
     * {@inheritdoc}
     */
    public function inContext(ExecutionContextInterface $context)
    {
        return $this->validator->inContext($context);
    }
}