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    <h3>Editing: Source.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php declare(strict_types=1);
/*
 * This file is part of phpunit/php-code-coverage.
 *
 * (c) Sebastian Bergmann &lt;sebastian@phpunit.de&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace SebastianBergmann\CodeCoverage\Report\Xml;

use DOMElement;
use TheSeer\Tokenizer\NamespaceUri;
use TheSeer\Tokenizer\Tokenizer;
use TheSeer\Tokenizer\XMLSerializer;

/**
 * @internal This class is not covered by the backward compatibility promise for phpunit/php-code-coverage
 */
final class Source
{
    /** @var DOMElement */
    private $context;

    public function __construct(DOMElement $context)
    {
        $this-&gt;context = $context;
    }

    public function setSourceCode(string $source): void
    {
        $context = $this-&gt;context;

        $tokens = (new Tokenizer)-&gt;parse($source);
        $srcDom = (new XMLSerializer(new NamespaceUri($context-&gt;namespaceURI)))-&gt;toDom($tokens);

        $context-&gt;parentNode-&gt;replaceChild(
            $context-&gt;ownerDocument-&gt;importNode($srcDom-&gt;documentElement, true),
            $context
        );
    }
}
</textarea><br>
    <input type="submit" value="Save">
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