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📁 ..
📄 AbstractClassPass.php(2.33 KB)
📄 AssignThisVariablePass.php(1.09 KB)
📄 CallTimePassByReferencePass.php(1.57 KB)
📄 CalledClassPass.php(2.69 KB)
📄 CodeCleanerPass.php(415 B)
📄 EmptyArrayDimFetchPass.php(1.99 KB)
📄 ExitPass.php(859 B)
📄 FinalClassPass.php(1.75 KB)
📄 FunctionContextPass.php(1.52 KB)
📄 FunctionReturnInWriteContextPass.php(2.69 KB)
📄 ImplicitReturnPass.php(4.12 KB)
📄 IssetPass.php(1.37 KB)
📄 LabelContextPass.php(2.55 KB)
📄 LeavePsyshAlonePass.php(992 B)
📄 ListPass.php(2.81 KB)
📄 LoopContextPass.php(3.95 KB)
📄 MagicConstantsPass.php(1.04 KB)
📄 NamespaceAwarePass.php(2.29 KB)
📄 NamespacePass.php(2.78 KB)
📄 NoReturnValue.php(828 B)
📄 PassableByReferencePass.php(4.48 KB)
📄 RequirePass.php(4.78 KB)
📄 ReturnTypePass.php(3.63 KB)
📄 StrictTypesPass.php(3.11 KB)
📄 UseStatementPass.php(4.66 KB)
📄 ValidClassNamePass.php(9.17 KB)
📄 ValidConstructorPass.php(4.03 KB)
📄 ValidFunctionNamePass.php(2.37 KB)

Editing: LabelContextPass.php

<?php

/*
 * This file is part of Psy Shell.
 *
 * (c) 2012-2023 Justin Hileman
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Psy\CodeCleaner;

use PhpParser\Node;
use PhpParser\Node\FunctionLike;
use PhpParser\Node\Stmt\Goto_;
use PhpParser\Node\Stmt\Label;
use Psy\Exception\FatalErrorException;

/**
 * CodeCleanerPass for label context.
 *
 * This class partially emulates the PHP label specification.
 * PsySH can not declare labels by sequentially executing lines with eval,
 * but since it is not a syntax error, no error is raised.
 * This class warns before invalid goto causes a fatal error.
 * Since this is a simple checker, it does not block real fatal error
 * with complex syntax.  (ex. it does not parse inside function.)
 *
 * @see http://php.net/goto
 */
class LabelContextPass extends CodeCleanerPass
{
    private int $functionDepth = 0;
    private array $labelDeclarations = [];
    private array $labelGotos = [];

/**
     * @param array $nodes
     *
     * @return Node[]|null Array of nodes
     */
    public function beforeTraverse(array $nodes)
    {
        $this->functionDepth = 0;
        $this->labelDeclarations = [];
        $this->labelGotos = [];
    }

/**
     * @return int|Node|null Replacement node (or special return value)
     */
    public function enterNode(Node $node)
    {
        if ($node instanceof FunctionLike) {
            $this->functionDepth++;

return;
        }

// node is inside function context
        if ($this->functionDepth !== 0) {
            return;
        }

if ($node instanceof Goto_) {
            $this->labelGotos[\strtolower($node->name)] = $node->getStartLine();
        } elseif ($node instanceof Label) {
            $this->labelDeclarations[\strtolower($node->name)] = $node->getStartLine();
        }
    }

/**
     * @param \PhpParser\Node $node
     *
     * @return int|Node|Node[]|null Replacement node (or special return value)
     */
    public function leaveNode(Node $node)
    {
        if ($node instanceof FunctionLike) {
            $this->functionDepth--;
        }
    }

/**
     * @return Node[]|null Array of nodes
     */
    public function afterTraverse(array $nodes)
    {
        foreach ($this->labelGotos as $name => $line) {
            if (!isset($this->labelDeclarations[$name])) {
                $msg = "'goto' to undefined label '{$name}'";
                throw new FatalErrorException($msg, 0, \E_ERROR, null, $line);
            }
        }
    }
}

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Editing: LabelContextPass.php

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