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Direktori : /home2/selectio/public_html/limpiar.in.net/updates/vendor/psy/psysh/src/CodeCleaner/ |
Current File : /home2/selectio/public_html/limpiar.in.net/updates/vendor/psy/psysh/src/CodeCleaner/ListPass.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\Expr; use PhpParser\Node\Expr\Array_; use PhpParser\Node\Expr\ArrayDimFetch; use PhpParser\Node\Expr\ArrayItem; use PhpParser\Node\Expr\Assign; use PhpParser\Node\Expr\FuncCall; use PhpParser\Node\Expr\List_; use PhpParser\Node\Expr\MethodCall; use PhpParser\Node\Expr\PropertyFetch; use PhpParser\Node\Expr\Variable; use Psy\Exception\ParseErrorException; /** * Validate that the list assignment. */ class ListPass extends CodeCleanerPass { private $atLeastPhp71; public function __construct() { $this->atLeastPhp71 = \version_compare(\PHP_VERSION, '7.1', '>='); } /** * Validate use of list assignment. * * @throws ParseErrorException if the user used empty with anything but a variable * * @param Node $node * * @return int|Node|null Replacement node (or special return value) */ public function enterNode(Node $node) { if (!$node instanceof Assign) { return; } if (!$node->var instanceof Array_ && !$node->var instanceof List_) { return; } if (!$this->atLeastPhp71 && $node->var instanceof Array_) { $msg = "syntax error, unexpected '='"; throw new ParseErrorException($msg, $node->expr->getLine()); } // Polyfill for PHP-Parser 2.x $items = isset($node->var->items) ? $node->var->items : $node->var->vars; if ($items === [] || $items === [null]) { throw new ParseErrorException('Cannot use empty list', $node->var->getLine()); } $itemFound = false; foreach ($items as $item) { if ($item === null) { continue; } $itemFound = true; // List_->$vars in PHP-Parser 2.x is Variable instead of ArrayItem. if (!$this->atLeastPhp71 && $item instanceof ArrayItem && $item->key !== null) { $msg = 'Syntax error, unexpected T_CONSTANT_ENCAPSED_STRING, expecting \',\' or \')\''; throw new ParseErrorException($msg, $item->key->getLine()); } if (!self::isValidArrayItem($item)) { $msg = 'Assignments can only happen to writable values'; throw new ParseErrorException($msg, $item->getLine()); } } if (!$itemFound) { throw new ParseErrorException('Cannot use empty list'); } } /** * Validate whether a given item in an array is valid for short assignment. * * @param Expr $item */ private static function isValidArrayItem(Expr $item): bool { $value = ($item instanceof ArrayItem) ? $item->value : $item; while ($value instanceof ArrayDimFetch || $value instanceof PropertyFetch) { $value = $value->var; } // We just kind of give up if it's a method call. We can't tell if it's // valid via static analysis. return $value instanceof Variable || $value instanceof MethodCall || $value instanceof FuncCall; } }