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Direktori : /home2/selectio/www/3idiotsgadgetstore.in/vendor/psy/psysh/src/CodeCleaner/ |
Current File : /home2/selectio/www/3idiotsgadgetstore.in/vendor/psy/psysh/src/CodeCleaner/LoopContextPass.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\Scalar\DNumber; use PhpParser\Node\Scalar\LNumber; use PhpParser\Node\Stmt\Break_; use PhpParser\Node\Stmt\Continue_; use PhpParser\Node\Stmt\Do_; use PhpParser\Node\Stmt\For_; use PhpParser\Node\Stmt\Foreach_; use PhpParser\Node\Stmt\Switch_; use PhpParser\Node\Stmt\While_; use Psy\Exception\FatalErrorException; /** * The loop context pass handles invalid `break` and `continue` statements. */ class LoopContextPass extends CodeCleanerPass { private $loopDepth; /** * {@inheritdoc} * * @return Node[]|null Array of nodes */ public function beforeTraverse(array $nodes) { $this->loopDepth = 0; } /** * @throws FatalErrorException if the node is a break or continue in a non-loop or switch context * @throws FatalErrorException if the node is trying to break out of more nested structures than exist * @throws FatalErrorException if the node is a break or continue and has a non-numeric argument * @throws FatalErrorException if the node is a break or continue and has an argument less than 1 * * @param Node $node * * @return int|Node|null Replacement node (or special return value) */ public function enterNode(Node $node) { switch (true) { case $node instanceof Do_: case $node instanceof For_: case $node instanceof Foreach_: case $node instanceof Switch_: case $node instanceof While_: $this->loopDepth++; break; case $node instanceof Break_: case $node instanceof Continue_: $operator = $node instanceof Break_ ? 'break' : 'continue'; if ($this->loopDepth === 0) { $msg = \sprintf("'%s' not in the 'loop' or 'switch' context", $operator); throw new FatalErrorException($msg, 0, \E_ERROR, null, $node->getLine()); } if ($node->num instanceof LNumber || $node->num instanceof DNumber) { $num = $node->num->value; if ($node->num instanceof DNumber || $num < 1) { $msg = \sprintf("'%s' operator accepts only positive numbers", $operator); throw new FatalErrorException($msg, 0, \E_ERROR, null, $node->getLine()); } if ($num > $this->loopDepth) { $msg = \sprintf("Cannot '%s' %d levels", $operator, $num); throw new FatalErrorException($msg, 0, \E_ERROR, null, $node->getLine()); } } elseif ($node->num) { $msg = \sprintf("'%s' operator with non-constant operand is no longer supported", $operator); throw new FatalErrorException($msg, 0, \E_ERROR, null, $node->getLine()); } break; } } /** * @param Node $node * * @return int|Node|Node[]|null Replacement node (or special return value) */ public function leaveNode(Node $node) { switch (true) { case $node instanceof Do_: case $node instanceof For_: case $node instanceof Foreach_: case $node instanceof Switch_: case $node instanceof While_: $this->loopDepth--; break; } } }