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<?php declare (strict_types=1); namespace Rector\CodeQuality\Rector\BooleanAnd; use PhpParser\Node; use PhpParser\Node\Expr\Array_; use PhpParser\Node\Expr\BinaryOp\BooleanAnd; use PhpParser\Node\Expr\BinaryOp\Identical; use PhpParser\Node\Expr\Empty_; use PhpParser\Node\Expr\FuncCall; use Rector\Core\NodeManipulator\BinaryOpManipulator; use Rector\Core\Rector\AbstractRector; use Rector\Php71\ValueObject\TwoNodeMatch; use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample; use Symplify\RuleDocGenerator\ValueObject\RuleDefinition; /** * @changelog https://3v4l.org/EZ2P4 * @changelog https://3v4l.org/egtb5 * @see \Rector\Tests\CodeQuality\Rector\BooleanAnd\SimplifyEmptyArrayCheckRector\SimplifyEmptyArrayCheckRectorTest */ final class SimplifyEmptyArrayCheckRector extends AbstractRector { /** * @readonly * @var \Rector\Core\NodeManipulator\BinaryOpManipulator */ private $binaryOpManipulator; public function __construct(BinaryOpManipulator $binaryOpManipulator) { $this->binaryOpManipulator = $binaryOpManipulator; } public function getRuleDefinition() : RuleDefinition { return new RuleDefinition('Simplify `is_array` and `empty` functions combination into a simple identical check for an empty array', [new CodeSample('is_array($values) && empty($values)', '$values === []')]); } /** * @return array<class-string<Node>> */ public function getNodeTypes() : array { return [BooleanAnd::class]; } /** * @param BooleanAnd $node */ public function refactor(Node $node) : ?Node { $twoNodeMatch = $this->binaryOpManipulator->matchFirstAndSecondConditionNode( $node, // is_array(...) function (Node $node) : bool { if (!$node instanceof FuncCall) { return \false; } return $this->isName($node, 'is_array'); }, Empty_::class ); if (!$twoNodeMatch instanceof TwoNodeMatch) { return null; } /** @var Empty_ $emptyOrNotIdenticalNode */ $emptyOrNotIdenticalNode = $twoNodeMatch->getSecondExpr(); return new Identical($emptyOrNotIdenticalNode->expr, new Array_()); } }
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