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ContextNodeVisitor.php
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ContextNodeVisitor.php
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<?php
declare (strict_types=1);
namespace Rector\NodeTypeResolver\PHPStan\Scope\NodeVisitor;
use PhpParser\Node;
use PhpParser\Node\Expr\ArrowFunction;
use PhpParser\Node\FunctionLike;
use PhpParser\Node\Stmt\Break_;
use PhpParser\Node\Stmt\Class_;
use PhpParser\Node\Stmt\Do_;
use PhpParser\Node\Stmt\For_;
use PhpParser\Node\Stmt\Foreach_;
use PhpParser\Node\Stmt\If_;
use PhpParser\Node\Stmt\Unset_;
use PhpParser\Node\Stmt\While_;
use PhpParser\NodeTraverser;
use PhpParser\NodeVisitorAbstract;
use Rector\NodeTypeResolver\Node\AttributeKey;
use Rector\NodeTypeResolver\PHPStan\Scope\Contract\NodeVisitor\ScopeResolverNodeVisitorInterface;
use Rector\PhpDocParser\NodeTraverser\SimpleCallableNodeTraverser;
final class ContextNodeVisitor extends NodeVisitorAbstract implements ScopeResolverNodeVisitorInterface
{
/**
* @readonly
* @var \Rector\PhpDocParser\NodeTraverser\SimpleCallableNodeTraverser
*/
private $simpleCallableNodeTraverser;
public function __construct(SimpleCallableNodeTraverser $simpleCallableNodeTraverser)
{
$this->simpleCallableNodeTraverser = $simpleCallableNodeTraverser;
}
public function enterNode(Node $node) : ?Node
{
if ($node instanceof For_ || $node instanceof Foreach_ || $node instanceof While_ || $node instanceof Do_) {
$this->simpleCallableNodeTraverser->traverseNodesWithCallable($node->stmts, static function (Node $subNode) : ?int {
if ($subNode instanceof Class_ || $subNode instanceof FunctionLike && !$subNode instanceof ArrowFunction) {
return NodeTraverser::DONT_TRAVERSE_CURRENT_AND_CHILDREN;
}
if ($subNode instanceof If_ || $subNode instanceof Break_) {
$subNode->setAttribute(AttributeKey::IS_IN_LOOP, \true);
}
return null;
});
return null;
}
if ($node instanceof Unset_) {
foreach ($node->vars as $var) {
$var->setAttribute(AttributeKey::IS_UNSET_VAR, \true);
}
}
return null;
}
}