/home/kueuepay/public_html/vendor/nikic/php-parser/lib/PhpParser/NodeTraverser.php
<?php declare(strict_types=1);

namespace PhpParser;

class NodeTraverser implements NodeTraverserInterface {
    /**
     * @deprecated Use NodeVisitor::DONT_TRAVERSE_CHILDREN instead.
     */
    public const DONT_TRAVERSE_CHILDREN = NodeVisitor::DONT_TRAVERSE_CHILDREN;

    /**
     * @deprecated Use NodeVisitor::STOP_TRAVERSAL instead.
     */
    public const STOP_TRAVERSAL = NodeVisitor::STOP_TRAVERSAL;

    /**
     * @deprecated Use NodeVisitor::REMOVE_NODE instead.
     */
    public const REMOVE_NODE = NodeVisitor::REMOVE_NODE;

    /**
     * @deprecated Use NodeVisitor::DONT_TRAVERSE_CURRENT_AND_CHILDREN instead.
     */
    public const DONT_TRAVERSE_CURRENT_AND_CHILDREN = NodeVisitor::DONT_TRAVERSE_CURRENT_AND_CHILDREN;

    /** @var list<NodeVisitor> Visitors */
    protected array $visitors = [];

    /** @var bool Whether traversal should be stopped */
    protected bool $stopTraversal;

    /**
     * Create a traverser with the given visitors.
     *
     * @param NodeVisitor ...$visitors Node visitors
     */
    public function __construct(NodeVisitor ...$visitors) {
        $this->visitors = $visitors;
    }

    /**
     * Adds a visitor.
     *
     * @param NodeVisitor $visitor Visitor to add
     */
    public function addVisitor(NodeVisitor $visitor): void {
        $this->visitors[] = $visitor;
    }

    /**
     * Removes an added visitor.
     */
    public function removeVisitor(NodeVisitor $visitor): void {
        $index = array_search($visitor, $this->visitors);
        if ($index !== false) {
            array_splice($this->visitors, $index, 1, []);
        }
    }

    /**
     * Traverses an array of nodes using the registered visitors.
     *
     * @param Node[] $nodes Array of nodes
     *
     * @return Node[] Traversed array of nodes
     */
    public function traverse(array $nodes): array {
        $this->stopTraversal = false;

        foreach ($this->visitors as $visitor) {
            if (null !== $return = $visitor->beforeTraverse($nodes)) {
                $nodes = $return;
            }
        }

        $nodes = $this->traverseArray($nodes);

        for ($i = \count($this->visitors) - 1; $i >= 0; --$i) {
            $visitor = $this->visitors[$i];
            if (null !== $return = $visitor->afterTraverse($nodes)) {
                $nodes = $return;
            }
        }

        return $nodes;
    }

    /**
     * Recursively traverse a node.
     *
     * @param Node $node Node to traverse.
     */
    protected function traverseNode(Node $node): void {
        foreach ($node->getSubNodeNames() as $name) {
            $subNode = $node->$name;

            if (\is_array($subNode)) {
                $node->$name = $this->traverseArray($subNode);
                if ($this->stopTraversal) {
                    break;
                }
            } elseif ($subNode instanceof Node) {
                $traverseChildren = true;
                $visitorIndex = -1;

                foreach ($this->visitors as $visitorIndex => $visitor) {
                    $return = $visitor->enterNode($subNode);
                    if (null !== $return) {
                        if ($return instanceof Node) {
                            $this->ensureReplacementReasonable($subNode, $return);
                            $subNode = $node->$name = $return;
                        } elseif (NodeVisitor::DONT_TRAVERSE_CHILDREN === $return) {
                            $traverseChildren = false;
                        } elseif (NodeVisitor::DONT_TRAVERSE_CURRENT_AND_CHILDREN === $return) {
                            $traverseChildren = false;
                            break;
                        } elseif (NodeVisitor::STOP_TRAVERSAL === $return) {
                            $this->stopTraversal = true;
                            break 2;
                        } elseif (NodeVisitor::REPLACE_WITH_NULL === $return) {
                            $node->$name = null;
                            continue 2;
                        } else {
                            throw new \LogicException(
                                'enterNode() returned invalid value of type ' . gettype($return)
                            );
                        }
                    }
                }

                if ($traverseChildren) {
                    $this->traverseNode($subNode);
                    if ($this->stopTraversal) {
                        break;
                    }
                }

                for (; $visitorIndex >= 0; --$visitorIndex) {
                    $visitor = $this->visitors[$visitorIndex];
                    $return = $visitor->leaveNode($subNode);

                    if (null !== $return) {
                        if ($return instanceof Node) {
                            $this->ensureReplacementReasonable($subNode, $return);
                            $subNode = $node->$name = $return;
                        } elseif (NodeVisitor::STOP_TRAVERSAL === $return) {
                            $this->stopTraversal = true;
                            break 2;
                        } elseif (NodeVisitor::REPLACE_WITH_NULL === $return) {
                            $node->$name = null;
                            break;
                        } elseif (\is_array($return)) {
                            throw new \LogicException(
                                'leaveNode() may only return an array ' .
                                'if the parent structure is an array'
                            );
                        } else {
                            throw new \LogicException(
                                'leaveNode() returned invalid value of type ' . gettype($return)
                            );
                        }
                    }
                }
            }
        }
    }

    /**
     * Recursively traverse array (usually of nodes).
     *
     * @param array $nodes Array to traverse
     *
     * @return array Result of traversal (may be original array or changed one)
     */
    protected function traverseArray(array $nodes): array {
        $doNodes = [];

        foreach ($nodes as $i => $node) {
            if ($node instanceof Node) {
                $traverseChildren = true;
                $visitorIndex = -1;

                foreach ($this->visitors as $visitorIndex => $visitor) {
                    $return = $visitor->enterNode($node);
                    if (null !== $return) {
                        if ($return instanceof Node) {
                            $this->ensureReplacementReasonable($node, $return);
                            $nodes[$i] = $node = $return;
                        } elseif (\is_array($return)) {
                            $doNodes[] = [$i, $return];
                            continue 2;
                        } elseif (NodeVisitor::REMOVE_NODE === $return) {
                            $doNodes[] = [$i, []];
                            continue 2;
                        } elseif (NodeVisitor::DONT_TRAVERSE_CHILDREN === $return) {
                            $traverseChildren = false;
                        } elseif (NodeVisitor::DONT_TRAVERSE_CURRENT_AND_CHILDREN === $return) {
                            $traverseChildren = false;
                            break;
                        } elseif (NodeVisitor::STOP_TRAVERSAL === $return) {
                            $this->stopTraversal = true;
                            break 2;
                        } elseif (NodeVisitor::REPLACE_WITH_NULL === $return) {
                            throw new \LogicException(
                                'REPLACE_WITH_NULL can not be used if the parent structure is an array');
                        } else {
                            throw new \LogicException(
                                'enterNode() returned invalid value of type ' . gettype($return)
                            );
                        }
                    }
                }

                if ($traverseChildren) {
                    $this->traverseNode($node);
                    if ($this->stopTraversal) {
                        break;
                    }
                }

                for (; $visitorIndex >= 0; --$visitorIndex) {
                    $visitor = $this->visitors[$visitorIndex];
                    $return = $visitor->leaveNode($node);

                    if (null !== $return) {
                        if ($return instanceof Node) {
                            $this->ensureReplacementReasonable($node, $return);
                            $nodes[$i] = $node = $return;
                        } elseif (\is_array($return)) {
                            $doNodes[] = [$i, $return];
                            break;
                        } elseif (NodeVisitor::REMOVE_NODE === $return) {
                            $doNodes[] = [$i, []];
                            break;
                        } elseif (NodeVisitor::STOP_TRAVERSAL === $return) {
                            $this->stopTraversal = true;
                            break 2;
                        } elseif (NodeVisitor::REPLACE_WITH_NULL === $return) {
                            throw new \LogicException(
                                'REPLACE_WITH_NULL can not be used if the parent structure is an array');
                        } else {
                            throw new \LogicException(
                                'leaveNode() returned invalid value of type ' . gettype($return)
                            );
                        }
                    }
                }
            } elseif (\is_array($node)) {
                throw new \LogicException('Invalid node structure: Contains nested arrays');
            }
        }

        if (!empty($doNodes)) {
            while (list($i, $replace) = array_pop($doNodes)) {
                array_splice($nodes, $i, 1, $replace);
            }
        }

        return $nodes;
    }

    private function ensureReplacementReasonable(Node $old, Node $new): void {
        if ($old instanceof Node\Stmt && $new instanceof Node\Expr) {
            throw new \LogicException(
                "Trying to replace statement ({$old->getType()}) " .
                "with expression ({$new->getType()}). Are you missing a " .
                "Stmt_Expression wrapper?"
            );
        }

        if ($old instanceof Node\Expr && $new instanceof Node\Stmt) {
            throw new \LogicException(
                "Trying to replace expression ({$old->getType()}) " .
                "with statement ({$new->getType()})"
            );
        }
    }
}
Path: home/kueuepay/public_html/vendor/nikic/php-parser/lib/PhpParser
Payment System
top

How To Payment

Simple Steps to Complete Your Payment Securely and Efficiently

Making a payment on our website is quick and secure. Start by logging in or creating an account. Select your preferred payment method, input the required details, and review the information. Once you confirm everything is correct, click on the "Submit Payment" button. You’ll receive instant confirmation and can track your payment status through your account dashboard. It’s an easy and secure process.

  • Go to the Payment Section: Access the payment area on our website or app.
  • Choose Your Payment Method: Select your preferred payment option.
  • Enter Payment Details: Provide the necessary payment information.
  • Verify Your Information: Check that all details are correct.
  • Confirm Your Payment: Click "Submit Payment" to complete the transaction.
img

In the digital age, privacy concerns have become increasingly paramount, prompting the European Union to enact the General Data Protection Regulation (GDPR) in 2018. Among its many provisions, GDPR sets strict guidelines for the collection and processing of personal data, including the use of cookies on websites. Privacy Policy