<?php declare(strict_types=1);

namespace PhpParser;

interface NodeVisitor {
    /**
     * If NodeVisitor::enterNode() returns DONT_TRAVERSE_CHILDREN, child nodes
     * of the current node will not be traversed for any visitors.
     *
     * For subsequent visitors enterNode() will still be called on the current
     * node and leaveNode() will also be invoked for the current node.
     */
    public const DONT_TRAVERSE_CHILDREN = 1;

    /**
     * If NodeVisitor::enterNode() or NodeVisitor::leaveNode() returns
     * STOP_TRAVERSAL, traversal is aborted.
     *
     * The afterTraverse() method will still be invoked.
     */
    public const STOP_TRAVERSAL = 2;

    /**
     * If NodeVisitor::leaveNode() returns REMOVE_NODE for a node that occurs
     * in an array, it will be removed from the array.
     *
     * For subsequent visitors leaveNode() will still be invoked for the
     * removed node.
     */
    public const REMOVE_NODE = 3;

    /**
     * If NodeVisitor::enterNode() returns DONT_TRAVERSE_CURRENT_AND_CHILDREN, child nodes
     * of the current node will not be traversed for any visitors.
     *
     * For subsequent visitors enterNode() will not be called as well.
     * leaveNode() will be invoked for visitors that has enterNode() method invoked.
     */
    public const DONT_TRAVERSE_CURRENT_AND_CHILDREN = 4;

    /**
     * If NodeVisitor::enterNode() or NodeVisitor::leaveNode() returns REPLACE_WITH_NULL,
     * the node will be replaced with null. This is not a legal return value if the node is part
     * of an array, rather than another node.
     */
    public const REPLACE_WITH_NULL = 5;

    /**
     * Called once before traversal.
     *
     * Return value semantics:
     *  * null:      $nodes stays as-is
     *  * otherwise: $nodes is set to the return value
     *
     * @param Node[] $nodes Array of nodes
     *
     * @return null|Node[] Array of nodes
     */
    public function beforeTraverse(array $nodes);

    /**
     * Called when entering a node.
     *
     * Return value semantics:
     *  * null
     *        => $node stays as-is
     *  * array (of Nodes)
     *        => The return value is merged into the parent array (at the position of the $node)
     *  * NodeVisitor::REMOVE_NODE
     *        => $node is removed from the parent array
     *  * NodeVisitor::REPLACE_WITH_NULL
     *        => $node is replaced with null
     *  * NodeVisitor::DONT_TRAVERSE_CHILDREN
     *        => Children of $node are not traversed. $node stays as-is
     *  * NodeVisitor::DONT_TRAVERSE_CURRENT_AND_CHILDREN
     *        => Further visitors for the current node are skipped, and its children are not
     *           traversed. $node stays as-is.
     *  * NodeVisitor::STOP_TRAVERSAL
     *        => Traversal is aborted. $node stays as-is
     *  * otherwise
     *        => $node is set to the return value
     *
     * @param Node $node Node
     *
     * @return null|int|Node|Node[] Replacement node (or special return value)
     */
    public function enterNode(Node $node);

    /**
     * Called when leaving a node.
     *
     * Return value semantics:
     *  * null
     *        => $node stays as-is
     *  * NodeVisitor::REMOVE_NODE
     *        => $node is removed from the parent array
     *  * NodeVisitor::REPLACE_WITH_NULL
     *        => $node is replaced with null
     *  * NodeVisitor::STOP_TRAVERSAL
     *        => Traversal is aborted. $node stays as-is
     *  * array (of Nodes)
     *        => The return value is merged into the parent array (at the position of the $node)
     *  * otherwise
     *        => $node is set to the return value
     *
     * @param Node $node Node
     *
     * @return null|int|Node|Node[] Replacement node (or special return value)
     */
    public function leaveNode(Node $node);

    /**
     * Called once after traversal.
     *
     * Return value semantics:
     *  * null:      $nodes stays as-is
     *  * otherwise: $nodes is set to the return value
     *
     * @param Node[] $nodes Array of nodes
     *
     * @return null|Node[] Array of nodes
     */
    public function afterTraverse(array $nodes);
}

• [D] Builder
• [D] Comment
• [D] ErrorHandler
• [D] Internal
• [D] Lexer
• [D] Node
• [D] NodeVisitor
• [D] Parser
• [D] PrettyPrinter
• [F] Builder.php
  Delete
• [F] BuilderFactory.php
  Delete
• [F] BuilderHelpers.php
  Delete
• [F] Comment.php
  Delete
• [F] compatibility_tokens.php
  Delete
• [F] ConstExprEvaluationException.php
  Delete
• [F] ConstExprEvaluator.php
  Delete
• [F] Error.php
  Delete
• [F] ErrorHandler.php
  Delete
• [F] JsonDecoder.php
  Delete
• [F] Lexer.php
  Delete
• [F] Modifiers.php
  Delete
• [F] NameContext.php
  Delete
• [F] Node.php
  Delete
• [F] NodeAbstract.php
  Delete
• [F] NodeDumper.php
  Delete
• [F] NodeFinder.php
  Delete
• [F] NodeTraverser.php
  Delete
• [F] NodeTraverserInterface.php
  Delete
• [F] NodeVisitor.php
  Delete
• [F] NodeVisitorAbstract.php
  Delete
• [F] Parser.php
  Delete
• [F] ParserAbstract.php
  Delete
• [F] ParserFactory.php
  Delete
• [F] PhpVersion.php
  Delete
• [F] PrettyPrinter.php
  Delete
• [F] PrettyPrinterAbstract.php
  Delete
• [F] Token.php
  Delete

About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

• Simplifying Payments, One Tap at a Time.
• Reinventing Your Wallet for Modern Convenience.
• Smart Payments for a Effortless Lifestyle.
• Experience the Ease of Tap and Pay.
• Innovative Solutions for Your Daily Transactions.

FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

Download the app and sign up using your email or phone number, then complete the verification process.

Is my payment information secure?

Yes, we use advanced encryption and security protocols to protect your payment details.

Can I add multiple cards to my NFC Pay wallet?

Absolutely, you can link multiple debit or credit cards to your wallet.

How do I transfer money to another user?

Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.

What should I do if I forget my PIN?

Use the “Forgot PIN” feature in the app to reset it following the provided instructions.

How can I activate my merchant account?

Sign up for a merchant account through the app and follow the setup instructions to start accepting payments.

Can I track my payment status?

Yes, you can view and track your payment status in the account dashboard