<?php

declare(strict_types=1);

/*
 * This file is part of the league/commonmark package.
 *
 * (c) Colin O'Dell <colinodell@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace League\CommonMark\Node;

use League\CommonMark\Node\Query\AndExpr;
use League\CommonMark\Node\Query\OrExpr;

final class Query
{
    /** @var callable(Node): bool $condition */
    private $condition;

    public function __construct()
    {
        $this->condition = new AndExpr();
    }

    public function where(callable ...$conditions): self
    {
        return $this->andWhere(...$conditions);
    }

    public function andWhere(callable ...$conditions): self
    {
        if ($this->condition instanceof AndExpr) {
            foreach ($conditions as $condition) {
                $this->condition->add($condition);
            }
        } else {
            $this->condition = new AndExpr($this->condition, ...$conditions);
        }

        return $this;
    }

    public function orWhere(callable ...$conditions): self
    {
        if ($this->condition instanceof OrExpr) {
            foreach ($conditions as $condition) {
                $this->condition->add($condition);
            }
        } else {
            $this->condition = new OrExpr($this->condition, ...$conditions);
        }

        return $this;
    }

    public function findOne(Node $node): ?Node
    {
        foreach ($node->iterator() as $n) {
            if (\call_user_func($this->condition, $n)) {
                return $n;
            }
        }

        return null;
    }

    /**
     * @return iterable<Node>
     */
    public function findAll(Node $node, ?int $limit = PHP_INT_MAX): iterable
    {
        $resultCount = 0;

        foreach ($node->iterator() as $n) {
            if ($resultCount >= $limit) {
                break;
            }

            if (! \call_user_func($this->condition, $n)) {
                continue;
            }

            ++$resultCount;

            yield $n;
        }
    }

    /**
     * @return callable(Node): bool
     */
    public static function type(string $class): callable
    {
        return static fn (Node $node): bool => $node instanceof $class;
    }

    /**
     * @psalm-param ?callable(Node): bool $condition
     *
     * @return callable(Node): bool
     */
    public static function hasChild(?callable $condition = null): callable
    {
        return static function (Node $node) use ($condition): bool {
            foreach ($node->children() as $child) {
                if ($condition === null || $condition($child)) {
                    return true;
                }
            }

            return false;
        };
    }

    /**
     * @psalm-param ?callable(Node): bool $condition
     *
     * @return callable(Node): bool
     */
    public static function hasParent(?callable $condition = null): callable
    {
        return static function (Node $node) use ($condition): bool {
            $parent = $node->parent();
            if ($parent === null) {
                return false;
            }

            if ($condition === null) {
                return true;
            }

            return $condition($parent);
        };
    }
}

• [D] Block
• [D] Inline
• [D] Query
• [F] Node.php
  Delete
• [F] NodeIterator.php
  Delete
• [F] NodeWalker.php
  Delete
• [F] NodeWalkerEvent.php
  Delete
• [F] Query.php
  Delete
• [F] RawMarkupContainerInterface.php
  Delete
• [F] StringContainerHelper.php
  Delete
• [F] StringContainerInterface.php
  Delete

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.