<?php
/**
 * WordPress Coding Standard.
 *
 * @package WPCS\WordPressCodingStandards
 * @link    https://github.com/WordPress/WordPress-Coding-Standards
 * @license https://opensource.org/licenses/MIT MIT
 */

namespace WordPressCS\WordPress\Sniffs\PHP;

use WordPressCS\WordPress\AbstractFunctionRestrictionsSniff;

/**
 * Restricts the usage of extract().
 *
 * @link https://developer.wordpress.org/coding-standards/wordpress-coding-standards/php/#dont-extract
 *
 * @since 0.10.0 Previously this check was contained within the
 *               `WordPress.VIP.RestrictedFunctions` sniff.
 * @since 0.13.0 Class name changed: this class is now namespaced.
 * @since 1.0.0  This sniff has been moved from the `Functions` category to the `PHP` category.
 */
final class DontExtractSniff extends AbstractFunctionRestrictionsSniff {

    /**
     * Groups of functions to restrict.
     *
     * Example: groups => array(
     *  'lambda' => array(
     *      'type'      => 'error' | 'warning',
     *      'message'   => 'Use anonymous functions instead please!',
     *      'functions' => array( 'file_get_contents', 'create_function' ),
     *  )
     * )
     *
     * @return array
     */
    public function getGroups() {
        return array(

            'extract' => array(
                'type'      => 'error',
                'message'   => '%s() usage is highly discouraged, due to the complexity and unintended issues it might cause.',
                'functions' => array(
                    'extract',
                ),
            ),

        );
    }
}