uiu-cse/inc/acf/includes/locations/class-acf-location-current-user.php

<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

if ( ! class_exists( 'ACF_Location_Current_User' ) ) :

	class ACF_Location_Current_User extends ACF_Location {

		/**
		 * Initializes props.
		 *
		 * @date    5/03/2014
		 * @since   5.0.0
		 *
		 * @param   void
		 * @return  void
		 */
		public function initialize() {
			$this->name     = 'current_user';
			$this->label    = __( 'Current User', 'acf' );
			$this->category = 'user';
		}

		/**
		 * Matches the provided rule against the screen args returning a bool result.
		 *
		 * @date    9/4/20
		 * @since   5.9.0
		 *
		 * @param   array $rule The location rule.
		 * @param   array $screen The screen args.
		 * @param   array $field_group The field group settings.
		 * @return  bool
		 */
		public function match( $rule, $screen, $field_group ) {
			switch ( $rule['value'] ) {
				case 'logged_in':
					$result = is_user_logged_in();
					break;
				case 'viewing_front':
					$result = ! is_admin();
					break;
				case 'viewing_back':
					$result = is_admin();
					break;
				default:
					$result = false;
					break;
			}

			// Reverse result for "!=" operator.
			if ( $rule['operator'] === '!=' ) {
				return ! $result;
			}
			return $result;
		}

		/**
		 * Returns an array of possible values for this rule type.
		 *
		 * @date    9/4/20
		 * @since   5.9.0
		 *
		 * @param   array $rule A location rule.
		 * @return  array
		 */
		public function get_values( $rule ) {
			return array(
				'logged_in'     => __( 'Logged in', 'acf' ),
				'viewing_front' => __( 'Viewing front end', 'acf' ),
				'viewing_back'  => __( 'Viewing back end', 'acf' ),
			);
		}
	}

	// Register.
	acf_register_location_type( 'ACF_Location_Current_User' );

endif; // class_exists check