installed plugin Easy Digital Downloads version 3.1.0.3

wp-content/plugins/easy-digital-downloads/includes/compat/class-base.php

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+<?php
+/**
+ * A Base Backwards Compatibility Class.
+ *
+ * @package     EDD
+ * @subpackage  Compat
+ * @copyright   Copyright (c) 2018, Easy Digital Downloads, LLC
+ * @license     http://opensource.org/licenses/gpl-2.0.php GNU Public License
+ * @since       3.0
+ */
+namespace EDD\Compat;
+
+// Exit if accessed directly
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * Base class.
+ *
+ * @since 3.0
+ */
+abstract class Base {
+
+	/**
+	 * Holds the component for which we are handling back-compat. There is a chance that two methods have the same name
+	 * and need to be dispatched to completely other methods. When a new instance of Back_Compat is created, a component
+	 * can be passed to the constructor which will allow __call() to dispatch to the correct methods.
+	 *
+	 * @since 3.0
+	 * @access protected
+	 * @var string
+	 */
+	protected $component;
+
+	/**
+	 * Whether or not to show deprecated notices.
+	 *
+	 * @var bool
+	 */
+	protected $show_notices;
+
+	/**
+	 * Whether or not to show backtrace.
+	 *
+	 * @var bool
+	 */
+	protected $show_backtrace;
+
+	/**
+	 * Constructor.
+	 *
+	 * @since 3.0
+	 */
+	public function __construct() {
+		$this->hooks();
+
+		$this->show_notices   = apply_filters( 'edd_show_deprecated_notices', ( defined( 'WP_DEBUG' ) && WP_DEBUG ) );
+		$this->show_backtrace = apply_filters( 'edd_show_backtrace', ( defined( 'WP_DEBUG' ) && WP_DEBUG ) && ! defined( 'EDD_DOING_TESTS' ) );
+	}
+
+	/**
+	 * Getter for component.
+	 *
+	 * @since 3.0
+	 *
+	 * @return string Component.
+	 */
+	public function get_component() {
+		return $this->component;
+	}
+
+	/**
+	 * Backwards compatibility hooks for component.
+	 *
+	 * @since 3.0
+	 * @access protected
+	 */
+	abstract protected function hooks();
+}