chippyash/simple-accounts-3

<?php

declare(strict_types=1);

/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 *
 * Rather than rely on a dependency for some small piece of functionality, I've decided
 * to include the source here.  If Zend or anyone else believes this to be a breach of
 * license, please contact me.
 */

namespace SAccounts\Zend;

use ErrorException;

/**
 * ErrorHandler that can be used to catch internal PHP errors
 * and convert to an ErrorException instance.
 */
abstract class ErrorHandler
{
    /**
     * Active stack
     *
     * @var array
     */
    protected static $stack = [];

    /**
     * Check if this error handler is active
     *
     * @return bool
     */
    public static function started()
    {
        return (bool) static::getNestedLevel();
    }

    /**
     * Get the current nested level
     *
     * @return int
     */
    public static function getNestedLevel()
    {
        return count(static::$stack);
    }

    /**
     * Starting the error handler
     *
     * @param int $errorLevel
     *
     * @return void
     */
    public static function start($errorLevel = \E_WARNING): void
    {
        if (!static::$stack) {
            set_error_handler([get_called_class(), 'addError'], $errorLevel);
        }

        static::$stack[] = null;
    }

    /**
     * Stopping the error handler
     *
     * @param  bool $throw Throw the ErrorException if any
     *
     * @return null|ErrorException
     *
     * @throws ErrorException If an error has been catched and $throw is true
     */
    public static function stop($throw = false)
    {
        $errorException = null;

        if (static::$stack) {
            $errorException = array_pop(static::$stack);

            if (!static::$stack) {
                restore_error_handler();
            }

            if ($errorException && $throw) {
                throw $errorException;
            }
        }

        return $errorException;
    }

    /**
     * Stop all active handler
     *
     * @return void
     */
    public static function clean(): void
    {
        if (static::$stack) {
            restore_error_handler();
        }

        static::$stack = [];
    }

    /**
     * Add an error to the stack
     *
     * @param int $errno
     * @param string $errstr
     * @param string $errfile
     * @param int $errline
     *
     * @return void
     */
    public static function addError($errno, $errstr = '', $errfile = '', $errline = 0): void
    {
        $stack = &static::$stack[count(static::$stack) - 1];
        $stack = new ErrorException($errstr, 0, $errno, $errfile, $errline, $stack);
    }
}