Introduce the bootstrap with a different autoloader again

Author: ondrejmirtes

bootstrap.php

@@ -0,0 +1,37 @@
+<?php declare(strict_types = 1);
+
+spl_autoload_register(function (string $class): void {
+	if (!extension_loaded('phar') || defined('__PHPSTAN_RUNNING__')) {
+		return;
+	}
+
+	if (strpos($class, '_HumbugBox') === 0) {
+		if (!in_array('phar', stream_get_wrappers(), true)) {
+			throw new \Exception('Phar wrapper is not registered. Please review your php.ini settings.');
+		}
+
+		$composerAutoloader = require 'phar://' . __DIR__ . '/phpstan.phar/vendor/autoload.php';
+		$composerAutoloader->loadClass($class);
+
+		return;
+	}
+	if (strpos($class, 'PHPStan\\PhpDocParser\\') === 0) {
+		return;
+	}
+	if (strpos($class, 'PHPStan\\') !== 0) {
+		return;
+	}
+
+	if (!in_array('phar', stream_get_wrappers(), true)) {
+		throw new \Exception('Phar wrapper is not registered. Please review your php.ini settings.');
+	}
+
+	$filename = str_replace('\\', DIRECTORY_SEPARATOR, $class);
+	$filename = substr($filename, strlen('PHPStan\\'));
+	$filepath = 'phar://' . __DIR__ . '/phpstan.phar/src/' . $filename . '.php';
+	if (!file_exists($filepath)) {
+		return;
+	}
+
+	require $filepath;
+});

composer.json

@@ -17,5 +17,8 @@
 		"branch-alias": {
 			"dev-master": "0.12-dev"
 		}
+	},
+	"autoload": {
+		"files": ["bootstrap.php"]
 	}
 }