feat: add HTTPExceptionInterface and ExitExceptionInterface

system/Database/Exceptions/DatabaseException.php

@@ -11,9 +11,10 @@
 
 namespace CodeIgniter\Database\Exceptions;
 
+use CodeIgniter\Exceptions\HasExitCodeException;
 use Error;
 
-class DatabaseException extends Error implements ExceptionInterface
+class DatabaseException extends Error implements ExceptionInterface, HasExitCodeException
 {
     /**
      * Exit status code

system/Exceptions/CastException.php

@@ -18,7 +18,7 @@ namespace CodeIgniter\Exceptions;
  *
  * @codeCoverageIgnore
  */
-class CastException extends CriticalError
+class CastException extends CriticalError implements HasExitCodeException
 {
     use DebugTraceableTrait;
 

system/Exceptions/ConfigException.php

@@ -14,7 +14,7 @@ namespace CodeIgniter\Exceptions;
 /**
  * Exception for automatic logging.
  */
-class ConfigException extends CriticalError
+class ConfigException extends CriticalError implements HasExitCodeException
 {
     use DebugTraceableTrait;
 

system/Exceptions/ExitExceptionInterface.php

@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Exceptions;
+
+/**
+ * Interface for Exceptions that has exception code as exit code.
+ */
+interface ExitExceptionInterface
+{
+}

system/Exceptions/HTTPExceptionInterface.php

@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * This file is part of CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Exceptions;
+
+/**
+ * Interface for Exceptions that has exception code as HTTP status code.
+ */
+interface HTTPExceptionInterface
+{
+}

system/Exceptions/PageNotFoundException.php

@@ -14,7 +14,7 @@ namespace CodeIgniter\Exceptions;
 use Config\Services;
 use OutOfBoundsException;
 
-class PageNotFoundException extends OutOfBoundsException implements ExceptionInterface
+class PageNotFoundException extends OutOfBoundsException implements ExceptionInterface, HasHttpStatusCodeException
 {
     use DebugTraceableTrait;
 

system/Router/Exceptions/RedirectException.php

@@ -11,12 +11,13 @@
 
 namespace CodeIgniter\Router\Exceptions;
 
+use CodeIgniter\Exceptions\HasHttpStatusCodeException;
 use Exception;
 
 /**
  * RedirectException
  */
-class RedirectException extends Exception
+class RedirectException extends Exception implements HasHttpStatusCodeException
 {
     /**
      * HTTP status code for redirects