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+;;; guile-sdl3 -- Scheme bindings for SDL3
+;;; Copyright © 2024 David Thompson <dthompson2@worcester.edu>
+;;;
+;;; Licensed under the Apache License, Version 2.0 (the "License");
+;;; you may not use this file except in compliance with the License.
+;;; You may obtain a copy of the License at
+;;;
+;;;    http://www.apache.org/licenses/LICENSE-2.0
+;;;
+;;; Unless required by applicable law or agreed to in writing, software
+;;; distributed under the License is distributed on an "AS IS" BASIS,
+;;; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+;;; See the License for the specific language governing permissions and
+;;; limitations under the License.
+
+;;; Commentary:
+;;
+;; SDL3 errors.
+;;
+;;; Code:
+
+(define-module (sdl3 errors)
+  #:use-module (ice-9 exceptions)
+  #:use-module (sdl3 bindings error)
+  #:use-module (system foreign)
+  #:export (sdl-get-error
+            make-sdl-error
+            sdl-assert
+            sdl-assert-non-null))
+
+(define (sdl-get-error)
+  (pointer->string (SDL_GetError)))
+
+(define-exception-type &sdl-exception &error
+  make-sdl-exception
+  sdl-exception?)
+
+(define* (make-sdl-error origin #:key
+                         (message (sdl-get-error))
+                         (irritants '()))
+  (make-exception
+   (make-sdl-exception)
+   (make-exception-with-message message)
+   (make-exception-with-irritants irritants)
+   (make-exception-with-origin origin)))
+
+(define (sdl-assert origin bool)
+  (unless (eq? bool 1)
+    (raise-exception (make-sdl-error origin))))
+
+(define (sdl-assert-non-null origin pointer)
+  (when (null-pointer? pointer)
+    (raise-exception (make-sdl-error origin)))
+  pointer)