;;; 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)