mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-06 15:40:29 +02:00
ce543a9f70
along with its dependencies. * module/Makefile.am: Add new R6RS libraries below to RNRS_SOURCES. * module/rnrs/6/conditions.scm, exceptions.scm, syntax-case.scm: New files. * module/rnrs/io/6/simple.scm: New file. * module/rnrs/records/6/procedural.scm, syntactic.scm: New files. * test-suite/Makefile.am: Add tests/r6rs-records-procedural.test to SCM_TESTS. * test-suite/tests/r6rs-records-procedural.test: New file.
51 lines
2 KiB
Scheme
51 lines
2 KiB
Scheme
;;; exceptions.scm --- The R6RS exceptions library
|
||
|
||
;; Copyright (C) 2010 Free Software Foundation, Inc.
|
||
;;
|
||
;; This library is free software; you can redistribute it and/or
|
||
;; modify it under the terms of the GNU Lesser General Public
|
||
;; License as published by the Free Software Foundation; either
|
||
;; version 3 of the License, or (at your option) any later version.
|
||
;;
|
||
;; This library is distributed in the hope that it will be useful,
|
||
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
;; Lesser General Public License for more details.
|
||
;;
|
||
;; You should have received a copy of the GNU Lesser General Public
|
||
;; License along with this library; if not, write to the Free Software
|
||
;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
||
|
||
(library (rnrs exceptions (6))
|
||
(export with-exception-handler raise raise-continuable)
|
||
(import (rnrs base (6))
|
||
(rnrs conditions (6))
|
||
(rnrs records procedural (6))
|
||
(only (guile) with-throw-handler))
|
||
|
||
(define raise (@@ (rnrs records procedural) r6rs-raise))
|
||
(define raise-continuable
|
||
(@@ (rnrs records procedural) r6rs-raise-continuable))
|
||
(define raise-object-wrapper?
|
||
(@@ (rnrs records procedural) raise-object-wrapper?))
|
||
(define raise-object-wrapper-obj
|
||
(@@ (rnrs records procedural) raise-object-wrapper-obj))
|
||
(define raise-object-wrapper-continuation
|
||
(@@ (rnrs records procedural) raise-object-wrapper-continuation))
|
||
|
||
(define (with-exception-handler handler thunk)
|
||
(with-throw-handler 'r6rs:exception
|
||
thunk
|
||
(lambda (key . args)
|
||
(if (and (not (null? args))
|
||
(raise-object-wrapper? (car args)))
|
||
(let* ((cargs (car args))
|
||
(obj (raise-object-wrapper-obj cargs))
|
||
(continuation (raise-object-wrapper-continuation cargs))
|
||
(handler-return (handler obj)))
|
||
(if continuation
|
||
(continuation handler-return)
|
||
(raise (make-non-continuable-violation))))
|
||
*unspecified*))))
|
||
)
|