44 lines
1.6 KiB
Plaintext
44 lines
1.6 KiB
Plaintext
|
#!r6rs
|
||
|
|
;; Copyright (c) 2009 Derick Eddington. All rights reserved.
|
||
|
|
;; Licensed under an MIT-style license. My license is in the file
|
||
|
|
;; named LICENSE from the original collection this file is distributed
|
||
|
|
;; with. If this file is redistributed with some other collection, my
|
||
|
|
;; license must also be included.
|
||
|
|
|
||
|
|
(library (srfi s23 error tricks)
|
||
|
|
(export
|
||
|
|
SRFI-23-error->R6RS)
|
||
|
|
(import
|
||
|
|
(rnrs))
|
||
|
|
|
||
|
|
(define-syntax error-wrap
|
||
|
|
(lambda (stx)
|
||
|
|
(syntax-case stx ()
|
||
|
|
((_ ctxt signal expr ...)
|
||
|
|
(with-syntax ((e (datum->syntax #'ctxt 'error)))
|
||
|
|
#'(let-syntax ((e (identifier-syntax signal)))
|
||
|
|
expr ...))))))
|
||
|
|
|
||
|
|
(define (AV who)
|
||
|
|
(lambda args (apply assertion-violation who args)))
|
||
|
|
|
||
|
|
(define-syntax SRFI-23-error->R6RS
|
||
|
|
(lambda (stx)
|
||
|
|
(syntax-case stx ()
|
||
|
|
((ctxt ewho expr ...)
|
||
|
|
(with-syntax ((e (datum->syntax #'ctxt 'error))
|
||
|
|
(d (datum->syntax #'ctxt 'define)))
|
||
|
|
#'(let-syntax ((e (identifier-syntax (AV 'ewho)))
|
||
|
|
(d (lambda (stx)
|
||
|
|
(syntax-case stx ()
|
||
|
|
((kw (id . formals) . body)
|
||
|
|
(identifier? #'id)
|
||
|
|
#'(error-wrap kw (AV 'id)
|
||
|
|
(d (id . formals) . body)))
|
||
|
|
((kw id . r)
|
||
|
|
(identifier? #'id)
|
||
|
|
#'(error-wrap kw (AV 'id)
|
||
|
|
(d id . r)))))))
|
||
|
|
expr ...))))))
|
||
|
|
)
|