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Add (rnrs conditions)

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This commit is contained in:
Daphne Preston-Kendal 2024-11-02 10:31:11 +01:00
parent c1b017aaa7
commit 910c32182f
1 changed files with 11 additions and 8 deletions
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19
lib/rnrs/base.sld
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@ -195,6 +195,7 @@
(scheme cxr)
(scheme inexact)
(scheme complex)
(rnrs conditions)
(rename (srfi 141)
(euclidean-quotient div)
(euclidean-remainder mod)
@ -211,15 +212,17 @@
(if (not expr)
(assertion-violation #f "assertion failed" (quote expr))))))
;; for now, errors and assertion violations are the same until we
;; work out what to do about SRFI 35/(rnrs conditions) support
(define (%error make-base who message irritants)
(assert (or (not who) (symbol? who) (string? who)))
(assert (string? message))
(raise (condition (make-base)
(if who (make-who-condition who) (condition))
(make-message-condition message)
(make-irritants-condition irritants))))
(define (error who message . irritants)
(define full-message
(if who
(show #f (written who) ": " message)
message))
(apply r7rs:error full-message irritants))
(define assertion-violation error)
(%error make-error who message irritants))
(define (assertion-violation who message . irritants)
(%error make-assertion-violation who message irritants))
(define (real-valued? n) (zero? (imag-part n)))
(define (rational-valued? n)