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Translate assume to a noop when assumptions are disabled

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This commit is contained in:
Marc Nieper-Wißkirchen 2020-08-29 11:11:46 +02:00
parent 043e4c2214
commit 251464eade
1 changed files with 19 additions and 26 deletions
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17
lib/srfi/145.sld
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@ -1,9 +1,10 @@
(define-library (srfi 145)
(export assume)
(import (scheme base))
(cond-expand
(elide-assumptions
((or elide-assumptions
(and (not assumptions)
(not debug)))
(begin
(define-syntax assume
(syntax-rules ()
@ -17,14 +18,6 @@
(syntax-rules ()
((assume expression objs ...)
(or expression
(fatal-error "invalid assumption" 'expression objs ...)))
(error "invalid assumption" 'expression objs ...)))
((assume)
(syntax-error "assume requires an expression")))))))
(cond-expand
(debug
(begin
(define fatal-error error)))
(else
(begin
(define (fatal-error message . objs)
(car 0))))))
(syntax-error "assume requires an expression"))))))))