suzanne.soy/racket
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix error message for (cons [else])

Browse Source 
Closes PR 10910
 Merge to 5.0.1
This commit is contained in:
Matthew Flatt 2010-07-20 10:33:55 -06:00
parent a2f3dad4f0
commit 8f15f04bd5
1 changed files with 10 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
collects/racket/private/cond.rkt
View File

@ -54,10 +54,7 @@
(free-identifier=? (stx-car value) =>-stx))
(if (and (stx-pair? (stx-cdr value))
(stx-null? (stx-cdr (stx-cdr value))))
(let ([test (if else?
#t
test)]
[gen (gen-temp-id 'c)])
(let ([gen (gen-temp-id 'c)])
`(,(quote-syntax let-values) ([(,gen) ,test])
(,(quote-syntax if) ,gen
(,(stx-car (stx-cdr value)) ,gen)
@ -66,11 +63,15 @@
"bad syntax (bad clause form with =>)"
line))
(if else?
(if first?
;; first => be careful not to introduce a splicable begin...
`(,(quote-syntax if) #t ,(cons (quote-syntax begin) value) (void))
;; we're in an `if' branch already...
(cons (quote-syntax begin) value))
(if (stx-null? value)
(serror
"missing expressions in `else' clause"
line)
(if first?
;; first => be careful not to introduce a splicable begin...
`(,(quote-syntax if) #t ,(cons (quote-syntax begin) value) (void))
;; we're in an `if' branch already...
(cons (quote-syntax begin) value)))
(if (stx-null? value)
(let ([gen (gen-temp-id 'c)])
`(,(quote-syntax let-values) ([(,gen) ,test])