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Fix contracts.

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Handle improper formals lists.
This commit is contained in:
Sam Tobin-Hochstadt 2010-05-12 11:53:27 -04:00
parent e81cdba69f
commit e7c8ffb834
1 changed files with 12 additions and 2 deletions
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14
collects/typed-scheme/typecheck/tc-lambda-unit.rkt
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@ -58,7 +58,7 @@
;; listof[id] option[id] block listof[type] option[type] option[(cons type var)] tc-result -> lam-result
(d/c (check-clause arg-list rest body arg-tys rest-ty drest ret-ty)
((listof identifier?)
(or/c #f identifier?) syntax? (listof Type/c) (or/c #f Type/c) (or/c #f (list/c Type/c symbol?)) tc-results?
(or/c #f identifier?) syntax? (listof Type/c) (or/c #f Type/c) (or/c #f (cons/c Type/c symbol?)) tc-results?
. --> .
lam-result?)
(let* ([arg-len (length arg-list)]
@ -188,6 +188,16 @@
[(pair? (syntax-e s))
(+ 1 (loop (cdr (syntax-e s))))]
[else 1]))]))
(define (formals->list s)
(let loop ([s s])
(cond
[(pair? s)
(cons (car s) (loop (cdr s)))]
[(null? s) s]
[(pair? (syntax-e s))
(cons (stx-car s) (loop (cdr (syntax-e s))))]
[(null? (syntax-e s)) null]
[else (list s)])))
(define (go formals bodies formals* bodies* nums-seen)
(cond
[(null? formals)
@ -212,7 +222,7 @@
(let ([fmls (car (syntax->list formals))])
(for/list ([args argss] [ret rets] [rest rests] [drest drests])
(tc/lambda-clause/check fmls (car (syntax->list bodies))
args (values->tc-results ret (syntax->list fmls)) rest drest)))]
args (values->tc-results ret (formals->list fmls)) rest drest)))]
[_ (go (syntax->list formals) (syntax->list bodies) null null null)]))]
;; otherwise
[else (go (syntax->list formals) (syntax->list bodies) null null null)]))