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Generalize types shown at the REPL, to keep types simple.

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original commit: 68d58f7d2acb887e3bca046ed369b31a058e4cfc
This commit is contained in:
Vincent St-Amour 2011-09-13 13:49:04 -04:00
parent 8f044e3880
commit 65401d5bd8
1 changed files with 19 additions and 11 deletions
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30
collects/typed-racket/core.rkt
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@ -88,19 +88,27 @@
[(tc-result1: t f o)
;; Don't display the whole types at the REPL. Some case-lambda types
;; are just too large to print.
(let ([tc (cleanup-type t)])
(format "- : ~a~a\n"
tc
(cond [(equal? tc t) ""]
[did-I-suggest-:print-type-already? " ..."]
[else (set! did-I-suggest-:print-type-already? #t)
:print-type-message])))]
;; Also, to avoid showing too precise types, we generalize types
;; before printing them.
(define tc (cleanup-type t))
(define tg (generalize tc))
(format "- : ~a~a~a\n"
tg
(cond [(equal? tc tg) ""]
[else (format " (generalized from ~a)" tc)])
(cond [(equal? tc t) ""]
[did-I-suggest-:print-type-already? " ..."]
[else (set! did-I-suggest-:print-type-already? #t)
:print-type-message]))]
[(tc-results: t)
(define new-ts (map cleanup-type t))
(format "- : ~a~a\n"
(cons 'Values new-ts)
(define tcs (map cleanup-type t))
(define tgs (map generalize tcs))
(format "- : ~a~a~a\n"
(cons 'Values tgs)
(cond [(andmap equal? tgs tcs) ""]
[else (format " (generalized from ~a)" (cons 'Values tcs))])
;; did any get pruned?
(cond [(andmap equal? t new-ts) ""]
(cond [(andmap equal? t tcs) ""]
[did-I-suggest-:print-type-already? " ..."]
[else (set! did-I-suggest-:print-type-already? #t)
:print-type-message]))]