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utils: Replace all casts with asserts.

Browse source 
https://racket.discourse.group/t/managing-cast-performance-penalty/905
This commit is contained in:
Sergiu Ivanov 2022-04-24 14:03:27 +02:00
parent 0e9a974965
commit 2e8373d037
1 changed files with 16 additions and 7 deletions
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23
utils.rkt
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@ -107,7 +107,7 @@
([x form])
(extract-symbols x)))]
[else '()]))
(cast (extract-rec form) (Listof Symbol)))
(assert (extract-rec form) (make-predicate (Listof Symbol))))
(module+ test
(test-case "extract-symbols"
@ -173,7 +173,10 @@
(module+ test
(test-case "map-sexp"
(check-equal? (map-sexp (λ (x) (add1 (cast x Number))) '(1 2 (4 10) 3))
(check-equal? (map-sexp (λ (x)
(assert x number?)
(add1 x))
'(1 2 (4 10) 3))
'(2 3 (5 11) 4))))
(: read-org-sexp (-> String Any))
@ -220,7 +223,8 @@
(λ ([pairs : (Listof (Pair Symbol Any))])
(make-immutable-hash pairs))
(λ (sexp)
(unstringify-pairs (cast sexp (Listof (GeneralPair String Any)))))
(assert sexp (make-predicate (Listof (GeneralPair String Any))))
(unstringify-pairs sexp))
string->any))
;;; A synonym for read-org-variable-mapping.
@ -240,7 +244,8 @@
(: read-symbol-list (-> String (Listof Symbol)))
(define (read-symbol-list str)
(cast (string->any (string-append "(" str ")")) (Listof Symbol)))
(assert (string->any (string-append "(" str ")"))
(make-predicate (Listof Symbol))))
(module+ test
(test-case "read-symbol-list"
@ -297,7 +302,8 @@
(define gr1 (directed-graph '((a b) (b c))))
(define gr2 (undirected-graph '((a b) (b c))))
(define (dbl [x : Any])
(define x-str (symbol->string (cast x Symbol)))
(assert x symbol?)
(define x-str (symbol->string x))
(string->symbol (string-append x-str x-str)))
(define new-gr1 (update-vertices/unweighted gr1 dbl))
(define new-gr2 (update-vertices/unweighted gr2 dbl))
@ -336,14 +342,17 @@
(define gr1 (directed-graph '((a b) (b c))))
(define gr2 (undirected-graph '((a b) (b c))))
(define (dbl [x : Any])
(define x-str (symbol->string (cast x Symbol)))
(assert x symbol?)
(define x-str (symbol->string x))
(string->symbol (string-append x-str x-str)))
(define new-gr1-ug (update-graph gr1 #:v-func dbl))
(define new-gr2-ug (update-graph gr2 #:v-func dbl))
(define gr3 (weighted-graph/directed '((10 a b) (11 b c))))
(define new-gr3 (update-graph gr3
#:v-func dbl
#:e-func (λ (x) (* 2 (cast x Number)))))
#:e-func (λ (x)
(assert x number?)
(* 2 x))))
(check-false (has-vertex? new-gr1-ug 'a))
(check-true (has-vertex? new-gr1-ug 'aa))