46 lines
1.4 KiB
Racket
46 lines
1.4 KiB
Racket
#lang racket/base
|
|
(require
|
|
trivial/private/test-common
|
|
(only-in typed/racket/base
|
|
ann : -> String Listof List U Bytes))
|
|
|
|
;; Ill-typed `regexp:` expressions
|
|
;; TODO why can't I catch errors for (ann ... (List String))? WhydoI need #f?
|
|
|
|
|
|
(module+ test (test-compile-error
|
|
#:require trivial/regexp
|
|
#:exn #rx"Type Checker"
|
|
(ann (regexp-match: "hi" "hi")
|
|
(U #f (List String String String)))
|
|
(ann (regexp-match: #rx"(h)(i)" "hi")
|
|
(U #f (List String)))
|
|
(ann (regexp-match: #px"(?<=h)(?=i)" "hi")
|
|
(U #f (List String String String)))
|
|
;;bg; ill-typed in untyped Racket
|
|
(byte-regexp: #rx#"yolo")
|
|
(ann (regexp-match: #rx#"hi" "hi")
|
|
(U #f (List String String)))
|
|
(ann (regexp-match: #px#"hi" "hi")
|
|
(U #f (List Bytes Bytes)))
|
|
(ann (regexp-match: (regexp "he") "hellooo")
|
|
(U #f (List String)))
|
|
(ann (let ()
|
|
(define-regexp: rx (regexp "he(l*)(o*)"))
|
|
(regexp-match: rx "hellooo"))
|
|
(U #f (List String String String)))
|
|
;; `define` doesn't propagate group information
|
|
(ann (let ()
|
|
(define rx "he(l*)(o*)")
|
|
(regexp-match: rx "helloooooooo"))
|
|
(U #f (List String String String)))
|
|
;; -- set! problems
|
|
(ann (let-regexp: ([a #rx"(b)(B)"])
|
|
(set! a #rx"")
|
|
(regexp-match: a "hai"))
|
|
(List String String String))
|
|
;; --- Can't handle |, yet
|
|
(ann (regexp-match: "this(group)|that" "that")
|
|
(U #f (List String String)))
|
|
))
|