6b7c199326
* Rename `make-repeated-sequence-generator' -> `sequence->repeated-generator' * Several tests for `sequence->generator' svn: r17586
277 lines
12 KiB
Scheme
277 lines
12 KiB
Scheme
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(load-relative "loadtest.ss")
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(Section 'for)
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(require scheme/generator)
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(define-syntax (test-multi-generator stx)
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(syntax-case stx ()
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[(_ [(v ...) ...] gen)
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(with-syntax ([(id ...) (generate-temporaries #'((v ...) ...))]
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[(id2 ...) (generate-temporaries #'((v ...) ...))]
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[((v2 ...) ...)
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(apply map list (map syntax->list (syntax->list #'((v ...) ...))))])
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#'(begin
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(test `((v2 ...) ...) 'gen (for/list ([(id ...) gen])
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(list id ...)))
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(test-values `((v ...) ...) (lambda ()
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(for/lists (id2 ...) ([(id ...) gen])
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(values id ...))))
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(test #t 'gen (for/and ([(id ...) gen])
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(and (member (list id ...) `((v2 ...) ...)) #t)))
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(test (list (for/last ([(id ...) gen])
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(list id ...)))
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'gen (for/and ([(id ...) gen])
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(member (list id ...) `((v2 ...) ...))))
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(test (for/first ([(id ...) gen])
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(list id ...))
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'gen (for/or ([(id ...) gen])
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(car (member (list id ...) `((v2 ...) ...)))))
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(void)))]))
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(define-syntax test-generator
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(syntax-rules ()
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[(_ [seq] gen) ; we assume that seq has at least 2 elements, and all are unique
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(begin
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;; Some tests specific to single-values:
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(test `seq 'gen (for/list ([i gen]) i))
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(test `seq 'gen (for/list ([i gen][b gen]) i))
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(test `seq 'gen (for/list ([i gen][b gen]) b))
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(test `seq 'gen (for*/list ([i gen][b '(#t)]) i))
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(test (map (lambda (x) #t) `seq) 'gen (for*/list ([i gen][b '(#t)]) b))
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(test (append `seq `seq) 'gen (for*/list ([b '(#f #t)][i gen]) i))
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(test (append `seq `seq) 'gen (for/list ([b '(#f #t)] #:when #t [i gen]) i))
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(test `seq 'gen (let ([g gen]) (for/list ([i g]) i)))
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(test `seq 'gen (let ([r null])
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(for ([i gen]) (set! r (cons i r)))
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(reverse r)))
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(test `seq 'gen (reverse (for/fold ([a null]) ([i gen])
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(cons i a))))
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(test `seq 'gen (let-values ([(more? next) (sequence-generate gen)])
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(let loop ()
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(if (more?)
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(cons (next) (loop))
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null))))
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(test-values `(seq seq) (lambda ()
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(for/lists (r1 r2) ([id gen])
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(values id id))))
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(test (list (for/last ([i gen]) i)) 'gen (for/and ([i gen]) (member i `seq)))
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(test `seq 'gen (for/or ([i gen]) (member i `seq)))
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(test (for/first ([i gen]) i) 'gen (for/or ([i gen]) (and (member i `seq) i)))
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(test #t 'gen (for/and ([(i k) (in-parallel gen `seq)])
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(equal? i k)))
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(test #f 'gen (for/and ([i gen])
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(member i (cdr (reverse `seq)))))
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(test #f 'gen (for/or ([i gen]) (equal? i 'something-else)))
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(let ([count 0])
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(test #t 'or (for/or ([i gen]) (set! count (add1 count)) #t))
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(test 1 'count count)
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(test #f 'or (for/or ([i gen]) (set! count (add1 count)) #f))
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(test (+ 1 (length `seq)) 'count count)
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(set! count 0)
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(let ([second (for/last ([(i pos) (in-parallel gen (in-naturals))] #:when (< pos 2))
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(set! count (add1 count))
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i)])
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(test second list-ref `seq 1)
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(test 2 values count)
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(for ([i gen] #:when (equal? i second)) (set! count (add1 count)))
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(for* ([i gen] #:when (equal? i second)) (set! count (add1 count)))
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(test 4 values count)
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(for ([i (stop-before gen (lambda (x) (equal? x second)))]) (set! count (add1 count)))
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(test 5 values count)
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(let ([g (stop-before gen (lambda (x) (equal? x second)))])
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(for ([i g]) (set! count (add1 count))))
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(test 6 values count)
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(for ([i (stop-after gen (lambda (x) (equal? x second)))]) (set! count (add1 count)))
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(test 8 values count)
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(let ([g (stop-after gen (lambda (x) (equal? x second)))])
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(for ([i g]) (set! count (add1 count))))
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(test 10 values count))
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(set! count 0)
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(test #t 'and (for/and ([(e idx) (in-indexed gen)]) (set! count (add1 count)) (equal? idx (sub1 count))))
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(test #t 'and (let ([g (in-indexed gen)])
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(set! count 0)
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(for/and ([(e idx) g]) (set! count (add1 count)) (equal? idx (sub1 count)))))
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(void))
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;; Run multi-value tests:
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(test-multi-generator [seq] gen))]
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[(_ seqs gen)
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(test-multi-generator seqs gen)]))
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(test-generator [(0 1 2)] (in-range 3))
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(test-generator [(3 4 5)] (in-range 3 6))
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(test-generator [(7 6 5)] (in-range 7 4 -1))
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(test-generator [(a b c)] '(a b c))
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(test-generator [(a b c)] (in-list '(a b c)))
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(test-generator [(a b c)] #(a b c))
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(test-generator [(a b c)] (in-vector #(a b c)))
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(test-generator [(b c d)] (in-vector #(a b c d) 1))
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(test-generator [(b c d)] (in-vector #(a b c d e) 1 4))
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(test-generator [(b d f)] (in-vector #(a b c d e f g h) 1 7 2))
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(test-generator [(h f d)] (in-vector #(a b c d e f g h) 7 1 -2))
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(test-generator [(b d f)] (in-vector #(a b c d e f g h) 1 6 2))
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(test-generator [(h f d)] (in-vector #(a b c d e f g h) 7 2 -2))
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(test-generator [(#\a #\b #\c)] "abc")
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(test-generator [(#\a #\b #\c)] (in-string "abc"))
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(test-generator [(#\a #\b #\c)] (in-string "zzabc" 2))
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(test-generator [(#\a #\b #\c)] (in-string "zzabc" 2 #f))
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(test-generator [(#\a #\b #\c)] (in-string "zzabcqq" 2 5))
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(test-generator [(#\a #\b #\c)] (in-string "zzaxbyc" 2 #f 2))
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(test-generator [(#\a #\b #\c)] (in-string "zzaxbycy" 2 #f 2))
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(test-generator [(65 66 67)] #"ABC")
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(test-generator [(65 66 67)] (in-bytes #"ABC"))
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(test-generator [(65 66 67)] (in-bytes #"ZZABC" 2))
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(test-generator [(65 66 67)] (in-bytes #"ZZABC" 2 #f))
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(test-generator [(65 66 67)] (in-bytes #"ZZABCQQ" 2 5))
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(test-generator [(65 66 67)] (in-bytes #"ZZAXBYC" 2 #f 2))
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(test-generator [(65 66 67)] (in-bytes #"ZZAXBYCY" 2 #f 2))
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(test-generator [(#\a #\b #\c)] (in-input-port-chars (open-input-string "abc")))
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(test-generator [(65 66 67)] (open-input-bytes #"ABC"))
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(test-generator [(65 66 67)] (in-input-port-bytes (open-input-bytes #"ABC")))
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(test-generator [(1 2 3)] (in-port read (open-input-string "1 2 3")))
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(test-generator [((123) 4)] (in-port read (open-input-string "(123) 4")))
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(test-generator [(65 66 67)] (in-port read-byte (open-input-string "ABC")))
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(test-generator [("abc" "def")] (in-lines (open-input-string "abc\ndef")))
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(test-generator [(#"abc" #"def")] (in-bytes-lines (open-input-string "abc\ndef")))
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(test-generator [(0 1 2 3 4 5)] (in-sequences (in-range 6)))
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(test-generator [(0 1 2 3 4 5)] (in-sequences (in-range 4) '(4 5)))
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(test-generator [(0 1 2 3 4 5)] (in-sequences (in-range 6) '()))
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(test-generator [(0 1 2 3 4 5)] (in-sequences '() (in-range 4) '() '(4 5)))
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(test-generator [(0 1 2 3 4 5)] (in-sequences (in-range 0 2) (in-range 2 4) (in-range 4 6)))
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(test-generator [(0 1 2 3 4 5)] (in-sequences (in-range 0 2)
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(in-sequences (in-range 2 4) (in-range 4 6))))
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(test-generator [(0 1 2 3 #\a #\b #\c) (10 11 12 13 #\A #\B #\C)]
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(in-sequences (in-parallel (in-range 0 4) (in-range 10 14))
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(in-parallel "abc" "ABC")))
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;; use in-parallel to get a finite number of items
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(test-generator [(0 1 2 3 0 1 2 3) (0 1 2 3 4 5 6 7)]
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(in-parallel (in-cycle (in-range 0 4)) (in-range 0 8)))
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(test-generator [(0 1 2 3 4 5 6 7) (0 1 2 0 1 2 0 1)]
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(in-parallel (in-range 0 8) (in-cycle (in-range 0 3))))
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(test-generator [(0 1 2 3 2 1 0 1) (0 1 2 3 4 5 6 7)]
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(in-parallel (in-cycle (in-range 0 4) (in-range 2 0 -1)) (in-range 0 8)))
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(test-generator [(0 1 2) (a b c)] (in-parallel (in-range 3) (in-list '(a b c))))
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(test-generator [(0 1 2) (a b c)] (in-parallel (in-range 10) (in-list '(a b c))))
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(test-generator [(0 1 2) (a b c)] (in-parallel (in-range 3) (in-list '(a b c d))))
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(test-generator [(0 1 2) (a b c)] (in-parallel (in-range 3) '(a b c)))
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(test-generator [(a b c)] (stop-after (in-list '(a b c d e)) (lambda (x) (equal? x 'c))))
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(test-generator [(a b c)] (stop-before (in-list '(a b c d e)) (lambda (x) (equal? x 'd))))
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(test-generator [(3 4 5)] (stop-before (in-naturals 3) (lambda (x) (= x 6))))
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(test-generator [(a b c) (0 1 2)] (in-indexed '(a b c)))
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(test-generator [(1 2 3 4 5)]
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(parameterize ([current-input-port (open-input-string "1 2 3\n4 5")])
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(for/list ([i (in-producer read eof)]) i)))
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(test-generator [(1 2 3 4 5)]
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(for/list ([i (in-producer read eof (open-input-string "1 2 3\n4 5"))]) i))
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(test-generator [("1 2 3" "4 5")]
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(for/list ([i (in-producer read-line eof-object? (open-input-string "1 2 3\n4 5"))]) i))
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(test-generator [((1 2) (3 4) (5 ,eof))]
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(for/list ([(i j)
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(in-producer (lambda (p) (values (read p) (read p)))
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(lambda (x y) (and (eof-object? x) (eof-object? y)))
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(open-input-string "1 2 3\n4 5"))])
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(list i j)))
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(test #hash((a . 1) (b . 2) (c . 3)) 'mk-hash
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(for/hash ([v (in-naturals)]
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[k '(a b c)])
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(values k (add1 v))))
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(test #hasheq((a . 1) (b . 2) (c . 3)) 'mk-hasheq
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(for/hasheq ([v (in-naturals)]
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[k '(a b c)])
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(values k (add1 v))))
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(test #hash((a . 1) (b . 2) (c . 3)) 'cp-hash
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(for/hash ([(k v) #hash((a . 1) (b . 2) (c . 3))])
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(values k v)))
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(test #hash((a . 1) (b . 2) (c . 3)) 'cp-hash
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(for/hash ([(k v) (in-hash #hash((a . 1) (b . 2) (c . 3)))])
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(values k v)))
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(test #hash((a . a) (b . b) (c . c)) 'cp-hash
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(for/hash ([k (in-hash-keys #hash((a . 1) (b . 2) (c . 3)))])
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(values k k)))
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(test #hash((1 . 1) (2 . 2) (3 . 3)) 'cp-hash
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(for/hash ([v (in-hash-values #hash((a . 1) (b . 2) (c . 3)))])
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(values v v)))
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(test 1 'parallel-or-first
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(for/or (((a b) (in-parallel '(1 #f) '(#t #f))))
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a))
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(test 1 'parallel-or-last
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(for/or (((a b) (in-parallel '(#f 1) '(#t #f))))
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a))
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(test #f 'parallel-and-first
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(for/and (((a b) (in-parallel '(1 #f) '(#t #f))))
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a))
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(test #f 'parallel-and-last
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(for/and (((a b) (in-parallel '(#f 1) '(#t #f))))
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a))
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(test '(11) 'in-value (for/list ([i (in-value 11)]) i))
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(let-values ([(more? next) (sequence-generate (in-value 13))])
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(test #t more?)
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(test 13 next)
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(test #f more?))
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(test-generator [(0 1 2)] (in-generator (yield 0) (yield 1) (yield 2)))
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(let ([g (lambda () (in-generator (yield 0) (yield 1) (yield 2)))])
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(test-generator [(0 1 2)] (g)))
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(test '((1 0) (2 1) (3 2)) 'indexed-generator
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(for/list ([(x i) (in-indexed (in-generator (yield 1) (yield 2) (yield 3)))])
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(list x i)))
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(let ([helper (lambda (i)
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(yield (add1 i)))])
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(test '(1 2 3) 'parameterized-yield
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(for/list ([x (in-generator (helper 0) (helper 1) (helper 2))])
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x)))
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(let* ([helper (lambda (pred num)
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(for ([i (in-range 0 3)])
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(yield (pred (+ i num)))))]
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[g1 (generator
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(helper odd? 1)
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(yield 'odd))]
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[g2 (generator
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(helper even? 1)
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(yield 'even))])
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(test '(#t #f #f #t #t #f odd even) 'yield-helper
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(list (g1) (g2) (g1) (g2) (g1) (g2) (g1) (g2))))
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(test '(1 2 3)
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'sequence->generator-1
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(let ([maker (sequence->generator '(1 2 3))])
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(list (maker) (maker) (maker))))
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(test '(1 2 3)
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'sequence->generator-2
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(let ([maker (sequence->generator (in-list '(1 2 3)))])
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(list (maker) (maker) (maker))))
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(test '(0 1 2 3 4)
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'sequence->generator-3
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(let ([maker (sequence->generator (in-range 0 5))])
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(list (maker) (maker) (maker) (maker) (maker))))
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(test '(0 1 2 3 4)
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'sequence->generator-4
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(let ([maker (sequence->generator (in-naturals))])
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(list (maker) (maker) (maker) (maker) (maker))))
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(test '(1 2 3 1 2 3)
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'sequence->repeated-generator
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(let ([maker (sequence->repeated-generator '(1 2 3))])
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(list (maker) (maker) (maker)
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(maker) (maker) (maker))))
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(report-errs)
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