624 lines
22 KiB
Scheme
624 lines
22 KiB
Scheme
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(let ()
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(define (pretty-width) 80)
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(define (pretty-indent) 1)
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(define-record cbox (length boxes))
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(define-record sbox (length string))
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(define-record pbox (length ls last))
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(define-record mbox (length str val))
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(define-record vbox (length ls))
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(define-record fbox (length box* sep*))
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(define (box-length x)
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(cond
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[(string? x) (string-length x)]
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[(cbox? x) (cbox-length x)]
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[(sbox? x) (sbox-length x)]
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[(pbox? x) (pbox-length x)]
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[(mbox? x) (mbox-length x)]
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[(vbox? x) (vbox-length x)]
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[(fbox? x) (fbox-length x)]
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[else (error 'boxify "invalid box ~s" x)]))
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(define (boxify x)
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(define (conc . a*)
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(let ([n
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(let f ([a* a*] [len 0])
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(cond
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[(null? a*) len]
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[else
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(f (cdr a*) (fx+ len (box-length (car a*))))]))])
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(make-cbox n a*)))
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(define (boxify-list ls alt-fmt*)
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(define (sum-box* ls)
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(cond
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[(null? (cdr ls))
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(fx+ (box-length (car ls)) 2)]
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[else
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(fx+ (box-length (car ls))
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(fxadd1 (sum-box* (cdr ls))))]))
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(define (gensep*-default ls)
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(cond
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[(null? (cdr ls)) '()]
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[else
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(cons (pretty-indent) (gensep*-default (cdr ls)))]))
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(define (tab-value x)
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(cond
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[(eq? x 'tab) (pretty-indent)]
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[(fixnum? x) x]
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[else #f]))
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(define (select-alt alt-fmt* ls)
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(define (good-match? fmt ls)
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(cond
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[(not (pair? fmt)) #t]
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[(eq? (car fmt) 'read-macro)
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(and (list? ls) (fx= (length ls) 2))]
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[else
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(let ([a (car fmt)] [fmt (cdr fmt)])
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(cond
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[(or (eq? a 'tab) (fixnum? a))
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(good-match? fmt ls)]
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[(and (pair? fmt) (eq? (car fmt) '...))
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(and (list? ls)
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(andmap (lambda (x) (good-match? a x)) ls))]
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[(pair? ls)
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(and (good-match? a (car ls))
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(good-match? fmt (cdr ls)))]
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[else #f]))]))
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(ormap (lambda (fmt) (and (good-match? fmt ls) fmt))
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alt-fmt*))
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(define (applicable-formats a alt-fmt*)
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(cond
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[(and (symbol? a) (getprop a *pretty-format*)) =>
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(lambda (fmt)
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(cond
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[(and (pair? fmt) (eq? (car fmt) 'alt))
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(append alt-fmt* (cdr fmt))]
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[else
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(append alt-fmt* (list fmt))]))]
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[(null? alt-fmt*) #f]
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[else alt-fmt*]))
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(define (return sep* box*)
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(let ([n (sum-box* box*)])
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(make-fbox n box* sep*)))
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(let ([a (car ls)])
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(cond
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[(applicable-formats a alt-fmt*) =>
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(lambda (fmt*)
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(let ([fmt (select-alt fmt* ls)])
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(module (fmt-dots? skip-fmt fmt-tab sub-fmt)
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(define (parse-fmt x)
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(define (parse-dots tab fmt x)
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(cond
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[(and (pair? x) (eq? (car x) '...))
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(values tab fmt #t (cdr x))]
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[else
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(values tab fmt #f x)]))
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(define (parse-tab tab x)
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(cond
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[(pair? x)
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(parse-dots tab (car x) (cdr x))]
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[else (values tab #f #f #f)]))
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(cond
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[(pair? x)
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(let ([a0 (car x)])
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(cond
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[(eq? a0 'tab)
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(parse-tab (pretty-indent) (cdr x))]
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[(fixnum? a0)
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(parse-tab a0 (cdr x))]
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[else (parse-tab #f x)]))]
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[else (values (pretty-indent) #f #f #f)]))
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(define (fmt-dots? x)
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(let-values ([(tab subfmt dots fmt) (parse-fmt x)])
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dots))
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(define (fmt-tab x)
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(let-values ([(tab subfmt dots fmt) (parse-fmt x)])
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tab))
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(define (sub-fmt x)
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(let-values ([(tab subfmt dots fmt) (parse-fmt x)])
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subfmt))
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(define (skip-fmt x)
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(let-values ([(tab subfmt dots fmt) (parse-fmt x)])
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fmt)))
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(define (boxify/fmt fmt x)
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(cond
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[(and (pair? fmt) (pair? x) (list? x))
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(boxify-list x
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(if (eq? (car fmt) 'alt)
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(cdr fmt)
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(list fmt)))]
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[else (boxify x)]))
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(define (read-macro? x)
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(and (pair? x) (eq? (car x) 'read-macro)))
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(cond
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[(read-macro? fmt)
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(conc (cdr fmt) (boxify (cadr ls)))]
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[(fmt-dots? fmt)
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(return (fmt-tab fmt)
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(map (lambda (x) (boxify/fmt (sub-fmt fmt) x))
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ls))]
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[else
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(let-values ([(sep* ls)
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(let f ([fmt (skip-fmt fmt)] [ls (cdr ls)])
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(cond
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[(null? ls)
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(values '() '())]
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[(fmt-dots? fmt)
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(values (fmt-tab fmt)
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(map (lambda (x)
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(boxify/fmt (sub-fmt fmt) x))
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ls))]
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[else
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(let-values ([(f^ l^)
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(f (skip-fmt fmt) (cdr ls))])
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(values (cons (fmt-tab fmt) f^)
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(cons (boxify/fmt
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(sub-fmt fmt)
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(car ls))
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l^)))]))])
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(return sep* (cons (boxify/fmt (sub-fmt fmt) a) ls)))])))]
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[else
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(return (gensep*-default ls) (map boxify ls))])))
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(define (boxify-string x)
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(define (count s i j n)
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(cond
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[(fx= i j) n]
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[else
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(let ([c (string-ref s i)])
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(let ([int (char->integer c)])
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(cond
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[(assv int string-esc-table) =>
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(lambda (t)
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(count s (fxadd1 i) j
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(fx+ (fx+ n 1) (string-length (cdr t)))))]
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[(and (fx<= 32 int) (fx<= int 127))
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(count s (fxadd1 i) j (fxadd1 n))]
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[else
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(count s (fxadd1 i) j (fx+ n 3))])))]))
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(let ([n (string-length x)])
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(let ([m (count x 0 n 0)])
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(if (fx= n m)
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(conc "\"" x "\"")
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(make-sbox (fx+ m 2) x)))))
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(define (boxify-pair x)
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(let-values ([(ls last)
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(let f ([x x])
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(cond
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[(pair? x)
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(let ([a (boxify (car x))])
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(let-values ([(ls last) (f (cdr x))])
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(values (cons a ls) last)))]
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[else
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(values '() (boxify x))]))])
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(let ([n
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(let f ([ls ls] [n 4])
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(cond
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[(null? ls) n]
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[else
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(f (cdr ls)
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(fx+ (fxadd1 n) (box-length (car ls))))]))])
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(make-pbox (fx+ n (box-length last)) ls last))))
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(define (boxify-vector x)
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(let ([ls (map boxify (vector->list x))])
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(let ([n
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(let f ([ls ls] [n 0])
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(cond
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[(null? ls) n]
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[else
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(f (cdr ls) (fx+ n (box-length (car ls))))]))])
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(make-vbox (fx+ (fx+ n 2) (vector-length x)) ls))))
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(cond
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[(string? x) (boxify-string x)]
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[(null? x) "()"]
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[(vector? x) (boxify-vector x)]
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[(list? x) (boxify-list x '())]
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[(pair? x) (boxify-pair x)]
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[else (format "~s" x)]))
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(define string-esc-table
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'((7 . "a")
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(8 . "b")
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(9 . "t")
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(10 . "n")
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(11 . "v")
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(12 . "f")
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(13 . "r")
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(34 . "\"")
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(92 . "\\")))
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(define (hexify n)
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(cond
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[(fx< n 10) (integer->char (fx+ n (char->integer #\0)))]
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[else (integer->char (fx+ (fx- n 10) (char->integer #\A)))]))
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(define (output x p)
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(define (output-sbox x p col)
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(display #\" p)
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(let ([str (sbox-string x)])
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(let f ([i 0] [n (string-length str)] [str str] [p p] [col col])
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(cond
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[(fx= i n)
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(display #\" p)
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(fx+ col 2)]
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[else
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(let ([c (string-ref str i)])
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(let ([int (char->integer c)])
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(cond
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[(assv int string-esc-table) =>
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(lambda (t)
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(display #\\ p)
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(display (cdr t) p)
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(f (fxadd1 i) n str p
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(fx+ col (fxadd1 (string-length (cdr t))))))]
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[(and (fx<= 32 int) (fx<= int 127))
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(display c p)
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(f (fxadd1 i) n str p (fxadd1 col))]
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[else
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(display #\\ p)
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(display (hexify (fxquotient int 16)) p)
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(display (hexify (fxremainder int 16)) p)
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(f (fxadd1 i) n str p
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(fx+ col 3))])))]))))
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(define (output-cbox x p col)
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(let g ([ls (cbox-boxes x)] [p p] [col col])
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(cond
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[(null? ls) col]
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[else
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(g (cdr ls) p
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(f (car ls) p col))])))
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(define (tab col p)
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(newline p)
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(let f ([col col] [p p])
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(unless (fxzero? col)
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(display #\space p)
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(f (fxsub1 col) p))))
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(define (output-pbox x p col)
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(define (pbox-one-line x p col)
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(display "(" p)
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(let g ([ls (pbox-ls x)]
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[p p]
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[col (fx+ col 1)]
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[last (pbox-last x)])
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(cond
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[(null? ls)
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(display ". " p)
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(let ([col (f last p (fx+ col 2))])
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(display ")" p)
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(fx+ col 1))]
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[else
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(let ([col (f (car ls) p col)])
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(display " " p)
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(g (cdr ls) p (fx+ col 1) last))])))
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(define (pbox-multi-fill x p col)
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(display "(" p)
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(let g ([ls (cdr (pbox-ls x))]
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[p p]
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[start-col (fx+ col 1)]
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[col (f (car (pbox-ls x)) p (fx+ col 1))]
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[last (pbox-last x)])
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(cond
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[(null? ls)
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(let ([n (box-length last)])
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(let ([col
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(cond
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[(fx<= (fx+ (fx+ col n) 4) (pretty-width))
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(display " . " p)
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(fx+ col 3)]
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[else
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(tab start-col p)
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(display ". " p)
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(fx+ start-col 2)])])
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(let ([col (f last p col)])
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(display ")" p)
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(fx+ col 1))))]
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[(fx<= (fx+ (fx+ col 1) (box-length (car ls)))
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(pretty-width))
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(display " " p)
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(g (cdr ls) p start-col
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(f (car ls) p (fx+ col 1))
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last)]
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[else
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(tab start-col p)
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(g (cdr ls) p start-col
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(f (car ls) p start-col)
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last)])))
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(cond
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[(fx<= (fx+ col (pbox-length x)) (pretty-width))
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(pbox-one-line x p col)]
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[else
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(pbox-multi-fill x p col)]))
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(define (output-mbox x p col)
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(display (mbox-str x) p)
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(f (mbox-val x) p (fx+ col (string-length (mbox-str x)))))
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(define (output-vbox x p col)
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(let ([ls (vbox-ls x)])
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(cond
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[(null? ls)
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(display "#()" p)
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(fx+ col 3)]
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[else
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(display "#(" p)
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(let g ([ls (cdr ls)] [p p]
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[col (f (car ls) p (fx+ col 2))]
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[start (fx+ col 2)])
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(cond
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[(null? ls)
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(display ")" p)
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(fx+ col 1)]
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[(fx<= (fx+ (fx+ col 1) (box-length (car ls))) (pretty-width))
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(display " " p)
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(g (cdr ls) p
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(f (car ls) p (fx+ col 1))
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start)]
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[else
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(tab start p)
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(g (cdr ls) p
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(f (car ls) p start)
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start)]))])))
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(define (output-fbox x p col)
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(define (output-rest-cont box* sep* p col left)
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(cond
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[(null? box*) col]
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[(pair? sep*)
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(let* ([box (car box*)]
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[sep (car sep*)]
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[w (box-length box)])
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(cond
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[(fx<= (fx+ (fxadd1 w) col) (pretty-width))
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(display " " p)
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(output-rest-cont (cdr box*) (cdr sep*) p
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(f box p (fxadd1 col)) left)]
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[(not sep)
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(display " " p)
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(output-rest-multi (cdr box*) (cdr sep*) p
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(f box p (fxadd1 col)) left)]
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[else
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(let ([col (fx+ left sep)])
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(tab col p)
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(cond
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[(fx<= (fx+ w col) (pretty-width))
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(output-rest-cont (cdr box*) (cdr sep*) p
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(f box p col) left)]
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[else
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(output-rest-multi (cdr box*) (cdr sep*) p
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(f box p col) left)]))]))]
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[else
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(output-last-cont box* sep* p col left)]))
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(define (output-last-cont box* sep p col left)
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(define (sum ls)
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(cond
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[(null? ls) 0]
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[else (fx+ (box-length (car ls))
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(fxadd1 (sum (cdr ls))))]))
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(cond
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[(not sep)
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(output-rest-cont box* '(#f . #f) p col left)]
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[(fx<= (fx+ (sum box*) col) (pretty-width))
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(let g ([box* box*] [p p] [col col])
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(cond
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[(null? box*) col]
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[else
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(display " " p)
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(g (cdr box*) p (f (car box*) p (fxadd1 col)))]))]
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[else
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(let g ([box* box*] [p p] [left (fx+ left sep)] [col col])
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(cond
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[(null? box*) col]
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[else
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(tab left p)
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(g (cdr box*) p left
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(f (car box*) p left))]))]))
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(define (output-last-multi box* sep p col left)
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(define (sum ls)
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(cond
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[(null? ls) 0]
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[else (fx+ (box-length (car ls))
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(fxadd1 (sum (cdr ls))))]))
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(cond
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[(not sep)
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(output-rest-multi box* '(#f . #f) p col left)]
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#;[(fx<= (fx+ (sum box*) col) (pretty-width))
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(let g ([box* box*] [p p] [col col])
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(cond
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[(null? box*) col]
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[else
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(display " " p)
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(g (cdr box*) p (f (car box*) p (fxadd1 col)))]))]
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[else
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(let g ([box* box*] [p p] [left (fx+ left sep)] [col col])
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(cond
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[(null? box*) col]
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[else
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(tab left p)
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(g (cdr box*) p left
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(f (car box*) p left))]))]))
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(define (output-rest-multi box* sep* p col left)
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(cond
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[(null? box*) col]
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[(pair? sep*)
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(let* ([box (car box*)]
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[sep (car sep*)]
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[w (box-length box)])
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(cond
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[(not sep)
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(display " " p)
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(output-rest-multi (cdr box*) (cdr sep*) p
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(f box p (fxadd1 col)) left)]
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[else
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(let ([col (fx+ left sep)])
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(tab col p)
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(cond
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[(fx<= (fx+ w col) (pretty-width))
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(output-rest-cont (cdr box*) (cdr sep*) p
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(f box p col) left)]
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[else
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(output-rest-multi (cdr box*) (cdr sep*) p
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(f box p col) left)]))]))]
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[else (output-last-multi box* sep* p col left)]))
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(define (output-box-init box box* sep* p left)
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(let ([w (box-length box)])
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(cond
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[(fx<= (fx+ w left) (pretty-width))
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(let ([col (f box p left)])
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(output-rest-cont box* sep* p col left))]
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[else
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(let ([col (f box p left)])
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(output-rest-multi box* sep* p col left))])))
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(display "(" p)
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(let ([col (fx+ col 1)]
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[box* (fbox-box* x)]
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[sep* (fbox-sep* x)])
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(let ([col (output-box-init (car box*) (cdr box*) sep* p col)])
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(display ")" p)
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(fx+ col 1))))
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(define (f x p col)
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(cond
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[(string? x)
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(display x p)
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(fx+ col (string-length x))]
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[(cbox? x) (output-cbox x p col)]
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[(sbox? x) (output-sbox x p col)]
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[(pbox? x) (output-pbox x p col)]
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[(mbox? x) (output-mbox x p col)]
|
|
[(vbox? x) (output-vbox x p col)]
|
|
[(fbox? x) (output-fbox x p col)]
|
|
[else (error 'pretty-print-output "invalid ~s" x)]))
|
|
(f x p 0)
|
|
(newline p))
|
|
;;;
|
|
(define (pretty x p)
|
|
;(write x) (newline)
|
|
(let ([x (boxify x)])
|
|
;(write x) (newline)
|
|
(output x p)))
|
|
;;;
|
|
(define *pretty-format* '*pretty-format*)
|
|
(define (set-fmt! name fmt)
|
|
(putprop name *pretty-format* fmt))
|
|
(primitive-set! 'pretty-print
|
|
(case-lambda
|
|
[(x) (pretty x (current-output-port))]
|
|
[(x p)
|
|
(if (output-port? p)
|
|
(pretty x p)
|
|
(error 'pretty-print "~s is not an output port" p))]))
|
|
(set-fmt! 'quote '(read-macro . "'"))
|
|
(set-fmt! 'unquote '(read-macro . ","))
|
|
(set-fmt! 'unquote-splicing '(read-macro . ",@"))
|
|
(set-fmt! 'quasiquote '(read-macro . "`"))
|
|
(set-fmt! 'syntax '(read-macro . "#'"))
|
|
(set-fmt! '|#primitive| '(read-macro . "#%"))
|
|
(set-fmt! 'let '(alt
|
|
(_ (0 [e 0 e] ...) tab e ...)
|
|
(_ x (0 [e 0 e] ...) tab e ...)))
|
|
(set-fmt! 'letrec '(_ (0 [e 0 e] ...) tab e ...))
|
|
(set-fmt! 'let-syntax '(_ (0 [e 0 e] ...) tab e ...))
|
|
(set-fmt! 'letrec-syntax '(_ (0 [e 0 e] ...) tab e ...))
|
|
(set-fmt! 'let* '(_ (0 [e 0 e] ...) tab e ...))
|
|
(set-fmt! 'let-values '(_ (0 [e 0 e] ...) tab e tab e* ...))
|
|
(set-fmt! 'cond '(_ tab [0 e ...] ...))
|
|
(set-fmt! 'define '(_ name tab e tab e ...))
|
|
(set-fmt! 'case-lambda
|
|
'(_ tab [0 e ...] ...))
|
|
(set-fmt! 'record-case
|
|
'(_ e tab [e 0 e ...] ...))
|
|
(set-fmt! 'if '(_ test 3 e ...))
|
|
(set-fmt! 'and '(and test 4 e ...))
|
|
(set-fmt! 'or '(or test 3 e ...))
|
|
(set-fmt! 'begin '(_ tab e ...))
|
|
(set-fmt! 'lambda '(_ fmls tab e tab e* ...))
|
|
(set-fmt! 'case '(_ e tab [e 0 e] ...))
|
|
(set-fmt! 'syntax-rules '(_ kwd* tab [e 0 e] ...))
|
|
(set-fmt! 'syntax-case '(_ expr kwd*
|
|
tab (e 0 e 0 e ...) ...))
|
|
(set-fmt! 'module '(alt (_ (fill ...) tab e ...)
|
|
(_ name (fill ...) tab e ...)))
|
|
)
|
|
|
|
#!eof
|
|
|
|
(define (test x)
|
|
(pretty-print x)
|
|
(printf "====================================\n"))
|
|
|
|
(test 12)
|
|
(test #t)
|
|
(test #f)
|
|
(test (if #f #f))
|
|
(test '())
|
|
(test "string")
|
|
(test "\n")
|
|
(test "\r")
|
|
(test (string (integer->char 0)))
|
|
(test (string (integer->char 240)))
|
|
(test 'hello)
|
|
(test '(foo bar))
|
|
(test '
|
|
(define pp
|
|
(case-lambda
|
|
[(x) (pretty x (current-output-port))]
|
|
[(x p)
|
|
(if (output-port? p)
|
|
(pretty x p)
|
|
(error 'pretty-print "~s is not an output port" p))])))
|
|
|
|
(test '(384 7384 83947 893478 9137489 3894789 134789314 79817238
|
|
97314897 318947138974 981374 89137489 1374897 13498713
|
|
894713894 137894 89137489 1374 891348314 12 17 9000000 . 17))
|
|
|
|
(test '(',,@#''(quote (syntax unquote-splicing . 2) 2)))
|
|
|
|
(test '#(1 2 3))
|
|
|
|
(test '#(384 7384 83947 893478 9137489 3894789 134789314 79817238
|
|
97314897 318947138974 981374 89137489 1374897 13498713
|
|
894713894 137894 89137489))
|
|
|
|
|
|
(define (test-file x)
|
|
(printf "testing file ~s ...\n" x)
|
|
(with-input-from-file x
|
|
(lambda ()
|
|
(let f ([i 0])
|
|
(let ([x (read)] [fname (format "tmp.~a.pp" i)])
|
|
(unless (eof-object? x)
|
|
(let ([y
|
|
(begin
|
|
(call-with-output-file fname
|
|
(lambda (p)
|
|
(pretty-print x p))
|
|
'replace)
|
|
(with-input-from-file fname read))])
|
|
(if (equal? x y)
|
|
(f (fxadd1 i))
|
|
(error 'test-file "mismatch\n\n~s\n\n~s" x y)))))))))
|
|
|
|
;#!eof
|
|
(for-each test-file
|
|
'("fact.ss"
|
|
"libhash.ss"
|
|
"foo.ss"
|
|
"libintelasm.ss"
|
|
"libassembler.ss"
|
|
"libnumerics.ss"
|
|
"libcafe.ss"
|
|
"libposix.ss"
|
|
"libchezio.ss"
|
|
"librecord.ss"
|
|
"libcollect.ss"
|
|
"libtimers.ss"
|
|
"libcompile.ss"
|
|
"libtokenizer.ss"
|
|
"libcontrol.ss"
|
|
"libtoplevel.ss"
|
|
"libcore.ss"
|
|
"libtrace.ss"
|
|
"libcxr.ss"
|
|
"libwriter.ss"
|
|
"libengines.ss"
|
|
"libfasl.ss"
|
|
"libguardians.ss"
|
|
"libpp.ss"
|
|
"self-exporting-module.ss"
|
|
"libhandlers.ss"
|
|
"set-operations.ss"
|
|
"psyntax-7.1.ss"
|
|
))
|
|
|