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* cleanup of pairs.ss

This commit is contained in:
Abdulaziz Ghuloum 2007-05-08 19:19:50 -04:00
parent 1948dd5942
commit 0e1fcc18c3
2 changed files with 51 additions and 294 deletions
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@ -36,297 +36,54 @@
(define err
(lambda (who x)
(error who "invalid list structure ~s" x)))
(define car
(lambda (orig)
(if (pair? orig) ($car orig) (err 'car orig))))
(define cdr
(lambda (orig)
(if (pair? orig) ($cdr orig) (err 'cdr orig))))
(define caar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x) ($car x) (err 'caar orig)))
(err 'caar orig))))
(define cadr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x) ($car x) (err 'cadr orig)))
(err 'cadr orig))))
(define cdar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x) ($cdr x) (err 'cdar orig)))
(err 'cdar orig))))
(define cddr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x) ($cdr x) (err 'cddr orig)))
(err 'cddr orig))))
(define caaar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($car x) (err 'caaar orig)))
(err 'caaar orig)))
(err 'caaar orig))))
(define caadr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($car x) (err 'caadr orig)))
(err 'caadr orig)))
(err 'caadr orig))))
(define cadar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($car x) (err 'cadar orig)))
(err 'cadar orig)))
(err 'cadar orig))))
(define caddr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($car x) (err 'caddr orig)))
(err 'caddr orig)))
(err 'caddr orig))))
(define cdaar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($cdr x) (err 'cdaar orig)))
(err 'cdaar orig)))
(err 'cdaar orig))))
(define cdadr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($cdr x) (err 'cdadr orig)))
(err 'cdadr orig)))
(err 'cdadr orig))))
(define cddar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($cdr x) (err 'cddar orig)))
(err 'cddar orig)))
(err 'cddar orig))))
(define cdddr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($cdr x) (err 'cdddr orig)))
(err 'cdddr orig)))
(err 'cdddr orig))))
(define caaaar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($car x) (err 'caaaar orig)))
(err 'caaaar orig)))
(err 'caaaar orig)))
(err 'caaaar orig))))
(define caaadr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($car x) (err 'caaadr orig)))
(err 'caaadr orig)))
(err 'caaadr orig)))
(err 'caaadr orig))))
(define caadar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($car x) (err 'caadar orig)))
(err 'caadar orig)))
(err 'caadar orig)))
(err 'caadar orig))))
(define caaddr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($car x) (err 'caaddr orig)))
(err 'caaddr orig)))
(err 'caaddr orig)))
(err 'caaddr orig))))
(define cadaar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($car x) (err 'cadaar orig)))
(err 'cadaar orig)))
(err 'cadaar orig)))
(err 'cadaar orig))))
(define cadadr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($car x) (err 'cadadr orig)))
(err 'cadadr orig)))
(err 'cadadr orig)))
(err 'cadadr orig))))
(define caddar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($car x) (err 'caddar orig)))
(err 'caddar orig)))
(err 'caddar orig)))
(err 'caddar orig))))
(define cadddr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($car x) (err 'cadddr orig)))
(err 'cadddr orig)))
(err 'cadddr orig)))
(err 'cadddr orig))))
(define cdaaar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($cdr x) (err 'cdaaar orig)))
(err 'cdaaar orig)))
(err 'cdaaar orig)))
(err 'cdaaar orig))))
(define cdaadr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($cdr x) (err 'cdaadr orig)))
(err 'cdaadr orig)))
(err 'cdaadr orig)))
(err 'cdaadr orig))))
(define cdadar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($cdr x) (err 'cdadar orig)))
(err 'cdadar orig)))
(err 'cdadar orig)))
(err 'cdadar orig))))
(define cdaddr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x) ($cdr x) (err 'cdaddr orig)))
(err 'cdaddr orig)))
(err 'cdaddr orig)))
(err 'cdaddr orig))))
(define cddaar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($cdr x) (err 'cddaar orig)))
(err 'cddaar orig)))
(err 'cddaar orig)))
(err 'cddaar orig))))
(define cddadr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($car x)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($cdr x) (err 'cddadr orig)))
(err 'cddadr orig)))
(err 'cddadr orig)))
(err 'cddadr orig))))
(define cdddar
(lambda (orig)
(if (pair? orig)
(let ([x ($car orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($cdr x) (err 'cdddar orig)))
(err 'cdddar orig)))
(err 'cdddar orig)))
(err 'cdddar orig))))
(define cddddr
(lambda (orig)
(if (pair? orig)
(let ([x ($cdr orig)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x)
(let ([x ($cdr x)])
(if (pair? x) ($cdr x) (err 'cddddr orig)))
(err 'cddddr orig)))
(err 'cddddr orig)))
(err 'cddddr orig)))))
(define-syntax cxr
(syntax-rules ()
[(_ err $car/$cdr)
(lambda (x)
(if (pair? x) ($car/$cdr x) err))]
[(_ err rest ... $car/$cdr)
(lambda (x)
(if (pair? x)
((cxr err rest ...) ($car/$cdr x))
err))]))
(define-syntax define-cxr*
(syntax-rules ()
[(_ [name* ops** ...] ...)
(begin
(define name*
(lambda (x) ((cxr (err 'name* x) ops** ...) x)))
...)]))
(define-cxr*
[car $car]
[cdr $cdr]
[caar $car $car]
[cdar $cdr $car]
[cadr $car $cdr]
[cddr $cdr $cdr]
[caaar $car $car $car]
[cdaar $cdr $car $car]
[cadar $car $cdr $car]
[cddar $cdr $cdr $car]
[caadr $car $car $cdr]
[cdadr $cdr $car $cdr]
[caddr $car $cdr $cdr]
[cdddr $cdr $cdr $cdr]
[caaaar $car $car $car $car]
[cdaaar $cdr $car $car $car]
[cadaar $car $cdr $car $car]
[cddaar $cdr $cdr $car $car]
[caadar $car $car $cdr $car]
[cdadar $cdr $car $cdr $car]
[caddar $car $cdr $cdr $car]
[cdddar $cdr $cdr $cdr $car]
[caaadr $car $car $car $cdr]
[cdaadr $cdr $car $car $cdr]
[cadadr $car $cdr $car $cdr]
[cddadr $cdr $cdr $car $cdr]
[caaddr $car $car $cdr $cdr]
[cdaddr $cdr $car $cdr $cdr]
[cadddr $car $cdr $cdr $cdr]
[cddddr $cdr $cdr $cdr $cdr]))