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macrotic-sugar.scm
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macrotic-sugar.scm
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;; this file contains macro definitions by define-macro
;;
;; originally made for BiwaScheme and tested also with Bigloo Scheme
;;
;; author: Damien MATTEI
;;
;; email: [email protected]
;;
;; rewrote for Bigloo Scheme
;; (define-macro (print arg)
;; `(begin
;; (display ,arg)
;; (newline)))
(define-macro (when test s1 . Larg)
`(if ,test
(begin ,s1 ,@Larg)
#f))
;; (define i 0)
;; (do-while (< i 4) (print "toto") (set! i (+ i 1)) )
;; toto
;; toto
;; toto
;; toto
(define-macro (do-while pred b1 . Larg)
`(let loop ()
(begin ,b1 ,@Larg)
(when ,pred (loop))))
;; (do (print i) (if (< i 4) (print "inf") (print "sup")) (set! i (+ i 1)) while (< i 4))
;; 0
;; inf
;; 1
;; inf
;; 2
;; inf
;; 3
;; inf
(define-macro (do7 b1 . Larg)
(let ((lst (gensym)) ;; list
(rev-lst (gensym)) ;; reversed list
(pred (gensym)) ;; predicate
(q-while (gensym)) ;; should be (quote while) or single while ?
(lst-instr (gensym))) ;; instructions to execute list
`(let ((,lst (cons
(quote ,b1)
(quote ,Larg))) ;; list
(,rev-lst '()) ;; reversed list
(,pred '()) ;; predicate
(,q-while '()) ;; should be (quote while) or single while ?
(,lst-instr '())) ;; instructions to execute list
(if (< (length ,lst) 2)
"ERROR: too few arguments: must not be less than 2"
(begin
(set! ,rev-lst (reverse ,lst))
(set! ,pred (car ,rev-lst))
(set! ,q-while (car (cdr ,rev-lst)))
(if (not
(or (equal? ,q-while (quote while))
(equal? ,q-while (quote WHILE))))
"ERROR: WHILE key-word not found"
(begin
(set! ,lst-instr (reverse
(cdr
(cdr ,rev-lst))))
(let loop ()
(map eval ,lst-instr)
(if (eval ,pred) (loop))))))))))
(define-macro (do1 b1 . Larg)
(let ((lst (gensym)) ;; list
(rev-lst (gensym)) ;; reversed list
(pred (gensym)) ;; predicate
(q-while (gensym)) ;; MUST be (quote while)
(lst-instr (gensym))) ;; instructions to execute list
(print "do")
`(let ((,lst (cons
(quote ,b1)
(quote ,Larg))) ;; list
(,rev-lst '()) ;; reversed list
(,pred '()) ;; predicate
(,q-while '()) ;; MUST be (quote while)
(,lst-instr '())) ;; instructions to execute list
(print "passed")
(if (< (length ,lst) 2)
(print "ERROR: too few arguments: must not be less than 2")
(begin
(set! ,rev-lst (reverse ,lst))
(print ,rev-lst)
(set! ,pred (car ,rev-lst))
(set! ,q-while (car (cdr ,rev-lst)))
(print ,pred)
(print ,q-while)
(print "passed")
(if (not
(or (equal? ,q-while (quote while))
(equal? ,q-while (quote WHILE))))
(print "ERROR: WHILE key-word not found")
(begin
(print "passed 2")
(set! ,lst-instr (reverse
(cdr
(cdr ,rev-lst))))
;;(set! ,lst-instr (list 'quote ,lst-instr)
(print "passed set!")
(print ,lst-instr)
(let loop ()
(map eval ,lst-instr)
(if (eval ,pred) (loop))))))))))
(define-macro (do5 b1 . Larg)
`(let ((lst (cons
(quote ,b1)
(quote ,Larg))) ;; list
(rev-lst '()) ;; reversed list
(pred '()) ;; predicate
(q-while '()) ;; MUST be (quote while)
(lst-instr '())) ;; instructions to execute list
(print lst)
(print "passed")
(if (< (length lst) 2)
(print "ERROR: too few arguments: must not be less than 2")
(begin
(set! rev-lst (reverse lst))
(print rev-lst)
(set! pred (car rev-lst))
(set! q-while (car (cdr rev-lst)))
(print pred)
(print q-while)
(print "passed")
(if (not
(or (equal? q-while (quote while))
(equal? q-while (quote WHILE))))
(print "ERROR: WHILE key-word not found")
(begin
(print "passed 2")
(set! lst-instr (reverse
(cdr
(cdr rev-lst))))
(print "passed set!")
(print lst-instr)
(let loop ()
(map eval lst-instr)
(if (eval pred) (loop)))))))))
(define-macro (do6 b1 . Larg)
(let ((lst (cons b1 Larg)) ;; list
(rev-lst '()) ;; reversed list
(pred '()) ;; predicate
(q-while '()) ;; MUST be (quote while)
(lst-instr '())) ;; instructions to execute list
(print lst)
(print "passed")
(if (< (length lst) 2)
(print "ERROR: too few arguments: must not be less than 2")
(begin
(set! rev-lst (reverse lst))
(print rev-lst)
(set! pred (car rev-lst))
(set! q-while (car (cdr rev-lst)))
(print pred)
(print q-while)
(print "passed")
(if (not
(or (equal? q-while (quote while))
(equal? q-while (quote WHILE))))
(print "ERROR: WHILE key-word not found")
(begin
(print "passed 2")
(set! lst-instr (reverse
(cdr
(cdr rev-lst))))
(print "passed set!")
(print lst-instr)
(let loop ()
(map eval lst-instr)
(if (eval pred) (loop)))))))))