ac26fe7554
Also, updates some of the mzlib files to point at `racket/*' libraries rather than to `scheme/*' ones.
84 lines
2.5 KiB
Racket
84 lines
2.5 KiB
Racket
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(module prog-steps mzscheme
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(require scribble/struct
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scribble/decode
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scribble/manual
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scribble/scheme
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mzlib/kw
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mzlib/class
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mzlib/for)
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(provide prog-steps
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prog-steps/cont
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prog-steps/no-obj)
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(define-syntax prog-steps/no-obj
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(syntax-rules ()
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[(_ [{def ...} prog] ...)
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(*prog-steps
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#f
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#f
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(list (racketblock0 def ...) ...)
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(list (racketblock0 prog) ...))]))
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(define-syntax prog-steps
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(syntax-rules ()
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[(_ [{obj ...} {def ...} prog] ...)
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(*prog-steps
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#f
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(list (racketblock0 obj ...) ...)
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(list (racketblock0 def ...) ...)
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(list (racketblock0 prog) ...))]))
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(define-syntax prog-steps/cont
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(syntax-rules ()
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[(_ [{obj ...} {def ...} prog] ...)
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(*prog-steps
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#t
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(list (racketblock0 obj ...) ...)
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(list (racketblock0 def ...) ...)
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(list (racketblock0 prog) ...))]))
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(define (to-flow e) (make-flow (list (make-paragraph (list e)))))
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(define (*prog-steps cont? objs defs progs)
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(make-table
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'((valignment baseline baseline baseline baseline baseline baseline))
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(apply
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append
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(for/list ([obj (or objs (in-naturals))]
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[def defs]
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[prog progs]
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[i (in-naturals)])
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(let ([l
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(list
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(list (to-flow " ")
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(to-flow (if (and (or (positive? i)
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cont?)
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(not objs))
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'rarr
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" "))
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(to-flow " ")
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(to-flow "defined:")
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(to-flow " ")
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(make-flow (list def)))
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(list (to-flow " ")
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(to-flow " ")
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(to-flow " ")
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(to-flow "evaluate:")
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(to-flow " ")
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(make-flow (list prog))))])
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(if objs
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(cons (list
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(to-flow " ")
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(to-flow (if (or (positive? i)
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cont?)
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'rarr
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" "))
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(to-flow " ")
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(to-flow "objects:")
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(to-flow " ")
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(make-flow (list obj)))
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l)
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l)))))))
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