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41 lines
1.6 KiB
Racket
41 lines
1.6 KiB
Racket
3 years ago
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#lang debug racket/base
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(require racket/list
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racket/string
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racket/format
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racket/match
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"quad.rkt"
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"compile.rkt"
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"struct.rkt"
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"layout.rkt")
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(provide (all-defined-out))
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(define-pass (make-drawing-insts qs)
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#:precondition (list-of has-position?)
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#:postcondition (list-of $drawing-inst?)
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(flatten
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(list ($doc 'start) ($page 'start)
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(for/list ([q (in-list qs)])
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(cond
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[(quad? q)
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(list ($move (quad-posn q)) ($text (char->integer (quad-char q))))]
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[else (error 'render-unknown-thing)]))
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($page 'end) ($doc 'end))))
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(define valid-tokens '(doc-start doc-end page-start page-end text move))
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(define-pass (stackify xs)
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#:precondition (λ (xs) (and (list? xs) (andmap $drawing-inst? xs)))
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#:postcondition string?
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(define move-points (map $move-posn (filter $move? xs)))
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(define xmax (add1 (apply max (map $point-x move-points))))
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(define ymax (add1 (apply max (map $point-y move-points))))
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(string-join
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(for/list ([x (in-list xs)])
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(string-join (map ~a (match x
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[($move ($point x y)) (list y x 'move)]
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[($text charint) (list charint 'text)]
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[($doc 'start) '(doc-start)]
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[($doc 'end) '(doc-end)]
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[($page 'start) (list ymax xmax 'page-start)]
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[($page 'end) '(page-end)]
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[_ (error 'unknown-drawing-inst)])) " ")) "\n"))
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