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25 lines
694 B
Racket
25 lines
694 B
Racket
#lang br/quicklang
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;; http://adventofcode.com/2016/day/12
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(provide read-syntax)
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(define (read-syntax path port)
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(strip-bindings
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#`(module mod "lang.rkt"
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#,@(for/list ([str (in-lines port)]
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#:when (not (equal? str "")))
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(format-datum `(handle ,@(map string->symbol (string-split str))))))))
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(define (mb . INSTS)
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#'(#%module-begin
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(define insts (list . INSTS))
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(define regs (make-hash '((a . 0)(b . 0)(c . 0)(d . 0))))
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(let loop ([ptr 0])
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(define inst (list-ref insts ptr))
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(inst regs))))
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(provide (rename-out [mb #%module-begin]))
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(define-macro-cases handle
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[(_ cpy X Y) #'(λ(regs) 42)])
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(provide handle)
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