83 lines
3.6 KiB
Racket
83 lines
3.6 KiB
Racket
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#lang racket
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(require "semantics.rkt")
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(provide greater-than
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less-than
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plus
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minus
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period
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comma
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colon
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brackets
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(rename-out [my-module-begin #%module-begin]))
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;; The current-state is a parameter used by the
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;; rest of this language.
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(define current-state (make-parameter (new-state)))
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;; Every module in this language will make sure that it
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;; uses a fresh state.
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(define-syntax-rule (my-module-begin body ...)
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(#%plain-module-begin
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(parameterize ([current-state (new-state)])
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body ...)))
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(define-syntax-rule (greater-than)
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(increment-ptr (current-state)))
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(define-syntax-rule (less-than)
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(decrement-ptr (current-state)))
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(define-syntax-rule (plus)
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(increment-byte (current-state)))
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(define-syntax-rule (minus)
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(decrement-byte (current-state)))
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(define-syntax-rule (period)
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(write-byte-to-stdout (current-state)))
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(define-syntax-rule (comma)
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(read-byte-from-stdin (current-state)))
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(define-syntax-rule (colon)
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(write-number-to-stdout (current-state)))
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(define-syntax-rule (brackets body ...)
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(loop (current-state) body ...))
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#|
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(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)
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(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)
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(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)
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(period)(minus)(minus)(minus)(period)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(period)(period)(plus)(plus)(plus)(period)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)
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(minus)(plus)(plus)(plus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)
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(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)
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(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(plus)(plus)(plus)(plus)(plus)(plus)
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(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(plus)(period)
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(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)
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(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)(comma)(period)(brackets(comma)(period))
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|#
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#|
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;Hello World!
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(plus)(plus)(plus)(plus)(plus) (plus)(plus)(plus)(plus)(plus)
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(brackets
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(greater-than) (plus)(plus)(plus)(plus)(plus) (plus)(plus)
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(greater-than) (plus)(plus)(plus)(plus)(plus) (plus)(plus)
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(plus)(plus)(plus) (greater-than) (plus)(plus)(plus)
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(greater-than) (plus) (less-than)(less-than)(less-than)
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(less-than) (minus))
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(greater-than) (plus)(plus) (period)
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(greater-than) (plus) (period)
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(plus)(plus)(plus)(plus)(plus) (plus)(plus) (period)
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(period) (plus)(plus)(plus) (period)
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(greater-than) (plus)(plus) (period)
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(less-than)(less-than) (plus)(plus)(plus)(plus)(plus)
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(plus)(plus)(plus)(plus)(plus) (plus)(plus)(plus)(plus)(plus)
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(period) (greater-than) (period)
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(plus)(plus)(plus) (period)
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(minus)(minus)(minus)(minus)(minus)(minus)(period)
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(minus)(minus)(minus)(minus)(minus)(minus)(minus)(minus)
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(period)(greater-than) (plus) (period) (greater-than) (period)
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|#
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