14 lines
409 B
Racket
14 lines
409 B
Racket
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#lang brag
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tA-program : tA-start tA-blank tA-accept tA-state-set
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tA-start : "@" tA-state-id
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tA-blank : "%" tA-symbol
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tA-accept : "!" tA-state-id
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tA-state-set : tA-state (tA-state)*
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tA-state : ":" tA-state-id tA-tran-set
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tA-tran-set : (tA-tran)* (NL)*
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tA-tran : tA-symbol "~" tA-symbol tA-dir tA-state-id (NL)*
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tA-symbol : TA-STRING
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tA-state-id : TA-STRING
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tA-dir : "<" | ">"
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