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11 lines
311 B
Racket
11 lines
311 B
Racket
#lang brag
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top : (fun | app)*
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fun : /"fun" var /"(" argvars /")" /"=" expr
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/argvars : [var (/"," var)*]
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@expr : add-or-sub
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add-or-sub : [add-or-sub ("+" | "-")] mult-or-div
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mult-or-div : [mult-or-div ("*" | "/")] value
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@value : var | INT | app | /"(" expr /")"
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app : var /"(" [expr (/"," expr)*] /")"
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@var : ID |