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Extended Backus–Naur form ([EBNF][]) is a metalanguage used to specify language grammars. [EBNF]: https://en.wikipedia.org/wiki/Extended_Backus–Naur_form
21 lines
306 B
EBNF
21 lines
306 B
EBNF
(*
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Source: https://github.com/io7m/jsom0
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License: ISC
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*)
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digit_without_zero =
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"1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;
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digit =
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"0" | digit_without_zero ;
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positive =
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digit_without_zero , { digit } ;
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natural =
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"0" | positive ;
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real =
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[ "-" ] , digit , [ "." , { digit } ] ;
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