EBNF Grammar for C
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This is EBNF grammar for ANSI C (C99) and it contains almost every rule. It may be missing stuff, please tell me if you notice something missing.

I am writing a C compiler, with my backend and hopefully my own frontend in OCaml. That is why I wrote this grammar. I also have written the AWK grammar, but it’s not uploaded anywhere. Tell me if you want it.

Thanks.

  • ChubakPDP11+TakeWithGrainOfSaltOP
    2•4 months ago

    I think digraphs and trigraphs are part of the preprocessor? I did not add any preprocessor stuff to this grammar. I am adding them to the new version I am working on.

    I have read the C17 standard fully and I did recall it from memory from time to time but it seems like I had forgotten a lot of stuff. I am redefining it, and I am redigning my AWK grammar too.

    I am hoping I could perhaps make a Github pages website called Internet Grammar Database and have all sorts of grammar inside it. Thoughts?

    • @[email protected]
      1•4 months ago

      Trigraphs are handled by the preprocessor, so if you’re not handling that, then that’s fine. Digraphs are handled by the tokenizer, however.

      • ChubakPDP11+TakeWithGrainOfSaltOP
        2•4 months ago

        Cool, I am making a second version were things are cleaner, I will add digraphs, trigraphs and preprocessor directives to the gramamr as wel. Thanks.

    • @[email protected]
      1•4 months ago

      I love grammars. It’s like an API or a data schema, but for a language. This would be very cool and I would love to see it!