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2 points by Pauan 4358 days ago | link | parent

I just made some changes to Nulan's parser. Now almost all the syntax is customizable:

https://github.com/Pauan/nulan/commit/b13e6477726cc111af4c23...

The changes are: renamed "action" to "parse", added in a "vertical" option, added in a "tokenize" function.

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Now, significant whitespace is hardcoded, numbers are always 0-9, and symbols are anything that isn't a number or delimiter.

But everything else is customizable. Everything. Even comments, strings, and space/newline is customizable.

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The new "tokenize" function lets you fairly easily add in new tokenizers, which is what string/comment/space/newline does.

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The new "vertical" option is pretty cool too. It's currently only used by "|" and it means that this:

  foo bar
    | qux 1 2 3
    | corge 4 5 6
Is parsed like this:

  {foo bar
    | {qux 1 2 3
       corge 4 5 6}}
But the "|" syntax also specifies "separator", so it's further parsed to this:

  {foo bar
    | {{qux 1 2 3}
       {corge 4 5 6}}}
After running the "parse" functions, the final result is this:

  {foo bar
    {| {qux 1 2 3}
       {corge 4 5 6}}}
By the way, "|" is just like "do" in Arc, but I think it looks a lot nicer.