JS Nile compiler missing NileParser

[djdeath]

Trying to get the Nile browser compiler in compiler/js/nile-compiler.html to work, I get a browser error :

ReferenceError: NileParser is not defined

Not sure if something's missing or the parser js file wasn't generated.

[djdeath]

Actually it works in Firefox, just fails in Chrome...

[damelang]

Yeah, that sounds familiar. I think it has something to do with the way the nile-grammer.ojs file is dynamically loaded. Like some browsers will block the load because of different policies on local file reading or something.

I'm not currently in a position to fix this, maybe early next year. The whole JS-based Nile compiler/runtime stuff needs a rewrite anyway, since the Nile language has evolved quite a bit since I last worked on the JS stuff.

[uhbif19]

@djdeath @damelang

I found what causes this. Chrome blocks AJAX request for .ojs file loading, by CORS poilcy. This is well-known problem, not related to Nile.

To get over it, you need to get compiler page from local HTTP server. If you have Python installed you can start server like this:

cd compilers/js
python -m http.server 8000

The compiler will be available on http://localhost:8000/nile-compiler.html then.

Nonetheless, the compiler is not very simple to work with. For example, then you made a syntax error in your code, there will be no error showed, just running it will do nothing.