Hi, alright. I was really interested in trying to see whether I can figure out what’s going on.
I didn’t quite get it working today and my lack of Flex/Bison understanding is blocking me from figuring out what’s going on. :/ Most changes were done by reviewing everything that touched the integer handling and following all traces of all things it touched. My current work is here: https://github.com/NixOS/nix/compare/master...ctheune:ctheune-floats?expand=1 For some reason, the lexer seems to fail picking up the FLOAT symbol _at all_ and complains: nix-instantiate --eval -E '123.1' error: syntax error, unexpected INT, expecting ID or OR_KW or DOLLAR_CURLY or '"', at (string):1:5 So it notices the first thing as an INT (I think, it might be a float, but I don’t think so) but the “.” seems to be interpreted as the attribute access operator. I didn’t find the rule for this - can someone point this out to me? Overall, I hope I didn’t make too much of a mess. I picked up a few little things along the way that I think warranted a quick correction (NixInt vs. regular int references and using a custom parser instead of stoi - or should that be stol?). If someone could help me figure out what I’m butchering in the Lexer (or elsewhere) … Cheers, Christian > On 04 Jan 2016, at 17:27, Eelco Dolstra <[email protected]> wrote: > > Hi, > > On 04/01/16 17:12, Rok Garbas wrote: > >> should we add this to nixpkgs/lib? it is usefull (using it right now) :) > > IMHO, it would be cleaner to add floats to the Nix language. Before somebody > decides to implement floating point arithmetic using a bunch of regexps ;-) > > -- > Eelco Dolstra | LogicBlox, Inc. | http://nixos.org/~eelco/ > _______________________________________________ > nix-dev mailing list > [email protected] > http://lists.science.uu.nl/mailman/listinfo/nix-dev -- Christian Theune · [email protected] · +49 345 219401 0 Flying Circus Internet Operations GmbH · http://flyingcircus.io Forsterstraße 29 · 06112 Halle (Saale) · Deutschland HR Stendal HRB 21169 · Geschäftsführer: Christian. Theune, Christian. Zagrodnick
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