Re: [racket-users] More DrRacket binding arrow woes

Here is a snippet of code in the language: #lang network-flow ;; sample graph problem: maximize from a to d node a -- 10 --> b node a -- 20 --> c node b -- 30 --> d node c -- 30 --> d Here is a link to the language http://www.ccs.neu.edu/home/matthias/4620-s18/network-syn-lang.rkt

Re: [racket-users] More DrRacket binding arrow woes

Thank you for your advice! If your code is online and you don't mind, could you point me to the project or any other tutorial so that I can see the sample code? Right now I have https://docs.racket-lang.org/guide/hash-reader.html but the grammar is rather simple. It would be nice if there is a

Re: [racket-users] More DrRacket binding arrow woes

Instead of parsing the raw strings, you might consider the following alternative: — use read tables to nail down identifier syntax and literal constant syntax — define all keywords and operators and whatever as plain syntax ids that raise a syntax error — all remaining things are your

Re: [racket-users] More DrRacket binding arrow woes

It works now! I think I simply need a `strip-context` and avoid `datum->syntax`. Thank you very much for your help! On Wednesday, February 14, 2018 at 5:15:06 AM UTC-5, Alexis King wrote: > > It is worth pointing out that Check Syntax does not see the result of > your reader, it sees the

Re: [racket-users] More DrRacket binding arrow woes

There are bugs in DrRacket's handling of the automatic-zo compilation mechanism that I know about and have been trying to find time to fix. With the current buggy state, you should always be able to get to a non-buggy use if you do a "raco make x.rkt" in the shell (I think). Or, if you disable

Re: [racket-users] More DrRacket binding arrow woes

> So, the bindings are fine, and the syntax-original? property is fine. Is the > source location good, including the `syntax-source` field? > > I had a similar issue once, and it turned out that it was because the > `syntax-source` part of the source location was wrong. I had been using >

Re: [racket-users] More DrRacket binding arrow woes

It's not great, but one of the things I do to try to diagnose issues like this is to put printfs into the check syntax implementation itself. They will show up in the stdout put of DrRacket (so start it from a Terminal window on the mac, say). To test Alex's hypothesis, I suggest putting one that

Re: [racket-users] More DrRacket binding arrow woes

> On May 7, 2016, at 5:18 AM, Alexis King wrote: > However, I am not seeing any of the Check Syntax binding arrows at all. > Neither the arrows from imports nor arrows between definitions show up. > Inspecting the syntax objects at read-time and after expansion in the >

[racket-users] More DrRacket binding arrow woes

This is not the first time I have asked about the binding arrows on this mailing list, but I seem to have run into a new problem that has me completely stumped. I have written a #lang that uses an entirely custom implementation of read-syntax (it does not wrap Racket’s read-syntax in any way), and