In my experience, instaparse + defun is a good choice. https://github.com/Engelberg/instaparse https://github.com/killme2008/defun/
2017-08-15 22:02 GMT+08:00 Gary Trakhman <gary.trakh...@gmail.com>: > I enjoyed working with clj-antlr recently, it's a wrapper over a java > library, but gives you a fast feedback loop with an interpreter instead of > generated java code. The 'clojurey' part is that the output is a nested > sequence, from there it's really effective to use tree zippers and > core.match to transform the parse-tree into the data structure you need. > > Take a look at: > https://github.com/clojure/core.match > https://github.com/aphyr/clj-antlr > https://www.ibm.com/developerworks/library/j-treevisit/ > https://github.com/akhudek/zip-visit > > On Tue, Aug 15, 2017 at 9:56 AM Laurens Van Houtven <_...@lvh.cc> wrote: > >> Hi, >> >> >> Instaparse is a great parser generator, especially if you already have a >> BNF. >> >> Sent from my iPhone >> >> On Aug 15, 2017, at 08:44, sventrax...@gmail.com wrote: >> >> Thanks for your input. LFE is quite an unexpected "thing". >> >> What I'm trying to do, is just a "lunch time project"; something that I >> can target without corporate constrains just as a learning exercise. >> Furthermore I can test the Clojure version against my old working Java >> version. >> >> As I was saying, while experimenting with Instaparse, I'm having the >> feeling it is not the correct Clojure tool for this type of development >> >> >> >> On Tuesday, August 15, 2017 at 2:17:50 PM UTC+1, adrians wrote: >>> >>> If you need the features of Erlang but would like that in a Lisp (not >>> Common Lisp, though) environment, have you taken a look at LFE (Lisp >>> Flavored Erlang)? I'm not trying to discourage you from looking at Clojure, >>> but if you need/depend on some of the features of Erlang, LFE might be a >>> closer fit. >>> >>> http://lfe.io >>> >>> On Tuesday, August 15, 2017 at 8:11:53 AM UTC-4, svent...@gmail.com >>> wrote: >>>> >>>> >>>> Hi >>>> >>>> Months ago I read a review that praised Clojure's clean approach and >>>> use of JVM that is almost always available in my deployments. >>>> >>>> My background: started with 370 assembly ( so I'm not young!!!) and >>>> during the last four years I've been using Erlang for network applications. >>>> For my type of work the functional approach, concurrency and bit handling >>>> of Erlang are life savings. Nonetheless I feel "the call" of Clojure. As an >>>> exercise I would like to re implement something I did years ago in Java, >>>> i.e. a sort of parser. What I have on my hands is a DSL like this >>>> >>>> HeaderRule=hr-ftp >>>> Term=100 >>>> name="ftp" >>>> From=1 >>>> networkPort="21" >>>> Protocol=1 >>>> Tcp=1 >>>> up >>>> up >>>> up >>>> Then=1 >>>> ProtocolInspection=1 >>>> ftpRuleSet="frs-ftp" >>>> up >>>> ServiceDataFlowId=1 >>>> payload=99 >>>> up >>>> up >>>> up >>>> up >>>> HeaderRule=hr-http >>>> ...... >>>> >>>> For my old Java implementation I used state machines to build an >>>> internal representation, sort of an AST, that would be used to analyze pcap >>>> files. In my Clojure challenge, I would like to have a different approach. >>>> Googling around I've found many options: Parsley, Instaparse, cljcc and >>>> more. Some mentioned on www.clojure-toolbox.com seem to be more >>>> abandonware. >>>> At the moment I'm focusing on Instaparse. However, maybe due to the >>>> previous implementation, I feel that this is not the best approach with >>>> Clojure. Certainly my rookie state is leading me the wrong way. >>>> >>>> Comments and feedback will be greatly appreciated >>>> >>>> Fred >>>> >>>> >>>> >>>> >>>> >>>> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- 庄晓丹 Email: killme2...@gmail.com Site: http://fnil.net 不学习，毋宁死 -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
