Another interesting related trawling find, with a some ideas for syntax evolution:
A G code precompiler which parses a language based on C control structures, and generates rs274ngc gcode for LinuxCNC (including O-word constructs etc). It's by a fellow named Lawrence Yu, and its based on PLY/(Python lex yacc), and includes some basic yacc grammar for a G-code block syntax an interesting concept I hadnt thought of: he uses whitespace and whitespace/newline combination as language tokens returned by the scanner it makes a lot of sense to do that for rs274ngc and is a way to deal with Ken's 'drop whitespace squashing' idea in a backwards-compatible/selectable way and within a single parser its very well hidden from google: http://tsemsb.blogspot.com/search/label/GCODE http://tsemsb.blogspot.com/2010/04/cgcc-gcode-with-c-constructs.html The code isnt online in a readable fashion - one need to download and unpack the zip archive: http://sites.google.com/site/cgcccompiler/CGCC_v101.zip -m ps: unfortunately, a quick check of performance of pycparsers with a PLY based scanner/parser suggests it needs serious tuning, at least a faster scanner - a dozen or so example program needs near 0.5 sec of CPU time Am 23.01.2012 um 03:16 schrieb Scott Hasse: > I understand where you are coming from. Word order is not important as >> ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
