I have been working for sometime on a subset of RS274ngc parser. I have a program on my Mac which reads a dxf file and converts it to RS274ngc and allows you to invoke some wizards along with it. The purpose of my parser is to re-read the RS274ngc files I create an allow them to be edited and see the output on the screen in terms of generated 3d paths.
Long intro but the reason for this post is to say that writing a parser that will make sense of the current state of RS274ngc code that is acceptable to linuxcnc, is non-trivial. Even the subset that I am trying to handle is not so easy. A EBNF parser should reject code (or at least flag it as error) that is not legal for linuxcnc. As long as we allow people to define gcodes and or mcodes on the fly, it is much more difficult. I am one of those people who doesn't like code written without any whitespace but I have no problem with the current linuxcnc parser/interpreter. My goal was/is to be able to generate code that I like, formatted like I want, and that is still acceptable to linuxcnc. I see no benefit to an EBNF parser that is so loose that it will pass anything that sort of resembles gcode without flagging invalid code. Alan --- Alan Condit 1085 Tierra Ct. Woodburn, OR 97071 Email -- acon...@ipns.com Home-Office (503) 982-0906 ------------------------------------------------------------------------------ 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
