Am 23.03.2012 um 10:30 schrieb Erik Christiansen: > On 23.03.12 08:53, Michael Haberler wrote: >> As for introspection on state at the gcode level, see >> http://www.linuxcnc.org/docs/devel/html/gcode/overview.html#_predefined_named_parameters_a_id_sec_predefined_named_parameters_a > > Many thanks for that link, Michael. And I thought that: > > http://www.linuxcnc.org/docview/html/gcode_overview.html#sub:Named-Parameters > > was the definitive reference on the subject. There are more hidden gems > in the LinuxCNC documentation warren than any single human knows about, > I suspect.
yes, here is this 'hidden manual';) - it describes the embedded Python environment in boring detail: http://www.linuxcnc.org/docs/devel/html/remap/structure.html I admit the canon and interpreter internals aspects are not as detailed as they could. Plowing the testcases and the source helps. The best references for the embedded Python exposure are: Interpreter internals: http://git.linuxcnc.org/gitweb?p=emc2.git;a=blob;f=src/emc/rs274ngc/interpmodule.cc;h=3cb2ed7ede7bce140ed284c426c3ca209cf236d9;hb=f1d4b33a6b3a6c10b8220d1e0533075b60fa0e79 Canon: http://git.linuxcnc.org/gitweb?p=emc2.git;a=blob;f=src/emc/rs274ngc/canonmodule.cc;h=edba3cb5147684feac0e89143fc3df465e1d247d;hb=f1d4b33a6b3a6c10b8220d1e0533075b60fa0e79 the experimental Task Python plugin: http://git.linuxcnc.org/gitweb?p=emc2.git;a=blob;f=src/emc/task/taskmodule.cc;h=d3ae25a16c892c346d48d4e703161d3ec868508b;hb=f1d4b33a6b3a6c10b8220d1e0533075b60fa0e79 >> See tests/remap/introspect/oword.py for state access. > > Seeing there, things like: > > self.params["a_new_local"] = 321.0 > > I'm tempted to guess (based on zero prior exposure to python), that > that's probably a hash.ยน This is standard Python dictionary syntax, see http://www.tutorialspoint.com/python/python_dictionary.htm > Having that available in bison would have made > the symbol table much easier to implement. ;-) it is, use std::map or std::unordered_map, see http://www.cplusplus.com/reference/stl/map/, http://en.cppreference.com/w/cpp/container/unordered_map The interpreter uses std::map for all globals and locals, and lots of other data. That is, in master - it got rid of all the home-grown symbol table routines when I merged the remapping changes last fall. > >> Exporting state from Python is left as an exercise for the reader;) > > Since the translator could be run as a filter or off-line, tests need to > be executed in gcode, so that they're real-time. I don't know of a > method to run in-line python in gcode, and have yet to see a need for > it, anyway. The predefined named parameters you've shared do it for me, > AFAICT. The manual shows how to do exactly this here: http://www.linuxcnc.org/docs/devel/html/remap/structure.html#remap:Python-O-word-procs You will find lots of examples for embedded Python usage in the canned demos under configs/sim/remap, and regression tests using these features, like under tests/remap and tests/interp. -m ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
