Re: [Emc-users] gcmc - G-Code Meta Compiler

[Bertho S. <be...@va...>]

On 10/30/2013 02:53 PM, andy pugh wrote:
> Getting a bit off topic here

Well, if I cannot defend the choices made in the creation of gcmc, then
they may not be valid choices and should be thought about.


> , but the RS274NGC version of G-code doesn't use line-numbers at all.
> While/Wend If/Endif are matched by numerical tags, so canbe moved
> about (but can't be repeated unless you change their identifier
> tags)
> http://www.linuxcnc.org/docs/html/gcode/o-code.html

What is more readable?

o100 sub
(notice that the if-endif block uses a different number)
  o110 if [#2 GT 5]
    (some code here)
  o110 endif
  (some more code here)
o100 endsub

... or ...

function blabla(arg1, arg2)
{
	if(arg2 > 5) {
		/* Some code here */
	}
}


> I have a feeling that a few years ago someone wrote a system to
> allow use of something Python-like to create G-code, but I can't find
> it.

I vaguely remember seeing some python style attempt, but I have one
*very* large objection to python: it is context-sensitive.

IMO, it is brain-dead to use indenting for scoping purposes where
context-free grammars have proven to be so useful over the years. But
that is my opinion.

-- 
Greetings Bertho

(disclaimers are disclaimed)