Hi all, I am trying to make a very simple list oriented language (well more like preprocessor ala m4), I think there is a very "natural" solution (something that basically writes itself) to what I am looking for, but I was wondering if I could get some help fleshing out the idea. Basically, I would just want to define list assignment, functions and function application over lists that is very \n delimiter oriented, with the default interpolation behaviour to take cross-products. This would be pseudo example, the idea being that the syntax would be very lightweight over a normal text file... 
As->{
1
2
3
4
5
}

Bs->{
6
7
8
9
}


AsBs

>>16
  27
  38
  49
  5


x-> is some number

6x

>>6 is some number

6{1,2,3,4}

>>61
  62
  63
  64


level1a->{
A
AA
}

level1b->{
B
BB
}


level2->{
 level1a level1a
 level1a level1b
}

level2

>>A A
  A AA
  AA A
  AA AA
  A  B
  A  BB
  AA B
  AA BB

[download]
I am not sure exactly how well I've thought this out, but it gives you an idea...it's basically just subsitition with and emphasis on cross products that is sacrifices some flexibility for simplicity by imposing things like new line delimiters. I am just a little flustered in terms of where to start doing this "the right way". Am I supposed to do this in recdescent? Is there a way to extend/modify perl's syntax so I can get things like regex's in my function definitions? Is there an obvious way to do this without perl?

In reply to A simple list oriented language in Perl by gmol

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