Spin1/Ruby polyglot

Wuerfel_21 · 2019-03-15 21:54

So for some reason I wondered: "Can you make a file that's both a Spin program and a Ruby program"
Then I passed out and an hour later I woke up with this in my editor (hey forum admins, why is there still no button for the code block?):

''# The amazing Ruby/Spin polyglot!
''; puts "Henlo World!"
''; text = %{
CON

_clkmode = xtal1 + pll16x
_xinfreq = 5_000_000

OBJ
pst : "parallax serial terminal"

PUB main
  pst.start(115_200)
  repeat
    pst.str(string("Henlo world!",13))

''}

'';p text

Wuerfel_21 · 2019-03-15 22:04

I also managed to find a way to include more than just oneliners of ruby:

''# The amazing Ruby/Spin polyglot!
''; puts "Henlo World!"
{{ } => 0
}
10.times { |x|
  p x
}
''; { 0 => {
}}
''; text = %{
CON

_clkmode = xtal1 + pll16x
_xinfreq = 5_000_000

OBJ
pst : "parallax serial terminal"

PUB main
  pst.start(115_200)
  repeat
    pst.str(string("Henlo world!",13))

''}

'';p text

rosco_pc · 2019-03-15 22:36

:cool:

AwesomeCronk · 2019-03-23 13:00

What is Ruby?

Publison · 2019-03-23 13:29

AwesomeCronk wrote: »

What is Ruby?

https://www.ruby-lang.org/en/

https://en.wikipedia.org/wiki/Ruby_(programming_language)

AwesomeCronk · 2019-03-24 19:48

So, @Wuerfel_21, how on earth did you do this? Are you compiling Ruby with Spin in the Propeller Tool???

Wuerfel_21 · 2019-03-24 20:33

nah, the trick is quite simple - abusing the syntax of both languages so that they read the other language code either as comments/strings or ineffective statements. It makes more sense when you actually paste it into an editor with syntax highlighting.
I don't think there is really anything useful one can do with this, but it's cool, still.

AwesomeCronk · 2019-03-24 21:39

So, it doesn’t compile?

Wuerfel_21 · 2019-03-24 22:47

It does, but it doesn't do anything cool. The cool part is that the same file compiles succesfully in Ruby and Spin and does the same thing (print out "Henlo World!").

Phil Pilgrim (PhiPi) · 2019-03-24 23:59

The trick is that the Spin code is a comment in Ruby, and the Ruby code is a comment in Spin.

-Phil

AwesomeCronk · 2019-03-25 01:58

🤯

Spin1/Ruby polyglot

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