Callisto: Reverse polish notation programming language inspired by YSL-C3, Forth

https://github.com/callisto-lang/compiler

by thunderbong • 2 years ago

52 8 2 years ago

github.com

kelsey98765431• 2 years ago

Quick somebody add it to esolang before it escapes into the wild

kjs32• 2 years ago

You mean like all of the other Forths that have escaped and taken over the world?

pjmlp2• 2 years ago

At least one did,

https://en.wikipedia.org/wiki/HP_48_series

Current generation still making engineering students happy, https://www.amazon.com/HP-G8X92AA-Prime-Graphing-Calculator/....

loa_in_• 2 years ago

Fibonacci example:

  include "cores/select.cal"
  include "std/io.cal"
  
  func fib begin
 let cell n
 -> n

 if n 1 <= then
  n return
 else
  n 1 - fib
  n 2 - fib
  + return
 end
  end
  
  9 fib printdec new_line

The vocabulary is visibly more verbose than Forth which is good IMO.

It also has a subset called CallistoScript made for scripting languages like Lua, and it's still sort of low level

I wish Garry's Mod WireMod CPU's ran on something like this rather than Lua, for the sake of health of my wrists if not much else. For those who don't know, Garry's Mod is a sandbox game and WireMod is an addon from Steam workshop that allows one to put microcontrollers in one's physical contraptions. The physics engine in that sandbox leaves a lot to be desired though, with all the phasing through geometry.

mesyeti• 2 years ago

CallistoScript compiles to lua so you can use it for garry's mod, but I'm not sure how well it would work

nvy• 2 years ago

RPN is cool, glad to see stuff like this still being written.

Back in undergrad we used to program our HP calculators in RPL, Reverse Polish Lisp, which I found very hard to grok at the time but a few of us managed to cobble together a set of utilities to render the final exam of third year electromechanics pretty trivial.

Good times.

pjmlp2• 2 years ago

Nice to see a D based project in the news.

Cool project as well.

Callisto: Reverse polish notation programming language inspired by YSL-C3, Forth

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