Snack

The language that eats the stack. Heavily inspired by porth which is inspired off of forth

Install

To use Snack you will need Rust and fasm After installing Rust just run

git clone https://github.com/cowboy8625/snack
cd snack/snackc
cargo run --release -- run 
   

   

or to install

cargo install --git https://github.com/cowboy8625/snack

Snackc Args

Args can be stacked.

run           Compiles and runs file.
--debug       Gives debug output to assembly file.

and you all set.

Snackc Commands

Build snackc

Build & Run snackc run

Syntax

Hello World

"Hello World!\n" 1 1 syscall3

Looping and Conditions

0 while copy 10 <= do
copy 0 == if
100 .
copy 1 == elif
200 .
copy 2 == elif
300 .
copy 3 == elif
400 .
else
copy .
end
1 +
end

Stack Commands

Operators

Memory

Syscall's

How it works (Or Will)

Linking

Take some of the naming with a grain of salt.

Linking happens after the file is turned into tokens well all but the while loops do get linked to there end block in the lexing process.

A link is just the tokens idx number so a jump in a condisional statement would be like this.

1 0 if
100 .
else
200 .
end

in the assembly we put a place to jump into the else block.

; check if we run if statement else we jump to the else block
filename5:   ;←  this is the else starting point
push  200
pop   rdi
call  print
filename8:   ;←  this is the end starting point

Blocks are labeled with the filename stripped of any -, /, \\ followed by the block index number.