bf.raku

Brainfuck interpretter made just for fun as an excersize for Raku. Don't ask "Why?", because "Why not?".

Print ! with new line:

$ ./bf.raku -e '+++++[>++++++<-]>+++.<----[>-----<+]>---.'
!

Calc 2 * 3:

$ ./bf.raku -l 5 -D -e '++[>+++<-]>'
  [0]   0 | 00 |   | { <00> 00 00 00 00 }
+ [0]   1 | 01 |   | { <01> 00 00 00 00 }
+ [0]   2 | 02 |   | { <02> 00 00 00 00 }
> [1]   0 | 00 |   | { 02 <00> 00 00 00 }
+ [1]   1 | 01 |   | { 02 <01> 00 00 00 }
+ [1]   2 | 02 |   | { 02 <02> 00 00 00 }
+ [1]   3 | 03 |   | { 02 <03> 00 00 00 }
< [0]   2 | 02 |   | { <02> 03 00 00 00 }
- [0]   1 | 01 |   | { <01> 03 00 00 00 }
> [1]   3 | 03 |   | { 01 <03> 00 00 00 }
+ [1]   4 | 04 |   | { 01 <04> 00 00 00 }
+ [1]   5 | 05 |   | { 01 <05> 00 00 00 }
+ [1]   6 | 06 |   | { 01 <06> 00 00 00 }
< [0]   1 | 01 |   | { <01> 06 00 00 00 }
- [0]   0 | 00 |   | { <00> 06 00 00 00 }
> [1]   6 | 06 |   | { 00 <06> 00 00 00 }

See source code for available options.

gen-bf-print.raku

Utility tool to generate a brainfuck code which will print the needed text.

$ echo 'Lol! What?' | ./gen-bf-print.raku 2> stderr.txt
++++++++[>+++++++++<-]>++++.
<+++++[>+++++++<-]>.
---.
<--------[>---------<+]>---.
-.
<+++++++[>+++++++<-]>++++++.
<++++[>++++<-]>+.
-------.
<++++[>++++<-]>+++.
<-------[>-------<+]>----.
<-------[>-------<+]>----.

$ cat stderr.txt
 76 => +76 = 8 * 9 + 4 | <++++++++[>+++++++++<-]>++++
111 => +35 = 5 * 7 + 0 | <+++++[>+++++++<-]>
108 => -3 = 1 * 3 + 0 | ---
 33 => -75 = 8 * 9 + 3 | <--------[>---------<+]>---
 32 => -1 = 1 * 1 + 0 | -
 87 => +55 = 7 * 7 + 6 | <+++++++[>+++++++<-]>++++++
104 => +17 = 4 * 4 + 1 | <++++[>++++<-]>+
 97 => -7 = 2 * 3 + 1 | -------
116 => +19 = 4 * 4 + 3 | <++++[>++++<-]>+++
 63 => -53 = 7 * 7 + 4 | <-------[>-------<+]>----
 10 => -53 = 7 * 7 + 4 | <-------[>-------<+]>----

And so:

$ echo 'Lol! What?' | ./gen-bf-print.raku 2> /dev/null | ./bf.raku
Lol! What?

There is no goal. Only the way!