VBF
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VBF is a brainfuck derivative by VilgotanL with some extra instructions for control-flow.
Instructions
New instructions compared to brainfuck:
( |
Begin if zero |
!( |
Begin if not zero |
) |
End if |
{ |
While zero |
} |
End while zero |
Single-line comments are also supported, with #.
Examples
Cat program
Same as in brainfuck.
,[.,]
Infinite counter
Counts to infinity in base 10 starting with 1.
->>--<<[>---------(----------)++++++++++{>++(++>--
<)-----------(----------)++++++++++}++[-->++]--<+[
+++++++++++++++++++++++++++++++++++++++++++++++.--
----------------------------------------------<+]+
+++++++++.-----------]
The above program transpiled to brainfuck and minified:
->>>>--<<<<[>>---------[->+>>+<<<]>>>[-<<<+>>>]+<<[[-]>>-<<]>>[-<<<---------->>> ]<<<++++++++++[->+>>+<<<]>>>[-<<<+>>>]+<<[[-]>>-<<]>>[-<++[->+>>+<<<]>>>[-<<<+>> >]+<<[[-]>>-<<]>>[-<<<++>>-->]<<<-----------[->+>>+<<<]>>>[-<<<+>>>]+<<[[-]>>-<< ]>>[-<<<---------->>>]<<<++++++++++[->+>>+<<<]>>>[-<<<+>>>]+<<[[-]>>-<<]>>]<<<++ [-->>++]--<<+[+++++++++++++++++++++++++++++++++++++++++++++++.------------------ ------------------------------<<+]++++++++++.-----------]
Transpilation table
Here is a table for transpiling VBF to brainfuck:
| VBF | brainfuck |
|---|---|
> |
>>
|
< |
<<
|
( |
[->+>>+<<<]>>>[-<<<+>>>]+<<[[-]>>-<<]>>[-<<<
|
!( |
[->+>>+<<<]>[-<+>]>>[[-]<<<
|
) |
>>>]<<<
|
{ |
[->+>>+<<<]>>>[-<<<+>>>]+<<[[-]>>-<<]>>[-<<<
|
} |
[->+>>+<<<]>>>[-<<<+>>>]+<<[[-]>>-<<]>>]<<<
|
All other instructions are the same.
Computational Class
VBF is obviously Turing-complete since it is basically backwards-compatible with brainfuck.