---
name: "Acme::Brainfuck"
section: "3pm"
platform: "linux"
package: "libacme-brainfck-perl"
version: "1.1.1-2.1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Acme::Brainfuck"
---

# Acme::Brainfuck(3pm)

Embed Brainfuck in your perl code

## NAME

Acme::Brainfuck - Embed Brainfuck in your perl code

## SYNOPSIS

```
 #!/usr/bin/env perl
 use Acme::Brainfuck;
 print 'Hello world!', chr ++++++++++. ;
```

## DESCRIPTION

Brainfuck is about the tiniest Turing-complete programming language you can get.  A language is Turing-complete if it can model the operations of a Turing machine--an abstract model of a computer defined by the British mathematician Alan Turing in 1936.  A Turing machine consists only of an endless sequence of memory cells and a pointer to one particular memory cell.  Yet it is theoretically capable of performing any computation. With this module, you can embed Brainfuck instructions delimited by whitespace into your perl code.  It will be translated into Perl as parsed.   Brainfuck has just just 8 instructions (well more in this implementation, see "Extensions to ANSI Brainfuck" below.) which are as follows

### Instructions

- \+ Increment

  Increase the value of the current memory cell by one.

- \- Decrement

  Decrease the value of the current memory cell by one.

- \> Forward

  Move the pointer to the next memory cell.

- \< Back

  Move the pointer to the previous memory cell.

- , Input

  Read a byte from Standard Input and store it in the current memory cell.

- . Output

  Write the value of the current memory cell to standard output.

- \[ Loop

  If the value of the current memory cell is 0, continue to the cell after the next '\]'.

- \] Next

  Go back to the last previous '\['.

### Extensions to ANSI Brainfuck

This implementation has extra instructions available.  In order to avoid such terrible bloat, they are only available if you use the *verbose* pragma like  so:

use Acme::Brainfuck qw/verbose/;

The extra instructions are:

- \~ Reset

  Resets the pointer to the first memory cell and clear all memory cells.

- \# Peek

  Prints the values of the memory pointer and the current memory cell to  STDERR.  See also "Debugging" below.

### Debugging

By using the *debug* pragma like this:

use Acme::Brainfuck qw/debug/;

you can dump out the generated perl code.  (Caution: it is not pretty.) The key to understanding it is that the memory pointer is represented by  *$p*, and the memory array by *@m*  Therefore the  value of the current  memory cell is *$m\[$p\]*.

## RETURN VALUE

Each sequence of Brainfuck instructions becomes a Perl block and returns the  value of the current memory cell.

## EXAMPLES

### JABH

```
 #!/usr/bin/env perl
 use Acme::Brainfuck;
 print "Just another ";
 ++++++[>++++++++++++++++<-]>
 ++.--
 >+++[<++++++>-]<.>[-]+++[<------>-]<
 +.-
 +++++++++.---------
 ++++++++++++++.--------------
 ++++++.------
 >+++[<+++++++>-]<.>[-]+++[<------->-]<
 +++.---
 +++++++++++.-----------
 print " hacker.\n";
```

### Countdown

```
 #!/usr/bin/env perl
 use strict;
 use Acme::Brainfuck qw/verbose/;
 print "Countdown commencing...\n";
 ++++++++++[>+>+<<-]
 >>+++++++++++++++++++++++++++++++++++++++++++++++<<
 ++++++++++[>>.-<.<-]
 print "We have liftoff!\n";
```

### Reverse

```
 #!/usr/bin/env perl
 use Acme::Brainfuck qw/verbose/;

 while(1)
 {
   print "Say something to Backwards Man and then press enter: ";
   +[->,----------]<
   print 'Backwards Man says, "';
   [+++++++++++.<]<
   print "\" to you too.\n";
   ~
 }
```

### Math

```
 #!/usr/bin/env perl
 use Acme::Brainfuck;
 use strict;
 use warnings;
 my $answer = +++[>++++++<-]> ;
 print "3 * 6 = $answer \n";
```

## VERSION

```
 1.1.1 Apr 06, 2004
```

## AUTHOR

```
 Jaldhar H. Vyas E<lt>jaldhar@braincells.comE<gt>
```

## THANKS

Urban Mueller - The inventor of Brainfuck.

Damian Conway - For twisting perl to hitherto unimaginable heights of  weirdness.

Marco Nippula \<http://www.hut.fi/~mnippula/\> - Some code in this module comes from his *brainfuck.pl*

Mr. Rock - Who has a nice Brainfuck tutorial at  \<http://www.cydathria.com/bf/\>.  Some of the example code comes from there.

## COPYRIGHT AND LICENSE

```
 Copyright (c) 2004, Consolidated Braincells Inc.
 Licensed with no warranties under the Crowley Public License:

 "Do what thou wilt shall be the whole of the license."
```