NAME
Language::Befunge - a Befunge-98 interpreter.
SYNOPSIS
use Language::Befunge;
read_file( "program.bf" );
run_code;
Or, one can write directly:
store_code( <<'END_OF_CODE' );
v @,,,,"foo"a <
> ^
END_OF_CODE
run_code;DESCRIPTION
Enter the realm of topological languages!
This module implements the Funge-98 specifications on a 2D field (also called Befunge). In particular, be aware that this is not a Trefunge implementation (3D).
This Befunge-98 interpreters assumes the stack and Funge-Space cells of this implementation are 32 bits signed integers (I hope your os understand those integers). This means that the torus (or Cartesian Lahey-Space topology to be more precise) looks like the following:
32-bit Befunge-98
=================
^
|-2,147,483,648
|
| x
<-----------+----------->
-2,147,483,648 | 2,147,483,647
|
y|2,147,483,647
vThis implementation is meant to work on unix-like systems, because this interpreters only handle the character which ordinal value is 10 (also known as \n) as an End-Of-Line chars. In particular, no warranty is made neither for Microsoft systems (\r\n) nor for Macs (\r).
PRIVATE FUNCTIONS
debug( )
Output debug messages.
EXPORTED FUNCTIONS
read_file( filename )
Read a file (given as argument) and store its code.
Side effect: clear the previous code.
store_code( code )
Store the given code in the Lahey space.
Side effect: clear the previous code.
run_code( )
Run the current code. That is, create a new Instruction Pointer and move it around the code.
Return the exit code of the program.
AUTHOR
Jerome Quelin, <jquelin@cpan.org>
COPYRIGHT
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.