esotope-bfc

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              by Kang Seonghoon <[email protected]>

This is the Esotope Brainfuck Compiler: the world's most optimizing Brainfuck- to-something compiler. Well, it is not a Something-to-Brainfuck compiler like Jeffry Johnston's BFBASIC, but it translates the Brainfuck code into efficient target language code (and possibly human-readable), so in this sense it is actually a decompiler rather than compiler.

There are many Brainfuck-to-C compilers (or Brainfuck-to-ELF compiler, and so on) available, but there are almost no compiler which can translate the following Brainfuck code:

>+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.>>>++++++++[
<++++>-]<.>>>++++++++++[<+++++++++>-]<---.<<<<.+++.------.--------.>>+.

...into something like the following code:

/* generated by esotope-bfc */
#include <stdio.h>
#include <stdint.h>
#define PUTS(s) fwrite(s, 1, sizeof(s)-1, stdout)
static uint8_t m[30000], *p = m;
int main(void) {
    PUTS("Hello World!");
    return 0;
}

Surprisingly I had seen no compiler reached this one! So I started to make my own compiler; Esotope Brainfuck Compiler is the result. (Actually, there are now one or two other compilers reached this state, but they are inspired by Esotope Brainfuck Compiler.)

                               ==========
                               HOW TO USE
                               ==========

Esotope Brainfuck Compiler requires Python 2.5 or later. Optionally you can use Psyco JIT compiler for better performance; Psyco is certainly required for very large Brainfuck code, including Jon Ripley's The Lost Kingdom.

Use "esotope-bfc" Python script to invoke Esotope Brainfuck Compiler. It can read the code from the given file, or standard input ("-"):

$ ./esotope-bfc -
+[]
^D
/* generated by esotope-bfc */
#include <stdio.h>
#include <stdint.h>
static uint8_t m[30000], *p = m;
int main(void) {
    while (1); /* infinite loop */
}


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                                LICENSE
                                =======

Esotope Brainfuck Compiler is written by Kang Seonghoon. It can be freely used and redistributable under the terms of MIT license.