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Python Brainf*ck Compiler (Alpha)

5elenay
I'm 15 years old programmer from Turkey. I always wanted to learn new technologies!
・3 min read

I was bored so i made a python compiler for brainf*ck programming language.

Links

Source Code (Github)
What is Brainf*ck?

Example Brainf*ck Program

[ This program prints "Hello World!" and a newline to the screen, its
  length is 106 active command characters. [It is not the shortest.]

  This loop is an "initial comment loop", a simple way of adding a comment
  to a BF program such that you don't have to worry about any command
  characters. Any ".", ",", "+", "-", "<" and ">" characters are simply
  ignored, the "[" and "]" characters just have to be balanced. This
  loop and the commands it contains are ignored because the current cell
  defaults to a value of 0; the 0 value causes this loop to be skipped.
]
++++++++               Set Cell #0 to 8
[
    >++++               Add 4 to Cell #1; this will always set Cell #1 to 4
    [                   as the cell will be cleared by the loop
        >++             Add 2 to Cell #2
        >+++            Add 3 to Cell #3
        >+++            Add 3 to Cell #4
        >+              Add 1 to Cell #5
        <<<<-           Decrement the loop counter in Cell #1
    ]                   Loop till Cell #1 is zero; number of iterations is 4
    >+                  Add 1 to Cell #2
    >+                  Add 1 to Cell #3
    >-                  Subtract 1 from Cell #4
    >>+                 Add 1 to Cell #6
    [<]                 Move back to the first zero cell you find; this will
                        be Cell #1 which was cleared by the previous loop
    <-                  Decrement the loop Counter in Cell #0
]                       Loop till Cell #0 is zero; number of iterations is 8

The result of this is:
Cell No :   0   1   2   3   4   5   6
Contents:   0   0  72 104  88  32   8
Pointer :   ^

>>.                     Cell #2 has value 72 which is 'H'
>---.                   Subtract 3 from Cell #3 to get 101 which is 'e'
+++++++..+++.           Likewise for 'llo' from Cell #3
>>.                     Cell #5 is 32 for the space
<-.                     Subtract 1 from Cell #4 for 87 to give a 'W'
<.                      Cell #3 was set to 'o' from the end of 'Hello'
+++.------.--------.    Cell #3 for 'rl' and 'd'
>>+.                    Add 1 to Cell #5 gives us an exclamation point
>++.                    And finally a newline from Cell #6
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Config

Check config.json first, quick information about config.json;

{
    "MEM": 20, // MEM is the total cells for our brainfuck program.
    "DUMP_FILE": "./result/dump.py", // The dump file that will write when program finished and got some informations about the code. 
    "COMPILE_FILE": "./result/compiled.py", // The file that will write when brainfuck code turned into python code.
    "LOG_FILE": "./result/logs.txt", // Log file for our program actions.
    "DEBUG": true // Allow debug mode for compiler, will log everything to console.
}
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Usage

Simple Usage;
python compiler.py ./example/fibonacci.bf

Output: ... 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89 ...

And also you can check ./result/dump.py for some informations about program;

# DUMP RESULT | 13/05/2021 16:59:13
# =======================================================
# TOTAL CELL GIVEN: 20
# TOTAL CELL USED: 4
# TOTAL BYTE USED: 309
# MEMORY DUMP: [
    # CELL_0 -> 0 BYTE
    # CELL_1 -> 144 BYTE
    # CELL_2 -> 89 BYTE
    # CELL_3 -> 0 BYTE
    # CELL_4 -> 0 BYTE
    # CELL_5 -> 44 BYTE
    # CELL_6 -> 32 BYTE
    # CELL_7 -> 0 BYTE
    # CELL_8 -> 0 BYTE
    # CELL_9 -> 0 BYTE
    # CELL_10 -> 0 BYTE
    # CELL_11 -> 0 BYTE
    # CELL_12 -> 0 BYTE
    # CELL_13 -> 0 BYTE
    # CELL_14 -> 0 BYTE
    # CELL_15 -> 0 BYTE
    # CELL_16 -> 0 BYTE
    # CELL_17 -> 0 BYTE
    # CELL_18 -> 0 BYTE
    # CELL_19 -> 0 BYTE
# ]

# MINIFIED VERSION: [
    # LINE_1 -> +++++++++++>+>>>>++++++++++++++++++++++++++++++++++++++++++++>++++++++++++++++++
    # LINE_2 -> ++++++++++++++<<<<<<[>[>>>>>>+>+<<<<<<<-]>>>>>>>[<<<<<<<+>>>>>>>-]<[>++++++++++[
    # LINE_3 -> -<-[>>+>+<<<-]>>>[<<<+>>>-]+<[>[-]<[-]]>[<<[>>>+<<<-]>>[-]]<<]>>>[>>+>+<<<-]>>>[
    # LINE_4 -> <<<+>>>-]+<[>[-]<[-]]>[<<+>>[-]]<<<<<<<]>>>>>[++++++++++++++++++++++++++++++++++
    # LINE_5 -> ++++++++++++++.[-]]++++++++++<[->-<]>+++++++++++++++++++++++++++++++++++++++++++
    # LINE_6 -> +++++.[-]<<<<<<<<<<<<[>>>+>+<<<<-]>>>>[<<<<+>>>>-]<-[>>.>.<<<[-]]<<[>>+>+<<<-]>>
    # LINE_7 -> >[<<<+>>>-]<<[<+>-]>[<+>-]<<<-]
# ]
# =======================================================

# Code Starts Here ...
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Notes

This program may have some bugs. If you found a bug, please contribute!

Discussion (4)

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olus2000 profile image
Alex Esoposting

Wait, so you compile brainfuck into valid python code? That's so beautifully useless, a gorgeous overkill. I love it!

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5elenay profile image
5elenay Author

Yeah it compile brainf*ck code to python code, thanks!

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raksix profile image
Raksix

nice

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5elenay profile image
5elenay Author

thanks!