BrainfuckScript 🧠💻➡️🤯

Compile a C-like language directly into Brainfuck!

🌐 Try it online: https://bfscript.streamlit.app/

BrainfuckScript is a compiler written in Python that translates a more familiar, C-inspired syntax into notoriously minimalistic Brainfuck code. It aims to make developing complex Brainfuck programs feasible by providing higher-level abstractions like variables, loops, and conditional statements.

This project uses a 32-bit cell architecture for the target Brainfuck environment, allowing for larger numerical values compared to the traditional 8-bit model.

🤔 What is Brainfuck?

Before diving into BrainfuckScript, it helps to understand what it compiles to. Brainfuck is an esoteric programming language known for its extreme minimalism. It consists of only eight commands:

Command	Description
>	Increment the data pointer.
<	Decrement the data pointer.
+	Increment the byte at the pointer.
-	Decrement the byte at the pointer.
.	Output the byte at the pointer.
,	Input a byte to the pointer.
[	Jump forward if byte is zero.
]	Jump backward if byte is non-zero.

A simple "Hello World!" program in Brainfuck looks something like this:

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

As you can see, writing anything non-trivial directly in Brainfuck is a significant challenge. BrainfuckScript bridges this gap!

✨ Key Features

• C-like Syntax: Write code using familiar constructs like variables (size_t), if/else, while loops, and basic arithmetic.
• Brainfuck Compilation: Generates functional Brainfuck code as output.
• 32-Bit Cells: Targets a Brainfuck environment with 32-bit cells, enabling larger numbers.
• Python Implementation: Built with modern Python (>=3.13) and Poetry.
• Lark Parser: Uses the Lark library for robust parsing based on a defined grammar.
• Included Interpreter: Comes with a basic Brainfuck interpreter (also using 32-bit cells) to run the compiled code.

🚀 Getting Started

Prerequisites

• Python: Version 3.13 or higher.
• Poetry: A Python dependency management tool. (Installation Guide)

Installation

1. Clone the repository:

   git clone https://github.com/ImGajeed76/bfscript.git

2. Navigate to the project directory:

   cd bfscript

3. Install dependencies using Poetry:

   poetry install

🛠️ Usage

Web Version

You can also use BrainfuckScript directly in your browser at https://bfscript.streamlit.app/

Compiling BrainfuckScript (.bfs) to Brainfuck (.bf)

Use the compiler.py script to translate your BrainfuckScript code:

poetry run python compiler.py <input_file.bfs> <output_file.bf>

Example:

poetry run python compiler.py examples/pyramid.bfs pyramid.bf

This will read the code in examples/pyramid.bfs and write the compiled Brainfuck code to pyramid.bf.

Running Compiled Brainfuck Code (.bf)

Use the included interpreter.py to execute the generated Brainfuck code:

poetry run python interpreter.py <brainfuck_file.bf>

Example:

poetry run python interpreter.py pyramid.bf

This will run the Brainfuck code stored in pyramid.bf.

With Input:

If your Brainfuck code requires input, you can provide it like this:

poetry run python interpreter.py pyramid.bf "Some input"

Other Options:

poetry run python interpreter.py your_script.bf "Input" -m 60000 -b 8 -t 10.0

Option	Description
-m	Set the memory size (default: 30000 cells).
-b	Set the cell size in bits (default: 32).
-t	Set the timeout in seconds (default: 5.0).

📝 Syntax Example

BrainfuckScript uses a syntax reminiscent of C. Here's an example that prints a pyramid pattern:

// --- Pyramid Printer ---
// Prints a pyramid of '*' characters using nested loops.
// Avoids multiplication by incrementing the character count per row.

size_t height = 7; // Declare and initialize a variable

size_t current_row = 1;
size_t chars_for_this_row = 1;

// Loop for each row
while (current_row <= height) {

    // --- Print leading spaces ---
    size_t spaces_needed = height - current_row;
    size_t spaces_printed = 0;

    while (spaces_printed < spaces_needed) {
        output(' '); // Output a character literal
        spaces_printed = spaces_printed + 1;
    }

    // --- Print the characters ('*') ---
    size_t chars_printed = 0;
    while (chars_printed < chars_for_this_row) {
        output('*');
        chars_printed = chars_printed + 1;
    }

    // --- Print a newline character ---
    output('\n');

    // --- Prepare for the next row ---
    current_row = current_row + 1;
    // Add 2 characters for the next row (1 -> 3 -> 5 -> ...)
    chars_for_this_row = chars_for_this_row + 2;
}

// No explicit return needed for top-level code

🚧 Current Status & Limitations

This project is currently under development. The following features are not yet implemented:

• ❌ Variable Multiplication (*): Multiplication involving two variables is not supported. Constant folding works ( e.g., 5 * 2).
• ❌ Variable Division (/): Division involving two variables is not supported. Constant folding works (e.g., 10 / 2).
• ❌ Functions: Defining and calling custom functions (void myFunc() { ... }) is not yet implemented.
• ❌ Stacks: The stack data type and its associated operations (.push(), .pop(), .peek()) are not yet implemented.

These features are planned for future development!

🤝 Contributing

Contributions, issues, and feature requests are welcome! Feel free to check the issues page. Please open an issue first to discuss what you would like to change.

📜 License

This project is licensed under the GNU General Public License v3.0. See the LICENSE file for details.

---

Happy Brainfucking (the easier way)! 🎉