2 releases

0.1.1	Dec 27, 2021
0.1.0	Dec 26, 2021

#9 in #transpile

MIT license

27KB
719 lines

bfcc

A Brainfuck interpreter, transpiler and inspector written in Rust

Usage

Installation

You can install the newest published version of the binary by running:

cargo install bfcc

Commands

bfcc transpile - a Brainfuck to C optimizing transpiler
bfcc run - a Brainfuck interpreter
bfcc spy - a runtime inspector and soon to be debugger

Optimization

During transpilation the AST gets converted into an intermediary representation that gets optimized in multiple passes.

Although I haven't tested these optimizations enough to provide any sort of guarantee, these optimizations all seem to generate functionally equivalent programs.

Implementation status

	Strategy	File
✅	Fusing increment/decrement commands	`fuse_add.rs`
✅	Fusing movements	`fuse_movements.rs`
✅	Deferring movements	`defer_movements.rs`
✅	Unrolling zero/clear loops	`unroll_zero_loops.rs`
	Unrolling copy loops
	Unrolling multiplication loops

^{All transforms can be found under src/transpiler/transforms}

References

These websites have served as great references during development:

Todo

Start implementing optimizations
Implement breakpoints, single stepping and register peeking in debugger
Add a command that generates LLVM IR, and compiles to a binary

🧠 🦀

Dependencies

~3.5–5.5MB
~101K SLoC