🧠 bft

A multi-target brainf*ck transpiler

bft is an optimizing modular brainf*ck transpiler which currently has backends for:

• C (--target=c)
• JavaScript for the NodeJS runtime (--target=js)
• Rust (--target=rust)
• Ada (--target=ada)
• Fortran 90 (--target=fortran)

Command line options

bft accepts the following command-line arguments:

• --target={target lang}, -t {target lang} → the transpilation target langauge
• positional, --source={source file}, -s {source file} → the source brainf*ck file
• --verbose, -v → increases the logging verbosity
• --output={output file}, -o {output file} → the transpiled output file
• --help, -h → displays the options guide
• --optimize={0 - 3}, -O {0 - 3} → how aggressively the transpiler should optimize the brainf*ck. If not specified, defaults to 3

Building

Dependencies:

• CMake
• Make
• Boost program options

To build bft, run ./build.sh {{Debug or Release}}

Running

To transpile a brainf*ck program, simply run bft {{input file}} -o {{output file}} --target={{target language}} Examples:

bft input.bf -o output.js --target=js
bft input.bf -o output.c --target=c
bft input.bf -o output.rs --target=rust
bft input.bf -o output.adb --target=ada
bft input.bf -o output.f90 --target=fortran

Testing

Run the test.sh script to run the C, JavaScript, Rust, Ada, and Fortran tests. DISCLAIMER: You will need to modify the libc crate path in the test/rust/test.sh script for rustc to correctly include it, see the Rust notes section below

Rust notes

The rust target references the libc crate, so to compile either create a Cargo project and add libc to the dependencies, or compile with rustc with --extern libc={path to libc rlib}