Brainf*ck JVM Compiler

A compiler that compiles Brainf*ck input to Java bytecode that can be executed on a JVM, using the JEP457 Class-File API.

The compiler is simple and does no optimizations. For an optimizing compiler see here.

Building

You'll need JDK 22. The easiest way to install this, on Linux, is with SDK man:

sdk install java 22-open

You can then compile the Main class with --release 22 and --enable-preview flags:

$ javac --release 22 --enable-preview src/BfCompiler.java -d build

Compile a Brainf*ck program by passing the input file path and the output jar path to the compiler.

You can execute the compiled class, or simply run BfCompiler.java directly from source with the --source 22 parameter:

$ java --enable-preview --source 22 src/BfCompiler.java examples/hellojvm.bf build/out.jar

The compiled jar can then be executed:

$ java -jar build/out.jar