bfwasm
A non-optimizing Brainf_ck to WebAssembly compiler. Yes, compiler. Not interpreter.
Installation
npm install -g @surma/bfwasm
Usage (CLI)
Usage: bfwasm [options]
Options:
-o, --output <file> File to write compiled Wasm to
-r, --run Run compiled Wasm (implies --asyncify)
--mem-dump <N> Dump the first N cells of memory after run
--hex-output Turn std out into hexadecimap
--asyncify Run Binaryen Asyncify pass
--wasi Use WASI for I/O
-h, --help output usage information
Usage (API)
import { compile } from "@surma/bfwasm";
const wasmBuffer = compile(`
++++++++++[>++++++++++++++++++++++
>+++++++++++++++>++++++++++++++++>+
<<<<-]>++++++.>+++++++.>++++.
`);
const decoder = new TextDecoder();
const importsObj = {
env: {
in() {
/* Called when bf programm needs input */
return 0;
},
out(v) {
/* Called when bf programm has output */
console.log(
decoder.decode(new Uint8Array([v]), {stream: true})
);
}
}
};
const {instance} = await WebAssembly.instantiate(wasmBuffer, importsObj);
instance.exports._start();compile(program, options) compiles program to a WebAssembly module exporting a "_start" function.
Options:
-
exportMemory(default:true) will export the memory as"memory". -
autoRun(default:false) will declare"_start"as the module’s start function. -
useWasi(default:false) use WASI core for I/O.
License Apache-2.0