Crate libbf

Brainfuck-like language library.

This library can define a variant of Brainfuck-like language parser and can run parsed program.

Examples

use libbf::{parser::Parser, runtime, token::simple::SimpleTokenSpec};
use std::io::{self, Read};

// Create parser with token specification.
let parser = Parser::new(
    SimpleTokenSpec {
        // You can specify tokens with `ToString` (`char`, `&str`, `String`, etc.)
        ptr_inc: '>',              // char
        ptr_dec: "<",              // &str
        data_inc: "+".to_string(), // String
        data_dec: '-',
        output: '.',
        input: ',',
        loop_head: '[',
        loop_tail: ']',
    }
    .to_tokenizer(),
);

let source = "++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.";
let program = parser.parse_str(source).expect("Failed to parse");
let mut output = Vec::new();
let result = runtime::run(&program, io::stdin(), &mut output);

assert!(result.is_ok());
assert_eq!(output, b"Hello World!\n");

Modules

• error
  This module contains error definitions.
• parser
  This module provides a parser for the program.
• predefined
  Predefined Brainfuck-like implementations.
• prelude
  use libbf::prelude::* is easy way to use this library;
• program
  Parsed program of Brainfuck-like language and related definitions.
• runtime
  Program runtime.
• token
  Token related definitions.