1 stable release
1.0.0 | May 14, 2022 |
---|
#1165 in Programming languages
26KB
416 lines
blazefuck
A blazingly-fast (interactive) Brainfuck interpreter, written in Rust.
Description
A tiny, efficient Brainfuck interpreter, with a REPL for easy, on-the-fly evaluation
Brainfuck is a simple esoteric language with a minimal subset of commands, you can read more here.
Getting Started
Dependencies
- Install the rustup toolchain for your system.
Installing
- Add Cargo's binary directory to your path environment variables
The rustup installer should do this for you, but if not, it should be located at~/.cargo/bin
(Linux) or%USERPROFILE\.cargo\bin
(Windows). - Simply run
cargo install blazefuck
at a terminal and it'll be installed from crates.io.
Executing program
- Type
blazefuck
at a prompt
$ blazefuck
blazefuck 1.0.0 on windows, run with "-h" or "--help" for more information.
Use "cells" to show the cell stack and "exit" to exit the interpreter.
>>> _
You can then use the normal Brainfuck commands, as follows:
> | Increment the data pointer (to point to the next cell to the right). |
< | Decrement the data pointer (to point to the next cell to the left). |
+ | Increment (increase by one) the byte at the data pointer. |
- | Decrement (decrease by one) the byte at the data pointer. |
. | Output the byte at the data pointer. |
, | Accept one byte of input, storing its value in the byte at the data pointer. |
[ | If the byte at the data pointer is zero, then instead of moving the instruction pointer forward to the next command, jump it forward to the command after the matching ] command. |
] | If the byte at the data pointer is nonzero, then instead of moving the instruction pointer forward to the next command, jump it back to the command after the matching [ command. |
Also cells
and exit
will show the current cell stack and exit the REPL, respectively.
- Alternatively a source file can be specified with
blazefuck [FILE]
, some examples can be found here.
$ blazefuck hello.bf
Hello World!
$ _
- Some flags can be specified as follows:
-d, --debug Shows the cell stack after every command
-s, --strict Activates strict mode
- Strict mode has some key differences, as opposed to normal mode, some programs will not run well with it enabled.
It:- Disallows access of any cells not between #1 and #30000, normal mode wraps around to the beginning or end.
- Disallows cell data being incremented or decremented past 0-255, normal mode also wraps around.
Building from source
- Clone this repository
$ git clone https://github.com/poopsicles/blazefuck
- Switch to the newly created directory
$ cd ./blazefuck
- Compile using cargo
$ cargo build
- Cargo will grab the required dependencies and create the binary at
./target/debug/blazefuck
Version History
- 1.0
- Initial release
- Initial release
License
This project is licensed under the MIT License, more details here.
Dependencies
~3.5MB
~65K SLoC