https://github.com/jchmrt/etbi

endless tape brainfuck interpreter
https://github.com/jchmrt/etbi

Last synced: about 2 months ago
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endless tape brainfuck interpreter

• Host: GitHub
• URL: https://github.com/jchmrt/etbi
• Owner: jchmrt
• License: gpl-3.0
• Created: 2015-10-15T10:59:03.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2018-04-10T08:40:21.000Z (about 6 years ago)
• Last Synced: 2024-01-29T06:17:29.659Z (5 months ago)
• Language: C
• Size: 83 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README
  • License: COPYING

Lists

• AwesomeInterpreter - etbi

README

        

                  ENDLESS TAPE BRAINFUCK INTERPRETER

                            ______________

__________________________ /              \ __________________________

   /   /   /   /   /   /  /      etbi      \  \   \   \   \   \   \

0 / 0 / 0 / 0 / 0 / 0 / 0/__________________\0 \ 0 \ 0 \ 0 \ 0 \ 0 \ 0

_/___/___/___/___/___/___|                  |___\___\___\___\___\___\_

                         |     +-<>.,[]     |

                         |__________________|

 a brainfuck interpreter featuring an endless tape in both directions

----------------------------------------------------------------------

etbi can interpret brainfuck source files with an endless tape of

cells with the size of a char, initially set to 0. Use it with `etbi

FILE', or run one of the built-in examples with `etbi -e NAME'. You

can always get help with `etbi --help'.

etbi also features an interactive REPL-like (Read Eval Print Loop)

mode, which you can access using `etbi -i'. In the interactive mode

you can easily test snippets of brainfuck code, after which the new

state of the tape is shown for easy debugging. The interactive mode

features a few other modes, which you can see by typing `!help'.

etbi implements a few simple optimizations:

- Movement contraction: multiple movement instructions following

  each other are added together to one instruction with an argument.

- Alteration contraction: multiple alteration instructions following

  each other are added together to one instruction with an argument.

- Clear loop optimization: loops which can only end with the current

  cell ending up empty such as '[-]' are converted to a single clear

  instruction which sets the current cell to 0.

- Scan loop optimization: loops which are scanning all cells in a

  direction until they find one set to 0, such as '[>]' are converted

  to a single instruction which uses memchr or memrchr to find one

  faster.

To install etbi simply run `./configure && make && sudo make install'.

etbi is licensed under the GPLv3+, see `COPYING' for the full license

text.