It is just a BF interpreter.

BF is an esolang, an esoteric programming language, which means it is not designed for actual development, but only for fun. Besides, it also indicates that BF is fully Turing-complete.

Usage

Run

• Press G to open the dialog screen.
• Type BF code into the "Code" panel.
• You can type input into the "Input" panel if needed.
• You can change the length of tape of memory cells by sliding "Array Length" silder.(Default value is 100). Some programs require longer tape, which probably influences performance.
• Click "save" to save the code and input.
• Press G again and click "run" to run the interpreter.

Stop

• Use /scoreboard players set #cmd_stop brainfuck.re 1 to stop the program.

Modification

• Use /function brainfuck:debug/panel to modify some variables.

Link

• Implementation Detail. https://cr-019.github.io/datapack-index/feature/archive/202602/6/content.html.
• Video. https://www.bilibili.com/video/BV1TLzqBLEEZ/.