brainfuck

A lightning-fast brainfuck interpreter in Rust.

What is brainfuck

Brainfuck is an esoteric programming language created in 1993 by Urban Müller. The language only has 8 commands and a single block of memory consisting only of bytes, as well as a pointer to an byte in the memory.

Op	Description
+	Increment value of pointer by 1
-	Decrement value of pointer by 1
>	Move pointer one cell forwards
<	Move pointer one cell backwards
.	Print the value of pointer as a char
,	Set the value of the pointer from input
[	If the value of the pointer is zero, skip forwards to corresponding ]
]	If the value of the pointer is not zero, skip backwards to corresponding [ ]

Usage

Usage: bf <SRC>

Arguments:
  <SRC>

Options:
  -h, --help  Print help information

The SRC passed to the interpreter can either be the path to a file to interpret, or a string.

foo@bar:~$ ./bf hello_world.bf

foo@bar:~$ ./bf "++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++."

Features

Feature	Description	Default
comments	Interpret any unknown character as a comment	true
debug_token	Print memory content on every #	false
precompiled_patterns	Optimize source code with pre-compiled patterns	true