yabfr 2.0.0

⚡blazingly fast brainf**k interpreter made in rust (yet another brainf**k _in_ rust)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

use crate::instructions::Instruction;

fn execute(instructions: &Vec<Instruction>, tape: &mut Vec<u8>, data_ptr: &mut usize) -> String {
    let mut output = "".to_string();
    for instruction in instructions {
        match instruction {
            Instruction::Loop(nested) => {
                while tape[*data_ptr] != 0 {
                    execute(nested, tape, data_ptr);
                }
            }
            Instruction::Write => output.push(tape[*data_ptr] as char),
            Instruction::Read => {
                let input: [u8; 1] = [0; 1];
                tape[*data_ptr] = input[0];
            }
            Instruction::IncrementPointer => *data_ptr += 1,
            Instruction::DecrementPointer => *data_ptr -= 1,
            Instruction::Increment => tape[*data_ptr] += 1,
            Instruction::Decrement => tape[*data_ptr] -= 1,
        }
    }
    output
}

pub fn run(instructions: &Vec<Instruction>) -> String {
    let mut tape: Vec<u8> = vec![0; 1024];
    let mut data_ptr = 512;

    let output = execute(instructions, &mut tape, &mut data_ptr);
    output
}