brainfck 0.3.0

Brainfuck interpreter
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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68

use super::*;

#[test]
fn no_std_test() {
    let ins = b"++++[>+<-]>.";

    let mut out = TinyVec::<_, 10>::new();
    let mut interpre = Interpreter::new(&[], [].iter().copied(),  &mut out);

    interpre.push_instructions_iter(ins.iter().copied());
    interpre.run().unwrap();

    assert_eq!(out, [4]);
}

#[test]
#[should_panic(expected = "Alloc is not enabled. Can't switch the buffer to the heap")]
fn default_size_panics() {
    let ins = b"++++[>+<-]>.>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>";

    let mut out = TinyVec::<_, 10>::new();
    let mut interpre = Interpreter::new(&[], [].iter().copied(),  &mut out);

    interpre.push_instructions_iter(ins.iter().copied());
    interpre.run().unwrap();

    assert_eq!(out, [4]);
}

#[test]
fn custom_size_no_panic() {
    let ins = b"++++[>+<-]>.>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>";

    let mut out = TinyVec::<_, 10>::new();
    let mut interpre = Interpreter::<'_, _, _, 100, 200, 100>::with_custom_stack(&[], [].iter().copied(),  &mut out);

    interpre.push_instructions_iter(ins.iter().copied());
    interpre.run().unwrap();

    assert_eq!(out, [4]);
}

#[test]
fn tiny_vec_test_loops() {
    let prog = b"+[[[[[-]]]]]";

    let mut inter = Interpreter::<'_, _, _>::with_custom_stack(prog, [].iter().copied(),  NoOutput);

    inter.step().unwrap(); // the '+'
    for _ in 0..OPEN_LOOPS_TINY_SIZE {
        inter.step().unwrap();
    }
}

#[test]
#[should_panic]
fn tiny_vec_test_loops_panic() {
    let prog = b"+[[[[[[[-]]]]]";

    let mut inter = Interpreter::<'_, _, _>::with_custom_stack(prog, [].iter().copied(),  NoOutput);

    inter.step().unwrap(); // the '+'
    for _ in 0..OPEN_LOOPS_TINY_SIZE {
        inter.step().unwrap();
    }

    inter.step().unwrap();
}