logic-mesh 1.0.0

Control logic engine using event based and reactive blocks written 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
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
69
70
71
72
73
74
75
76
77
78
79
80

// Copyright (c) 2022-2024, Radu Racariu.

use uuid::Uuid;

use crate::base::{
    block::{Block, BlockDesc, BlockProps, BlockState},
    input::{InputProps, input_reader::InputReader},
    output::Output,
};

use libhaystack::{
    encoding::zinc,
    val::{Value, kind::HaystackKind},
};

use crate::{blocks::InputImpl, blocks::OutputImpl};

/// Outputs the parsed boolean value of the input.
#[block]
#[derive(BlockProps, Debug)]
#[category = "misc"]
pub struct ParseBool {
    #[input(name = "in", kind = "Str")]
    pub input: InputImpl,
    #[output(kind = "Bool")]
    pub out: OutputImpl,
}

impl Block for ParseBool {
    async fn execute(&mut self) {
        self.read_inputs_until_ready().await;

        if let Some(Value::Str(input)) = self.input.get_value() {
            let parsed = input.value.parse::<bool>();
            if let Ok(parsed) = parsed {
                self.out.set(parsed.into());
            } else if let Ok(Value::Bool(bool)) = zinc::decode::from_str(&input.value) {
                self.out.set(bool.into());
            }
        }
    }
}

#[cfg(test)]
mod test {

    use crate::{
        base::block::Block, base::block::test_utils::write_block_inputs, blocks::misc::ParseBool,
    };

    #[tokio::test]
    async fn parse_true() {
        let mut block = ParseBool::new();

        write_block_inputs([(&mut block.input, "true")]).await;

        block.execute().await;
        assert_eq!(block.out.value, true.into());

        write_block_inputs([(&mut block.input, "T")]).await;

        block.execute().await;
        assert_eq!(block.out.value, true.into());
    }

    #[tokio::test]
    async fn parse_false() {
        let mut block = ParseBool::new();

        write_block_inputs([(&mut block.input, "false")]).await;

        block.execute().await;
        assert_eq!(block.out.value, false.into());

        write_block_inputs([(&mut block.input, "F")]).await;

        block.execute().await;
        assert_eq!(block.out.value, false.into());
    }
}