evalit 0.1.1

a toy 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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83

use evalit::{Environment, Interpreter, ValueRef};

#[cfg(not(feature = "async"))]
fn main() {
    let mut env = Environment::new();

    env.define_function("println", println);

    let script = r#"
    println("hello, world");

    let sum = 0;
    for i in 0..=10 {
        sum += i;
    }

    println(resp);


    return sum;
    "#;

    let retval = Interpreter::eval_script(script, env).unwrap();

    println!("ret: {retval:?}");
}

#[cfg(feature = "async")]
#[tokio::main]
async fn main() {
    let mut env = Environment::new();

    env.define_function("println", println);
    env.define_function("http_get", http_get);

    let script = r#"
    println("hello, world");

    let sum = 0;
    for i in 0..=10 {
        sum += i;
    }

    let resp = http_get("https://bing.com").await;


    println(resp);


    return sum;
    "#;

    let retval = Interpreter::eval_script_async(script, env).await.unwrap();

    println!("ret: {retval:?}");
}

#[cfg(feature = "async")]
use evalit::{Promise, Value};

#[cfg(feature = "async")]
fn http_get(url: String) -> Promise {
    use evalit::Promise;

    Promise::new(async move {
        println!("url: {url:?}");

        let resp = reqwest::get(url).await.unwrap();
        let body = resp.text().await.unwrap();

        Value::new(body)
    })
}

fn println(args: &[ValueRef]) {
    let s = args
        .iter()
        .map(|v| format!("{v}"))
        .collect::<Vec<String>>()
        .join("");

    println!("{s}");
}