tanxium 0.1.2

Standalone JavaScript/TypeScript runtime for Yasumu
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

use boa_engine::{
    js_str, js_string, object::ObjectInitializer, property::Attribute, JsError, JsValue,
    NativeFunction,
};

use crate::tanxium::Tanxium;

/// Initialize the runtime performance object
pub fn performance_init(tanxium: &mut Tanxium) -> Result<(), JsError> {
    if !tanxium.options.builtins.performance {
        return Ok(());
    }

    let context = &mut tanxium.context;
    let time_origin = std::time::SystemTime::now()
        .duration_since(std::time::UNIX_EPOCH)
        .unwrap()
        .as_secs_f64();
    let performance = ObjectInitializer::new(context)
        .function(
            NativeFunction::from_fn_ptr(|_, _, _| {
                let result = std::time::SystemTime::now()
                    .duration_since(std::time::UNIX_EPOCH)
                    .unwrap()
                    .as_secs_f64();

                Ok(JsValue::Rational(result))
            }),
            js_string!("now"),
            0,
        )
        .property(
            js_str!("timeOrigin"),
            JsValue::Rational(time_origin),
            Attribute::all(),
        )
        .build();

    context.register_global_property(js_str!("performance"), performance, Attribute::all())?;

    Ok(())
}