cglue 0.3.5

FFI safe abstractions for making plugins and C-compatible libraries
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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112

use super::simple::structs::*;
use crate::arc::*;
//use crate::boxed::*;
use crate::*;
use std::sync::Arc;

#[cglue_trait]
pub trait DoThings {
    fn dt_1(&self) -> usize;
}

impl DoThings for SA {
    fn dt_1(&self) -> usize {
        55
    }
}

#[cglue_trait]
pub trait DoThingsSend: Send {
    fn dts_1(&self) -> usize;
}

impl DoThingsSend for SA {
    fn dts_1(&self) -> usize {
        55
    }
}

#[cglue_trait]
pub trait DoerGetter {
    #[wrap_with_obj(DoThings)]
    type ReturnType: DoThings;

    fn dget_1(&self) -> Self::ReturnType;
}

impl DoerGetter for SA {
    type ReturnType = SA;

    fn dget_1(&self) -> Self::ReturnType {
        SA {}
    }
}

/*#[test]
fn use_dothings() {
    let sa = SA {};
    let wrapped = CBox::from((sa, CArc::from(()).into_opt()));
    assert_eq!(wrapped.dt_1(), 55);
}*/

#[test]
fn use_getter_obj() {
    let sa = SA {};

    let arc = std::sync::Arc::from(());

    assert_eq!(Arc::strong_count(&arc), 1);

    let opt_arc = CArc::<()>::from(arc.clone());

    assert_eq!(Arc::strong_count(&arc), 2);

    let getter = trait_obj!((sa, opt_arc) as DoerGetter);

    assert_eq!(Arc::strong_count(&arc), 2);

    let doer = getter.dget_1();

    assert_eq!(Arc::strong_count(&arc), 3);

    let _ = getter.dget_1();

    assert_eq!(Arc::strong_count(&arc), 3);

    std::mem::drop(getter);

    assert_eq!(Arc::strong_count(&arc), 2);

    std::mem::drop(doer);

    assert_eq!(Arc::strong_count(&arc), 1);
}

#[test]
fn use_clone_obj() {
    let sa = SA {};

    let arc = std::sync::Arc::from(());

    assert_eq!(Arc::strong_count(&arc), 1);

    let opt_arc = CArc::<()>::from(arc.clone());

    assert_eq!(Arc::strong_count(&arc), 2);

    let obj: crate::ext::CloneBaseArcBox<_, _> = trait_obj!((sa, opt_arc) as Clone);

    assert_eq!(Arc::strong_count(&arc), 2);

    let cloned = obj.clone();

    assert_eq!(Arc::strong_count(&arc), 3);

    std::mem::drop(cloned);

    assert_eq!(Arc::strong_count(&arc), 2);

    std::mem::drop(obj);

    assert_eq!(Arc::strong_count(&arc), 1);
}