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
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174

use super::super::simple::structs::*;
use super::super::simple::trait_defs::*;
use super::super::simple::trait_groups::*;
use cglue_macro::*;

#[cglue_trait]
pub trait ObjRefReturn {
    #[wrap_with_obj_ref(TA)]
    type ReturnType: TA + 'static;

    fn orr_1(&self) -> &Self::ReturnType;
}

impl ObjRefReturn for SA {
    type ReturnType = SA;

    fn orr_1(&self) -> &SA {
        self
    }
}

#[cglue_trait]
pub trait ObjMutReturn {
    #[wrap_with_obj_mut(TA)]
    type ReturnType: TA + 'static;

    fn omr_1(&mut self) -> &mut Self::ReturnType;
}

impl ObjMutReturn for SA {
    type ReturnType = SA;

    fn omr_1(&mut self) -> &mut SA {
        self
    }
}

#[cglue_trait]
pub trait GroupRefReturn {
    #[wrap_with_group_ref(TestGroup)]
    type ReturnType: TA + 'static;

    fn grr_1(&self) -> &Self::ReturnType;
}

impl GroupRefReturn for SA {
    type ReturnType = SA;

    fn grr_1(&self) -> &SA {
        self
    }
}

impl GroupRefReturn for SB {
    type ReturnType = SB;

    fn grr_1(&self) -> &SB {
        self
    }
}

#[cglue_trait]
pub trait GroupMutReturn {
    #[wrap_with_group_mut(TestGroup)]
    type ReturnType: TA + 'static;

    fn gmr_1(&mut self) -> &mut Self::ReturnType;
}

impl GroupMutReturn for SA {
    type ReturnType = SA;

    fn gmr_1(&mut self) -> &mut SA {
        self
    }
}

#[cglue_trait]
pub trait GroupMutReturnUnbounded {
    #[wrap_with_group_mut(TestGroup)]
    type ReturnType: TA;

    fn gmru_1(&mut self) -> &mut Self::ReturnType;
}

impl GroupMutReturnUnbounded for SA {
    type ReturnType = SA;

    fn gmru_1(&mut self) -> &mut SA {
        self
    }
}

#[cglue_trait]
pub trait GroupLtMutReturn<'a> {
    #[wrap_with_group_mut(TestGroup)]
    type ReturnType: TA + 'a;

    fn glmr_1(&'a mut self) -> &'a mut Self::ReturnType;
}

impl<'a> GroupLtMutReturn<'a> for SA {
    type ReturnType = SA;

    fn glmr_1(&mut self) -> &mut SA {
        self
    }
}

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

    let obj = trait_obj!(sa as ObjRefReturn);

    let obj2 = obj.orr_1();

    assert_eq!(obj2.ta_1(), 5);
}

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

    let mut obj = trait_obj!(sa as ObjMutReturn);

    let obj2 = obj.omr_1();

    assert_eq!(obj2.ta_1(), 5);
}

#[test]
fn use_group_ref() {
    let sa = SB {};

    let obj = trait_obj!(sa as GroupRefReturn);

    let obj2 = obj.grr_1();

    assert_eq!(obj2.ta_1(), 6);
}

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

    let mut obj = trait_obj!(sa as GroupMutReturn);

    let obj2 = obj.gmr_1();

    assert_eq!(obj2.ta_1(), 5);
}

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

    let mut obj = trait_obj!(&mut sa as GroupMutReturnUnbounded);

    let obj2 = obj.gmru_1();

    assert_eq!(obj2.ta_1(), 5);
}

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

    let mut obj = trait_obj!(sa as GroupLtMutReturn);

    let obj2 = obj.glmr_1();

    assert_eq!(obj2.ta_1(), 5);
}