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
use crate::convert::{Error, FromMrb, TryFromMrb};
use crate::value::types::{Ruby, Rust};
use crate::value::Value;
use crate::Mrb;
impl FromMrb<Option<Vec<u8>>> for Value {
type From = Rust;
type To = Ruby;
fn from_mrb(interp: &Mrb, value: Option<Vec<u8>>) -> Self {
if let Some(value) = value {
Self::from_mrb(interp, value)
} else {
Self::from_mrb(interp, None::<Self>)
}
}
}
impl FromMrb<Option<&[u8]>> for Value {
type From = Rust;
type To = Ruby;
fn from_mrb(interp: &Mrb, value: Option<&[u8]>) -> Self {
if let Some(value) = value {
Self::from_mrb(interp, value)
} else {
Self::from_mrb(interp, None::<Self>)
}
}
}
#[allow(clippy::use_self)]
impl TryFromMrb<Value> for Option<Vec<u8>> {
type From = Ruby;
type To = Rust;
unsafe fn try_from_mrb(
interp: &Mrb,
value: Value,
) -> Result<Self, Error<Self::From, Self::To>> {
let value = <Option<Value>>::try_from_mrb(interp, value)?;
if let Some(item) = value {
Ok(Some(<Vec<u8>>::try_from_mrb(interp, item)?))
} else {
Ok(None)
}
}
}
#[cfg(test)]
mod tests {
use quickcheck_macros::quickcheck;
use crate::convert::{FromMrb, TryFromMrb};
use crate::eval::MrbEval;
use crate::sys;
use crate::value::types::Ruby;
use crate::value::Value;
#[test]
fn fail_convert() {
let interp = crate::interpreter().expect("mrb init");
let value = interp.eval("Object.new").expect("eval");
let result = unsafe { <Option<Vec<u8>>>::try_from_mrb(&interp, value) }.map(|_| ());
assert_eq!(result.map_err(|e| e.from), Err(Ruby::Object));
}
#[allow(clippy::needless_pass_by_value)]
#[quickcheck]
fn convert_to_value(v: Option<Vec<u8>>) -> bool {
let interp = crate::interpreter().expect("mrb init");
let value = Value::from_mrb(&interp, v.clone());
if let Some(v) = v {
let value = unsafe { <Vec<u8>>::try_from_mrb(&interp, value) }.expect("convert");
value == v
} else {
unsafe { sys::mrb_sys_value_is_nil(value.inner()) }
}
}
#[allow(clippy::needless_pass_by_value)]
#[quickcheck]
fn roundtrip(v: Option<Vec<u8>>) -> bool {
let interp = crate::interpreter().expect("mrb init");
let value = Value::from_mrb(&interp, v.clone());
let value = unsafe { <Option<Vec<u8>>>::try_from_mrb(&interp, value) }.expect("convert");
value == v
}
}