shadow_shim_helper_rs/
option.rs

Help
1use vasi::VirtualAddressSpaceIndependent;
2
3#[derive(
4    Copy,
5    Clone,
6    Debug,
7    Default,
8    PartialEq,
9    Eq,
10    PartialOrd,
11    Ord,
12    Hash,
13    VirtualAddressSpaceIndependent,
14)]
15#[repr(C)]
16pub enum FfiOption<T> {
17    #[default]
18    None,
19    Some(T),
20}
21
22impl<T> FfiOption<T> {
23    pub fn unwrap(self) -> T {
24        match self {
25            Self::Some(x) => x,
26            Self::None => panic!("called `FfiOption::unwrap()` on a `None` value"),
27        }
28    }
29
30    pub fn unwrap_or(self, default: T) -> T {
31        match self {
32            Self::Some(x) => x,
33            Self::None => default,
34        }
35    }
36
37    pub fn take(&mut self) -> Self {
38        let mut other = Self::None;
39        std::mem::swap(self, &mut other);
40        other
41    }
42
43    pub fn replace(&mut self, value: T) -> Self {
44        let mut other = Self::Some(value);
45        std::mem::swap(self, &mut other);
46        other
47    }
48
49    pub fn as_ref(&self) -> FfiOption<&T> {
50        match self {
51            Self::Some(x) => FfiOption::Some(x),
52            Self::None => FfiOption::None,
53        }
54    }
55
56    pub fn as_mut(&mut self) -> FfiOption<&mut T> {
57        match self {
58            Self::Some(x) => FfiOption::Some(x),
59            Self::None => FfiOption::None,
60        }
61    }
62}
63
64impl<T> From<Option<T>> for FfiOption<T> {
65    fn from(x: Option<T>) -> Self {
66        match x {
67            Some(x) => Self::Some(x),
68            None => Self::None,
69        }
70    }
71}
shadow_shim_helper_rs/option.rs

shadow_shim_helper_rs/
option.rs
