mut_static 5.0.0

Provides a struct to help create mutable statics with lazy_static.
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

use std::ops::Deref;
use std::sync::RwLockReadGuard;

pub struct ForceSomeRwLockReadGuard<'a, T>
    where T: 'a {
    data: RwLockReadGuard<'a, Option<T>>,
}

impl <'a, T> ForceSomeRwLockReadGuard<'a, T>
    where T: 'a {
    pub fn new<'b>(data: RwLockReadGuard<'b, Option<T>>) -> Self
        where 'b: 'a {
        ForceSomeRwLockReadGuard {
            data: data,
        }
    }
}

impl <'a, T> AsRef<T> for ForceSomeRwLockReadGuard<'a, T> {
    fn as_ref(&self) -> &T {
        match self.data.deref() {
            &Some(ref some) => some,
            &None => panic!("Fatal error getting static. The static was never set. This should be impossible."),
        }
    }
}

impl <'a, T> Deref for ForceSomeRwLockReadGuard<'a, T> {
    type Target = T;

    fn deref(&self) -> &T {
        match self.data.deref() {
            &Some(ref some) => some,
            &None => panic!("Fatal error getting static. The static was never set. This should be impossible."),
        }
    }
}