libutils_cage/
mod.rs

1//^
2//^ HEAD
3//^
4
5//> HEAD -> FEATURES
6#![feature(test)]
7#![feature(const_trait_impl)]
8#![feature(const_default)]
9#![feature(const_convert)]
10#![feature(lock_value_accessors)]
11
12//> HEAD -> CRATES
13extern crate test;
14
15//> HEAD -> MODULES
16#[cfg(test)]
17mod benches;
18mod conversions;
19#[cfg(test)]
20mod tests;
21
22//> HEAD -> STD
23use std::sync::RwLock;
24
25//> HEAD -> CORE
26use core::{
27    ops::{
28        Deref,
29        DerefMut
30    },
31    hash::{
32        Hash,
33        Hasher
34    }
35};
36
37
38//^
39//^ CAGE
40//^
41
42//> CAGE -> DEFINITION
43#[derive(Debug)]
44pub struct Cage<Type: ?Sized> {
45    being: RwLock<Type>
46}
47
48//> CAGE -> IMPLEMENTATION
49impl<Type: ?Sized> Cage<Type> {
50    pub fn read<Returns>(&self, closure: impl FnOnce(&Type) -> Returns) -> Returns {
51        return closure(self.being.read().unwrap().deref())
52    }
53    pub fn write<Returns>(&self, closure: impl FnOnce(&mut Type) -> Returns) -> Returns {
54        return closure(self.being.write().unwrap().deref_mut())
55    }
56    pub const fn new(value: Type) -> Cage<Type> where Type: Sized {return Self {
57        being: RwLock::new(value)
58    }}
59    pub fn release(self) -> Type where Type: Sized {return self.being.into_inner().unwrap()}
60    pub fn replace(&self, value: Type) -> Type where Type: Sized {self.being.replace(value).unwrap()}
61    pub fn cloned(&self) -> Type where Type: Clone {self.being.read().unwrap().clone()}
62    pub fn get(&self) -> Type where Type: Copy {*self.being.read().unwrap()}
63}
64
65//> CAGE -> DEFAULT
66const impl<Type: [const] Default> Default for Cage<Type> {
67    fn default() -> Self {return Self::new(Type::default())}
68}
69
70//> CAGE -> CLONE
71impl<Type: Clone + ?Sized> Clone for Cage<Type> {
72    fn clone(&self) -> Self {return Self::new(self.read(|value| value.clone()))}
73}
74
75//> CAGE -> HASH
76impl<Type: Hash + ?Sized> Hash for Cage<Type> {
77    fn hash<H: Hasher>(&self, state: &mut H) {return self.read(|value| value.hash(state))}
78}
libutils_cage/mod.rs

libutils_cage/
mod.rs
