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#[derive(Clone,Copy,Debug,Default,Eq,PartialEq,Hash)]
#[allow(missing_docs)]
pub struct Switch<T> {
pub value : T,
is_on : bool,
}
impl<T> Switch<T> {
pub fn new(value:T, is_on:bool) -> Self {
Self {value,is_on}
}
#[allow(non_snake_case)]
pub fn On(value:T) -> Self {
Self::new(value,true)
}
#[allow(non_snake_case)]
pub fn Off(value:T) -> Self {
Self::new(value,false)
}
}
impl<T> Switch<T> {
pub fn switch(&mut self, is_on:bool) {
self.is_on = is_on;
}
pub fn toggle(&mut self) {
self.is_on = !self.is_on;
}
pub fn switched(mut self, is_on:bool) -> Self {
self.switch(is_on);
self
}
pub fn toggled(mut self) -> Self {
self.toggle();
self
}
}
impl<T> Switch<T> {
pub fn is_on(&self) -> bool {
self.is_on
}
pub fn is_off(&self) -> bool {
!self.is_on()
}
}
impl<T> Switch<T> {
pub fn on(&self) -> Option<&T> {
if self.is_on() { Some(&self.value) } else { None }
}
pub fn off(&self) -> Option<&T> {
if self.is_off() { Some(&self.value) } else { None }
}
pub fn into_on(self) -> Option<T> {
if self.is_on() { Some(self.value) } else { None }
}
pub fn into_off(self) -> Option<T> {
if self.is_off() { Some(self.value) } else { None }
}
pub fn into_on_or(self, default:T) -> T {
if self.is_on() { self.value } else { default }
}
pub fn into_off_or(self, default:T) -> T {
if self.is_off() { self.value } else { default }
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_into_on_or() {
let switch_on = Switch::On(1.0);
assert_eq!(switch_on.into_on_or(0.0), 1.0);
let switch_off = Switch::Off(2.0);
assert_eq!(switch_off.into_on_or(0.0), 0.0);
}
#[test]
fn test_into_off_or() {
let switch_on = Switch::On(1.0);
assert_eq!(switch_on.into_off_or(0.0), 0.0);
let switch_off = Switch::Off(2.0);
assert_eq!(switch_off.into_off_or(0.0), 2.0);
}
}