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use serde::{Deserialize, Serialize};
use crate::merge::Merge;
#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
pub struct MergingOption<T>(Option<T>)
where
T: Merge + Default;
impl<T> MergingOption<T>
where
T: Merge + Default,
{
pub fn into_inner(self) -> Option<T> {
self.0
}
pub fn as_ref(&self) -> Option<&T> {
self.0.as_ref()
}
}
impl<T> From<Option<T>> for MergingOption<T>
where
T: Merge + Default,
{
#[inline]
fn from(v: Option<T>) -> Self {
Self(v)
}
}
impl<T> Merge for MergingOption<T>
where
T: Merge + Default,
{
fn merge(&mut self, other: Self) {
if let Some(other) = other.0 {
if self.0.is_none() {
self.0 = Some(Default::default());
}
self.0.as_mut().unwrap().merge(other);
}
}
}