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#![deny(missing_docs)]
#[cfg(test)]
mod tests;
pub trait AutoMapped {
type Key;
fn key(&self) -> &Self::Key;
}
macro_rules! implementation {
($outer: ident, $inner: ident, $bounds: path) => {
use std::collections::$inner;
#[derive(
Debug,
Clone,
PartialEq,
Eq,
shrinkwraprs::Shrinkwrap,
derive_more::From,
derive_more::Into,
)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[shrinkwrap(mutable, unsafe_ignore_visibility)]
pub struct $outer<T: AutoMapped>($inner<T::Key, T>)
where
T::Key: $bounds;
impl<T: AutoMapped> Default for $outer<T>
where
T::Key: $bounds,
{
fn default() -> Self {
Self($inner::default())
}
}
impl<T: AutoMapped> $outer<T>
where
T::Key: $bounds,
{
pub fn new() -> Self {
Self($inner::new())
}
pub fn insert(&mut self, val: T) -> Option<T> {
self.0.insert(val.key().clone(), val)
}
pub fn into_iter(self) -> impl Iterator<Item = (T::Key, T)> {
self.0.into_iter()
}
}
};
}
implementation!(AutoHashMap, HashMap, AutoHashMapKey);
implementation!(AutoBTreeMap, BTreeMap, AutoBTreeMapKey);
cfg_if::cfg_if! {
if #[cfg(feature = "serde")] {
pub trait AutoHashMapKey: serde::Serialize + serde::de::DeserializeOwned + Clone + std::hash::Hash + PartialEq + Eq {}
impl<T> AutoHashMapKey for T where T: serde::Serialize + serde::de::DeserializeOwned + Clone + std::hash::Hash + PartialEq + Eq {}
pub trait AutoBTreeMapKey: serde::Serialize + serde::de::DeserializeOwned + Clone + PartialOrd + Ord {}
impl<T> AutoBTreeMapKey for T where T: serde::Serialize + serde::de::DeserializeOwned + Clone + PartialOrd + Ord {}
} else {
pub trait AutoHashMapKey: Clone + std::hash::Hash + PartialEq + Eq {}
impl<T> AutoHashMapKey for T where T: Clone + std::hash::Hash + PartialEq + Eq {}
pub trait AutoBTreeMapKey: Clone + PartialOrd + Ord {}
impl<T> AutoBTreeMapKey for T where T: Clone + PartialOrd + Ord {}
}
}