lib-nested/src/index/mod.rs

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pub mod map_item;
pub mod map_key;
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use {
std::{
sync::{Arc, RwLock},
ops::Deref,
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},
crate::core::View
};
//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
pub trait IndexView<Key> : View<Msg = Key> {
type Item;
fn get(&self, key: &Key) -> Option<Self::Item>;
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// todo: AreaIterator enum to switch between Allocated and Procedural area
fn area(&self) -> Option<Vec<Key>> {
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None
}
}
//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
impl<Key, V: IndexView<Key>> IndexView<Key> for RwLock<V> {
type Item = V::Item;
fn get(&self, key: &Key) -> Option<Self::Item> {
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self.read().unwrap().get(key)
}
fn area(&self) -> Option<Vec<Key>> {
self.read().unwrap().area()
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}
}
impl<Key, V: IndexView<Key>> IndexView<Key> for Arc<V> {
type Item = V::Item;
fn get(&self, key: &Key) -> Option<Self::Item> {
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self.deref().get(key)
}
fn area(&self) -> Option<Vec<Key>> {
self.deref().area()
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}
}
//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
pub trait ImplIndexView : Send + Sync {
type Key;
type Value;
fn get(&self, key: &Self::Key) -> Option<Self::Value>;
fn area(&self) -> Option<Vec<Self::Key>> {
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None
}
}
impl<V: ImplIndexView> View for V {
type Msg = V::Key;
}
impl<V: ImplIndexView> IndexView<V::Key> for V {
type Item = V::Value;
fn get(&self, key: &V::Key) -> Option<Self::Item> {
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(self as &V).get(key)
}
fn area(&self) -> Option<Vec<V::Key>> {
(self as &V).area()
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}
}