data structure rewrite

src/updatable.rs

@@ -0,0 +1,56 @@
+pub trait Updatable<Updater>{
+	fn update(&mut self,update:Updater);
+}
+#[derive(Clone,Copy,Hash,Eq,PartialEq)]
+struct InnerId(u32);
+#[derive(Clone)]
+struct Inner{
+	id:InnerId,
+	enabled:bool,
+}
+#[derive(Clone,Copy,Hash,Eq,PartialEq)]
+struct OuterId(u32);
+struct Outer{
+	id:OuterId,
+	inners:std::collections::HashMap<InnerId,Inner>,
+}
+
+enum Update<I,U>{
+	Insert(I),
+	Update(U),
+	Remove
+}
+
+struct InnerUpdate{
+	//#[updatable(Update)]
+	enabled:Option<bool>,
+}
+struct OuterUpdate{
+	//#[updatable(Insert,Update,Remove)]
+	inners:std::collections::HashMap<InnerId,Update<Inner,InnerUpdate>>,
+	//#[updatable(Update)]
+	//inners:std::collections::HashMap<InnerId,InnerUpdate>,
+}
+impl Updatable<InnerUpdate> for Inner{
+	fn update(&mut self,update:InnerUpdate){
+		if let Some(enabled)=update.enabled{
+			self.enabled=enabled;
+		}
+	}
+}
+impl Updatable<OuterUpdate> for Outer{
+	fn update(&mut self,update:OuterUpdate){
+		for (id,up) in update.inners{
+			match up{
+				Update::Insert(new_inner)=>self.inners.insert(id,new_inner),
+				Update::Update(inner_update)=>self.inners.get_mut(&id).map(|inner|{
+					let old=inner.clone();
+					inner.update(inner_update);
+					old
+				}),
+				Update::Remove=>self.inners.remove(&id),
+			};
+		}
+	}
+}
+//*/