Add handler for accounting and refactor

crates/items_2/src/accounting.rs

@@ -0,0 +1,37 @@
+use items_0::Empty;
+use items_0::Extendable;
+use items_0::WithLen;
+use serde::Deserialize;
+use serde::Serialize;
+use std::collections::VecDeque;
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct AccountingEvents {
+    pub tss: VecDeque<u64>,
+    pub bytes: VecDeque<u64>,
+}
+
+impl Empty for AccountingEvents {
+    fn empty() -> Self {
+        Self {
+            tss: VecDeque::new(),
+            bytes: VecDeque::new(),
+        }
+    }
+}
+
+impl WithLen for AccountingEvents {
+    fn len(&self) -> usize {
+        self.tss.len()
+    }
+}
+
+impl Extendable for AccountingEvents {
+    fn extend_from(&mut self, src: &mut Self) {
+        use core::mem::replace;
+        let v = replace(&mut src.tss, VecDeque::new());
+        self.tss.extend(v.into_iter());
+        let v = replace(&mut src.bytes, VecDeque::new());
+        self.bytes.extend(v.into_iter());
+    }
+}

crates/items_2/src/items_2.rs

@@ -1,3 +1,4 @@
+pub mod accounting;
 pub mod binnedcollected;
 pub mod binsdim0;
 pub mod binsxbindim0;