Add alternative time binner

items_2/src/timebin.rs

@@ -0,0 +1,29 @@
+use std::fmt;
+
+pub trait TimeBinner: fmt::Debug + Unpin {
+    type Input;
+    type Output;
+
+    fn ingest(&mut self, item: &mut Self::Input);
+
+    fn set_range_complete(&mut self);
+
+    fn bins_ready_count(&self) -> usize;
+
+    fn bins_ready(&mut self) -> Option<Self::Output>;
+
+    /// If there is a bin in progress with non-zero count, push it to the result set.
+    /// With push_empty == true, a bin in progress is pushed even if it contains no counts.
+    fn push_in_progress(&mut self, push_empty: bool);
+
+    /// Implies `Self::push_in_progress` but in addition, pushes a zero-count bin if the call
+    /// to `push_in_progress` did not change the result count, as long as edges are left.
+    /// The next call to `Self::bins_ready_count` must return one higher count than before.
+    fn cycle(&mut self);
+}
+
+pub trait TimeBinnable: fmt::Debug + Sized {
+    type TimeBinner: TimeBinner<Input = Self>;
+
+    fn time_binner_new(&self, edges: Vec<u64>, do_time_weight: bool) -> Self::TimeBinner;
+}