move HybridSet to own file

Signed-off-by: kernelkind <kernelkind@gmail.com>

crates/notedeck_columns/src/actionbar.rs

@@ -3,10 +3,8 @@ use crate::{
     nav::{RouterAction, RouterType},
     route::Route,
     timeline::{
-        thread::{
-            selected_has_at_least_n_replies, InsertionResponse, NoteSeenFlags, ThreadNode, Threads,
-        },
-        ThreadSelection, TimelineCache, TimelineKind,
+        thread::{selected_has_at_least_n_replies, NoteSeenFlags, ThreadNode, Threads},
+        InsertionResponse, ThreadSelection, TimelineCache, TimelineKind,
     },
     view_state::ViewState,
 };

crates/notedeck_columns/src/timeline/hybrid_set.rs

@@ -0,0 +1,99 @@
+use std::{
+    collections::{BTreeSet, HashSet},
+    hash::Hash,
+};
+
+use crate::timeline::MergeKind;
+
+/// Affords:
+/// - O(1) contains
+/// - O(log n) sorted insertion
+pub struct HybridSet<T> {
+    reversed: bool,
+    lookup: HashSet<T>,   // fast deduplication
+    ordered: BTreeSet<T>, // sorted iteration
+}
+
+impl<T> Default for HybridSet<T> {
+    fn default() -> Self {
+        Self {
+            reversed: Default::default(),
+            lookup: Default::default(),
+            ordered: Default::default(),
+        }
+    }
+}
+
+pub enum InsertionResponse {
+    AlreadyExists,
+    Merged(MergeKind),
+}
+
+impl<T: Copy + Ord + Eq + Hash> HybridSet<T> {
+    pub fn insert(&mut self, val: T) -> InsertionResponse {
+        if !self.lookup.insert(val) {
+            return InsertionResponse::AlreadyExists;
+        }
+
+        let front_insertion = match self.ordered.iter().next() {
+            Some(first) => (val >= *first) == self.reversed,
+            None => true,
+        };
+
+        self.ordered.insert(val); // O(log n)
+
+        InsertionResponse::Merged(if front_insertion {
+            MergeKind::FrontInsert
+        } else {
+            MergeKind::Spliced
+        })
+    }
+}
+
+impl<T: Eq + Hash> HybridSet<T> {
+    pub fn contains(&self, val: &T) -> bool {
+        self.lookup.contains(val) // O(1)
+    }
+}
+
+impl<T> HybridSet<T> {
+    pub fn iter(&self) -> HybridIter<'_, T> {
+        HybridIter {
+            inner: self.ordered.iter(),
+            reversed: self.reversed,
+        }
+    }
+
+    pub fn new(reversed: bool) -> Self {
+        Self {
+            reversed,
+            ..Default::default()
+        }
+    }
+}
+
+impl<'a, T> IntoIterator for &'a HybridSet<T> {
+    type Item = &'a T;
+    type IntoIter = HybridIter<'a, T>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        self.iter()
+    }
+}
+
+pub struct HybridIter<'a, T> {
+    inner: std::collections::btree_set::Iter<'a, T>,
+    reversed: bool,
+}
+
+impl<'a, T> Iterator for HybridIter<'a, T> {
+    type Item = &'a T;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        if self.reversed {
+            self.inner.next_back()
+        } else {
+            self.inner.next()
+        }
+    }
+}

crates/notedeck_columns/src/timeline/mod.rs

@@ -26,11 +26,13 @@ use std::{rc::Rc, time::SystemTime};
 use tracing::{debug, error, info, warn};
 
 pub mod cache;
+mod hybrid_set;
 pub mod kind;
 pub mod route;
 pub mod thread;
 
 pub use cache::TimelineCache;
+pub use hybrid_set::{HybridSet, InsertionResponse};
 pub use kind::{ColumnTitle, PubkeySource, ThreadSelection, TimelineKind};
 
 #[derive(Copy, Clone, Eq, PartialEq, Debug, Default)]

crates/notedeck_columns/src/timeline/thread.rs

@@ -1,8 +1,3 @@
-use std::{
-    collections::{BTreeSet, HashSet},
-    hash::Hash,
-};
-
 use egui_nav::ReturnType;
 use egui_virtual_list::VirtualList;
 use enostr::{NoteId, RelayPool};
@@ -13,7 +8,7 @@ use notedeck::{NoteCache, NoteRef, UnknownIds};
 use crate::{
     actionbar::{process_thread_notes, NewThreadNotes},
     multi_subscriber::ThreadSubs,
-    timeline::MergeKind,
+    timeline::hybrid_set::HybridSet,
 };
 
 use super::ThreadSelection;
@@ -33,99 +28,6 @@ pub enum ParentState {
     Parent(NoteId),
 }
 
-/// Affords:
-/// - O(1) contains
-/// - O(log n) sorted insertion
-pub struct HybridSet<T> {
-    reversed: bool,
-    lookup: HashSet<T>,   // fast deduplication
-    ordered: BTreeSet<T>, // sorted iteration
-}
-
-impl<T> Default for HybridSet<T> {
-    fn default() -> Self {
-        Self {
-            reversed: Default::default(),
-            lookup: Default::default(),
-            ordered: Default::default(),
-        }
-    }
-}
-
-pub enum InsertionResponse {
-    AlreadyExists,
-    Merged(MergeKind),
-}
-
-impl<T: Copy + Ord + Eq + Hash> HybridSet<T> {
-    pub fn insert(&mut self, val: T) -> InsertionResponse {
-        if !self.lookup.insert(val) {
-            return InsertionResponse::AlreadyExists;
-        }
-
-        let front_insertion = match self.ordered.iter().next() {
-            Some(first) => (val >= *first) == self.reversed,
-            None => true,
-        };
-
-        self.ordered.insert(val); // O(log n)
-
-        InsertionResponse::Merged(if front_insertion {
-            MergeKind::FrontInsert
-        } else {
-            MergeKind::Spliced
-        })
-    }
-}
-
-impl<T: Eq + Hash> HybridSet<T> {
-    pub fn contains(&self, val: &T) -> bool {
-        self.lookup.contains(val) // O(1)
-    }
-}
-
-impl<T> HybridSet<T> {
-    pub fn iter(&self) -> HybridIter<'_, T> {
-        HybridIter {
-            inner: self.ordered.iter(),
-            reversed: self.reversed,
-        }
-    }
-
-    pub fn new(reversed: bool) -> Self {
-        Self {
-            reversed,
-            ..Default::default()
-        }
-    }
-}
-
-impl<'a, T> IntoIterator for &'a HybridSet<T> {
-    type Item = &'a T;
-    type IntoIter = HybridIter<'a, T>;
-
-    fn into_iter(self) -> Self::IntoIter {
-        self.iter()
-    }
-}
-
-pub struct HybridIter<'a, T> {
-    inner: std::collections::btree_set::Iter<'a, T>,
-    reversed: bool,
-}
-
-impl<'a, T> Iterator for HybridIter<'a, T> {
-    type Item = &'a T;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        if self.reversed {
-            self.inner.next_back()
-        } else {
-            self.inner.next()
-        }
-    }
-}
-
 impl ThreadNode {
     pub fn new(parent: ParentState) -> Self {
         Self {