From e7a9420443b204c154731b5c86167d09023612cf Mon Sep 17 00:00:00 2001
From: Boxy <supbscripter@gmail.com>
Date: Sat, 19 Mar 2022 04:14:27 +0000
Subject: [PATCH] Change `Cow<[ComponentId]>` to `Box<[ComponentId]>` (#4185)

`Cow::Borrowed` was never used
---
 crates/bevy_ecs/src/archetype.rs | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/crates/bevy_ecs/src/archetype.rs b/crates/bevy_ecs/src/archetype.rs
index cb5cfba3ab..ab33119a93 100644
--- a/crates/bevy_ecs/src/archetype.rs
+++ b/crates/bevy_ecs/src/archetype.rs
@@ -8,7 +8,6 @@ use crate::{
     storage::{Column, SparseArray, SparseSet, SparseSetIndex, TableId},
 };
 use std::{
-    borrow::Cow,
     collections::HashMap,
     hash::Hash,
     ops::{Index, IndexMut},
@@ -121,8 +120,8 @@ pub struct Archetype {
     entities: Vec<Entity>,
     edges: Edges,
     table_info: TableInfo,
-    table_components: Cow<'static, [ComponentId]>,
-    sparse_set_components: Cow<'static, [ComponentId]>,
+    table_components: Box<[ComponentId]>,
+    sparse_set_components: Box<[ComponentId]>,
     pub(crate) unique_components: SparseSet<ComponentId, Column>,
     pub(crate) components: SparseSet<ComponentId, ArchetypeComponentInfo>,
 }
@@ -131,8 +130,8 @@ impl Archetype {
     pub fn new(
         id: ArchetypeId,
         table_id: TableId,
-        table_components: Cow<'static, [ComponentId]>,
-        sparse_set_components: Cow<'static, [ComponentId]>,
+        table_components: Box<[ComponentId]>,
+        sparse_set_components: Box<[ComponentId]>,
         table_archetype_components: Vec<ArchetypeComponentId>,
         sparse_set_archetype_components: Vec<ArchetypeComponentId>,
     ) -> Self {
@@ -331,8 +330,8 @@ impl ArchetypeGeneration {
 
 #[derive(Hash, PartialEq, Eq)]
 pub struct ArchetypeIdentity {
-    table_components: Cow<'static, [ComponentId]>,
-    sparse_set_components: Cow<'static, [ComponentId]>,
+    table_components: Box<[ComponentId]>,
+    sparse_set_components: Box<[ComponentId]>,
 }
 
 #[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
@@ -381,8 +380,8 @@ impl Default for Archetypes {
         archetypes.archetypes.push(Archetype::new(
             ArchetypeId::RESOURCE,
             TableId::empty(),
-            Cow::Owned(Vec::new()),
-            Cow::Owned(Vec::new()),
+            Box::new([]),
+            Box::new([]),
             Vec::new(),
             Vec::new(),
         ));
@@ -477,8 +476,8 @@ impl Archetypes {
         table_components: Vec<ComponentId>,
         sparse_set_components: Vec<ComponentId>,
     ) -> ArchetypeId {
-        let table_components = Cow::from(table_components);
-        let sparse_set_components = Cow::from(sparse_set_components);
+        let table_components = table_components.into_boxed_slice();
+        let sparse_set_components = sparse_set_components.into_boxed_slice();
         let archetype_identity = ArchetypeIdentity {
             sparse_set_components: sparse_set_components.clone(),
             table_components: table_components.clone(),