From e12b1f4459aee80ee333e90e3b56a3b09f81ae3e Mon Sep 17 00:00:00 2001
From: superwhiskers <whiskerdev@protonmail.com>
Date: Mon, 15 Sep 2025 13:38:14 -0500
Subject: node topological sorting

Change-Id: I6a6a6964255d818be1bf9a8f4ec9e317befa19c5
---
 crates/core/src/hive/group.rs | 122 ------------------------------------------
 1 file changed, 122 deletions(-)
 delete mode 100644 crates/core/src/hive/group.rs

(limited to 'crates/core/src/hive/group.rs')

diff --git a/crates/core/src/hive/group.rs b/crates/core/src/hive/group.rs
deleted file mode 100644
index 9217897..0000000
--- a/crates/core/src/hive/group.rs
+++ /dev/null
@@ -1,122 +0,0 @@
-//! An implementation of the individual memory blocks that make up a hive.
-
-use core::{
-    mem::{self, ManuallyDrop},
-    ptr::NonNull,
-};
-
-use crate::hive::skipfield;
-
-/// A type that may be either part of the free list or an element.
-pub union Slot<T, Sk>
-where
-    Sk: skipfield::SkipfieldType,
-{
-    /// An element of the [`Group`].
-    element: ManuallyDrop<T>,
-
-    /// A free list index.
-    free_list: FreeList<Sk>,
-}
-
-/// The contents of a free list index.
-///
-/// This uses the `packed` C representation to avoid any excess space. This is
-/// not a problem in the general case as our type will only ever be `u16` or
-/// `u8` unless an end-user overrides the skipfield type with a custom
-/// implementation.
-#[repr(C, packed)]
-#[derive(Copy, Clone)]
-#[cfg_attr(feature = "core-fmt", derive(Debug))]
-pub struct FreeList<Sk>
-where
-    Sk: skipfield::SkipfieldType,
-{
-    /// Index of the previous element in the free list.
-    pub previous: Sk,
-
-    /// Index of the next element in the free list.
-    pub next: Sk,
-}
-
-/// A doubly-linked `Group` of `T` with a skipfield type of `Sk`.
-#[cfg_attr(feature = "core-fmt", derive(Debug))]
-pub struct Group<T, Sk>
-where
-    Sk: skipfield::SkipfieldType,
-{
-    /// Pointer to the start of the skipfield.
-    pub skipfield: Option<NonNull<Sk>>,
-
-    /// Pointer to the next [`Group`].
-    pub next: Option<NonNull<Group<T, Sk>>>,
-
-    /// Pointer to element storage.
-    pub elements: Option<NonNull<Slot<T, Sk>>>,
-
-    /// Pointer to the previous [`Group`].
-    pub previous: Option<NonNull<Group<T, Sk>>>,
-
-    /// Index of the last erased element in the group.
-    ///
-    /// The last erased element contains the index of the next, and so on. If
-    /// this is equal to the maximum value of the underlying integer type,
-    /// then the free list is considered to be empty.
-    pub free_list_head: Sk,
-
-    /// Total number of elements this [`Group`] can hold.
-    pub capacity: Sk,
-
-    /// Number of elements stored in this [`Group`].
-    pub size: Sk,
-
-    /// Pointer to the next [`Group`] with erased elements.
-    pub next_with_erasures: Option<NonNull<Group<T, Sk>>>,
-
-    /// Pointer to the previous [`Group`] with erased elements.
-    pub previous_with_erasures: Option<NonNull<Group<T, Sk>>>,
-
-    /// Number assigned to this group.
-    pub number: usize,
-}
-
-impl<T, Sk> Group<T, Sk>
-where
-    Sk: skipfield::SkipfieldType,
-{
-    /// Size of each individual element within a [`Group`]
-    pub const ELEMENT_ALLOCATION_SIZE: usize =
-        compute_element_allocation_size::<T, Sk>();
-}
-
-/// Helper function which computes the allocation size of elements
-const fn compute_element_allocation_size<T, Sk>() -> usize {
-    let t_align = mem::align_of::<T>();
-    let t_size = mem::size_of::<T>();
-    let sk2_size = mem::size_of::<Sk>() * 2;
-    if t_align > t_size {
-        if sk2_size > t_align {
-            sk2_size
-        } else {
-            t_align
-        }
-    } else if sk2_size > t_size {
-        sk2_size
-    } else {
-        t_size
-    }
-}
-
-#[cfg(all(test, feature = "core-error"))]
-mod test {
-    use super::*;
-
-    #[test]
-    fn validate_element_allocation_size() {
-        assert_eq!(
-            Group::<u32, u8>::ELEMENT_ALLOCATION_SIZE,
-            4,
-            "element allocation size with T = u32, Sk = u8 is 4"
-        );
-    }
-}
-- 
cgit 1.4.1-2-gfad0