From fa20f1839448f9d5c7ccb9dcbabeb6d0785f6083 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Wed, 26 Mar 2025 23:28:02 +0100
Subject: feat: add get_field function

---
 src/util.rs | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 src/util.rs

(limited to 'src/util.rs')

diff --git a/src/util.rs b/src/util.rs
new file mode 100644
index 0000000..6b7180a
--- /dev/null
+++ b/src/util.rs
@@ -0,0 +1,31 @@
+use std::mem::MaybeUninit;
+
+pub trait MaybeUninitByteSlice
+{
+    unsafe fn cast<Item: 'static>(&self) -> &[Item];
+}
+
+impl MaybeUninitByteSlice for &[MaybeUninit<u8>]
+{
+    unsafe fn cast<Item: 'static>(&self) -> &[Item]
+    {
+        assert_eq!(self.len() % size_of::<Item>(), 0, "Invalid item size");
+
+        assert_eq!(
+            self.as_ptr().addr() % align_of::<Item>(),
+            0,
+            "Invalid item alignment"
+        );
+
+        if size_of::<Item>() == 0 {
+            return &[];
+        }
+
+        unsafe {
+            std::slice::from_raw_parts(
+                self.as_ptr().cast::<Item>(),
+                self.len() / size_of::<Item>(),
+            )
+        }
+    }
+}
-- 
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