From d7a5cbfc95cc0574f6eafdb5e5c517b2bac41526 Mon Sep 17 00:00:00 2001
From: psucien <bad_cast@protonmail.com>
Date: Sat, 22 Jun 2024 19:04:42 +0200
Subject: [PATCH] common: slot_vector: added `is_allocated` to check if the
 slot already exists

---
 src/common/slot_vector.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/common/slot_vector.h b/src/common/slot_vector.h
index 06c057c2..fa3e899b 100644
--- a/src/common/slot_vector.h
+++ b/src/common/slot_vector.h
@@ -54,6 +54,13 @@ public:
         return values[id.index].object;
     }
 
+    bool is_allocated(SlotId id) const {
+        if (id && id.index / 64 < stored_bitset.size()) {
+            return ((stored_bitset[id.index / 64] >> (id.index % 64)) & 1) != 0;
+        }
+        return false;
+    }
+
     template <typename... Args>
     [[nodiscard]] SlotId insert(Args&&... args) noexcept {
         const u32 index = FreeValueIndex();