From 3b6a7e8c87f94391f92b55f20b9ba3e560ef280e Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Tue, 7 Oct 2025 09:24:56 +0200
Subject: feat: kernel & libSystem: improvements and tweaks. feat: docs: wip
 design of Launch.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>
---
 dev/kernel/NeKit/ErrorOr.h |  2 +-
 dev/kernel/NeKit/Pair.h    | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)

(limited to 'dev/kernel/NeKit')

diff --git a/dev/kernel/NeKit/ErrorOr.h b/dev/kernel/NeKit/ErrorOr.h
index 09f0cad5..3351c65d 100644
--- a/dev/kernel/NeKit/ErrorOr.h
+++ b/dev/kernel/NeKit/ErrorOr.h
@@ -50,7 +50,7 @@ class ErrorOr final {
 
  private:
   Ref<T> mRef;
-  ErrorT  mId{0};
+  ErrorT mId{0};
 };
 
 using ErrorOrAny = ErrorOr<voidPtr>;
diff --git a/dev/kernel/NeKit/Pair.h b/dev/kernel/NeKit/Pair.h
index aeeeb8a2..61668f5a 100644
--- a/dev/kernel/NeKit/Pair.h
+++ b/dev/kernel/NeKit/Pair.h
@@ -6,8 +6,46 @@
 
 #pragma once
 
+#include <CompilerKit/CompilerKit.h>
 #include <NeKit/Defines.h>
+#include <NeKit/ErrorOr.h>
 
 namespace Kernel {
+template <typename T1, typename T2>
 class Pair;
+
+class PairBuilder;
+
+template <typename T1, typename T2>
+class Pair final {
+  T1 fFirst{nullptr};
+  T2 fSecond{nullptr};
+
+  friend PairBuilder;
+
+ public:
+  explicit Pair() = default;
+  ~Pair()         = default;
+
+  NE_COPY_DEFAULT(Pair)
+
+  T1& First() { return fFirst; }
+  T2& Second() { return fSecond; }
+
+  const T1& First() const { return *fFirst; }
+  const T2& Second() const { return *fSecond; }
+
+ private:
+  Pair(T1 first, T2 second) : fFirst(first), fSecond(second) {}
+};
+
+class PairBuilder final {
+  template <typename T1, typename T2>
+  STATIC Pair<T1, T2> Construct(T1 first, T2 second) {
+    return Pair(first, second);
+  }
+};
+
+template <typename T1, typename T2>
+using PairOr = ErrorOr<Pair<T1, T2>>;
 }  // namespace Kernel
-- 
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