From c9f97e7ac1178bd7fba5b0ccd59aa1256900f4c2 Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Thu, 11 Sep 2025 17:51:50 +0200
Subject: feat: libSystem: `Verify.h` include file, used to verify SCI's input
 and data.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>
---
 dev/libSystem/SystemKit/Verify.h | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 dev/libSystem/SystemKit/Verify.h

(limited to 'dev/libSystem/SystemKit')

diff --git a/dev/libSystem/SystemKit/Verify.h b/dev/libSystem/SystemKit/Verify.h
new file mode 100644
index 00000000..68e75d47
--- /dev/null
+++ b/dev/libSystem/SystemKit/Verify.h
@@ -0,0 +1,40 @@
+/* -------------------------------------------
+
+   Copyright (C) 2025, Amlal El Mahrouss, all rights reserved.
+
+   File: Verify.h
+   Purpose: System Call Interface Verification Layer.
+
+   ------------------------------------------- */
+
+#pragma once
+
+#include <libSystem/SystemKit/System.h>
+
+namespace LibSystem::Detail {
+/// @author 0xf00sec, and Amlal El Mahrouss
+/// @brief safe cast operator.
+template <typename T, typename R = VoidPtr>
+static R sys_safe_cast(const T* ptr) {
+  _rtl_assert(ptr, "safe cast failed!");
+  return static_cast<R>(const_cast<T*>(ptr));
+}
+
+template <typename T, typename U>
+struct must_cast_traits {
+  constexpr static BOOL value = false;
+};
+
+template <typename T>
+struct must_cast_traits<T, T> {
+  constexpr static BOOL value = true;
+};
+
+/// @author Amlal El Mahrouss
+/// @brief Safe constexpr cast.
+template <typename T, typename R>
+constexpr R* sys_constexpr_cast(T* ptr) {
+  static_assert(must_cast_traits<T, R>::value, "constexpr cast failed! types are a mismatch!");
+  return static_cast<R*>(ptr);
+}
+}  // namespace LibSystem::Detail
-- 
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