From 803ca9c0bc4509e3be437afa7c3a041e4e9d881a Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Fri, 12 Dec 2025 21:46:27 +0100
Subject: chore: add the possibility of freestanding headers in `OCL.Core`.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>
---
 include/ocl/detail/config.hpp |  5 +++++
 include/ocl/io.hpp            | 40 ++++++++++++++++++++++++++++++++++++++++
 include/ocl/print.hpp         |  9 +++------
 include/ocl/smart_socket.hpp  |  3 +++
 include/ocl/tracked_ptr.hpp   |  4 +++-
 5 files changed, 54 insertions(+), 7 deletions(-)
 create mode 100644 include/ocl/io.hpp

(limited to 'include')

diff --git a/include/ocl/detail/config.hpp b/include/ocl/detail/config.hpp
index 3a85618..116c001 100644
--- a/include/ocl/detail/config.hpp
+++ b/include/ocl/detail/config.hpp
@@ -9,12 +9,15 @@
 #define __OCL_CORE_CONFIG
 
 #include <boost/config.hpp>
+
+#ifndef __OCL_FREESTANDING
 #include <boost/core/addressof.hpp>
 #include <boost/core/nvp.hpp>
 #include <boost/core/demangle.hpp>
 #include <boost/core/null_deleter.hpp>
 #include <boost/container/allocator.hpp>
 #include <boost/assert.hpp>
+#endif
 
 #define OCL_DEPRECATED()		[[deprecated]]
 #define OCL_DEPRECATED_MSG(MSG) [[deprecated(MSG)]]
@@ -38,8 +41,10 @@
 #endif
 
 #ifndef OCL_WINDOWS
+#ifndef __OCL_FREESTANDING
 #include <unistd.h>
 #endif
+#endif
 
 #if OCL_WANTS_PRAGMA_ONCE
 #define OCL_HAS_PRAGMA_ONCE 1
diff --git a/include/ocl/io.hpp b/include/ocl/io.hpp
new file mode 100644
index 0000000..c7599a5
--- /dev/null
+++ b/include/ocl/io.hpp
@@ -0,0 +1,40 @@
+/*
+ * File: print.hpp
+ * Purpose: OCL Print library
+ * Author: Amlal El Mahrouss. (amlal@nekernel.org)
+ * Copyright 2025, Amlal El Mahrouss, Licensed under the Boost Software License. Licensed under the BSL 1.0 license
+ */
+
+#ifndef __OCL_CORE_IO
+#define __OCL_CORE_IO
+
+#include <ocl/detail/config.hpp>
+
+#ifndef __OCL_FREESTANDING
+#define console_io_out std::cout
+#define console_io_in  std::cin
+
+#include <iostream>
+#else
+#define console_io_out ::ocl::io::null_cout
+#define console_io_in  ::ocl::io::null_cin
+
+#warning The OCL doesn't define IO streams in a freestanding host.
+
+namespace ocl::io
+{
+	class nullable_stream
+	{
+		nullable_stream()		   = default;
+		virtual ~nullable_stream() = default;
+
+        nullable_stream& operator<<(...) = delete;
+        nullable_stream& operator>>(...) = delete;
+	}
+
+	inline nullable_stream null_cout;
+	inline nullable_stream null_cin;
+} // namespace ocl::io
+
+#endif
+#endif
\ No newline at end of file
diff --git a/include/ocl/print.hpp b/include/ocl/print.hpp
index ea6b483..a667225 100644
--- a/include/ocl/print.hpp
+++ b/include/ocl/print.hpp
@@ -9,10 +9,7 @@
 #define __OCL_CORE_PRINT
 
 #include <ocl/detail/config.hpp>
-#include <iostream>
-
-#define console_io_out std::cout
-#define console_io_in  std::cin
+#include <ocl/io.hpp>
 
 namespace ocl::io
 {
@@ -24,8 +21,8 @@ namespace ocl::io
 
 	inline void print() noexcept
 	{
-        extern void lf() noexcept;
-        lf();
+		extern void lf() noexcept;
+		lf();
 	}
 
 	template <typename... Args>
diff --git a/include/ocl/smart_socket.hpp b/include/ocl/smart_socket.hpp
index 81094fd..ea9c73b 100644
--- a/include/ocl/smart_socket.hpp
+++ b/include/ocl/smart_socket.hpp
@@ -9,10 +9,13 @@
 #define __OCL_SMART_SOCKET
 
 #include <ocl/detail/config.hpp>
+
+#ifndef __OCL_FREESTANDING
 #include <boost/asio.hpp>
 
 #ifdef OCL_POSIX
 # include <ocl/posix/unique_socket.hpp>
 #endif
+#endif // !__OCL_FREESTANDING
 
 #endif // __OCL_SMART_SOCKET
\ No newline at end of file
diff --git a/include/ocl/tracked_ptr.hpp b/include/ocl/tracked_ptr.hpp
index 23ced29..03e1644 100644
--- a/include/ocl/tracked_ptr.hpp
+++ b/include/ocl/tracked_ptr.hpp
@@ -218,9 +218,11 @@ namespace ocl
 
 	namespace detail
 	{
+        using tracked_error = std::runtime_error;
+
 		inline void throw_tracked_error()
 		{
-			throw std::runtime_error("tracked_error: memory leak detected.");
+			throw tracked_error("tracked_error: memory leak detected.");
 		}
 	} // namespace detail
 
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