feat: fix/fix.inl: introduce ocl/fix.inl header.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

6 files changed, 95 insertions, 6 deletions

diff --git a/include/ocl/fix.hpp b/include/ocl/fix.hpp
index 856623d..dcd9c41 100644
--- a/include/ocl/fix.hpp
+++ b/include/ocl/fix.hpp
@@ -2,7 +2,7 @@
  * File: fix.hpp
  * Purpose: Financial Information Exchange function and headers in C++
  * Author: Amlal El Mahrouss (amlal@nekernel.org)
- * Copyright 2025, Amlal El Mahrouss, licensed under the Boost Software License.
+ * Copyright 2025-2026, Amlal El Mahrouss, licensed under the Boost Software License.
  */
 
 #ifndef OCL_FIX_HPP
@@ -29,4 +29,6 @@ namespace ocl::fix
 
 } // namespace ocl::fix
 
+#include <ocl/fix/fix.inl>
+
 #endif
diff --git a/include/ocl/fix.inl b/include/ocl/fix.inl
new file mode 100644
index 0000000..44e5c1b
--- /dev/null
+++ b/include/ocl/fix.inl
@@ -0,0 +1,84 @@
+// Copyright 2025-2026, Amlal El Mahrouss (amlal@nekernel.org)
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+// Official repository: https://github.com/ocl-org/fix
+
+#ifndef OCL_FIX_FIX_INL
+#define OCL_FIX_FIX_INL
+
+namespace ocl::fix
+{
+
+	template <typename It, class Pred>
+	Pred find(It begin, It end, Pred pred)
+	{
+		for (auto it = begin; it != end; ++it)
+		{
+			if (*it == pred)
+			{
+				return *it;
+			}
+		}
+
+		return end;
+	}
+
+	template <typename It, class Pred>
+	Pred find_if(It begin, It end, Pred pred)
+	{
+		for (auto it = begin; it != end; ++it)
+		{
+			if (pred(it))
+			{
+				return *it;
+			}
+		}
+
+		return end;
+	}
+
+	template <typename It, class Pred>
+	typename Pred::size_type erase(It begin, It end, Pred pred)
+	{
+		typename Pred::size_type count{};
+
+		for (auto it = begin; it != end;)
+		{
+			if (*it == pred)
+			{
+				it = begin.erase(it);
+				++count;
+			}
+			else
+			{
+				++it;
+			}
+		}
+
+		return count;
+	}
+
+	template <typename It, class Pred>
+	typename Pred::size_type erase_if(It begin, It end, Pred)
+	{
+		typename Pred::size_type count{};
+
+		for (auto it = begin; it != end;)
+		{
+			if (pred(it))
+			{
+				it = begin.erase(it);
+				++count;
+			}
+			else
+			{
+				++it;
+			}
+		}
+
+		return count;
+	}
+
+} // namespace ocl::fix
+
+#endif
diff --git a/include/ocl/fix/checksum.hpp b/include/ocl/fix/checksum.hpp
index e1ed745..2672996 100644
--- a/include/ocl/fix/checksum.hpp
+++ b/include/ocl/fix/checksum.hpp
@@ -2,7 +2,7 @@
  * File: fix/checksum.hpp
  * Purpose: Financial Information Exchange checksum in C++
  * Author: Amlal El Mahrouss (amlal@nekernel.org)
- * Copyright 2025, Amlal El Mahrouss, licensed under the Boost Software License.
+ * Copyright 2025-2026, Amlal El Mahrouss, licensed under the Boost Software License.
  */
 
 #ifndef OCL_FIX_CHECKSUM
@@ -34,6 +34,7 @@ namespace ocl::fix
 	/// \brief FIX message operators namespace.
 	namespace operators
 	{
+        
 		using checksum_type = long long;
 
 		/// \brief Calculates the FIX protocol checksum for a message.
@@ -53,6 +54,7 @@ namespace ocl::fix
 			cks += 1;
 			return cks % 256;
 		}
+
 	} // namespace operators
 
 } // namespace ocl::fix
diff --git a/include/ocl/fix/detail/config.hpp b/include/ocl/fix/detail/config.hpp
index 582f349..a6e6fb9 100644
--- a/include/ocl/fix/detail/config.hpp
+++ b/include/ocl/fix/detail/config.hpp
@@ -2,7 +2,7 @@
  * File: detail/config.hpp
  * Purpose: Config file of the OCL.FIX library.
  * Author: Amlal El Mahrouss (amlal@nekernel.org)
- * Copyright 2025, Amlal El Mahrouss, licensed under the Boost Software License.
+ * Copyright 2025-2026, Amlal El Mahrouss, licensed under the Boost Software License.
  */
 
 #ifndef OCL_FIX_CONFIG
diff --git a/include/ocl/fix/parser.hpp b/include/ocl/fix/parser.hpp
index 560ecb9..086b6a7 100644
--- a/include/ocl/fix/parser.hpp
+++ b/include/ocl/fix/parser.hpp
@@ -2,7 +2,7 @@
  * File: fix/parser.hpp
  * Purpose: Financial Information Exchange parser in C++
  * Author: Amlal El Mahrouss (amlal@nekernel.org)
- * Copyright 2025, Amlal El Mahrouss, licensed under the Boost Software License.
+ * Copyright 2025-2026, Amlal El Mahrouss, licensed under the Boost Software License.
  */
 
 // Copyright 2025-2026, Amlal El Mahrouss (amlal@nekernel.org)
@@ -123,7 +123,7 @@ namespace ocl::fix
 		visitor();
 		~visitor();
 
-		/// \brief Alias of visit.
+		/// @brief Alias of visit.
 		range_buffer operator()(const std::string& in);
 
 		/// @brief Visits a FIX message and parse it into a range_buffer object.
diff --git a/src/fix/parser_impl.cpp b/src/fix/parser_impl.cpp
index 11333fd..4db9873 100644
--- a/src/fix/parser_impl.cpp
+++ b/src/fix/parser_impl.cpp
@@ -2,11 +2,12 @@
  * File: fix/parser_impl.cpp
  * Purpose: Financial Information Exchange parser in C++
  * Author: Amlal El Mahrouss (amlal@nekernel.org)
- * Copyright 2025, Amlal El Mahrouss, licensed under the Boost Software License.
+ * Copyright 2025-2026, Amlal El Mahrouss, licensed under the Boost Software License.
  */
 
 #define OCL_FIX_HAS_IMPL
 #include <ocl/fix/parser.hpp>
+#include <boost/algorithm/cxx11/is_sorted.hpp>
 
 namespace ocl::fix
 {