feat: moving checksum to sources directory, update file structure.

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

7 files changed, 54 insertions, 32 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 66d9997..ddc301a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,11 +5,11 @@ project(ocl_fix)
 
 find_package(Boost REQUIRED core)
 
-add_library(ocl_fix src/fix/parser_impl.cpp)
+add_library(ocl_fix src/fix/parser.cpp src/fix/checksum.cpp)
 target_link_libraries(ocl_fix Boost::core)
 target_include_directories(ocl_fix PUBLIC ${BOOST_INCLUDE_DIRS})
 
-install(DIRECTORY include/ DESTINATION include)
+install(DIRECTORY include DESTINATION include)
 install(TARGETS ocl_fix DESTINATION lib)
 
 set_property(TARGET ocl_fix PROPERTY CXX_STANDARD 20)
diff --git a/example/fix_tag_example/CMakeLists.txt b/example/fix_tag_example/CMakeLists.txt
index 967ca07..ebf3e6f 100644
--- a/example/fix_tag_example/CMakeLists.txt
+++ b/example/fix_tag_example/CMakeLists.txt
@@ -13,4 +13,4 @@ target_include_directories(FixExample PUBLIC ${BOOST_INCLUDE_DIRS})
 
 set_property(TARGET FixExample PROPERTY CXX_STANDARD 20)
 target_include_directories(FixExample PUBLIC ../../include/ocl)
-target_link_libraries(FixExample PRIVATE ocl_fix.a)
+target_link_libraries(FixExample PUBLIC ocl_fix.a)
diff --git a/example/fix_tag_example/example.cpp b/example/fix_tag_example/example.cpp
index efd66f8..42b859f 100644
--- a/example/fix_tag_example/example.cpp
+++ b/example/fix_tag_example/example.cpp
@@ -45,7 +45,7 @@ int main(int argc, char** argv)
 	ocl::io::print(":value=", fix["49"], "\n");
 
 	ocl::io::print(":checksum=", ocl::fix::try_index_checksum(fix), "\n");
-	ocl::io::print(":checksum=", ocl::fix::operators::checksum(default_fix_unchecked), "\n");
+	//ocl::io::print(":checksum=", ocl::fix::operators::checksum(default_fix_unchecked), "\n");
 
 	return 0;
 }
diff --git a/include/ocl/fix/checksum.hpp b/include/ocl/fix/checksum.hpp
index 2672996..5d9fa8b 100644
--- a/include/ocl/fix/checksum.hpp
+++ b/include/ocl/fix/checksum.hpp
@@ -18,42 +18,20 @@ namespace ocl::fix
 	/// \brief Returns the checksum index of a FIX message.
 	/// \param range the range_buffer containing the message.
 	/// \throws runtime_error if the FIX message is invalid (missing tag "8").
-
-	inline std::string try_index_checksum(range_buffer& fix)
-	{
-		if (fix.is_valid())
-			return fix["10"];
-		else
-			::ocl::fix::detail::throw_runtime_error();
-
-		::ocl::fix::detail::unreachable();
-
-		return {};
-	}
+	std::string try_index_checksum(range_buffer& fix);
 
 	/// \brief FIX message operators namespace.
 	namespace operators
 	{
-        
+
 		using checksum_type = long long;
 
 		/// \brief Calculates the FIX protocol checksum for a message.
 		/// \param in_ Pointer to the message buffer.
 		/// \param len Length of the message in bytes.
 		/// \return The checksum value (sum of all bytes modulo 256).
-		constexpr inline checksum_type
-		checksum(const std::string_view& in_) noexcept
-		{
-			checksum_type cks{};
-
-			for (std::size_t idx{};
-				 idx < in_.size(); ++idx)
-				cks += static_cast<uint8_t>(in_[idx]);
-
-			// add \0
-			cks += 1;
-			return cks % 256;
-		}
+		checksum_type
+		checksum(const boost::string_view& in_) noexcept;
 
 	} // namespace operators
 
diff --git a/src/fix/checksum.cpp b/src/fix/checksum.cpp
new file mode 100644
index 0000000..e8e155f
--- /dev/null
+++ b/src/fix/checksum.cpp
@@ -0,0 +1,44 @@
+/*
+ * File: fix/checksum.cpp
+ * Purpose: Financial Information Exchange parser in C++
+ * Author: Amlal El Mahrouss (amlal@nekernel.org)
+ * Copyright 2026, Amlal El Mahrouss, licensed under the Boost Software License.
+ */
+
+#include <ocl/fix/checksum.hpp>
+
+namespace ocl::fix
+{
+
+	std::string try_index_checksum(range_buffer& fix)
+	{
+		if (fix.is_valid())
+			return fix["10"];
+		else
+			detail::throw_runtime_error();
+
+    detail::unreachable();
+
+		return {};
+	}
+
+	namespace operators
+	{
+
+		checksum_type
+		checksum(const boost::string_view& in_) noexcept
+		{
+			checksum_type cks{};
+
+			for (std::size_t idx{};
+				 idx < in_.size(); ++idx)
+				cks += static_cast<uint8_t>(in_[idx]);
+
+			// add \0
+			cks += 1;
+			return cks % 256;
+		}
+
+	} // namespace operators
+
+} // namespace ocl::fix
diff --git a/src/fix/parser_impl.cpp b/src/fix/parser.cpp
index 4db9873..d12056b 100644
--- a/src/fix/parser_impl.cpp
+++ b/src/fix/parser.cpp
@@ -1,5 +1,5 @@
 /*
- * File: fix/parser_impl.cpp
+ * File: fix/parser.cpp
  * Purpose: Financial Information Exchange parser in C++
  * Author: Amlal El Mahrouss (amlal@nekernel.org)
  * Copyright 2025-2026, Amlal El Mahrouss, licensed under the Boost Software License.
@@ -84,7 +84,7 @@ namespace ocl::fix
 	visitor::visitor()	= default;
 	visitor::~visitor() = default;
 
-	/// \brief Alias of visit.
+	/// @brief Alias of visit.
 	range_buffer visitor::operator()(const std::string& in)
 	{
 		return impl_->visit(in.data());
diff --git a/src/test/.keep b/src/test/.keep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/test/.keep