Precommit (#1)

* first commit

* cleanup

sdv_executables/sdv_idl_compiler/entities/hash_calc.h

@@ -0,0 +1,52 @@
+#ifndef HASH_CALC_H
+#define HASH_CALC_H
+
+#ifdef _MSC_VER
+    // Prevent warnings for XXHash during static code analysis.
+    #pragma warning(push)
+    #pragma warning(disable : 26812 26451)
+#endif
+
+#define XXH_INLINE_ALL
+#include <xxhash.h>
+
+#ifdef _MSC_VER
+    #pragma warning(pop)
+#endif
+
+#include <string>
+
+/**
+ * @brief Calculate a hash value
+ */
+class CHashObject
+{
+public:
+    /**
+     * @brief Constructor
+     */
+    CHashObject();
+
+    /**
+     * @brief Destructor
+     */
+    ~CHashObject();
+
+    /**
+     * @brief Shift operator adding a string to the hash.
+     * @param[in] rssString Reference to the string.
+     * @return 
+    */
+    CHashObject& operator<<(const std::string& rssString);
+
+    /**
+     * @brief Get the current hash value.
+     * @return The hash value.
+    */
+    uint64_t GetHash() const;
+
+private:
+    XXH64_state_t* m_state = nullptr;   ///< Hash state
+};
+
+#endif // !defined(HASH_CALC_H)