diff --git a/eci/Type.h b/eci/Type.h
index 4939677..524f512 100644
--- a/eci/Type.h
+++ b/eci/Type.h
@@ -12,17 +12,50 @@
 #include <etk/types.h>
 
 namespace eci {
-	class Type {
+	class Type : public std::enable_shared_from_this<Type> {
 		protected:
-			std::string m_signature;
+			std::string m_signature; // !!! <== specific au language ...
 		public:
 			Type() {};
 			~Type() {};
+			virtual std::shared_ptr<eci::Variable> operator(const std::shared_ptr<eci::Variable>& _this,
+			                                                const std::string& _operatorName,
+			                                                const std::shared_ptr<eci::Variable>& _obj) {
+				ECI_ERROR("call unknow operator : '" << _operatorName << "'");
+				return nullptr;
+			}
+			virtual std::vector<std::shared_ptr<eci::Variable>> call(const std::shared_ptr<eci::Variable>& _this,
+			                                                         const std::string& _name,
+			                                                         const std::vector<std::shared_ptr<eci::Variable>>& _objList) {
+				ECI_ERROR("call unknow function : '" << _name << "' with _input.size()=" << _objList.size());
+				return std::vector<std::shared_ptr<eci::Variable>>();
+			};
+			virtual std::shared_ptr<eci::Variable> getVariable(std::shared_ptr<eci::Variable> _this,
+			                                                   const std::string& _name) {
+				ECI_ERROR("try get unknow Variable : '" << _name << "'");
+				return nullptr;
+			};
+			virtual std::shared_ptr<eci::Variable> create(const std::vector<std::shared_ptr<eci::Variable>>& _obj);
+			virtual std::shared_ptr<eci::Variable> clone(const std::vector<std::shared_ptr<eci::Variable>>& _obj);
 	};
-	template<typename T> class TypeBase {
+	class TypeNatif : public Type {
+		protected:
+			// name , opertor * / += / ++ ...
+			std::map<std::string, std::function<std::shared_ptr<eci::Variable>, std::shared_ptr<eci::Variable> _variable>> m_operatorList;
+			// name , function to call
+			std::map<std::string, std::function<std::vector<std::shared_ptr<eci::Variable>>, std::vector<std::shared_ptr<eci::Variable>> _variable>> m_functionList;
+			//
+			
 		
 	};
 	
+	template<typename T> class TypeBase : public Type {
+		
+	};
+	
+	template<> class TypeBase<int32_t> {
+		
+	}
 }
 
 #endif
\ No newline at end of file
diff --git a/eci/Variable.h b/eci/Variable.h
index da4968c..41c2ab4 100644
--- a/eci/Variable.h
+++ b/eci/Variable.h
@@ -15,7 +15,7 @@
 
 
 namespace eci {
-	class Variable {
+	class Variable : public std::enable_shared_from_this<Variable> {
 		public:
 			Variable();
 			~Variable();
@@ -23,7 +23,7 @@ namespace eci {
 			enum eci::visibility m_visibility;
 			bool m_const;
 			std::string m_name;
-			eci::Type m_type;
+			std::shared_ptr<eci::Type> m_type;
 	};
 }