Implements variable usage, tweaks and fixes for variable assignment

src/Evaluator/EvaluationScope/EvaluationScope.hpp

@@ -9,12 +9,15 @@
 class EvaluationScope {
     unordered_map<int, EvalValue*>* _scriptScope;
     vector<unordered_map<int, EvalValue*>> _localScope;
+    int _currentScope;
 public:
     explicit EvaluationScope(unordered_map<int, EvalValue*>* scriptVariables, int deepestScope);
     ~EvaluationScope();
 
     void CreateVariable(int scope, int id, EvalValue* value);
     void SetVariable(int scope, int id, EvalValue* value);
+    void OuterScope();
+    void InnerScope();
     EvalValue* GetVariable(int scope, int id);
 };