+typedef enum OverFlowBehavior OverFlowBehavior;
+
+enum UndefinedBehavior {IGNOREBEHAVIOR, FLAGFORCEUNDEFINED, UNDEFINEDSETSFLAG, FLAGIFFUNDEFINED};
+typedef enum UndefinedBehavior UndefinedBehavior;
+
+enum FunctionType {TABLEFUNC, OPERATORFUNC};
+typedef enum FunctionType FunctionType;
+
+enum PredicateType {TABLEPRED, OPERATORPRED};
+typedef enum PredicateType PredicateType;
+
+enum ASTNodeType {ORDERCONST, BOOLEANVAR, LOGICOP, PREDICATEOP, BOOLCONST, ELEMSET, ELEMFUNCRETURN, ELEMCONST};
+typedef enum ASTNodeType ASTNodeType;
+
+enum Polarity {P_UNDEFINED=0, P_TRUE=1, P_FALSE=2, P_BOTHTRUEFALSE=3};
+typedef enum Polarity Polarity;