--- /dev/null
+#ifndef ASTOPS_H
+#define ASTOPS_H
+
+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;
+
+enum BooleanValue {BV_UNDEFINED=0, BV_MUSTBETRUE=1, BV_MUSTBEFALSE=2, BV_UNSAT=3};
+typedef enum BooleanValue BooleanValue;
+
+#endif