-// these are used for EVAL_OPERAND.operator
-#define EVAL_OPERATOR_NOP '\0'
-#define EVAL_OPERATOR_VALUE ':'
-#define EVAL_OPERATOR_EXPRESSION_OPEN '('
-#define EVAL_OPERATOR_EXPRESSION_CLOSE ')'
-#define EVAL_OPERATOR_NOT '!'
-#define EVAL_OPERATOR_PLUS '+'
-#define EVAL_OPERATOR_MINUS '-'
-#define EVAL_OPERATOR_AND '&'
-#define EVAL_OPERATOR_OR '|'
-#define EVAL_OPERATOR_GREATER_THAN_OR_EQUAL 'G'
-#define EVAL_OPERATOR_LESS_THAN_OR_EQUAL 'L'
-#define EVAL_OPERATOR_NOT_EQUAL '~'
-#define EVAL_OPERATOR_EQUAL '='
-#define EVAL_OPERATOR_LESS '<'
-#define EVAL_OPERATOR_GREATER '>'
-#define EVAL_OPERATOR_MULTIPLY '*'
-#define EVAL_OPERATOR_DIVIDE '/'
-#define EVAL_OPERATOR_SIGN_PLUS 'P'
-#define EVAL_OPERATOR_SIGN_MINUS 'M'
-
-#define EVAL_ERROR_OK 0