Hi, Re-examining the Syntax Rules for the Boolean expressions I mentioned earlier, I updated the syntax rules as follows:
Expressions of the form: (!AvB)^(Cv!D) Syntax Rules: a) operand = identifier b) term = operand [ operator-->operand ... ] c) sub-expression = term [ operator-->term ... ] d) bracketed sub-expression = [ ! ... ] [ ( ... ] sub-expression [ ) ... ] e) expression = [ ! ... ] sub-expression [ operator-->sub-expression ... ] So, effectively, I will need five functions to implement the parser. Edward _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng