It seems to me that to use bison I have to have a BNF first. I'm reading Programming Language Pragmatics 3rd Ed (PLP3). What is not clear to me is that how to construct the BNF for a language? Based on my reading of PLP3, I haven't found a formal way to construct BNF. What I understand is that, to construct a BNF, I'll have to think about some examples written in the language and write the BNF based on my experience.
A language definition is usually evolving. It is not clear to me whether it always affects the BNF incrementally if the language is changed little by little. Please excuse me if my questions have been answered by some books or previous discussions. Could somebody let me know how to details the two issues? _______________________________________________ help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison
