Suggestion: enumerating non-terminals

[Tony Li]

Hi,

I have a small proposal that I'd like to float.

In building a parse tree for a complex language, it's very helpful to  
identify which nodes correspond to which productions in the grammar.   
Bison already has internal identifiers for each non-terminal and  
carries around ASCII strings for each in yytname[].  What I'd dearly  
love to see is the ability (probably as an option) to export these  
symbols into y.tab.h, preferably as part of an enum.

It's possible to generate this by hand, but as it's not automatically  
maintained today, any significant change in the grammar requires a  
manual update of the symbols.  This is Not Fun.

Comments?  Suggestions?

Tony