Parser report

If the command line option -r  is used, then in addition to generating the code for the grammar, the translator will also generate a comprehensive report of the grammar and the resulting LALR(1) automaton. The amount of details in this report can be varied using the the verbose option -v :

-v1

Print full information for all LR(0) states.

-v2

Also print out the lookahead set of a reduction rule. This may be useful for tracking down shift/reduce and reduce/reduce conflicts.

-v3

Do both -v1 and -v2.