gppg

问题 I'm having a problem understanding the shift/reduce confict for a grammar that I know has no ambiguity. The case is one of the if else type but it's not the 'dangling else' problem since I have mandatory END clauses delimiting code blocks. Here is the grammar for gppg (Its a Bison like compiler compiler ... and that was not an echo): %output=program.cs %start program %token FOR %token END %token THINGS %token WHILE %token SET %token IF %token ELSEIF %token ELSE %% program : statements ;