On Wed, 10 Apr 2002, Neil Conway wrote: > Hi all, > > I'm working on a fairly large patch (cleaning up Karel Zak's > PREPARE/EXECUTE work), and I'm having some problems with bison (I'm > a yacc newbie). In fact, my grammar currently has an obscene > 20 shift/reduce and 4 reduce/reduce conflicts!
Your first set of problems is coming from PrepareStmt: --- PrepareStmt: PREPARE name AS prepare_query types_prepare_clause prepare_store --- There is a reasonably clear problem here. prepare_query encompasses much of the grammar of the parser so it will definately cause shift/reduce and reduce/reduce conflicts with the other two productions which follow it. Easy solution? PrepareStmt: PREPARE name types_prepare_clause prepare_store AS prepare_query Your second problem is in ExecuteStmt: ExecuteStmt: EXECUTE name into_clause USING execute_using prepare_store Here your problem is with execute_using and prepare_store. I am not sure why. Gavin ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
