shift/reduce problem

[Fiordean Dacian]

 

Hi all,

 

I do have a problem with a shift/reduce on the following grammar:

 

...

 

single_loop_expr
    : single_loop_expr_head inline_expr_body loop_expr_end

    ;

 

single_loop_expr_head
    : KW_LOOP possible_loop_boundary KW_BEGIN        

                possible_inline_expr_identification end

    ;

 

inline_expr_body
    : instance_event_list
    ;

 

loop_expr_end
    : KW_LOOP KW_END end
    ;

 

possible_loop_boundary
                    : /* something here */

                    ;

 

possible_inline_expr_identification
                    : /* somtehing here */

                    ;

 

instance_event_list
     : instance_event
     | instance_event_list instance_event 
     ;

instance_event
    : orderable_event
    | non_orderable_event
    ;

 

orderable_event

                    : /* something here */

                    ;

 

non_ordorable_event

                    : /* something here */

                    ;

 

 

This generates 5 shift/reduce conflicts (maybe plus other productions which there are there), but my big problem is that the loop_expr_end is never reduced, for a correct input, in my opinion.

 

So, anybody has an idea on how I could rewrite (if that's the issue) this for the parsing process to work?

 

 

Thx,

 

D.