Sorry, I am a rookie here...Could you explain more thoroughly?
On Tue, May 12, 2009 at 4:32 PM, Hans Aberg <[email protected]> wrote:
> On 12 May 2009, at 09:06, Yinpeng Li wrote:
>
> %left OR
>> %left AND
>> ............................
>> %%
>> ............................
>> predicate: predicate OR predicate {
>> $$ = new AST_PredicateTreeNode($1, $3,
>> AST_PredicateTreeNode::OR) ;
>> REGISTER_AST_NODE($$) ;
>> }
>> | predicate AND predicate {
>> $$ = new AST_PredicateTreeNode($1, $3,
>> AST_PredicateTreeNode::AND) ;
>> REGISTER_AST_NODE($$) ;
>> }
>> | LEFT_PARENTHESIS predicate RIGHT_PARENTHESIS {
>> $$ = $2 ;
>> }
>> ;
>>
>> THE ERROR REPORT:
>> state 54
>>
>> 17 predicate: predicate . OR predicate [END_OF_COMMAND,
>> RIGHT_PARENTHESIS, OR]
>> 17 | predicate OR predicate . [END_OF_COMMAND,
>> RIGHT_PARENTHESIS, OR]
>> 18 | predicate . AND predicate
>>
>> AND shift, and go to state 40
>>
>> $default reduce using rule 17 (predicate)
>>
>> Conflict between rule 17 and token OR resolved as reduce (%left OR).
>> Conflict between rule 17 and token AND resolved as shift (OR < AND).
>> _______________________________________________
>> [email protected] http://lists.gnu.org/mailman/listinfo/help-bison
>>
>
>
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