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POyacc shift/reduce conflict. It really serious complexity
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  1. POyacc shift/reduce conflict. It really serious complexity
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    copied!<p>I was trying many many time to solve this conflict.</p> <p>But I don't know why occur conflict here.</p> <p>2 conflicts occur at compliation time.</p> <p>yacc(bison) error goes:</p> <pre><code>State 314 conflicts: 1 shift/reduce State 315 conflicts: 1 shift/reduce state 314 7 c_complex_object_id: type_identifier . 8 | type_identifier . V_LOCAL_TERM_CODE_REF V_LOCAL_TERM_CODE_REF shift, and go to state 77 V_LOCAL_TERM_CODE_REF [reduce using rule 7 (c_complex_object_id)] $default reduce using rule 7 (c_complex_object_id) state 315 127 c_integer_spec: integer_value . 184 ordinal: integer_value . SYM_INTERVAL_DELIM V_QUALIFIED_TERM_CODE_REF 201 integer_list_value: integer_value . ',' integer_value 203 | integer_value . ',' SYM_LIST_CONTINUE SYM_INTERVAL_DELIM shift, and go to state 380 ',' shift, and go to state 200 SYM_INTERVAL_DELIM [reduce using rule 127 (c_integer_spec)] $default reduce using rule 127 (c_integer_spec) state 77 8 c_complex_object_id: type_identifier V_LOCAL_TERM_CODE_REF . $default reduce using rule 8 (c_complex_object_id) state 380 184 ordinal: integer_value SYM_INTERVAL_DELIM . V_QUALIFIED_TERM_CODE_REF V_QUALIFIED_TERM_CODE_REF shift, and go to state 422 state 200 201 integer_list_value: integer_value ',' . integer_value 203 | integer_value ',' . SYM_LIST_CONTINUE V_INTEGER shift, and go to state 2 SYM_LIST_CONTINUE shift, and go to state 276 '+' shift, and go to state 170 '-' shift, and go to state 171 integer_value go to state 277 ... </code></pre> <p>yacc source goes:</p> <pre><code>c_complex_object_id : type_identifier | type_identifier V_LOCAL_TERM_CODE_REF ; type_identifier : '(' V_TYPE_IDENTIFIER ')' | '(' V_GENERIC_TYPE_IDENTIFIER ')' | V_TYPE_IDENTIFIER | V_GENERIC_TYPE_IDENTIFIER ; c_integer_spec : integer_value | integer_list_value | integer_interval_value ; c_integer : c_integer_spec | c_integer_spec ';' integer_value | c_integer_spec ';' error ; ordinal : integer_value SYM_INTERVAL_DELIM V_QUALIFIED_TERM_CODE_REF ; integer_list_value : integer_value ',' integer_value | integer_value ',' SYM_LIST_CONTINUE ; integer_value : V_INTEGER | '+' V_INTEGER | '-' V_INTEGER ; </code></pre> <p>I have two problems above. What's wrong with it?</p>
 

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