Rely on the state stack to display reduction traces.

[bison.git] / ChangeLog

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+2008-11-09  Akim Demaille  <demaille@gostai.com>
+
+       Rely on the state stack to display reduction traces.
+       To display rhs symbols before a reduction, we used information about the rule
+       reduced, which required the tables yyrhs and yyprhs.  Now use rely only on the
+       state stack to get the same information.
+       
+       * data/lalr1.cc (b4_rhs_data, b4_rhs_state): New.
+       Use them.
+       (parser::yyrhs_, parser::yyprhs_): Remove.
+       (parser::yy_reduce_print_): Use the state stack.
+
 2008-11-09  Akim Demaille  <demaille@gostai.com>
 
        Fuse yyval and yyloc into yylhs.