GLR parsers sometimes raise parse errors instead of performing the

[bison.git] / ChangeLog

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+2002-10-13  Akim Demaille  <akim@epita.fr>
+
+       GLR parsers sometimes raise parse errors instead of performing the
+       default reduction.
+       Reported by Charles-Henry de Boysson.
+
+       * tests/calc.at (_AT_CHECK_CALC, _AT_CHECK_CALC_ERROR): Don't
+       check the length of the traces when %glr.
+       (_AT_CHECK_CALC_ERROR): Also skip `^Stack' lines, coming from
+       GLR's traces.
+       (AT_CHECK_CALC_LALR, AT_CHECK_CALC_GLR): New.
+       Test GLR parsers.
+       * data/glr.c (YYLEFTMOST_STATE): Fix its value.
+       (yyltype): Remove the yy prefix from the member names.
+       (yytable): Complete its comment.
+       (yygetLRActions): Map error action number from YYTABLE from
+       YYTABLE_NINF to 0.
+       (yyisErrorAction): No longer compare YYACTION to YYPACT_NINF
+       (which was a bug: it should have been YYTABEL_NINF, and yet it was
+       not satisfying as we could compare an YYACTION computed from
+       YYDEFACT to YYTABLE_NINF although they are unrelated): 0 is the
+       only value for error actions.
+       (yyreportParseError): In verbose parse error messages, don't issue
+       `error' in the list of expected tokens.
+       * data/yacc.c (yyparse) <yybackup>: Rewrite the decoding of the
+       next action to perform to match glr.c's decoding.
+       (yytable): Complete its comment.
+
 2002-10-13  Paul Eggert  <eggert@twinsun.com>
 
        Fix problem reported by Henrik Grubbstroem in