Implement %define lr.default_rules.

[bison.git] / ChangeLog

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+2009-04-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+       Implement %define lr.default_rules.
+       Its value describes the states that are permitted to contain
+       default rules: "all", "consistent", or "accepting".
+       * src/reader.c (reader): Default lr.default_rules to "all".
+       Check for a valid lr.default_rules value.
+       * src/lalr.c (state_lookahead_tokens_count): If lr.default_rules
+       is "accepting", then only mark the accepting state as
+       consistent.
+       (initialize_LA): Tell state_lookahead_tokens_count whether
+       lr.default_rules is "accepting".
+       * src/tables.c (action_row): If lr.default_rules is not "all",
+       then disable default rules in inconsistent states.
+       * src/print.c (print_reductions): Use this opportunity to
+       perform some assertions about whether lr.default_rules was
+       obeyed correctly.
+       * tests/local.at (AT_TEST_TABLES_AND_PARSE): New macro that
+       helps with checking the parser tables for a grammar.
+       * tests/input.at (%define lr.default_rules invalid values): New
+       test group.
+       * tests/reduce.at (AT_TEST_LR_DEFAULT_RULES): New macro using
+       AT_TEST_TABLES_AND_PARSE.
+       (`no %define lr.default_rules'): New test group generated by
+       AT_TEST_LR_DEFAULT_RULES.
+       (`%define lr.default_rules "all"'): Likewise.
+       (`%define lr.default_rules "consistent"'): Likewise.
+       (`%define lr.default_rules "accepting"'): Likewise.
+
 2009-04-20  Akim Demaille  <demaille@gostai.com>
 
        Formatting change.