X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/41d7a5f24d5e69bdf6ce10c012d50b89ce1e3957..ec94982becc67543aa05f67ea861f689f1e4ddd0:/src/gram.h

diff --git a/src/gram.h b/src/gram.h
index bf60e0a3..3f75dd8f 100644
--- a/src/gram.h
+++ b/src/gram.h
@@ -1,7 +1,7 @@
 /* Data definitions for internal representation of Bison's input.
 
-   Copyright (C) 1984, 1986, 1989, 1992, 2001, 2002, 2003, 2004, 2005, 2006
-   2007 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 1992, 2001-2007, 2009-2012 Free
+   Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -204,15 +204,17 @@ extern rule *rules;
 /* A function that selects a rule.  */
 typedef bool (*rule_filter) (rule *);
 
-/* Return true IFF the rule has a `number' smaller than NRULES.  */
-bool rule_useful_p (rule *r);
+/* Return true IFF the rule has a `number' smaller than NRULES.  That is, it is
+   useful in the grammar.  */
+bool rule_useful_in_grammar_p (rule *r);
 
-/* Return true IFF the rule has a `number' higher than NRULES.  */
-bool rule_useless_p (rule *r);
+/* Return true IFF the rule has a `number' higher than NRULES.  That is, it is
+   useless in the grammar.  */
+bool rule_useless_in_grammar_p (rule *r);
 
-/* Return true IFF the rule is not flagged as useful *and* is useful.
-   In other words, it was discarded because of conflicts.  */
-bool rule_never_reduced_p (rule *r);
+/* Return true IFF the rule is not flagged as useful but is useful in the
+   grammar.  In other words, it was discarded because of conflicts.  */
+bool rule_useless_in_parser_p (rule *r);
 
 /* Print this rule's number and lhs on OUT.  If a PREVIOUS_LHS was
    already displayed (by a previous call for another rule), avoid
@@ -249,25 +251,23 @@ void ritem_print (FILE *out);
 /* Return the size of the longest rule RHS.  */
 size_t ritem_longest_rhs (void);
 
-/* Print the grammar's rules numbers from BEGIN (inclusive) to END
-   (exclusive) on OUT under TITLE.  */
+/* Print the grammar's rules that match FILTER on OUT under TITLE.  */
 void grammar_rules_partial_print (FILE *out, const char *title,
 				  rule_filter filter);
-void grammar_rules_partial_print_xml (FILE *out, int level, bool rtag,
-				      rule_filter filter);
 
-/* Print the grammar's rules on OUT.  */
+/* Print the grammar's useful rules on OUT.  */
 void grammar_rules_print (FILE *out);
+/* Print all of the grammar's rules with a "usefulness" attribute.  */
 void grammar_rules_print_xml (FILE *out, int level);
 
 /* Dump the grammar. */
 void grammar_dump (FILE *out, const char *title);
 
 /* Report on STDERR the rules that are not flagged USEFUL, using the
-   MESSAGE (which can be `useless rule' when invoked after grammar
-   reduction, or `never reduced' after conflicts were taken into
-   account).  */
-void grammar_rules_never_reduced_report (const char *message);
+   MESSAGE (which can be `rule useless in grammar' when invoked after grammar
+   reduction, or `rule useless in parser due to conflicts' after conflicts
+   were taken into account).  */
+void grammar_rules_useless_report (const char *message);
 
 /* Free the packed grammar. */
 void grammar_free (void);