X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/f16b08196c780556cbf50691e2944960aebc46f6..45fdfd8108084c2c3505d584d8dcc7e534ae77a2:/src/gram.h diff --git a/src/gram.h b/src/gram.h index 78f0fe90..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 - 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. @@ -204,20 +204,23 @@ 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 useless repetitions. */ void rule_lhs_print (rule *r, symbol *previous_lhs, FILE *out); +void rule_lhs_print_xml (rule *r, FILE *out, int level); /* Return the length of the RHS. */ int rule_rhs_length (rule *r); @@ -248,22 +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); -/* 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);