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In the XML output, list useless and unused symbols and rules with the

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useful ones and add a "usefulness" attribute.  Discussed starting at
<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00017.html>.
* src/gram.c (grammar_rules_partial_print_xml): Remove.
(grammar_rules_print_xml): Print all rules instead of just those
useful in the grammar, and add a "usefulness" attribute.
* src/gram.h (grammar_rules_partial_print_xml): Remove prototype.
* src/print-xml.c (print_rules_useless_in_parser): Remove.
(print_grammar): Print all nonterminals instead of just useful ones,
and add a "usefulness" attribute to nonterminals and terminals.
(print_xml): Don't print a separate "reductions" or
"rules-useless-in-parser" element.
* src/reduce.c (reduce_output): Use reduce_token_unused_in_grammar.
(reduce_xml): Remove.
(reduce_token_unused_in_grammar): New.
(reduce_nonterminal_useless_in_grammar): New.
* src/reduce.h (reduce_xml): Remove prototype.
(reduce_token_unused_in_grammar): Add prototype.
(reduce_nonterminal_useless_in_grammar): Add prototype.
* data/xslt/xml2text.xsl: Update for XML changes.
* data/xslt/xml2xhtml.xsl: Update for XML changes.
* tests/reduce.at (Useless Terminals): Update output.
(Useless Rules): Update output.
(Reduced Automaton): Update output.

Say "Terminals unused in grammar" instead of "Unused terminals".
* NEWS (2.3a+): Update.
* doc/bison.texinfo (Understanding): Update example output.
* src/reduce.c (reduce_output): Implement.
* data/xslt/xml2text.xsl: Implement.
* data/xslt/xml2xhtml.xsl: Implement.
This commit is contained in:
Joel E. Denny
2007-11-24 19:41:25 +00:00
parent 1bb2bd75f0
commit d80fb37a26
11 changed files with 267 additions and 269 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
src/gram.c
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@@ -196,36 +196,6 @@ grammar_rules_partial_print (FILE *out, const char *title,
fputs ("\n\n", out);
}
void
grammar_rules_partial_print_xml (FILE *out, int level, bool rtag,
rule_filter filter)
{
rule_number r;
bool first = true;
for (r = 0; r < nrules + nuseless_productions; r++)
{
if (filter && !filter (&rules[r]))
continue;
if (rtag && first)
xml_puts (out, level + 1, "<rules>");
first = false;
xml_printf (out, level + 2, "<rule number=\"%d\">",
rules[r].number);
rule_lhs_print_xml (&rules[r], out, level + 3);
rule_rhs_print_xml (&rules[r], out, level + 3);
xml_puts (out, level + 2, "</rule>");
}
if (rtag)
{
if (!first)
xml_puts (out, level + 1, "</rules>");
else
xml_puts (out, level + 1, "<rules/>");
}
}
void
grammar_rules_print (FILE *out)
{
@@ -235,7 +205,33 @@ grammar_rules_print (FILE *out)
void
grammar_rules_print_xml (FILE *out, int level)
{
grammar_rules_partial_print_xml (out, level, true, rule_useful_in_grammar_p);
rule_number r;
bool first = true;
for (r = 0; r < nrules + nuseless_productions; r++)
{
if (first)
xml_puts (out, level + 1, "<rules>");
first = false;
{
char const *usefulness;
if (rule_useless_in_grammar_p (&rules[r]))
usefulness = "useless-in-grammar";
else if (rule_useless_in_parser_p (&rules[r]))
usefulness = "useless-in-parser";
else
usefulness = "useful";
xml_printf (out, level + 2, "<rule number=\"%d\" usefulness=\"%s\">",
rules[r].number, usefulness);
}
rule_lhs_print_xml (&rules[r], out, level + 3);
rule_rhs_print_xml (&rules[r], out, level + 3);
xml_puts (out, level + 2, "</rule>");
}
if (!first)
xml_puts (out, level + 1, "</rules>");
else
xml_puts (out, level + 1, "<rules/>");
}
void