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[Fixes #137] Improve reporting

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Marc-Andre Lafortune 2020-08-13 21:50:16 -04:00 • committed by Hiroshi SHIBATA
parent 3da3c2747f
commit 97d1a381e1
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4 changed files with 77 additions and 25 deletions
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39
libexec/racc
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@ -1,6 +1,6 @@
#!/usr/bin/env ruby
#
# $Id$
#
#
# Copyright (c) 1999-2006 Minero Aoki
#
@ -184,8 +184,12 @@ def main
log_useless states.grammar
log_conflict states
else
report_useless states.grammar
report_conflict states
has_useless = report_useless states.grammar
has_conflicts = report_conflict states
if has_useless || has_conflicts
preamble = make_logfile ? 'C' : 'Turn on logging with "-v" and c'
$stderr.puts %Q{#{preamble}heck ".output" file for details}
end
end
profiler.report
@ -201,13 +205,29 @@ def make_filename(path, suffix)
path.sub(/(?:\..*?)?\z/, suffix)
end
LIST_LIMIT = 10
def report_list(enum, label)
c = enum.count
if c > 0
$stderr.puts "#{c} #{label}:"
enum.first(LIST_LIMIT).each do |item|
$stderr.puts " #{yield item}"
end
$stderr.puts " ..." if c > LIST_LIMIT
end
end
# @return [Boolean] if anything was reported
def report_conflict(states)
if states.should_report_srconflict?
reported = true
$stderr.puts "#{states.n_srconflicts} shift/reduce conflicts"
end
if states.rrconflict_exist?
reported = true
$stderr.puts "#{states.n_rrconflicts} reduce/reduce conflicts"
end
reported
end
def log_conflict(states)
@ -222,16 +242,17 @@ def log_conflict(states)
}
end
# @return [Boolean] if anything was reported
def report_useless(grammar)
if grammar.useless_nonterminal_exist?
$stderr.puts "#{grammar.n_useless_nonterminals} useless nonterminals"
end
if grammar.useless_rule_exist?
$stderr.puts "#{grammar.n_useless_rules} useless rules"
end
reported = report_list(grammar.each_useless_nonterminal, 'useless nonterminals', &:to_s)
reported ||= report_list(grammar.each_useless_rule, 'useless rules') { |r| "##{r.ident} (#{r.target})" }
if grammar.start.useless?
$stderr.puts 'fatal: start symbol does not derive any sentence'
reported = true
end
reported
end
def log_useless(grammar)