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# File 'lib/antlr3/profile.rb', line 129
def generate_report
report = '+' << '-' * 78 << "+\n"
report << '| ' << "ANTLR Rule Profile".center( 76 ) << " |\n"
report << '+' << '-' * 78 << "+\n"
report << "| Generated at #{ Time.now }".ljust( 78 ) << " |\n"
report << "| Profiled #{ parser_class.name }##{ top_rule }".ljust( 78 ) << " |\n"
report << "| Rule source generated from grammar file #{ grammar_file }".ljust( 78 ) << " |\n"
report << '+' << '-' * 78 << "+\n"
report << '| ' << "Rule Invocations".center( 76 ) << " |\n"
report << '+' << '-' * 68 << '+' << '-' * 9 << "+\n"
report << "| %-66s | %7i |\n" % [ "Total Invocations", rule_invocations ]
report << "| %-66s | %7i |\n" % [ "``Guessing'' Invocations", guessing_rule_invocations ]
report << "| %-66s | %7i |\n" % [ "Deepest Level of Invocation", rule_invocation_depth ]
report << '+' << '-' * 68 << '+' << '-' * 9 << "+\n"
report << '| ' << "Execution Events".center( 76 ) << " |\n"
report << '+' << '-' * 68 << '+' << '-' * 9 << "+\n"
report << "| %-66s | %7i |\n" % [ "Semantic Predicates Evaluated", semantic_predicates ]
report << "| %-66s | %7i |\n" % [ "Syntactic Predicates Evaluated", syntactic_predicates ]
report << "| %-66s | %7i |\n" % [ "Errors Reported", reported_errors ]
report << '+' << '-' * 68 << '+' << '-' * 9 << "+\n"
report << '| ' << "Token and Character Data".center( 76 ) << " |\n"
report << '+' << '-' * 68 << '+' << '-' * 9 << "+\n"
report << "| %-66s | %7i |\n" % [ "Tokens Consumed", tokens ]
report << "| %-66s | %7i |\n" % [ "Hidden Tokens Consumed", hidden_tokens ]
report << "| %-66s | %7i |\n" % [ "Characters Matched", characters_matched ]
report << "| %-66s | %7i |\n" % [ "Hidden Characters Matched", hidden_characters_matched ]
report << '+' << '-' * 68 << '+' << '-' * 9 << "+\n"
report << '| ' << "Memoization".center( 76 ) << " |\n"
report << '+' << '-' * 68 << '+' << '-' * 9 << "+\n"
report << "| %-66s | %7i |\n" % [ "Cache Entries", memoization_cache_entries ]
report << "| %-66s | %7i |\n" % [ "Cache Hits", memoization_cache_hits ]
report << "| %-66s | %7i |\n" % [ "Cache Misses", memoization_cache_misses ]
report << '+' << '-' * 68 << '+' << '-' * 9 << "+\n"
[
[ 'Fixed Lookahead (k)', fixed_looks ],
[ 'Arbitrary Lookahead (k)', cyclic_looks ],
[ 'Backtracking (Syntactic Predicate)', syntactic_predicate_looks ]
].each do |name, set|
mean, stdev = '%4.2f' % set.average, '%4.2f' % set.standard_deviation
report << '| ' << "#{ name } Decisions".center( 76 ) << " |\n"
report << '+' << '-' * 68 << '+' << '-' * 9 << "+\n"
report << "| %-66s | %7i |\n" % [ "Count", set.length ]
report << "| %-66s | %7i |\n" % [ "Minimum k", set.min ]
report << "| %-66s | %7i |\n" % [ "Maximum k", set.max ]
report << "| %-66s | %7s |\n" % [ "Average k", mean ]
report << "| %-66s | %7s |\n" % [ "Standard Deviation of k", stdev ]
report << '+' << '-' * 68 << '+' << '-' * 9 << "+\n"
end
return( report )
end
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