зеркало из https://github.com/github/ruby.git
Removed executable of racc
This commit is contained in:
Hiroshi SHIBATA
Родитель
d24e514d54
Коммит
ab5aade5ab
320
libexec/racc
320
libexec/racc
|
|
@ -1,320 +0,0 @@
|
|||
#!/usr/bin/env ruby
|
||||
#
|
||||
#
|
||||
#
|
||||
# Copyright (c) 1999-2006 Minero Aoki
|
||||
#
|
||||
# This program is free software.
|
||||
# You can distribute/modify this program under the same terms of ruby.
|
||||
# see the file "COPYING".
|
||||
|
||||
require 'racc/static'
|
||||
require 'optparse'
|
||||
|
||||
def main
|
||||
output = nil
|
||||
debug_parser = false
|
||||
make_logfile = false
|
||||
logfilename = nil
|
||||
make_executable = false
|
||||
rubypath = nil
|
||||
embed_runtime = false
|
||||
debug_flags = Racc::DebugFlags.new
|
||||
line_convert = true
|
||||
line_convert_all = false
|
||||
omit_action_call = true
|
||||
superclass = nil
|
||||
check_only = false
|
||||
verbose = false
|
||||
profiler = RaccProfiler.new(false)
|
||||
|
||||
parser = OptionParser.new
|
||||
parser.banner = "Usage: #{File.basename($0)} [options] <input>"
|
||||
parser.on('-o', '--output-file=PATH',
|
||||
'output file name [<input>.tab.rb]') {|name|
|
||||
output = name
|
||||
}
|
||||
parser.on('-t', '--debug', 'Outputs debugging parser.') {|fl|
|
||||
debug_parser = fl
|
||||
}
|
||||
parser.on('-g', 'Equivalent to -t (obsolete).') {|fl|
|
||||
$stderr.puts "racc -g is obsolete. Use racc -t instead." if $VERBOSE
|
||||
debug_parser = fl
|
||||
}
|
||||
parser.on('-v', '--verbose',
|
||||
'Creates <filename>.output log file.') {|fl|
|
||||
make_logfile = fl
|
||||
}
|
||||
parser.on('-O', '--log-file=PATH',
|
||||
'Log file name [<input>.output]') {|path|
|
||||
make_logfile = true
|
||||
logfilename = path
|
||||
}
|
||||
parser.on('-e', '--executable [RUBYPATH]', 'Makes executable parser.') {|path|
|
||||
make_executable = true
|
||||
rubypath = (path == 'ruby' ? nil : path)
|
||||
}
|
||||
parser.on('-E', '--embedded', "Embeds Racc runtime in output.") {
|
||||
embed_runtime = true
|
||||
}
|
||||
parser.on('--line-convert-all', 'Converts line numbers of user codes.') {
|
||||
line_convert_all = true
|
||||
}
|
||||
parser.on('-l', '--no-line-convert', 'Never convert line numbers.') {
|
||||
line_convert = false
|
||||
line_convert_all = false
|
||||
}
|
||||
parser.on('-a', '--no-omit-actions', 'Never omit actions.') {
|
||||
omit_action_call = false
|
||||
}
|
||||
parser.on('--superclass=CLASSNAME',
|
||||
'Uses CLASSNAME instead of Racc::Parser.') {|name|
|
||||
superclass = name
|
||||
}
|
||||
parser.on('-C', '--check-only', 'Checks syntax and quit immediately.') {|fl|
|
||||
check_only = fl
|
||||
}
|
||||
parser.on('-S', '--output-status', 'Outputs internal status time to time.') {
|
||||
verbose = true
|
||||
}
|
||||
parser.on('-P', 'Enables generator profile') {
|
||||
profiler = RaccProfiler.new(true)
|
||||
}
|
||||
parser.on('-D flags', "Flags for Racc debugging (do not use).") {|flags|
|
||||
debug_flags = Racc::DebugFlags.parse_option_string(flags)
|
||||
}
|
||||
#parser.on('--no-extensions', 'Run Racc without any Ruby extension.') {
|
||||
# Racc.const_set :Racc_No_Extensions, true
|
||||
#}
|
||||
parser.on('--version', 'Prints version and quit.') {
|
||||
puts "racc version #{Racc::Version}"
|
||||
exit 0
|
||||
}
|
||||
parser.on('--runtime-version', 'Prints runtime version and quit.') {
|
||||
printf "racc runtime version %s; %s\n",
|
||||
Racc::Parser::Racc_Runtime_Version,
|
||||
if Racc::Parser.racc_runtime_type == 'ruby'
|
||||
sprintf('ruby core version %s',
|
||||
Racc::Parser::Racc_Runtime_Core_Version_R)
|
||||
else
|
||||
sprintf('c core version %s',
|
||||
Racc::Parser::Racc_Runtime_Core_Version_C)
|
||||
end
|
||||
exit 0
|
||||
}
|
||||
parser.on('--copyright', 'Prints copyright and quit.') {
|
||||
puts Racc::Copyright
|
||||
exit 0
|
||||
}
|
||||
parser.on('--help', 'Prints this message and quit.') {
|
||||
puts parser.help
|
||||
exit 1
|
||||
}
|
||||
begin
|
||||
parser.parse!
|
||||
rescue OptionParser::ParseError => err
|
||||
$stderr.puts err.message
|
||||
$stderr.puts parser.help
|
||||
exit 1
|
||||
end
|
||||
if ARGV.empty?
|
||||
$stderr.puts 'no input'
|
||||
exit 1
|
||||
end
|
||||
if ARGV.size > 1
|
||||
$stderr.puts 'too many input'
|
||||
exit 1
|
||||
end
|
||||
input = ARGV[0]
|
||||
|
||||
begin
|
||||
$stderr.puts 'Parsing grammar file...' if verbose
|
||||
result = profiler.section('parse') {
|
||||
parser = Racc::GrammarFileParser.new(debug_flags)
|
||||
parser.parse(File.read(input), File.basename(input))
|
||||
}
|
||||
if check_only
|
||||
$stderr.puts 'syntax ok'
|
||||
exit 0
|
||||
end
|
||||
|
||||
$stderr.puts 'Generating LALR states...' if verbose
|
||||
states = profiler.section('nfa') {
|
||||
Racc::States.new(result.grammar).nfa
|
||||
}
|
||||
|
||||
$stderr.puts "Resolving #{states.size} states..." if verbose
|
||||
profiler.section('dfa') {
|
||||
states.dfa
|
||||
}
|
||||
|
||||
$stderr.puts 'Creating parser file...' if verbose
|
||||
params = result.params.dup
|
||||
# Overwrites parameters given by a grammar file with command line options.
|
||||
params.superclass = superclass if superclass
|
||||
params.omit_action_call = true if omit_action_call
|
||||
# From command line option
|
||||
if make_executable
|
||||
params.make_executable = true
|
||||
params.interpreter = rubypath
|
||||
end
|
||||
params.debug_parser = debug_parser
|
||||
params.convert_line = line_convert
|
||||
params.convert_line_all = line_convert_all
|
||||
params.embed_runtime = embed_runtime
|
||||
profiler.section('generation') {
|
||||
generator = Racc::ParserFileGenerator.new(states, params)
|
||||
generator.generate_parser_file(output || make_filename(input, '.tab.rb'))
|
||||
}
|
||||
|
||||
if make_logfile
|
||||
profiler.section('logging') {
|
||||
$stderr.puts 'Creating log file...' if verbose
|
||||
logfilename ||= make_filename(output || File.basename(input), '.output')
|
||||
File.open(logfilename, 'w') {|f|
|
||||
Racc::LogFileGenerator.new(states, debug_flags).output f
|
||||
}
|
||||
}
|
||||
end
|
||||
if debug_flags.status_logging
|
||||
log_useless states.grammar
|
||||
log_conflict states
|
||||
else
|
||||
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
|
||||
rescue Racc::Error, Errno::ENOENT, Errno::EPERM => err
|
||||
raise if $DEBUG or debug_flags.any?
|
||||
lineno = err.message.slice(/\A\d+:/).to_s
|
||||
$stderr.puts "#{File.basename $0}: #{input}:#{lineno} #{err.message.strip}"
|
||||
exit 1
|
||||
end
|
||||
end
|
||||
|
||||
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)
|
||||
logging('w') {|f|
|
||||
f.puts "ex#{states.grammar.n_expected_srconflicts}"
|
||||
if states.should_report_srconflict?
|
||||
f.puts "sr#{states.n_srconflicts}"
|
||||
end
|
||||
if states.rrconflict_exist?
|
||||
f.puts "rr#{states.n_rrconflicts}"
|
||||
end
|
||||
}
|
||||
end
|
||||
|
||||
# @return [Boolean] if anything was reported
|
||||
def report_useless(grammar)
|
||||
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)
|
||||
logging('a') {|f|
|
||||
if grammar.useless_nonterminal_exist?
|
||||
f.puts "un#{grammar.n_useless_nonterminals}"
|
||||
end
|
||||
if grammar.useless_rule_exist?
|
||||
f.puts "ur#{grammar.n_useless_rules}"
|
||||
end
|
||||
}
|
||||
end
|
||||
|
||||
def logging(mode, &block)
|
||||
File.open("log/#{File.basename(ARGV[0])}", mode, &block)
|
||||
end
|
||||
|
||||
class RaccProfiler
|
||||
def initialize(really)
|
||||
@really = really
|
||||
@log = []
|
||||
unless ::Process.respond_to?(:times)
|
||||
# Ruby 1.6
|
||||
@class = ::Time
|
||||
else
|
||||
@class = ::Process
|
||||
end
|
||||
end
|
||||
|
||||
def section(name)
|
||||
if @really
|
||||
t1 = @class.times.utime
|
||||
result = yield
|
||||
t2 = @class.times.utime
|
||||
@log.push [name, t2 - t1]
|
||||
result
|
||||
else
|
||||
yield
|
||||
end
|
||||
end
|
||||
|
||||
def report
|
||||
return unless @really
|
||||
f = $stderr
|
||||
total = cumulative_time()
|
||||
f.puts '--task-----------+--sec------+---%-'
|
||||
@log.each do |name, time|
|
||||
f.printf "%-19s %s %3d%%\n", name, pjust(time,4,4), (time/total*100).to_i
|
||||
end
|
||||
f.puts '-----------------+-----------+-----'
|
||||
f.printf "%-20s%s\n", 'total', pjust(total,4,4)
|
||||
end
|
||||
|
||||
private
|
||||
|
||||
def cumulative_time
|
||||
t = @log.inject(0) {|sum, (name, time)| sum + time }
|
||||
t == 0 ? 0.01 : t
|
||||
end
|
||||
|
||||
def pjust(num, i, j)
|
||||
m = /(\d+)(\.\d+)?/.match(num.to_s)
|
||||
str = m[1].rjust(i)
|
||||
str.concat m[2].ljust(j+1)[0,j+1] if m[2]
|
||||
str
|
||||
end
|
||||
end
|
||||
|
||||
main
|
||||
Загрузка…
Ссылка в новой задаче