Class: BitClust::Subcommands::MethodsCommand

Inherits:
BitClust::Subcommand show all
Includes:
CrossRubyUtils
Defined in:
lib/bitclust/subcommands/methods_command.rb

Constant Summary collapse

ORDER =
{ '.' => 1, '#' => 2, '::' => 3 }

Instance Method Summary collapse

Methods inherited from BitClust::Subcommand

#error, #help, #option_error, #srcdir_root

Constructor Details

#initializeMethodsCommand

Returns a new instance of MethodsCommand.


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# File 'lib/bitclust/subcommands/methods_command.rb', line 13

def initialize
  super
  @requires = []
  @verbose = false
  @version = RUBY_VERSION
  @mode = :list
  @target = nil
  @parser.banner = "Usage: #{File.basename($0, '.*')} [-r<lib>] <classname>"
  @parser.on('-r LIB', 'Requires library LIB') {|lib|
    @requires.push lib
  }
  @parser.on('-v', '--verbose', "Prints each ruby's version") {
    @verbose = true
  }
  @parser.on('--diff=RDFILE', 'RD file name') {|path|
    @mode = :diff
    @target = path
  }
  @parser.on('-c', '') {
    @content = true
    require 'bitclust/ridatabase'
  }
  @parser.on('--ruby=[VER]', "The version of Ruby interpreter"){|version|
    @version = version
  }
  @parser.on('--ri-database', 'The path of ri database'){|path|
    @ri_path = path
  }
end

Instance Method Details

#crossrubyutils_sort_entries(ents) ⇒ Object


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# File 'lib/bitclust/subcommands/methods_command.rb', line 98

def crossrubyutils_sort_entries(ents)
  ents.sort_by {|m| m_order(m) }
end

#defined_methods(ruby, classname) ⇒ Object


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# File 'lib/bitclust/subcommands/methods_command.rb', line 109

def defined_methods(ruby, classname)
  req = @requires.map {|lib| "-r#{lib}" }.join(' ')
  avoid_tracer = ""
  avoid_tracer = "Tracer.off" if @requires.include?("tracer")
  case classname
  when 'Object'
    script = <<-SCRIPT
      c = #{classname}
      c.singleton_methods(false).each do |m|
        puts "#{classname}.\#{m}"
      end
      c.instance_methods(true).each do |m|
        puts "#{classname}\\#\#{m}"
      end
    SCRIPT
  when 'Kernel'
    script = <<-SCRIPT
      c = #{classname}
      c.singleton_methods(true).each do |m|
        puts "#{classname}.\#{m}"
      end
      ( c.private_instance_methods(false) && c.methods(false) ).each do |m|
        puts "#{classname}\\#\#{m}"
      end
      Object::constants.delete_if{|c| cl = Object.const_get(c).class; cl == Class or cl == Module }.each do |m|
        puts "#{classname}::\#{m}"
      end
      global_variables.each do |m|
        puts "#{classname}\#{m}"
      end
    SCRIPT
  when 'ARGF'
    script = <<-SCRIPT
      c = #{classname}.class
      c.singleton_methods(false).each do |m|
        puts "\#{c.to_s}.\#{m}"
      end
      c.instance_methods(false).each do |m|
        puts "\#{c.to_s}\\#\#{m}"
      end
      c.ancestors.map {|mod| mod.constants }.inject {|r,n| r - n }.each do |m|
        puts "\#{c.to_s}::\#{m}"
      end
    SCRIPT
  else
    script = <<-SCRIPT
      #{avoid_tracer}
      c = #{classname}
      c.singleton_methods(false).each do |m|
        puts "#{classname}.\#{m}"
      end
      c.instance_methods(false).each do |m|
        puts "#{classname}\\#\#{m}"
      end
      c.ancestors.map {|mod| mod.constants }.inject {|r,n| r-n }.each do |m|
        puts "#{classname}::\#{m}"
      end
    SCRIPT
  end
  `#{ruby} #{req} -e '#{script}'`.split
end

#exec(argv, options) ⇒ Object


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# File 'lib/bitclust/subcommands/methods_command.rb', line 48

def exec(argv, options)
  classname = argv[0]
  case @mode
  when :list
    print_crossruby_table {|ruby| defined_methods(ruby, classname) }
  when :diff
    unless ruby = get_ruby(@version)
      raise "Not found Ruby interpreter of the given version"
    end
    keys = defined_methods(ruby, classname)
    lib = RRDParser.parse_stdlib_file(@target, { 'version' => @version })
    c = lib.fetch_class(classname)
    list0 = lib.classes.find_all{|c0| /\A#{classname}\b/o =~ c0.name }
    list0 = c.entries + list0
    list = list0.map {|ent| ent.labels.map {|n| expand_mf(n) } }.flatten
    if @content
      ri = @ri_path ? RiDatabase.open(@ri_path, nil) : RiDatabase.open_system_db
      ri.current_class = c.name
      mthds = ( ri.singleton_methods + ri.instance_methods )
      fmt = Formatter.new
      (keys - list).sort.each do |name|
        mthd = mthds.find{|m| name == m.fullname }
        if mthd
          puts fmt.method_info(mthd.entry)
        else
          name = name.sub(/\A\w+#/, '')
          puts "--- #{name}\n\#@todo\n\n"
        end
      end
    else
      (keys - list).sort.each do |name|
        puts "-#{name}"
      end
      (list - keys).sort.each do |name|
        puts "+#{name}"
      end
    end
  else
    raise "must not happen: #{mode.inspect}"
  end
end

#expand_mf(n) ⇒ Object


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# File 'lib/bitclust/subcommands/methods_command.rb', line 90

def expand_mf(n)
  if /\.\#/ =~ n
    [n.sub(/\.\#/, '.'), n.sub(/\.\#/, '#')]
  else
    n
  end
end

#m_order(m) ⇒ Object


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# File 'lib/bitclust/subcommands/methods_command.rb', line 104

def m_order(m)
  m, t, c = *m.reverse.split(/(\#|\.|::)/, 2)
  [ORDER[t] || 0, m.reverse]
end

#parse(argv) ⇒ Object


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# File 'lib/bitclust/subcommands/methods_command.rb', line 43

def parse(argv)
  super
  option_error("wrong number of arguments") unless argv.size == 1
end