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Edit File : pp.rb \| Size : 14.20 KB
# frozen_string_literal: true require 'prettyprint' module Kernel # Returns a pretty printed object as a string. # # In order to use this method you must first require the PP module: # # require 'pp' # # See the PP module for more information. def pretty_inspect PP.pp(self, ''.dup) end private # prints arguments in pretty form. # # pp returns argument(s). def pp(objs) # :nodoc: objs.each {\|obj\| PP.pp(obj) } objs.size <= 1 ? objs.first : objs end module_function :pp # :nodoc: end ## # A pretty-printer for Ruby objects. # # All examples assume you have loaded the PP class with: # require 'pp' # ## # == What PP Does # # Standard output by #p returns this: # #<PP:0x81fedf0 @genspace=#<Proc:0x81feda0>, @group_queue=#<PrettyPrint::GroupQueue:0x81fed3c @queue=[[#<PrettyPrint::Group:0x81fed78 @breakables=[], @depth=0, @break=false>], []]>, @buffer=[], @newline="\n", @group_stack=[#<PrettyPrint::Group:0x81fed78 @breakables=[], @depth=0, @break=false>], @buffer_width=0, @indent=0, @maxwidth=79, @output_width=2, @output=#<IO:0x8114ee4>> # # Pretty-printed output returns this: # #<PP:0x81fedf0 # @buffer=[], # @buffer_width=0, # @genspace=#<Proc:0x81feda0>, # @group_queue= # #<PrettyPrint::GroupQueue:0x81fed3c # @queue= # [[#<PrettyPrint::Group:0x81fed78 @break=false, @breakables=[], @depth=0>], # []]>, # @group_stack= # [#<PrettyPrint::Group:0x81fed78 @break=false, @breakables=[], @depth=0>], # @indent=0, # @maxwidth=79, # @newline="\n", # @output=#<IO:0x8114ee4>, # @output_width=2> # ## # == Usage # # pp(obj) #=> obj # pp obj #=> obj # pp(obj1, obj2, ...) #=> [obj1, obj2, ...] # pp() #=> nil # # Output <tt>obj(s)</tt> to <tt>$></tt> in pretty printed format. # # It returns <tt>obj(s)</tt>. # ## # == Output Customization # # To define a customized pretty printing function for your classes, # redefine method <code>#pretty_print(pp)</code> in the class. # # <code>#pretty_print</code> takes the +pp+ argument, which is an instance of the PP class. # The method uses #text, #breakable, #nest, #group and #pp to print the # object. # ## # == Pretty-Print JSON # # To pretty-print JSON refer to JSON#pretty_generate. # ## # == Author # Tanaka Akira <akr@fsij.org> class PP < PrettyPrint # Outputs +obj+ to +out+ in pretty printed format of # +width+ columns in width. # # If +out+ is omitted, <code>$></code> is assumed. # If +width+ is omitted, 79 is assumed. # # PP.pp returns +out+. def PP.pp(obj, out=$>, width=79) q = PP.new(out, width) q.guard_inspect_key {q.pp obj} q.flush #$pp = q out << "\n" end # Outputs +obj+ to +out+ like PP.pp but with no indent and # newline. # # PP.singleline_pp returns +out+. def PP.singleline_pp(obj, out=$>) q = SingleLine.new(out) q.guard_inspect_key {q.pp obj} q.flush out end # :stopdoc: def PP.mcall(obj, mod, meth, args, &block) mod.instance_method(meth).bind(obj).call(args, &block) end # :startdoc: @sharing_detection = false class << self # Returns the sharing detection flag as a boolean value. # It is false by default. attr_accessor :sharing_detection end module PPMethods # Yields to a block # and preserves the previous set of objects being printed. def guard_inspect_key if Thread.current[:__recursive_key__] == nil Thread.current[:__recursive_key__] = {}.taint end if Thread.current[:__recursive_key__][:inspect] == nil Thread.current[:__recursive_key__][:inspect] = {}.taint end save = Thread.current[:__recursive_key__][:inspect] begin Thread.current[:__recursive_key__][:inspect] = {}.taint yield ensure Thread.current[:__recursive_key__][:inspect] = save end end # Check whether the object_id +id+ is in the current buffer of objects # to be pretty printed. Used to break cycles in chains of objects to be # pretty printed. def check_inspect_key(id) Thread.current[:__recursive_key__] && Thread.current[:__recursive_key__][:inspect] && Thread.current[:__recursive_key__][:inspect].include?(id) end # Adds the object_id +id+ to the set of objects being pretty printed, so # as to not repeat objects. def push_inspect_key(id) Thread.current[:__recursive_key__][:inspect][id] = true end # Removes an object from the set of objects being pretty printed. def pop_inspect_key(id) Thread.current[:__recursive_key__][:inspect].delete id end # Adds +obj+ to the pretty printing buffer # using Object#pretty_print or Object#pretty_print_cycle. # # Object#pretty_print_cycle is used when +obj+ is already # printed, a.k.a the object reference chain has a cycle. def pp(obj) id = obj.object_id if check_inspect_key(id) group {obj.pretty_print_cycle self} return end begin push_inspect_key(id) group {obj.pretty_print self} ensure pop_inspect_key(id) unless PP.sharing_detection end end # A convenience method which is same as follows: # # group(1, '#<' + obj.class.name, '>') { ... } def object_group(obj, &block) # :yield: group(1, '#<' + obj.class.name, '>', &block) end # A convenience method, like object_group, but also reformats the Object's # object_id. def object_address_group(obj, &block) str = Kernel.instance_method(:to_s).bind(obj).call str.chomp!('>') group(1, str, '>', &block) end # A convenience method which is same as follows: # # text ',' # breakable def comma_breakable text ',' breakable end # Adds a separated list. # The list is separated by comma with breakable space, by default. # # #seplist iterates the +list+ using +iter_method+. # It yields each object to the block given for #seplist. # The procedure +separator_proc+ is called between each yields. # # If the iteration is zero times, +separator_proc+ is not called at all. # # If +separator_proc+ is nil or not given, # +lambda { comma_breakable }+ is used. # If +iter_method+ is not given, :each is used. # # For example, following 3 code fragments has similar effect. # # q.seplist([1,2,3]) {\|v\| xxx v } # # q.seplist([1,2,3], lambda { q.comma_breakable }, :each) {\|v\| xxx v } # # xxx 1 # q.comma_breakable # xxx 2 # q.comma_breakable # xxx 3 def seplist(list, sep=nil, iter_method=:each) # :yield: element sep \|\|= lambda { comma_breakable } first = true list.__send__(iter_method) {\|v\| if first first = false else sep.call end yield(*v) } end # A present standard failsafe for pretty printing any given Object def pp_object(obj) object_address_group(obj) { seplist(obj.pretty_print_instance_variables, lambda { text ',' }) {\|v\| breakable v = v.to_s if Symbol === v text v text '=' group(1) { breakable '' pp(obj.instance_eval(v)) } } } end # A pretty print for a Hash def pp_hash(obj) group(1, '{', '}') { seplist(obj, nil, :each_pair) {\|k, v\| group { pp k text '=>' group(1) { breakable '' pp v } } } } end end include PPMethods class SingleLine < PrettyPrint::SingleLine # :nodoc: include PPMethods end module ObjectMixin # :nodoc: # 1. specific pretty_print # 2. specific inspect # 3. generic pretty_print # A default pretty printing method for general objects. # It calls #pretty_print_instance_variables to list instance variables. # # If +self+ has a customized (redefined) #inspect method, # the result of self.inspect is used but it obviously has no # line break hints. # # This module provides predefined #pretty_print methods for some of # the most commonly used built-in classes for convenience. def pretty_print(q) method_method = Object.instance_method(:method).bind(self) begin inspect_method = method_method.call(:inspect) rescue NameError end if inspect_method && /\(Kernel\)#/ !~ inspect_method.inspect q.text self.inspect elsif !inspect_method && self.respond_to?(:inspect) q.text self.inspect else q.pp_object(self) end end # A default pretty printing method for general objects that are # detected as part of a cycle. def pretty_print_cycle(q) q.object_address_group(self) { q.breakable q.text '...' } end # Returns a sorted array of instance variable names. # # This method should return an array of names of instance variables as symbols or strings as: # +[:@a, :@b]+. def pretty_print_instance_variables instance_variables.sort end # Is #inspect implementation using #pretty_print. # If you implement #pretty_print, it can be used as follows. # # alias inspect pretty_print_inspect # # However, doing this requires that every class that #inspect is called on # implement #pretty_print, or a RuntimeError will be raised. def pretty_print_inspect if /\(PP::ObjectMixin\)#/ =~ Object.instance_method(:method).bind(self).call(:pretty_print).inspect raise "pretty_print is not overridden for #{self.class}" end PP.singleline_pp(self, ''.dup) end end end class Array # :nodoc: def pretty_print(q) # :nodoc: q.group(1, '[', ']') { q.seplist(self) {\|v\| q.pp v } } end def pretty_print_cycle(q) # :nodoc: q.text(empty? ? '[]' : '[...]') end end class Hash # :nodoc: def pretty_print(q) # :nodoc: q.pp_hash self end def pretty_print_cycle(q) # :nodoc: q.text(empty? ? '{}' : '{...}') end end class << ENV # :nodoc: def pretty_print(q) # :nodoc: h = {} ENV.keys.sort.each {\|k\| h[k] = ENV[k] } q.pp_hash h end end class Struct # :nodoc: def pretty_print(q) # :nodoc: q.group(1, sprintf("#<struct %s", PP.mcall(self, Kernel, :class).name), '>') { q.seplist(PP.mcall(self, Struct, :members), lambda { q.text "," }) {\|member\| q.breakable q.text member.to_s q.text '=' q.group(1) { q.breakable '' q.pp self[member] } } } end def pretty_print_cycle(q) # :nodoc: q.text sprintf("#<struct %s:...>", PP.mcall(self, Kernel, :class).name) end end class Range # :nodoc: def pretty_print(q) # :nodoc: q.pp self.begin q.breakable '' q.text(self.exclude_end? ? '...' : '..') q.breakable '' q.pp self.end end end class File < IO # :nodoc: class Stat # :nodoc: def pretty_print(q) # :nodoc: require 'etc.so' q.object_group(self) { q.breakable q.text sprintf("dev=0x%x", self.dev); q.comma_breakable q.text "ino="; q.pp self.ino; q.comma_breakable q.group { m = self.mode q.text sprintf("mode=0%o", m) q.breakable q.text sprintf("(%s %c%c%c%c%c%c%c%c%c)", self.ftype, (m & 0400 == 0 ? ?- : ?r), (m & 0200 == 0 ? ?- : ?w), (m & 0100 == 0 ? (m & 04000 == 0 ? ?- : ?S) : (m & 04000 == 0 ? ?x : ?s)), (m & 0040 == 0 ? ?- : ?r), (m & 0020 == 0 ? ?- : ?w), (m & 0010 == 0 ? (m & 02000 == 0 ? ?- : ?S) : (m & 02000 == 0 ? ?x : ?s)), (m & 0004 == 0 ? ?- : ?r), (m & 0002 == 0 ? ?- : ?w), (m & 0001 == 0 ? (m & 01000 == 0 ? ?- : ?T) : (m & 01000 == 0 ? ?x : ?t))) } q.comma_breakable q.text "nlink="; q.pp self.nlink; q.comma_breakable q.group { q.text "uid="; q.pp self.uid begin pw = Etc.getpwuid(self.uid) rescue ArgumentError end if pw q.breakable; q.text "(#{pw.name})" end } q.comma_breakable q.group { q.text "gid="; q.pp self.gid begin gr = Etc.getgrgid(self.gid) rescue ArgumentError end if gr q.breakable; q.text "(#{gr.name})" end } q.comma_breakable q.group { q.text sprintf("rdev=0x%x", self.rdev) if self.rdev_major && self.rdev_minor q.breakable q.text sprintf('(%d, %d)', self.rdev_major, self.rdev_minor) end } q.comma_breakable q.text "size="; q.pp self.size; q.comma_breakable q.text "blksize="; q.pp self.blksize; q.comma_breakable q.text "blocks="; q.pp self.blocks; q.comma_breakable q.group { t = self.atime q.text "atime="; q.pp t q.breakable; q.text "(#{t.tv_sec})" } q.comma_breakable q.group { t = self.mtime q.text "mtime="; q.pp t q.breakable; q.text "(#{t.tv_sec})" } q.comma_breakable q.group { t = self.ctime q.text "ctime="; q.pp t q.breakable; q.text "(#{t.tv_sec})" } } end end end class MatchData # :nodoc: def pretty_print(q) # :nodoc: nc = [] self.regexp.named_captures.each {\|name, indexes\| indexes.each {\|i\| nc[i] = name } } q.object_group(self) { q.breakable q.seplist(0...self.size, lambda { q.breakable }) {\|i\| if i == 0 q.pp self[i] else if nc[i] q.text nc[i] else q.pp i end q.text ':' q.pp self[i] end } } end end class Object < BasicObject # :nodoc: include PP::ObjectMixin end [Numeric, Symbol, FalseClass, TrueClass, NilClass, Module].each {\|c\| c.class_eval { def pretty_print_cycle(q) q.text inspect end } } [Numeric, FalseClass, TrueClass, Module].each {\|c\| c.class_eval { def pretty_print(q) q.text inspect end } } Back

Edit File : pp.rb | Size : 14.20 KB

# frozen_string_literal: true

require 'prettyprint'

module Kernel
  # Returns a pretty printed object as a string.
  #
  # In order to use this method you must first require the PP module:
  #
  #   require 'pp'
  #
  # See the PP module for more information.
  def pretty_inspect
    PP.pp(self, ''.dup)
  end

private
  # prints arguments in pretty form.
  #
  # pp returns argument(s).
  def pp(*objs) # :nodoc:
    objs.each {|obj|
      PP.pp(obj)
    }
    objs.size <= 1 ? objs.first : objs
  end
  module_function :pp # :nodoc:
end

##
# A pretty-printer for Ruby objects.
#
# All examples assume you have loaded the PP class with:
#   require 'pp'
#
##
# == What PP Does
#
# Standard output by #p returns this:
#   #<PP:0x81fedf0 @genspace=#<Proc:0x81feda0>, @group_queue=#<PrettyPrint::GroupQueue:0x81fed3c @queue=[[#<PrettyPrint::Group:0x81fed78 @breakables=[], @depth=0, @break=false>], []]>, @buffer=[], @newline="\n", @group_stack=[#<PrettyPrint::Group:0x81fed78 @breakables=[], @depth=0, @break=false>], @buffer_width=0, @indent=0, @maxwidth=79, @output_width=2, @output=#<IO:0x8114ee4>>
#
# Pretty-printed output returns this:
#   #<PP:0x81fedf0
#    @buffer=[],
#    @buffer_width=0,
#    @genspace=#<Proc:0x81feda0>,
#    @group_queue=
#     #<PrettyPrint::GroupQueue:0x81fed3c
#      @queue=
#       [[#<PrettyPrint::Group:0x81fed78 @break=false, @breakables=[], @depth=0>],
#        []]>,
#    @group_stack=
#     [#<PrettyPrint::Group:0x81fed78 @break=false, @breakables=[], @depth=0>],
#    @indent=0,
#    @maxwidth=79,
#    @newline="\n",
#    @output=#<IO:0x8114ee4>,
#    @output_width=2>
#
##
# == Usage
#
#   pp(obj)             #=> obj
#   pp obj              #=> obj
#   pp(obj1, obj2, ...) #=> [obj1, obj2, ...]
#   pp()                #=> nil
#
# Output <tt>obj(s)</tt> to <tt>$></tt> in pretty printed format.
#
# It returns <tt>obj(s)</tt>.
#
##
# == Output Customization
#
# To define a customized pretty printing function for your classes,
# redefine method <code>#pretty_print(pp)</code> in the class.
#
# <code>#pretty_print</code> takes the +pp+ argument, which is an instance of the PP class.
# The method uses #text, #breakable, #nest, #group and #pp to print the
# object.
#
##
# == Pretty-Print JSON
#
# To pretty-print JSON refer to JSON#pretty_generate.
#
##
# == Author
# Tanaka Akira <akr@fsij.org>

class PP < PrettyPrint
  # Outputs +obj+ to +out+ in pretty printed format of
  # +width+ columns in width.
  #
  # If +out+ is omitted, <code>$></code> is assumed.
  # If +width+ is omitted, 79 is assumed.
  #
  # PP.pp returns +out+.
  def PP.pp(obj, out=$>, width=79)
    q = PP.new(out, width)
    q.guard_inspect_key {q.pp obj}
    q.flush
    #$pp = q
    out << "\n"
  end

# Outputs +obj+ to +out+ like PP.pp but with no indent and
  # newline.
  #
  # PP.singleline_pp returns +out+.
  def PP.singleline_pp(obj, out=$>)
    q = SingleLine.new(out)
    q.guard_inspect_key {q.pp obj}
    q.flush
    out
  end

# :stopdoc:
  def PP.mcall(obj, mod, meth, *args, &block)
    mod.instance_method(meth).bind(obj).call(*args, &block)
  end
  # :startdoc:

@sharing_detection = false
  class << self
    # Returns the sharing detection flag as a boolean value.
    # It is false by default.
    attr_accessor :sharing_detection
  end

module PPMethods

# Yields to a block
    # and preserves the previous set of objects being printed.
    def guard_inspect_key
      if Thread.current[:__recursive_key__] == nil
        Thread.current[:__recursive_key__] = {}.taint
      end

if Thread.current[:__recursive_key__][:inspect] == nil
        Thread.current[:__recursive_key__][:inspect] = {}.taint
      end

save = Thread.current[:__recursive_key__][:inspect]

begin
        Thread.current[:__recursive_key__][:inspect] = {}.taint
        yield
      ensure
        Thread.current[:__recursive_key__][:inspect] = save
      end
    end

# Check whether the object_id +id+ is in the current buffer of objects
    # to be pretty printed. Used to break cycles in chains of objects to be
    # pretty printed.
    def check_inspect_key(id)
      Thread.current[:__recursive_key__] &&
      Thread.current[:__recursive_key__][:inspect] &&
      Thread.current[:__recursive_key__][:inspect].include?(id)
    end

# Adds the object_id +id+ to the set of objects being pretty printed, so
    # as to not repeat objects.
    def push_inspect_key(id)
      Thread.current[:__recursive_key__][:inspect][id] = true
    end

# Removes an object from the set of objects being pretty printed.
    def pop_inspect_key(id)
      Thread.current[:__recursive_key__][:inspect].delete id
    end

# Adds +obj+ to the pretty printing buffer
    # using Object#pretty_print or Object#pretty_print_cycle.
    #
    # Object#pretty_print_cycle is used when +obj+ is already
    # printed, a.k.a the object reference chain has a cycle.
    def pp(obj)
      id = obj.object_id

if check_inspect_key(id)
        group {obj.pretty_print_cycle self}
        return
      end

begin
        push_inspect_key(id)
        group {obj.pretty_print self}
      ensure
        pop_inspect_key(id) unless PP.sharing_detection
      end
    end

# A convenience method which is same as follows:
    #
    #   group(1, '#<' + obj.class.name, '>') { ... }
    def object_group(obj, &block) # :yield:
      group(1, '#<' + obj.class.name, '>', &block)
    end

# A convenience method, like object_group, but also reformats the Object's
    # object_id.
    def object_address_group(obj, &block)
      str = Kernel.instance_method(:to_s).bind(obj).call
      str.chomp!('>')
      group(1, str, '>', &block)
    end

# A convenience method which is same as follows:
    #
    #   text ','
    #   breakable
    def comma_breakable
      text ','
      breakable
    end

# Adds a separated list.
    # The list is separated by comma with breakable space, by default.
    #
    # #seplist iterates the +list+ using +iter_method+.
    # It yields each object to the block given for #seplist.
    # The procedure +separator_proc+ is called between each yields.
    #
    # If the iteration is zero times, +separator_proc+ is not called at all.
    #
    # If +separator_proc+ is nil or not given,
    # +lambda { comma_breakable }+ is used.
    # If +iter_method+ is not given, :each is used.
    #
    # For example, following 3 code fragments has similar effect.
    #
    #   q.seplist([1,2,3]) {|v| xxx v }
    #
    #   q.seplist([1,2,3], lambda { q.comma_breakable }, :each) {|v| xxx v }
    #
    #   xxx 1
    #   q.comma_breakable
    #   xxx 2
    #   q.comma_breakable
    #   xxx 3
    def seplist(list, sep=nil, iter_method=:each) # :yield: element
      sep ||= lambda { comma_breakable }
      first = true
      list.__send__(iter_method) {|*v|
        if first
          first = false
        else
          sep.call
        end
        yield(*v)
      }
    end

# A present standard failsafe for pretty printing any given Object
    def pp_object(obj)
      object_address_group(obj) {
        seplist(obj.pretty_print_instance_variables, lambda { text ',' }) {|v|
          breakable
          v = v.to_s if Symbol === v
          text v
          text '='
          group(1) {
            breakable ''
            pp(obj.instance_eval(v))
          }
        }
      }
    end

# A pretty print for a Hash
    def pp_hash(obj)
      group(1, '{', '}') {
        seplist(obj, nil, :each_pair) {|k, v|
          group {
            pp k
            text '=>'
            group(1) {
              breakable ''
              pp v
            }
          }
        }
      }
    end
  end

include PPMethods

class SingleLine < PrettyPrint::SingleLine # :nodoc:
    include PPMethods
  end

module ObjectMixin # :nodoc:
    # 1. specific pretty_print
    # 2. specific inspect
    # 3. generic pretty_print

# A default pretty printing method for general objects.
    # It calls #pretty_print_instance_variables to list instance variables.
    #
    # If +self+ has a customized (redefined) #inspect method,
    # the result of self.inspect is used but it obviously has no
    # line break hints.
    #
    # This module provides predefined #pretty_print methods for some of
    # the most commonly used built-in classes for convenience.
    def pretty_print(q)
      method_method = Object.instance_method(:method).bind(self)
      begin
        inspect_method = method_method.call(:inspect)
      rescue NameError
      end
      if inspect_method && /$Kernel$#/ !~ inspect_method.inspect
        q.text self.inspect
      elsif !inspect_method && self.respond_to?(:inspect)
        q.text self.inspect
      else
        q.pp_object(self)
      end
    end

# A default pretty printing method for general objects that are
    # detected as part of a cycle.
    def pretty_print_cycle(q)
      q.object_address_group(self) {
        q.breakable
        q.text '...'
      }
    end

# Returns a sorted array of instance variable names.
    #
    # This method should return an array of names of instance variables as symbols or strings as:
    # +[:@a, :@b]+.
    def pretty_print_instance_variables
      instance_variables.sort
    end

# Is #inspect implementation using #pretty_print.
    # If you implement #pretty_print, it can be used as follows.
    #
    #   alias inspect pretty_print_inspect
    #
    # However, doing this requires that every class that #inspect is called on
    # implement #pretty_print, or a RuntimeError will be raised.
    def pretty_print_inspect
      if /$PP::ObjectMixin$#/ =~ Object.instance_method(:method).bind(self).call(:pretty_print).inspect
        raise "pretty_print is not overridden for #{self.class}"
      end
      PP.singleline_pp(self, ''.dup)
    end
  end
end

class Array # :nodoc:
  def pretty_print(q) # :nodoc:
    q.group(1, '[', ']') {
      q.seplist(self) {|v|
        q.pp v
      }
    }
  end

def pretty_print_cycle(q) # :nodoc:
    q.text(empty? ? '[]' : '[...]')
  end
end

class Hash # :nodoc:
  def pretty_print(q) # :nodoc:
    q.pp_hash self
  end

def pretty_print_cycle(q) # :nodoc:
    q.text(empty? ? '{}' : '{...}')
  end
end

class << ENV # :nodoc:
  def pretty_print(q) # :nodoc:
    h = {}
    ENV.keys.sort.each {|k|
      h[k] = ENV[k]
    }
    q.pp_hash h
  end
end

class Struct # :nodoc:
  def pretty_print(q) # :nodoc:
    q.group(1, sprintf("#<struct %s", PP.mcall(self, Kernel, :class).name), '>') {
      q.seplist(PP.mcall(self, Struct, :members), lambda { q.text "," }) {|member|
        q.breakable
        q.text member.to_s
        q.text '='
        q.group(1) {
          q.breakable ''
          q.pp self[member]
        }
      }
    }
  end

def pretty_print_cycle(q) # :nodoc:
    q.text sprintf("#<struct %s:...>", PP.mcall(self, Kernel, :class).name)
  end
end

class Range # :nodoc:
  def pretty_print(q) # :nodoc:
    q.pp self.begin
    q.breakable ''
    q.text(self.exclude_end? ? '...' : '..')
    q.breakable ''
    q.pp self.end
  end
end

class File < IO # :nodoc:
  class Stat # :nodoc:
    def pretty_print(q) # :nodoc:
      require 'etc.so'
      q.object_group(self) {
        q.breakable
        q.text sprintf("dev=0x%x", self.dev); q.comma_breakable
        q.text "ino="; q.pp self.ino; q.comma_breakable
        q.group {
          m = self.mode
          q.text sprintf("mode=0%o", m)
          q.breakable
          q.text sprintf("(%s %c%c%c%c%c%c%c%c%c)",
            self.ftype,
            (m & 0400 == 0 ? ?- : ?r),
            (m & 0200 == 0 ? ?- : ?w),
            (m & 0100 == 0 ? (m & 04000 == 0 ? ?- : ?S) :
                             (m & 04000 == 0 ? ?x : ?s)),
            (m & 0040 == 0 ? ?- : ?r),
            (m & 0020 == 0 ? ?- : ?w),
            (m & 0010 == 0 ? (m & 02000 == 0 ? ?- : ?S) :
                             (m & 02000 == 0 ? ?x : ?s)),
            (m & 0004 == 0 ? ?- : ?r),
            (m & 0002 == 0 ? ?- : ?w),
            (m & 0001 == 0 ? (m & 01000 == 0 ? ?- : ?T) :
                             (m & 01000 == 0 ? ?x : ?t)))
        }
        q.comma_breakable
        q.text "nlink="; q.pp self.nlink; q.comma_breakable
        q.group {
          q.text "uid="; q.pp self.uid
          begin
            pw = Etc.getpwuid(self.uid)
          rescue ArgumentError
          end
          if pw
            q.breakable; q.text "(#{pw.name})"
          end
        }
        q.comma_breakable
        q.group {
          q.text "gid="; q.pp self.gid
          begin
            gr = Etc.getgrgid(self.gid)
          rescue ArgumentError
          end
          if gr
            q.breakable; q.text "(#{gr.name})"
          end
        }
        q.comma_breakable
        q.group {
          q.text sprintf("rdev=0x%x", self.rdev)
          if self.rdev_major && self.rdev_minor
            q.breakable
            q.text sprintf('(%d, %d)', self.rdev_major, self.rdev_minor)
          end
        }
        q.comma_breakable
        q.text "size="; q.pp self.size; q.comma_breakable
        q.text "blksize="; q.pp self.blksize; q.comma_breakable
        q.text "blocks="; q.pp self.blocks; q.comma_breakable
        q.group {
          t = self.atime
          q.text "atime="; q.pp t
          q.breakable; q.text "(#{t.tv_sec})"
        }
        q.comma_breakable
        q.group {
          t = self.mtime
          q.text "mtime="; q.pp t
          q.breakable; q.text "(#{t.tv_sec})"
        }
        q.comma_breakable
        q.group {
          t = self.ctime
          q.text "ctime="; q.pp t
          q.breakable; q.text "(#{t.tv_sec})"
        }
      }
    end
  end
end

class MatchData # :nodoc:
  def pretty_print(q) # :nodoc:
    nc = []
    self.regexp.named_captures.each {|name, indexes|
      indexes.each {|i| nc[i] = name }
    }
    q.object_group(self) {
      q.breakable
      q.seplist(0...self.size, lambda { q.breakable }) {|i|
        if i == 0
          q.pp self[i]
        else
          if nc[i]
            q.text nc[i]
          else
            q.pp i
          end
          q.text ':'
          q.pp self[i]
        end
      }
    }
  end
end

class Object < BasicObject # :nodoc:
  include PP::ObjectMixin
end

[Numeric, Symbol, FalseClass, TrueClass, NilClass, Module].each {|c|
  c.class_eval {
    def pretty_print_cycle(q)
      q.text inspect
    end
  }
}

[Numeric, FalseClass, TrueClass, Module].each {|c|
  c.class_eval {
    def pretty_print(q)
      q.text inspect
    end
  }
}

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