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ðŸ“„ English.rb(6.44 KB)
ðŸ“„ abbrev.rb(3.31 KB)
ðŸ“„ base64.rb(2.63 KB)
ðŸ“„ benchmark.rb(17.94 KB)
ðŸ“ cgi
ðŸ“„ cgi.rb(9.39 KB)
ðŸ“„ cmath.rb(7.22 KB)
ðŸ“„ complex.rb(380 B)
ðŸ“„ csv.rb(81.32 KB)
ðŸ“ date
ðŸ“„ date.rb(946 B)
ðŸ“„ debug.rb(28.9 KB)
ðŸ“„ delegate.rb(9.78 KB)
ðŸ“ digest
ðŸ“„ digest.rb(2.24 KB)
ðŸ“ dl
ðŸ“„ dl.rb(280 B)
ðŸ“ drb
ðŸ“„ drb.rb(19 B)
ðŸ“„ e2mmap.rb(3.8 KB)
ðŸ“„ erb.rb(26.08 KB)
ðŸ“„ expect.rb(2.14 KB)
ðŸ“ fiddle
ðŸ“„ fiddle.rb(1.25 KB)
ðŸ“„ fileutils.rb(46.35 KB)
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ðŸ“„ forwardable.rb(7.56 KB)
ðŸ“„ getoptlong.rb(15.38 KB)
ðŸ“„ gserver.rb(8.86 KB)
ðŸ“„ ipaddr.rb(26.17 KB)
ðŸ“ irb
ðŸ“„ irb.rb(20.03 KB)
ðŸ“ json
ðŸ“„ json.rb(1.74 KB)
ðŸ“„ kconv.rb(5.74 KB)
ðŸ“„ logger.rb(20.96 KB)
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ðŸ“„ matrix.rb(45.02 KB)
ðŸ“„ mkmf.rb(78.19 KB)
ðŸ“„ monitor.rb(6.93 KB)
ðŸ“„ mutex_m.rb(2 KB)
ðŸ“ net
ðŸ“„ observer.rb(5.71 KB)
ðŸ“„ open-uri.rb(23.66 KB)
ðŸ“„ open3.rb(21.17 KB)
ðŸ“ openssl
ðŸ“„ openssl.rb(528 B)
ðŸ“ optparse
ðŸ“„ optparse.rb(51.27 KB)
ðŸ“„ ostruct.rb(7.64 KB)
ðŸ“„ pathname.rb(15.3 KB)
ðŸ“„ pp.rb(13.14 KB)
ðŸ“„ prettyprint.rb(9.63 KB)
ðŸ“„ prime.rb(13.98 KB)
ðŸ“„ profile.rb(205 B)
ðŸ“„ profiler.rb(4.29 KB)
ðŸ“„ pstore.rb(14.85 KB)
ðŸ“ psych
ðŸ“„ psych.rb(9.9 KB)
ðŸ“ racc
ðŸ“ rake
ðŸ“„ rake.rb(2.07 KB)
ðŸ“„ rational.rb(308 B)
ðŸ“ rbconfig
ðŸ“ rdoc
ðŸ“„ rdoc.rb(4.88 KB)
ðŸ“„ resolv-replace.rb(1.73 KB)
ðŸ“„ resolv.rb(61.45 KB)
ðŸ“ rexml
ðŸ“ rinda
ðŸ“ ripper
ðŸ“„ ripper.rb(2.53 KB)
ðŸ“ rss
ðŸ“„ rss.rb(2.84 KB)
ðŸ“ rubygems
ðŸ“„ rubygems.rb(27.53 KB)
ðŸ“„ scanf.rb(23.52 KB)
ðŸ“„ securerandom.rb(8.56 KB)
ðŸ“„ set.rb(17.32 KB)
ðŸ“ shell
ðŸ“„ shell.rb(10.3 KB)
ðŸ“„ shellwords.rb(5.94 KB)
ðŸ“„ singleton.rb(4.02 KB)
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ðŸ“„ sync.rb(7.26 KB)
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ðŸ“„ tempfile.rb(10.15 KB)
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ðŸ“„ thread.rb(6.94 KB)
ðŸ“„ thwait.rb(3.38 KB)
ðŸ“„ time.rb(21.09 KB)
ðŸ“„ timeout.rb(3.16 KB)
ðŸ“„ tmpdir.rb(4.15 KB)
ðŸ“„ tracer.rb(6.54 KB)
ðŸ“„ tsort.rb(6.79 KB)
ðŸ“„ ubygems.rb(268 B)
ðŸ“„ un.rb(8.34 KB)
ðŸ“ uri
ðŸ“„ uri.rb(3.07 KB)
ðŸ“„ weakref.rb(3.23 KB)
ðŸ“ webrick
ðŸ“„ webrick.rb(6.7 KB)
ðŸ“ x86_64-linux
ðŸ“ xmlrpc
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ðŸ“ yaml
ðŸ“„ yaml.rb(2.3 KB)

Editing: ostruct.rb

#
# = ostruct.rb: OpenStruct implementation
#
# Author:: Yukihiro Matsumoto
# Documentation:: Gavin Sinclair
#
# OpenStruct allows the creation of data objects with arbitrary attributes.
# See OpenStruct for an example.
#

#
# An OpenStruct is a data structure, similar to a Hash, that allows the
# definition of arbitrary attributes with their accompanying values. This is
# accomplished by using Ruby's metaprogramming to define methods on the class
# itself.
#
# == Examples:
#
#   require 'ostruct'
#
#   person = OpenStruct.new
#   person.name    = "John Smith"
#   person.age     = 70
#   person.pension = 300
#
#   puts person.name     # -> "John Smith"
#   puts person.age      # -> 70
#   puts person.address  # -> nil
#
# An OpenStruct employs a Hash internally to store the methods and values and
# can even be initialized with one:
#
#   australia = OpenStruct.new(:country => "Australia", :population => 20_000_000)
#   p australia   # -> <OpenStruct country="Australia" population=20000000>
#
# Hash keys with spaces or characters that would normally not be able to use for
# method calls (e.g. ()[]*) will not be immediately available on the
# OpenStruct object as a method for retrieval or assignment, but can be still be
# reached through the Object#send method.
#
#   measurements = OpenStruct.new("length (in inches)" => 24)
#   measurements.send("length (in inches)")  # -> 24
#
#   data_point = OpenStruct.new(:queued? => true)
#   data_point.queued?                       # -> true
#   data_point.send("queued?=",false)
#   data_point.queued?                       # -> false
#
# Removing the presence of a method requires the execution the delete_field
# method as setting the property value to +nil+ will not remove the method.
#
#   first_pet = OpenStruct.new(:name => 'Rowdy', :owner => 'John Smith')
#   first_pet.owner = nil
#   second_pet = OpenStruct.new(:name => 'Rowdy')
#
#   first_pet == second_pet   # -> false
#
#   first_pet.delete_field(:owner)
#   first_pet == second_pet   # -> true
#
#
# == Implementation:
#
# An OpenStruct utilizes Ruby's method lookup structure to and find and define
# the necessary methods for properties. This is accomplished through the method
# method_missing and define_method.
#
# This should be a consideration if there is a concern about the performance of
# the objects that are created, as there is much more overhead in the setting
# of these properties compared to using a Hash or a Struct.
#
class OpenStruct
  #
  # Creates a new OpenStruct object.  By default, the resulting OpenStruct
  # object will have no attributes.
  #
  # The optional +hash+, if given, will generate attributes and values
  # (can be a Hash, an OpenStruct or a Struct).
  # For example:
  #
  #   require 'ostruct'
  #   hash = { "country" => "Australia", :population => 20_000_000 }
  #   data = OpenStruct.new(hash)
  #
  #   p data        # -> <OpenStruct country="Australia" population=20000000>
  #
  def initialize(hash=nil)
    @table = {}
    if hash
      hash.each_pair do |k, v|
        k = k.to_sym
        @table[k] = v
        new_ostruct_member(k)
      end
    end
  end

# Duplicate an OpenStruct object members.
  def initialize_copy(orig)
    super
    @table = @table.dup
    @table.each_key{|key| new_ostruct_member(key)}
  end

#
  # Converts the OpenStruct to a hash with keys representing
  # each attribute (as symbols) and their corresponding values
  # Example:
  #
  #   require 'ostruct'
  #   data = OpenStruct.new("country" => "Australia", :population => 20_000_000)
  #   data.to_h   # => {:country => "Australia", :population => 20000000 }
  #
  def to_h
    @table.dup
  end

#
  # Yields all attributes (as a symbol) along with the corresponding values
  # or returns an enumerator if not block is given.
  # Example:
  #
  #   require 'ostruct'
  #   data = OpenStruct.new("country" => "Australia", :population => 20_000_000)
  #   data.each_pair.to_a  # => [[:country, "Australia"], [:population, 20000000]]
  #
  def each_pair
    return to_enum __method__ unless block_given?
    @table.each_pair{|p| yield p}
  end

#
  # Provides marshalling support for use by the Marshal library.
  #
  def marshal_dump
    @table
  end

#
  # Provides marshalling support for use by the Marshal library.
  #
  def marshal_load(x)
    @table = x
    @table.each_key{|key| new_ostruct_member(key)}
  end

#
  # Used internally to check if the OpenStruct is able to be
  # modified before granting access to the internal Hash table to be modified.
  #
  def modifiable
    begin
      @modifiable = true
    rescue
      raise TypeError, "can't modify frozen #{self.class}", caller(3)
    end
    @table
  end
  protected :modifiable

#
  # Used internally to defined properties on the
  # OpenStruct. It does this by using the metaprogramming function
  # define_singleton_method for both the getter method and the setter method.
  #
  def new_ostruct_member(name)
    name = name.to_sym
    unless respond_to?(name)
      define_singleton_method(name) { @table[name] }
      define_singleton_method("#{name}=") { |x| modifiable[name] = x }
    end
    name
  end
  protected :new_ostruct_member

def method_missing(mid, *args) # :nodoc:
    mname = mid.id2name
    len = args.length
    if mname.chomp!('=')
      if len != 1
        raise ArgumentError, "wrong number of arguments (#{len} for 1)", caller(1)
      end
      modifiable[new_ostruct_member(mname)] = args[0]
    elsif len == 0
      @table[mid]
    else
      raise NoMethodError, "undefined method `#{mid}' for #{self}", caller(1)
    end
  end

# Returns the value of a member.
  #
  #   person = OpenStruct.new('name' => 'John Smith', 'age' => 70)
  #   person[:age] # => 70, same as ostruct.age
  #
  def [](name)
    @table[name.to_sym]
  end

#
  # Sets the value of a member.
  #
  #   person = OpenStruct.new('name' => 'John Smith', 'age' => 70)
  #   person[:age] = 42 # => equivalent to ostruct.age = 42
  #   person.age # => 42
  #
  def []=(name, value)
    modifiable[new_ostruct_member(name)] = value
  end

#
  # Remove the named field from the object. Returns the value that the field
  # contained if it was defined.
  #
  #   require 'ostruct'
  #
  #   person = OpenStruct.new('name' => 'John Smith', 'age' => 70)
  #
  #   person.delete_field('name')  # => 'John Smith'
  #
  def delete_field(name)
    sym = name.to_sym
    singleton_class.__send__(:remove_method, sym, "#{name}=")
    @table.delete sym
  end

InspectKey = :__inspect_key__ # :nodoc:

#
  # Returns a string containing a detailed summary of the keys and values.
  #
  def inspect
    str = "#<#{self.class}"

ids = (Thread.current[InspectKey] ||= [])
    if ids.include?(object_id)
      return str << ' ...>'
    end

ids << object_id
    begin
      first = true
      for k,v in @table
        str << "," unless first
        first = false
        str << " #{k}=#{v.inspect}"
      end
      return str << '>'
    ensure
      ids.pop
    end
  end
  alias :to_s :inspect

attr_reader :table # :nodoc:
  protected :table

#
  # Compares this object and +other+ for equality.  An OpenStruct is equal to
  # +other+ when +other+ is an OpenStruct and the two objects' Hash tables are
  # equal.
  #
  def ==(other)
    return false unless other.kind_of?(OpenStruct)
    @table == other.table
  end

#
  # Compares this object and +other+ for equality.  An OpenStruct is eql? to
  # +other+ when +other+ is an OpenStruct and the two objects' Hash tables are
  # eql?.
  #
  def eql?(other)
    return false unless other.kind_of?(OpenStruct)
    @table.eql?(other.table)
  end

# Compute a hash-code for this OpenStruct.
  # Two hashes with the same content will have the same hash code
  # (and will be eql?).
  def hash
    @table.hash
  end
end

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